ams Announces Optical Sensor with Goal of Bringing Medical-Grade Monitoring to Mobile Devices

The AS7026 from ams brings medical-grade cardiovascular monitoring to mobile devices

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The End of the Crystal? TI Introduces Two New Products Using Breakthrough BAW Resonator Technology

TI is introducing the industry's first wireless, crystal-less MCU as well as a BAW-based network synchronizer capable of 400-Gbps.

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Thin-Film Deposition Controller Using Microcontroller

This project is used to control the movement of the spray head and nozzle in a thin metal or insulation film deposition system. Here, AT89C51 or P89V51RD2 microcontroller (MCU) is used to control the spray head and nozzle in x and y directions. It is an inexpensive, simple and efficient solution for a flat surface. […]

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A New 30-Channel RGB LED Controller from Texas Instruments

The LP5030 is intended to improve and simplify LED-based user interfaces in routers, handheld devices, and many other consumer-electronics applications.

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How to Write Assembly Instructions for Programming a 32-bit ARM Core with a Raspberry Pi

This article explores the basic instructions needed to program a 32-bit ARM core, while building a foundational understanding of the micro-architecture.

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embedded world 2019 Begins in Nuremberg, Focuses on “Embedded Intelligence” for AI

The Embedded World Conference 2019 Begins this week, highlighting the rapid advances made in this dynamic technology.

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A New 11-Channel Optical and Infrared Sensor from ams

The AS7341 can be used for optical-spectrum analysis and color matching in mobile phones and various other electronic devices.

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E-Ration Card Management System with RFID

Download Project Document/Synopsis The Indian ration card provides food for the poor people which is distributed by the government along with the fuel. It provides a distinct identity of person which is useful to update with the government record. The basic food items provided by government are rice, sugar, wheat. Ration Card is one of […]

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GUI Based Stock Management & Control System Project

Download Project Document/Synopsis Stock management is the practice of ordering, storing, tracking, and controlling inventory. Inventory control process is also important for maintaining the right balance of goods in your warehouses and the number of goods sold. You don’t want to lose a sale because you didn’t have enough inventory to fill an order. It […]

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Data Deduplication using File Checksum with Python

Download Project Document/Synopsis While managing and performing file operations on computer or on other storage devices, many duplicate files with a considerable size will be gathered on the computer. Accumulation of these digital junk levels can be a primary cause for shortage of storage space and decrease in computer performance. Therefore, there is a need […]

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Efficient Courier Tracking System Project

Download Project Document/Synopsis Courier service providers usually have a very large network across countries. A courier goes through several places including distribution center and delivered using transportation services like, aero plane, ship, road transport etc. All customers would like to track their consignment through online or via email or SMS, whatever options that might be […]

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Automatic Fan Controller For An Active Heatsink

This circuit is based on a thermistor and an operational amplifier (op-amp) that drives a MOSFET to switch a cooling fan on and off in an active heatsink system. The design also includes an overload protection mechanism. An active heatsink is normally included in electronic products such as power supplies and power amplifiers. It has […]

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arm Releases New Infrastructure and Security Certifications for IoT Devices

arm's new security certifications and IoT infrastructure platforms plan for one trillion connected devices.

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Mobile World Congress Kicks Off in Barcelona with 5G at the Forefront

Mobile World Congress 2019 begins today in Barcelona with "Intelligent Connectivity" as its central theme.

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Blockchain Technology to Revolutionise the Gaming Industry

Techies in the gaming industry have always been the guinea pigs of the technology world, and right now they are teeming with the buzz around blockchain technology. It is now believed to be the world’s leading software solution for digital assets. After finding its successful application in almost every field—including finance, agriculture and geospatial areas—blockchain, […]

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Build Your Own Voice-Activated Home Automation System with the Gentleman Maker’s Posh Butler

Learn how to use a Raspberry Pi to make your own posh home automation system!

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STMicroelectronics Releases New Series of Microprocessors for IoT and Industry Applications

STMicro has a new series of MPUs for IoT and IIoT (industrial IoT) applications.

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A New STMicroelectronics Current-Mode Controller for High-Power-Factor LED Drive

STMicroelectronics claims this new power controller improves efficiency and performance in LED applications.

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How Does An Optical Fiber Cable Works?

In this video, the presenter is going to show you the working principle of an Optical Fiber cable along with its construction and working. He will also compare Optical Fiber Cable with a traditional Copper cable along with its application. Courtesy: Learn Engineering

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Make Your Own Joystick for Robot

  Here is a simple joystick to control a robot to move in forward, backward, right, left, clockwise (CW) and counter-clockwise (CCW) directions using six buttons. It is cheaper than most other joysticks available in the market. The author’s prototype is shown in Fig. 1. Circuit and working Circuit diagram of the joystick for the […]

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News Brief: Tektronix Announces New AWG70000B Series Arbitrary Waveform Generator

With robust memory and new features, the AWG70000B Series by Tektronix brings dynamic real-world signal simulation to test and measurement.

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Diodes Incorporated Releases New Series of Hall-Effect Switches for Automotive Applications

Diodes Incorporated announces the AH356xQ series of AEC-Q100 Grade 0 qualified omnipolar Hall-effect switches.

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ON Semiconductor Releases RSL10 IoT Sensor Development Kit with Ultra Low-Power Bluetooth Radio

Last week, ON Semiconductor released the new RSL10 Sensor Development Kit, which combines its ultra-low-power Bluetooth Radio with an array of low-power sensors from Bosh Sensortec.

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A Look at CUI’s New Compact AC-to-DC Power Supplies for Industrial and Consumer Applications

CUI has added 3 W and 5 W modules to an existing family of user-friendly AC/DC converters.

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Raspberry Pi vs Pine A64

Introduction

Single Board Computers or SBCs have grown from making programming interesting, easy and inexpensive to young minds to being used in complex robotics, network and server projects. When speaking of single board computers, the first thing that pops in our minds (or most of us) is Raspberry Pi.

It became so popular that an estimated 20 million units have been sold until now. The success of Raspberry Pi has influenced several other creators and developers to make similar cheap yet powerful Single Board Computers.

One such family of single board computers is Pine64, a product developed to compete with Raspberry Pi, both in terms of price and performance.

The following is a small comparison between Raspberry Pi and Pine A64 single board computers.

Raspberry Pi vs Pine A64

The Raspberry Pi has been something of a minor cultural marvel in recent years, at least in the niche world of (very) portable computing. A computer the size of a small credit card that has as much computing power as the desktop machines we grew top with, these pocket-sized microcomputers have been used as everything from retro gaming rigs to full-blown desktop replacements.

They can even be manipulated to run affordable security camera setups, wireless printer servers, robot controllers and so much more.

The only barrier to entry for many might be the cost. Whilst you can pick up a Raspberry Pi 3B (the most recent model) for a pittance, for such a niche, hobbyist device, even the paltry £30/$35 price point might seem steep.

For those who are intrigued by the concept of the Pi, but are wary of the price, the Pine A64 minicomputer offers a remarkable alternative at more than half the price!

A microcomputer that is (on paper) just as powerful as its competitor, the Pine A64 single-board device boasts similar specs to the Pi and can more than keep up with it when it comes to most applications. But which comes out on top when the two are matched against each other in a good old-fashioned hardware face-off? Let’s examine the major benefits of each.

Raspberry Pi

• The most popular single board computer on the planet with a major following, which means there are countless guides available online. For beginners, there really is no alternative.
• The Pi’s default OS (“Raspbian”) was written with easy coding in mind and is a perfect learning tool for those looking to get into coding for the first time. Also, the Pi is so ubiquitous that a number of Linux style operating systems already work perfectly with it.
• The setup is self-explanatory and even if you’re having trouble, there are many guides available.
• The flexibility of the Pi is unprecedented in the market. A fully featured media center, replacement desktop rig, network server or retro arcade – the choices are almost endless.
• Excellent wireless and wired connectivity with 4 USB ports, HDMI, Ethernet and more, as well as Bluetooth connectivity and the option to upgrade storage with a micro SD card.
• The “Pi Store” allows access to hundreds of apps engineered to work specifically with the Pi.

 

Pine A64

• For just $15 (base model) the Pine is an absolute steal with up to 2GB of RAM (compared to the Pi’s maximum of 1GB) and a CPU that matches the Pi’s 1.2 GHz quad-core processor.
• The A64 has a built-in HDMI port capable of streaming 4K video.
• A more powerful GPU than the Pi, meaning better graphics for gamers.
• Can run Android OS, which will be instantly familiar to anyone who has ever used a smartphone.
• Three models to choose from offering various levels of power and usability.

Conclusion

Generally speaking – if you’re a beginner we’d recommend the Pi for its ease of use and large, vibrant community. But, if you’re willing to dig a little deeper, the Pine A64 will certainly give you more bang for your buck.

Whichever you opt for, however, make sure you supplement your purchase with a few accessories from RS Components to get the most out of your new device.

 

Image credits:

• Raspberry Pi – https://ift.tt/2U4tOwt
• Pine A64 – https://ift.tt/2BHV2lm

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AC Switch Control with Opto-Triac

AC switches are silicon devices that control AC loads directly connected to the AC mains. This means that the driving reference terminal of the AC switch can be connected to the Line potential. This circuit explains the need for an insulation layer for the control unit and the way to implement it for an AC […]

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PLC based Automatic Dam Shutter Control System

Download Project Document/Synopsis Dam is a barrier that stops or restricts the flow of water or underground streams. Dam is also used to collect water or for storage of water which can be evenly distributed among different locations. The farmers are dependent on seasonal rain and after that bore-well water for their crops. The dams […]

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PLC Based Smart Elevator Control System Project

Download Project Document/Synopsis The main requirement of all multi storage buildings are elevators. Elevators ease the work humans and keep him/her in the comfortable zone. Elevators are used in almost all the multi storage buildings in metropolitan cities. Elevators are nothing but the vertical transportation device which is used to transfer goods and passengers. Elevators […]

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PLC Based Intelligent Traffic Control System using Sensors

Download Project Document/Synopsis Due to increasing population, the utilization of vehicles is increasing in large numbers. There are numerous vehicles that keeps running on the streets in the same time, as a result of this the traffic issues are being confronted. Traffic signals are the most convenient way of controlling traffic in a busy junction. […]

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Antenna Design Considerations For RF Applications

Since there is no unique solution for a particular RF application, some guidelines are needed. This article looks at some such guidelines. An antenna transmits and receives electromagnetic (EM) radiation in free space. The wireless range of an antenna depends greatly on its design, enclosure and a good PCB layout. This article covers some of […]

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PLC Based Automatic Drainage Water Monitoring & Control System

Download Project Document/Synopsis Drainage pipes are used for the disposal and unfortunately sometimes there may be loss of human life while cleaning the blockages in the drainage pipes. To overcome this problem and to save human life we implement this automatic industrial drainage system. This proposed concept is to replace the manual work done in […]

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3D Holographic Visuals Can Convert Passive Audiences Into Real Buyers

Successful branding and audience engagement depend on innovative and eye-catching marketing strategies. 3D holographic visuals have become a globally popular technology to generate audience interest. Kiryl Chykeyuk, co-founder and Managing Partner of UK-based HYPERVSN, talks to Paromik Chakraborty of EFY Group about the various design elements of their hologram system and how such technologies are […]

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PLC based Multi-channel Fire Detection & Alarm System Project

Download Project Document/Synopsis A fire alarm system is used to detect and warn the people through visual and audio appliances when smoke, fire, carbon monoxide or other fire producing chemicals are present. Fire accidents are the accidents which occur most frequently, which takes major lives. Flammable liquids and gases can cause an explosion if they […]

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OTP Based Smart Wireless Locking System.

In this project, we are going to make a smart OTP-based locking system as you can see in (Fig. 1). This smart lock can generate a new password every time you unlock it, which further enhances your security level. This new device is much safer than the traditional key-based system and electronic wireless lock system. […]

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Smart Road Safety and Vehicle Accident Prevention System for Mountain roads

Download Project Document/Synopsis Growth in population has led to growth in technology. People use car on large number and number of accidents taking place, is increasing day-by-day. Road accidents are undoubtedly the most frequent happening cases and overall, the cause of the most damage. There are many dangerous roads in the world like mountain roads, […]

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IOT based Smart Agriculture Monitoring System Project

Download Project Document/Synopsis Agriculture is done in every country from ages. Agriculture is the science and art of cultivating plants. Agriculture was the key development in the rise of sedentary human civilization. Agriculture is done manually from ages. As the world is trending into new technologies and implementations it is a necessary goal to trend […]

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IOT Based Automatic Vehicle Accident Detection and Rescue System

Download Project Document/Synopsis The rapid rise of technology and infrastructure has made our lives easier. The high demand of automobiles has also increased the traffic hazards and road accidents. Life of the people is under high risk. The delay in reaching of the ambulance to the accident location and the traffic congestion in between accident […]

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Secure File Storage on Cloud Using Hybrid Cryptography in Python

Download Project Document/Synopsis The information over internet is becoming a critical issue due to security problems. We have proposed a system for securing the important data from a file. Cryptography algorithms provides an effective way for protecting sensitive information. It is a method for storing and transmitting data in a form that is only readable […]

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Wish list Products Price Comparison Website Project

Download Project Document/Synopsis Price comparison websites are becoming more popular since Ecommerce revolution. The data and values provide by the price comparison sites helps consumers to save money while shopping online. The ability to check the price of products brings convenience and saves a lot of time. Price comparison is done when the price of […]

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Introduction to CAN (Controller Area Network)

This article introduces the Controller Area Network (CAN) serial communication bus, detailing message frames, bus arbitration, and signaling.

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Trinamic Releases New Range of “Smart” Brushless DC Motors

TRINAMIC has announced their first range of brushless smart motors. Capable of precise movement, these BLDCs also integrate closed-loop feedback for quality control across a range of applications.

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Home Automation Using Arduino Through Android Device

This project is based on Android app and Arduino Uno using Bluetooth as the wireless communication medium. It is a simple and flexible home automation system with only a few electronic components, without complex soldering. This project is designed to control three appliances, but it can be extended to six or more. Circuit and working […]

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Characteristics of Current-Feedback Op-Amps: Benefits of CFA Design vs. VFAs

In this article, we’ll take a more detailed look at the functionality and characteristics of current-feedback amplifiers.

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Smart Homes to Smart Cities: Building Automation Roundup

While IoT devices find more ways into our homes, building designers are largely taking a wait-and-see attitude towards automation. Have a look at some trends and cutting-edge innovations in building automation.

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The Best Open Source Platforms for Developing Blockchain Applications

This article introduces some popular open source platforms that help in quick and easy development of blockchain-based applications. Blockchain technology is termed as the fifth evolution of computing. Blockchain is regarded as a novel approach towards distributed databases. It is a disseminated database of open records that documents all transactions or advanced events that have […]

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A New Low-Power RF Transmitter for Automation, Wireless Sensors, and IoT Devices

Maxim has released the MAX41461, a highly integrated ASK transmitter that works in the sub-GHz ISM frequency bands and is intended for a variety of low-cost wireless applications.

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Automatic Water Level Control System Using PLC Project

Download Project Document/Synopsis Here we have proposed the concept of “Water Level Control System Using PLC”. Most Industries are facing water level controlling problem, the major problem encountered is to monitor the over flowing of water. Sometimes water flows over the tank level. This water tank level controller system helps to prevent the overflowing of […]

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SENSORS: Sensors for Security Applications

Electronic sensor systems extend their application to fields such as national defence, home, personal safety, office and industry. Are you familiar with the phrase “Big brother is watching you” from the novel Big Brother-1984 by George Orwell? In the context of modern technology, the concept of watching could be compared to a CCTV system or […]

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Understanding ASCII in Embedded Firmware Development

This article, which serves as preparation for a discussion of C-language strings, introduces the concept of ASCII characters and explains two benefits of ASCII-based coding techniques.

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A New Line of Low-Profile, Shielded Inductors for DC/DC Converters

TT Electronics has released the HA74 series of surface-mount inductors, which can help improve efficiency in space- and weight-constrained switching regulators.

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The New Mobile Communication Standard Needs Reduced Footprint For Related Designs

What are the opportunities and challenges that leading PCB manufacturers should be ready for, with the arrival of 5G? To figure that out, Rahul Chopra of Electronics For You spoke with Erich Schlaffer, project leader – Research and Development, AT&S, Austria. Q. Why is there a need to relook at manufacturing processes and technologies for […]

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arm Cortex-M Processors Get a Boost towards Machine Learning, DSP in the Age of IoT Edge Computing

Can IoT devices handle edge processing for machine learning and DSP? arm's newly-announced Helium vector extension for Cortex-M processors aims to facilitate more complex development on the edge.

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Temperature Monitoring on Cayenne IoT Platform

This temperature monitoring system is based on Cayenne Internet of Things (IoT) platform, NodeMCU microcontroller (MCU) and Message Queuing Telemetry Transport (MQTT) protocol. The authors’ prototype is shown in Fig. 1. Cayenne IoT Platform accelerates the development of IoT-based solutions, including quick design, prototyping and other commercialised projects. It is a drag-and-drop IoT project builder […]

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Current-Feedback Amplifiers vs. Voltage-Feedback Amplifiers: Similarities and Differences

This article discusses the differences between voltage-feedback amplifiers and current-feedback amplifiers.

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Never Run Out of Tea Again! How to Build the Gentleman Maker’s Intelli-T Raspberry Pi Sensor Alarm

Never run out of tea again! The Intelli-T uses a weight sensor and a Raspberry Pi to alert you when your tea supply is running low.

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STMicroelectronics Releases New Accelerometer and Gyroscope SiP IC with Built-In Machine Learning

ST has just released their latest sensor IC, the LSM6DSOX, which provides sensor data on acceleration and orientation. In addition, it can also process this data via machine learning without any external microcontroller input.

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What is an MCB?

A miniature circuit breaker (MCB) automatically switches off electrical circuit during an abnormal condition of the network means in overload condition as well as faulty condition. Nowadays we use an MCB in low voltage electrical network instead of a fuse. The fuse may not sense it but the miniature circuit breaker does it in a more reliable […]

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DC Panel Meter using Arduino

Panel meters in regulated power supplies are used to display electrical parameters like voltage and current. Presented here is a DC Panel Meter circuit to display DC voltage and current of power supplies, including DIY-type ones. Circuit and working Circuit diagram of the DC panel meter using Arduino is shown in Fig. 1. The circuit […]

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Never Run Out of Tea Again! How to Build the Gentleman Maker’s Intelli-T Raspberry Pi Sensor Alarm

Never run out of tea again! The Intelli-T uses a weight sensor and a Raspberry Pi to alert you when your tea supply is running low.

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A New Wideband Upconverter for High-Frequency Radar and Communication Systems

Analog Devices has recently released an SPI-programmable RF upconverter that can translate baseband or IF signals to extremely high transmission frequencies.

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Online Inventory Management System Project in Python

Download Project Document/Synopsis The inventory management ensures that the company always has the required materials and products in hand while keeping the cost as low as possible. Inventory Management refers to the process of supervising and controlling the stock items of a company. Typically, Inventory Management Systems are used by firms that either sell a […]

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Online Healthcare Information Management System Project

Download Project Document/Synopsis Health improvement can be done by preventing, proper diagnosis and treatment of diseases, illness, injury and other physical and mental impairments in human beings. Health care is taken by health professionals in associated health fields. Healthcare system delivers health care services to meet the health of target populations. There is a rise […]

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Web Based Pharmaceutical Store Sales Forecasting System

Download Project Document/Synopsis Many existing systems which is used by the medical store is manual. As all the employees manually work to complete each and every process. This not only makes the task time consuming but also makes the employee slow down to do any productive work. The recording of data in registers and storing […]

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Online Employee Recruitment System Project in Python

Download Project Document/Synopsis We consider a company that we can automate its recruitment process and this company is currently using a manual system to recruit employees; since recruiting employees manually is a time consuming, possibly erroneous in employing incompetent individuals, thus wasting of the company’s money or loosely speaking not a wise strategy in terms […]

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How Helpful Is Blockchain Technology In Cloud Storage?

Blockchain has revolutionised the Internet. This new and ingenious technology allows blocks of data to be distributed across ledgers, without any central administering authority, but with the essential requirement that the data be validated by participants. This makes the data flexible and secure. Blockchain technology can be used to great advantage in cloud storage solutions […]

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Simple Priority Arbiters: Allocating Resources in Embedded Systems with VHDL and Logism

This article looks at the use cases and benefits of the arbiter with an implementation of a simple priority arbiter in VHDL.

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A New DC/DC Converter for Wearables, Sensors, and Low-Power Wireless Devices

STMicroelectronics has announced a new power-management IC that provides high efficiency, low quiescent current, and variable output voltage in a (very) small package.

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Working Of A Transformer

This video gives a detailed animated illustration on the working of electrical Transformers. It explains the basic working principle and construction of transformer, step-up transformer, step-down transformer, transformer winding and core construction. Here is the transcription of the above video: Transformers are capable of receiving AC power at one voltage and delivering at another voltage. […]

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Electronics Building and Miscellaneous Apps

Scan the QR codes to download the apps based on the operating system of your device. ElectroDroid Pro Updated: June 2018 OS: Android and iOS Download: Full version (paid; free trial version available for Android) ElectroDroid makes circuit building easy. It features calculators, pin-outs and resources to provide quick reference for circuit builders and learners. […]

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Chip and PCB Design Tools For Engineers

In this article, we would be short reviewing various Chip and PCB Design Tools such as Allegro PCB Designer, KTechLab, Altium Designer, Oregano and Scilab. Allegro PCB Designer Visit: website Full version: Paid Allegro PCB Designer, made by Cadence, is an interesting design tool for any scale, from concept to production in a constraint-driven design […]

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Two-Channel Wireless Audio Amplifier Using Bluetooth and TA8210AH

Use of audio amplifiers is increasing day by day. This project deals with the transmission of the audio signal wirelessly and amplification of the received signal using VTF-108 Bluetooth module and audio amplifier IC TA8210AH. Bluetooth module can connect to devices such as Hi-Fi equipment, mobile phones and MP3 players. Audio sources such as mobilephones […]

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u-blox Adds Devices with Internal Antennas to Series of Bluetooth 5 Communications Modules

Summary

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What’s Inside a PCB Manufacturing Facility? A Tour of Royal Flex Circuits

Take a look inside a PCB manufacturing facility.

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Quantum Dots: An Emerging Field Of Technology

A central theme in nanotechnology, quantum dots can tune their band gap, which enables these to control the frequency of light emission and absorbance. Quantum dots (QDs) are semiconducting particles that are a few nanometres in size. Due to their small size, these can confine electrons’ motions. These have the ability to tune their band […]

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Engineer Spotlight: Open Source Signal Integrity Engineering with Davi Correia and David Banas

The future of electrical engineering, the freedom of giving code away for free, and the importance of professional curiosity: an interview with Signal Integrity Engineers David Banas and Davi Correia.

from All About Circuits Technical Articles http://bit.ly/2E03HB4

How to Write Assembly Language: Basic Assembly Instructions in the ARM Instruction Set

Learn some basic instructions used in the ARM instruction set used for programming ARM cores.

from All About Circuits Technical Articles http://bit.ly/2BtpUWC

How to Write Assembly Language: Basic Assembly Instructions in the ARM Instruction Set

Learn some basic instructions used in the ARM instruction set used for programming ARM cores.

from All About Circuits Technical Articles http://bit.ly/2BtpUWC

Image Steganography Project using Python

Download Project Document/Synopsis Steganography is the process of hiding a secret audio/video/text within a larger one in such a way that someone cannot know the presence or contents of the hidden audio/video/text. Steganography is, many times, confused with cryptography as both the techniques are used to secure information. The difference lies in the fact that […]

The post Image Steganography Project using Python appeared first on NevonProjects.

from NevonProjects http://bit.ly/2I0DUgc

Online Crime Reporting System in Python Project

Download Project Document/Synopsis Crime is a part of illegal activities in human life. It is quite obvious that the rate of crimes is increasing day by day in all societies across the world, but we do believe that there is a lot which can be done by both the governments and the individuals to reduce […]

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from NevonProjects http://bit.ly/2DhCvfw

Efficient Courier Tracking System Project

Download Project Document/Synopsis Courier service providers usually have a very large network across countries. A courier goes through several places including distribution center and delivered using transportation services like, aero plane, ship, road transport etc. All customers would like to track their consignment through online or via email or SMS, whatever options that might be […]

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from NevonProjects http://bit.ly/2E1xnxP

Ecommerce Website Live Visitor Tracking System Project

Download Project Document/Synopsis Ecommerce is known as electronic commerce, which refers to buying and selling goods through internet. Ecommerce is often used to sell or buy physical products online. You can buy almost anything you could imagine without leaving your house. Online stores are open 24 hours a day and are accessible from any location […]

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Designing FM Receiver Using GNU Radio And RTL-SDR Dongle

This article covers the designing of an FM receiver using GNU Radio software and RTL-SDR hardware on Ubuntu operating system (OS). With advancements in software-defined radio (SDR), more supports are available for SDR hardware to be used with computers. GNU Radio is a free software and provides signal processing capabilities. You can design the FM […]

The post Designing FM Receiver Using GNU Radio And RTL-SDR Dongle appeared first on Electronics For You.

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What Is a Microarchitecture? Understanding Processors and Register Files in an ARM Core

Learn about the microarchitecture of an ARM processor, including an explanation of the register file and how it functions within a processor.

from All About Circuits Technical Articles http://bit.ly/2Dm70Rt

ROHM, Omron, Maxim: A Look at the Biometric-Monitoring Wearables Made by Component Manufacturers

The wearables market is by many measures still in its infancy, but many manufacturers continue to push wearable products into the market. How are component manufacturers involved in the wearable market and what are they currently producing?

from All About Circuits News http://bit.ly/2WNXTlC

Greater Functionality Demands Higher Levels Of Technology

Companies are trying to maintain their competitive edge by adding more functionality to their products. This is making systems that were previously relatively simple more complex and difficult to design. Designers are being challenged to deliver greater functionality in the same space or, often, in a smaller space. This raises the stakes when designers are […]

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from Electronics For You http://bit.ly/2HZCJxr

New C&K Switches Address Subtleties in Game Controller Design

Here's a look at what makes for good gaming hardware, and a profile of C&K's latest tactile switches for gaming environments.

from All About Circuits News http://bit.ly/2DWM319

A New High-Precision Low-Power Voltage Reference from TI, the REF3425-EP

This article looks at the REF34xx-EP which is a low-drift, small-size, low-power voltage reference.

from All About Circuits News http://bit.ly/2WNWtHB

How to update videocon d2h software

In case of videocon d2h box hanging
progress bar not going to 100%
only videocon logo
or any other problem u think it may be software related
then switch off your videocon d2h stb
power on
when show videocon logo
press from videocon d2h remote
1. - Green
2.- 0
3.- 5
4.- Mute
then wait it process and restart
Now your set top box is ok...

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Wireless Control of Robotic Car Through MATLAB GUI

This project presents the implementation of a MATLAB graphical user interface (GUI)-based approach to wirelessly control the movement of a robotic car. Commands to move the car in forward, reverse, right and left directions are sent from the GUI, and processed by Arduino present on transmitter side. After processing the command(s), a code is sent […]

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from Electronics For You http://bit.ly/2GtGbxV

Webinar On µModule Power Management Solutions

February 6, 2019 – Mouser Electronics, Inc., is teaming up with Analog Devices, invites to join a technical webinar titled “Simplify Power Design with Micromodule Products.” Occurring at 15:30 (Indian Standard Time) on February 6, 2019, the technical webinar focuses on Power by Linear™ µModule (Micromodule) DC/DC power products from Analog Devices. The µModule system-in-package (SiP) power […]

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from Electronics For You http://bit.ly/2SeOMf6

How to Drive Large Capacitive Loads with an Op-Amp Circuit

Learn more about capacitive load compensation.

from All About Circuits Technical Articles http://bit.ly/2WMdXEf

Resources for Prototyping: The Basics of New Languages for Programming Microcontrollers

Microcontroller specifications have changed little over the last few decades, but the expansion of languages and supporting software has opened up many choices. Learn about several new languages available for microcontrollers in this guide.

from All About Circuits News http://bit.ly/2I1Nu2u

Understanding 5G Coexistence Testing Fundamentals

Adding 5G to an already crowded and congested spectrum increases the potential for interference. 5G New Radio (NR) release 15, introduced in December 2017, lays the foundation for ultra-fast download speeds, reliable low latency connections, and connectivity to billions of new IoT devices coming online in the next few years. With scalable numerology, flexible waveforms, […]

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Is Arduino killing Embedded Software Skill?

I have been looking for fresh engineers and also wannabe IoT Entrepreneurs to help them bringing out their ideas as products. One thing that struck me was their lack C and Assembly programming skills. They are good to show you a prototype made out of Arduino and they claim their product is complete. What surprises […]

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from Electronics For You http://bit.ly/2WQHjl8

Decision Tree Based Tourism Recommendation System

Download Project Document/Synopsis Tourism and taking breaks from work reduces the stress felt by workers. Stress impacts focus, so stress-relieving vacations can help return focus through a reduction in stress. People have different destination options for the holidays but sometimes our options for vacations are not good all the time to visit every place, because […]

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from NevonProjects http://bit.ly/2HSA48Q

Artificial Intelligence Grew Faster, Better, and More Controversial in 2018. What’s Ahead in 2019?

Let's look back at the last year in AI and forward to what may be in store for 2019.

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How Brushless Motor and ESC Work

In this tutorial we will learn how brushless motor and ESC work. This article is the first part of the following video, where we will learn the working principle of a brushless DC motor and ESC (Electronic Speed Controller), and in the second part we will learn how to control BLDC motor using Arduino.

How It Works

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A BLDC motor consist of two main parts, a stator and a rotor.  For this illustration the rotor is a permanent magnet with two poles, while the stator consists of coils arranged as shown in the picture below.

We all know that if we apply current through a coil it will generate a magnetic field and the magnetic field lines or the poles depends on the current direction.

So if we apply the appropriate current, the coil will generate a magnetic field that will attract the rotors permanent magnet. Now if we activate each coil one after another the rotor will keep rotating because of the force interaction between permanent and the electromagnet.

In order to increase the efficiency of the motor we can wind two opposite coils as a single coil in way that will generate opposite poles to the rotors poles, thus we will get double attraction force.

With this configuration we can generate the six poles on the stator with just three coils or phase. We can further increase the efficiency by energizing two coils at the same time. In that way one coil will attract and the other coil will repel the rotor.

In order the rotor to make a full 360 degrees cycle, it need six steps or intervals.

If we take a look at the current waveform we can notice that in each interval there is one phase with positive current, one phase with negative current and the third phase is turned off. This gives the idea that we can connect the free end points of each of the three phases together and so we can share the current between them or use a single current to energize the two phases at the same time.

Here’s an example. If we pull up phase A High, or connect it to the positive DC voltage, with some kind of switch, for example a MOSFET, and on the other side, connect the phase B to ground, then the current will flow from VCC, through phase A, the neutral point and phase B, to ground. So, with just a single current flow we generated the four different poles which cause the rotor to move.

With this configuration we actually have a star connection of the motor phases, where the neutral point is internally connected and the other three ends of the phases come out of the motor and that’s why brushless motor have three wires coming out of it.

So, in order the rotor to make full cycle we just need to activate the correct two MOSFETS in each of the 6 interval and that’s what ESCs are actually all about.

How does an ESC Work (Electronic Speed Controller)

An ESC or an Electronic Speed Controller controls the brushless motor movement or speed by activating the appropriate MOSFETs to create the rotating magnetic field so that the motor rotates. The higher the frequency or the quicker the ESC goes through the 6 intervals, the higher the speed of the motor will be.

However, here comes an important question, and that’s how do we know when to activate which phase. The answer is that we need to know the position of the rotor and there are two common methods used for determining the rotor position.

The first common method is by using Hall-effect sensors embedded in the stator, arranged equally 120 or 60 degrees from each other.

As the rotors permanent magnets rotate the Hall-effect sensors sense the magnetic field and generate a logic “high” for one magnetic pole or logic “low” for the opposite pole. According to this information the ESC knows when to activate the next commutation sequence or interval.

The second common method used for determining the rotor position is through sensing the back electromotive force or back EMF. The back EMF occurs as a result of the exact opposite process of generating a magnetic field or when a moving or changing magnetic field pass through a coil it induces a current in the coil.

So, when the moving magnetic field of the rotor pass through the free coil, or the one that’s not active, it will induce a current flow in coil and as result a voltage drop will occur in that coil. The ESC captures these voltage drops as they occur and based on them it predicts or calculates when the next interval should take place.

So that’s the basic working principle of brushless DC motors and ESCs and it’s the same even if we increase the number of poles of the both the rotor and the stator. We will still have a three-phase motor, only the number of intervals will increase in order to complete a full cycle.

Here we can also mention that BLDC motors can be inrunners or outrunners. An inrunner brushless motor has the permanent magnets inside the electromagnets, and vice versa, an outrunner motor has the permanent magnets outside the electromagnets. Again, they use the same working principle and each of them has its own strengths or weaknesses.

Ok, that’s enough theory so now let’s demonstrate and see in real life what we explained above. For that purpose we will we connect the three phases of a brushless motor to an oscilloscope. I connected 3 resistors in a single point to make a virtual neutral point and on the other side I connected them to the three phases of the BLDC motor.

The first thing that we can notice here are the three sine waves. These sine waves are actually the back EFM generated in the phases when they are not active.

We can see that as we change the RPM of the motor, the frequency of the sine waves changes and as well as their amplitude. The higher the RPM, the higher are the frequency and the amplitude of the back EMF sine waves. However, what drives the motor are actually these peaks, which are the active phases that generate the changing magnetic field.

We can notice that at each interval, there are two active and one inactive phase. For example, here we have phase A and B active, while phase C is inactive. Then we have phase A and C active, while phase B is inactive, and so on.

Here I would like to give shout-out to Banggood.com for providing me this oscilloscope. It’s the Rigol DS1054Z and it’s one of the best entry-level oscilloscopes for its price point. It has four input channels, 50MHz bandwidth, which is hackable to 100MHz, it has a sampling rate of 1GSa/s and relatively large memory depth of 24Mpts.

The display is 7 inches and it’s really nice and bright. It features various math functions, low pass and high pass filters, SPI and I2C decoding and much more. So again, big thanks to Banggood.com and make sure you check out this oscilloscope in their store.

Nevertheless, that’s the basic working principle of brushless motor. In case you want some more real live examples and learn how to control brusheless motors using Arduino you should check the part two of this tutorial.

I hope you enjoyed this tutorial and learned something new . Feel free to ask any question in the comments section below and don’t forget to check my collection of Arduino Projects.

The post How Brushless Motor and ESC Work appeared first on HowToMechatronics.

from HowToMechatronics http://bit.ly/2GbdBBY

A New 45V Zero-Drift Op-Amp from Microchip, the MCP6V51

This article looks at Microchip’s MCP6V51, which is a zero-drift op-amp with a wide supply range and enhanced EMI rejection.

from All About Circuits News http://bit.ly/2DaSDPZ

RFID Based Petrol Pump Automation System

Download Project Document/Synopsis Everything has been digitized. In many existing systems, almost all petrol pumps have a controlling unit to perform the tasks like managing the electrical pump, drive the display, measure the flow & accordingly turn OFF the electrical pump. But still a person is required to collect the money and there is a […]

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from NevonProjects http://bit.ly/2G7o3dX

Plus-minus 5V Supply From 9V Battery

Op-amps require dual-polarity supply for proper operation. When working with battery supply, it becomes difficult to get dual power supply for the op-amps. Presented here is a simple circuit that provides ±5V from a 9V battery. Circuit and working The circuit diagram for the ±5V supply from a 9V battery is shown in Fig. 1. […]

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from Electronics For You http://bit.ly/2TqoD9A

Non-Reciprocity In Ferrite-Less Devices: A Way To Full Duplex Mobile Communication

With full duplex realisation, a single antenna could be shared between the transmitter and the receiver. 5G standards are currently being laid out. It is estimated that 5G paradigm will be realised in 2020 with fully-set standards and entry of new devices in the market based on those standards. One such prospect is full duplex […]

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The Semiconductor of Automotive Power Design: Who’s Offering SiC Components in 2019?

A brief overview of silicon carbide AKA SiC, which may replace silicon in power electronics altogether.

from All About Circuits News http://bit.ly/2Bj9Rul

Diodes Incorporated Releases New DC-DC Power Converter AP6320x

Diodes Incorporated has just released a new range of DC-DC modules.

from All About Circuits News http://bit.ly/2MOJUqR

Arduino Brushless Motor Control Tutorial | ESC | BLDC

In this tutorial we will learn how to control a brushless motor using Arduino and ESC. In case you want more details how BLDC motors work, you can check the other article or watch the following video which contains explanation of the working principle of a brushless DC motor and how to control one using Arduino and ESC.

Overview

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For this example, I have an outrunner BLDC motor with the following specifications: it has a KV rating of 1000, it can be powered using 2S, 3S or 4S LiPo battery and it requires 30A ESC. The KV rating on a brushless motor defines the RPM of the motor per volt with no load.

 

In this case, the 1000KV means that, for example, if we supply the motor with 2S LiPo battery which has a voltage of 7.4 volts, the motor can achieve maximum RPM of 7.4 times 1000, or that’s 7400 RPM.

Brushless motors are power hungry and the most common method for powering them is using LiPo batteries. The “S” number of a LiPo battery indicates how many cells the battery has, and each cell has a voltage of 3.7V.

For this example, I will use 3S LiPo battery which has 3 cells and that’s 11.1V. So, I can expect my motor to reach maximum RPM of 11100.

Lastly, here’s a 30A ESC that I will use for this example and match with the motor requirements. On one side the ESC has three wires that control the three phases of the motor and on the other side it has two wires, VCC and GND, for powering.

There is also another set of three wires coming out of the ESC and that’s the signal line, +5V and ground. This feature of the ESC is called Battery Eliminator Circuit and as the name suggests it eliminates the need of separate battery for a microcontroller. With this, the ESC provides regulated 5V which can be used to power our Arduino.

We can notice here that this connection is actually the same as the one we see on Servo motors.

So, controlling a brushless motor using ESC and Arduino is as simple as controlling servo using Arduino. ESCs use the same type of control signal as servo and that’s the standard 50Hz PWM signal.

This very convenient, because for example, when building an RC plane, we usually need both servos and brushless motors and, in this way, we can control them easily with the same type of controller.

So, using the Arduino we just have to generate the 50Hz PWM signal and depending on pulses width or the high state duration which should vary from 1 millisecond to 2 milliseconds, the ESC will drive the motor from minimum to maximum RPM.

Arduino Brushless Motor Control – Circuit Diagram

Here’s the circuit diagram for this example. In addition to the ESC we will just use a simple potentiometer for controlling the motor speed.

You can get the components needed for this Arduino Tutorial from the links below:

• Brushless Motor …………………………… Amazon / Banggood
• ESC 30A ……………………………………….. Amazon / Banggood
• Arduino Board …………………………….. Amazon / Banggood
• Potentiometer ……………………………… Amazon / Banggood
• Breadboard and Jump Wires ………… Amazon / Banggood

*Please note: These are affiliate links. I may make a commission if you buy the components through these links. I would appreciate your support in this way!

Arduino Code for BLDC Motor Control

The Arduino code is really simple with just few lines of code.

/*
        Arduino Brushless Motor Control
     by Dejan, https://howtomechatronics.com
*/

#include <Servo.h>

Servo ESC;     // create servo object to control the ESC

int potValue;  // value from the analog pin

void setup() {
  // Attach the ESC on pin 9
  ESC.attach(9,1000,2000); // (pin, min pulse width, max pulse width in milliseconds) 
}

void loop() {
  potValue = analogRead(A0);   // reads the value of the potentiometer (value between 0 and 1023)
  potValue = map(potValue, 0, 1023, 0, 180);   // scale it to use it with the servo library (value between 0 and 180)
  ESC.write(potValue);    // Send the signal to the ESC
}

Description: So, we need to define the Servo library, because with the servo library we can easily generate the 50Hz PWM signal, otherwise the PWM signals that the Arduino generates are at different frequencies. Then we need to create a servo object for the ESC control and define a variable for storing the analog input from the potentiometer. In the setup section, using the attach() function, we define to which Arduino pin is the control signal of the ESC connected and also define the minimum and maximum pulses width of the PWM signal in microseconds.

In the loop section, first we read the potentiometer, map its value from 0 to 1023 into value from 0 to 180. Then using the write() function we send the signal to the ESC, or generate the 50Hz PWM signal. The values from 0 to 180 correspond to the values from 1000 to 2000 microseconds defined in the setup section.

So, if we upload this code to our Arduino, and then power up everything using the battery, then we can control the speed of the brushless motor of zero to maximum using the potentiometer.

However, there are few things that we should note here. When initially powering the motor, the signal value must be the same or lower than the minimum value of 1 millisecond. This is called arming of the ESC, and the motor makes a confirmation beeps so that we know that it’s properly armed. In case we have higher value when powering, which means we have a throttle up, the ESC won’t start the motor until we throttle down to the correct minimum value. This is very convenient in terms of safety, because the motor won’t start in case we have a throttle up when powering.

ESC Calibration

Lastly, let’s explain how ESC calibration works. Every ESC has its own high and low points, and they might slightly vary. For example, the low point might be 1.2 milliseconds and the high point might be 1.9 milliseconds. In such a case, our throttle won’t do anything in the first 20% until it reaches that low point value of 1.2 milliseconds.

To solve this issue, we can calibrate the ESC or set the high and low points as we want. For that purpose, before powering the ESC, first we need to throttle up our potentiometer to maximum or a value at least greater then the current middle point. Then we can power up the ESC, and we will hear few beeps from the motor which actually confirms that we have set the new high point.

Then after 2 seconds, we should move our potentiometer to the position where we what the new low point to be. We will again hear the confirmation beeps and with that we are done with the ESC calibration. Now our throttle will respond right away and we can control the motor within these new two points.

That’s pretty much everything for this tutorial. In case you want to learn how to wirelessly make this Arduino brushless motor control, you can check my previous video where I build and Arduino based RC transmitter and explained how to control BLDC motors using it.

I hope you enjoyed this tutorial and learned something new . Feel free to ask any question in the comments section below and don’t forget to check my collection of Arduino Projects.

The post Arduino Brushless Motor Control Tutorial | ESC | BLDC appeared first on HowToMechatronics.

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