Described here is an electronic system for stopping tank overflow. It is capable of keeping the water-level between any two of the eight predetermined levels, starting from the bottom to the top of the water tank. The technique The system uses a point-level controlling technique. Eight different points are chosen along the tank’s height, from […]
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In this project, an old Bluetooth headset can be used, along with a cellphone to make a robot controller, without a microcontroller (MCU) or any programming. Communication between the robot car and the smartphone is done via Bluetooth. This is an excellent hacking project and is easy to build. Circuit and working The block diagram […]
This article talks about methods to improve EMI and EMC in medical devices. Electromagnetic compatibility (EMC) of a device means that it is compatible with its electromagnetic environment and does not emit electromagnetic waves to a level that causes Electromagnetic Interference (EMI) in other devices. An increase in emission of electromagnetic energy of a device […]
Most commercial torchlights use three AA or AAA cells connected in series, which produces 4.5V to drive white LEDs using a current-limiting resistor. These flashlights do not drive the LEDs efficiently due to lack of a current-control circuit. Presented here is a LED Torchlight circuit that drives high, bright white LEDs from a single dry […]
Stroboscope is a device used to make a cyclically moving object appear slow-moving or stationary. This is realised by illuminating the object intermittently with short pulses of light. Stroboscope is used in the study of insect flight. It can also be used for experiments with simple pendulum, studying details of rapidly moving objects and strobo-animation. […]
In an official document sent out by Ministry of Power on December 14, 2018, the government of India has outlined several key facts, figures and a plan to support the expansion of EVs in the country. Electric vehicles, also called EVs, use one or more electric or traction motors for propulsion. These may be powered […]
In this video, the presenter will show you how to set up your own decent electronics lab, what you need, and how much it’ll cost you. This will also include Electronics test equipment, soldering, surface mount, hand tools, and parts. Courtesy: EEVblog
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 robot […]
World’s smallest computer is here! When IBM announced in March that it had produced the world’s smallest computer, it raised a few eyebrows at University of Michigan, which is home to the previous champion of tiny computing. Now, the team at Michigan University has developed an even smaller device, measuring just 0.3mm to a side—smaller […]
This article describes a method for making a programmer for ESP8266-12 E/F Wi-Fi chip and also discusses the support circuitry required for real-time applications. NodeMCU board is a development kit that consists of ESP8266 Wi-Fi-enabled chip and many other support circuitries. It is a popular board, which is handy to work with Wi-Fi-related projects. But […]
Smart cities must fulfil the need for sufficient fresh water, universal access to cleaner energy, ability to travel efficiently from one point to another, sense of safety and security, among others. Smart cities need to be able to efficiently combine a smart physical layer (ability to use sensors to connect physical assets like buildings, public […]
In a linguistically diversified country like India, incorporation any smart voice or speech recognition system that understands all regional languages seems like an impossible mission. This is something the creators of Gnani.ai took as a challenge and built their product. Gnani.ai, solves the problem of speech recognition for Indian languages, allowing the next 300 Million […]
This project is designed to control up to four home electrical devices using Node-RED, Raspberry Pi and local Wi-Fi network. Node-RED is a flow-based development tool for visual programming. Node-RED Node-RED is a graphical user interface (GUI)-based programming platform. It is a powerful platform to make Internet of Things (IoT) applications just by connecting its […]
Read Part 1 Interconnection networks are high-speed computer networks. These are connections between nodes where each node can be a single processor or a group of processors or memory modules. These connections carry or transport data from one processor to another, or from the processor to the memory so that the task is broken down […]
Use of brushless DC motors (BLDCs) is on the rise. But their control usually requires rotor position information for selecting the appropriate commutation angle. Normally, a Hall Effect sensor is used to sense rotor position. But in cost sensitive applications, a sensor-less commutation scheme is often desirable. The brushless DC motor driver circuit described here […]
This circuit monitors the AC current flowing through an electrical appliance and automatically turns the appliance off when the current goes beyond maximum or minimum threshold levels. If the appliance is drawing very high or very low current than the specified rated current, this indicates that there is a fault with the appliance. This guard […]
In this video, the presenter will be showing you how to make a low-cost DIY home security setup using recycled laptop webcams. Courtesy: DIY Perks
Presented here is a IoT enabled air pollution meter to monitor air quality on your smartphone using Blynk application and Arduino board. Blynk is an Internet of Things (IoT) platform to control Arduino, Raspberry Pi and the like over the Internet. In this project Blynk provides a digital dashboard on your smartphone that displays real-time […]
Recent entry of the network-on-chip (NoC) is likely to make system-on-chip (SoC) outdated soon. The new advanced NoC micropocessors can provide better AI integration with low power consumption. Several companies have already started offering NoCs. Microprocessor technology needs to be more advanced than the devices it is currently being employed in. As a result, nanotechnology […]
The minuscule LED night marker presented here is an automatic light beacon that wakes up at night, or when there is not enough ambient light in its environment. Anyone active in the dark (walking, riding, swimming, etc) can utilise this portable marker as a safety device to put a clear and distinct mark in darkness. […]