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There are many types of robots, from simple toy cars to advanced industrial robots. The Wi-Fi-controlled IoT robot described here uses NodeMCU and Blynk app. It can be controlled wirelessly using any Wi-Fi enabled Android smartphone. The prototype wired...
Here is a simple hi-fi audio stereo power amplifier based on TDA2616 IC. This amplifier works on two 12V batteries or one ±12V AC/DC adaptor. The circuit can deliver 2x12-watt output power for 8-ohm loads with ±16V dual-power supply. Circuit...
A Serial Data debugger is a tool used to test and debug other programs or target programs. This project is based on Atmega16A microcontroller (MCU), and is used to check the correct data received through universal synchronous/asynchronous receiver/transmitter (USART)...
Technology is advancing daily and everything is turning smarter. A number of traditional devices that we use in our homes are becoming smarter now, including doorbells that are evolving with new features and styles. Today you will find many...
Presented here is the Hydropower Generation circuit that generates power from a water pipe in a building using a microturbine. The generated electricity can be used to charge batteries, which can be used for emergency lighting or other such...
The Internet of Things (IoT) is being widely used in industrial and commercial applications. This article describes how to monitor devices or things connected to WeMos D1 board, which acts as a Web server. Pin description of WeMos D1...
Presented here is a window alarm annunciator based on Arduino Uno board. An annunciator is mainly used in process plants, power plants and industries to monitor various plant conditions to alert operators about abnormal conditions or parameter deviations. It...
This video explains how to create an alarm that is activated when something or someone, blocks a beam of light - a simple security alarm. With the addition of a relay, this circuit can be modified to control lights,...
Here is a low-ripple and low-noise 48V regulated phantom power supply for an audio preamplifier and driver. Such power supplies require well-filtered, low-ripple and low-noise output voltage with current less than 200mA. These are relatively rare and expensive. Presented...
This project is based on a capacitive touch sensor for controlling four electrical appliances. Toggle switches have been used for operating lights or fans, and momentary press switches for operating electric doorbells. Most of these switches are mechanical and...