Portable LED Tester
The circuit below shows a simple light emitting diode tester, powered from a 9V compact battery,which can be used to test almost all common light emitting diodes (LEDs). Common LEDs require a dc forward bias […]
UART Communication Protocol – How it works?
UART (Universal Asynchronous Transmitter Receiver), this is the most common protocol used for full-duplex serial communication. It is a single LSI (large-scale integration) chip designed to perform asynchronous communication. This device sends and receives data […]
Efficient Snake Repeller
Solar electronic snake repellent presented here is a proven solution to keep all poisonous snakes out of dog kennels, stables, etc. All you need is to simply place the device on the ground to remove […]
Automatic Fan Switch with PIR Motion Sensor
Here is one interesting circuit of an automatic, passive infrared motion sensor controlled, speed regulator switch for ceiling fans. The circuit, designed for AC230V operation is realized using generally available discrete components, and optimized for […]
7 Best Books to learn Embedded Systems that excels your Career
Getting knew about embedded systems is toilsome for an engineering graduate and a fresher who has just passed out. To learn the basic concepts and get an overview of embedded systems here are the 7 […]
Simple DVM Voltage Reference
Validating the calibration of an electronic test and measurement instrument such as a digital voltmeter (DVM) is very crucial especially after many years of service. Nowadays, it is easy to build a compact voltage reference […]
Nano Digital Volt Meter
Nano Digital Volt Meter is a microcontroller based simple DIY project for electronics hobbyists and makers. It is a compact digital voltmeter which can incisively measure input dc voltages in 0 to 55V range. The […]
USB Xmas Candle
Here is a fascinating USB-powered LED Candle armed by the Digispark USB Development Board based on Attiny85 microcontroller. Thanks to Digispark – despite the lilliputian size, it’s packed with capabilities, and apart from having fewer […]
Haptic Feedback Module – DIY
Wearables and dozens of other consumer electronic devices make use of vibro-tactile feedback to enhance the level of user interaction. The most popular hardware frequently used to provide haptic feedback is the ‘Pancake Motor’. Pancake […]
What is RS232 Protocol and How it Works?
Historically, RS232 Communication protocol is an old serial communication protocol developed by EIA (Electronics Industry Alliance)/TIA (Telecommunications Industry Association)-232 in the year 1962. Modern hardware designs use innovative serial communication protocols like USB, Ethernet, and […]