In most electronic circuits different components are used to build robust embedded systems. To name a few: Resistors, Capacitors, Inductors, Diodes, and Transistors, Flip-flops and Logic gates. Among these, the resistor is one of the basic components used in Emergency lighting, Medical Devices, Battery operated equipment and many more applications. Surprisingly enough, the resistor is… [Read More]
WiFi Relay Module Primer – Part 1
Most modern wireless experimenter kits comes as modules that just plug together rather than individual components. Electronic newbies, practicing engineers, and experienced hands alike are sure to find that these inexpensive modules interesting. Recently I bought a bunch of ready-to-use WiFi Relay Modules (ESP8266 WiFi 5V 1 Channel Relay Delay Module) from eBay. Here I’d… [Read More]
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 current of 10 to 20 mA for proper operation (maximum typical dc current is 30 to 50 mA). The color… [Read More]
What is UART and How does it Work?
UART communication Serial communication has been increasingly adopted right from the past to present to establish communication between devices. This tutorial will provide you with a practical overview of UART interface. UART is the abbreviated form of Universal Asynchronous Receiver Transmitter. You will learn the working of UART (Universal Asynchronous Receiver and Transmitter) and setup… [Read More]
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 snakes on your property, quickly and safely. Structural details of the standalone, do-it-yourself, solar electronic snake repellent gear is shown… [Read More]
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 generic ceiling fans without any strange electronics on the inside. Working of the circuit is very simple and self-explanatory. When… [Read More]
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 best books to learn. Also recommended to read: Career in Embedded Systems 1. C Programming Language by Brian Kernighan and… [Read More]
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 with the help of precision voltage reference ICs, and for high-impedance DVMs, the AD584 (http://www.analog.com/AD584) precision programmable voltage reference IC… [Read More]
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 project is built around an Arduino Nano microcontroller board. Another key component is an I2C LCD panel, which is easier to… [Read More]
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 I/O pins it can do most of what the microcontroller in the Arduino can do. Further, you can program it… [Read More]
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