This guide details how to build a simple sawtooth wave generator using the venerable 555 timer chip...
Recently Published
Peephole Proximity Sensor
Peephole proximity sensor presented here is an inexpensive nearness detector for hobby electronics...
Fish Bite Alarm v1
A fish bite indicator is a mechanical bell or electronic alarm that indicates to an angler that something is happening at the...
Cheap CH551G MCU with USB Controller – Part 1
It was during Christmas week last year that I received an unexpected gift packet from an online store in India. What caught my...
Analog Optocouplers – Quick Starter
The prime intention behind this little post is to share some notes about analog optocouplers which might be useful for hobbyists...
Mighty LED Flashgun v1
This article is a mere pointer on how to build a mighty light-emitting diode flashgun controller. The presented project idea is...
Micro Mouse Wiggler – DIY
Finding your computer asleep when you come back from your tea break might be annoying but what’s even more frustrating is...
Door/Window Knock Sensor – Simple DIY Project Ideas
Recently I came across a dirt-cheap knock sensor module labeled as Keyes KY-031 Knock/ Impact/Hit Sensor. The other day I bought...
Embedded Systems
Different Types of Sensors – Analog and Digital
Sensors have become an integral part of the embedded system. Right from your mobile to security systems installed at home. They...
UART Communication Protocol – How it works?
UART (Universal Asynchronous Transmitter Receiver), this is the most common protocol used for full-duplex serial communication...
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...
What is RS232 Protocol and How it Works?
Historically, RS232 Communication protocol is an old serial communication protocol developed by EIA (Electronics Industry...
Electronic Circuits
Poor man’s Driveway Alarm
How to Build a Cheap Panic Alarm/Button?
BJT & Diode Temperature Sensors – A Quick Walk
Locker Security Switch
Poor man’s RC Battle Switch/RC Relay
Audio Induction Loop Receiver (Quirky Ideas)
Solar LED Book Light
Poor man’s Lost Model Alarm (LMA)
Poor man’s Dog Silencer/Whistle
