What would you like to build?
Search Arduino, ESP32, circuits, amplifiers and more.
Ideas become circuits.
Circuits become projects.
Practical Arduino, ESP32 and electronics tutorials. Explore real projects, learn how circuits work and build something extraordinary.
Slim 64 × 16 cm Electronic Cricket Scoreboard
Slim 64 × 16 cm electronic cricket scoreboard displaying Runs, Wickets and Overs in rotation with remote and browser control.
Explore this project →Choose your next build
Tag: Transistor
9 articles
Dark sensor on breadboard
The circuit is ready for testing. Connect battery terminals and see the output. As you block light falling on LDR(Light dependent resistor), the...
Read tutorial ↗
The simplest and the cheapest FM transmitter- Do-it-yourself(DIY) kit for amateurs
Practical electronics projects and step-by-step guidance for makers.
Read tutorial ↗Assembly tutorial- FM transmitter DIY kit
Practical electronics projects and step-by-step guidance for makers.
Read tutorial ↗
How to use UM66 or BT66 Musical IC
Learn how to use UM66 or BT66
Read tutorial ↗
Dark sensor using two transistors
Practical electronics projects and step-by-step guidance for makers.
Read tutorial ↗
AM receiver from dark sensor
In this case, LDR has been replaced with capacitor C1-0.01uF and resistor R3-1K has been replaced with L1 & VC1. In place of a LED, a Piezo...
Read tutorial ↗
Basic RC circuit
For the circuit to work as light operated musical bell, we need to connect the SW1- switch to N/C terminal of relay. LDR has to be kept in a dark case.
Read tutorial ↗
Dark sensor using BC557
An automatic dark sensor can be made using a PNP transistor(BC557).
Read tutorial ↗
Building a circuit on a breadboard
A breadboard is a device for testing temporary electronics projects. Components used to test a circuit can be reused for other projects. None of...
Read tutorial ↗