• Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.


  1. simrantogether

    my new 'Arduino -uno ' kit

    hello everyone... I've just bought one 'Arduino - uno' kit for myself .... I am a beginner in this field... I've not even opened the seal of that kit.. I have two questions: 1. do i need a separate power supply for this board (kit) ... or the data cable (with usb) is enough to power this.! 2...
  2. A

    An audio amplifier for beginners

    Hey guys I just uploaded my tutorial on how to build a simple audio amplifier using an LM386 chip. When using the maximum supply voltage it can reach a power output of roughly 1 watt. Hope you find it useful. Schematic <Mod edit: If you have something to share, please post it here. Do not...
  3. S

    Raspberry Pi: magazine and data, free download

    For those who are interested in the Raspberry Pi here is a link to the MagPi magazine and tutorials which can be downloaded gratis: https://www.raspberrypi.org/magpi/issues/ spec

EE World Online Articles