A Ground Fault Indicator

This is a very simple circuit, but make sure you build it right! If you add a plug to this, make double sure it is wired with the Corre...

Reliable Car Battery Tester

 This circuit uses the popular and easy to find LM3914 IC. This IC is very simple to drive, needs no voltage regulators (it has a built ...

Remote control Tester

Here is a handy gadget for test- ing of infrared (IR) based re- mote control transmitters used for TVs and VCRs etc. The complete gadget ...

3-digits Digital Volt Meter

  This is simple 3-digits digital volt meter.PIC16F676 used to read analog signal(voltage) and display the value on 3-digits 7-segment.You...