Here the cheap hearing aid to help people who have hearing loss. Commercially available assistive hearing devices are quite expensive. This is a cheap hearing […]

Here is the remote control tester circuit. This circuit is really a simple and easy tester for verifying the basic operations of an infrared remote […]

Here the circuit diagram of low cost water pump controller. The automatic pump controller minimizes the need for any manual switching of water pumps installed […]

This is a very simple adjustable analog timer circuit diagram. You can build this circuit just for fun, for newbie project or may be…, this […]

The above diagram is the schematic diagram of an electronic motor starter circuit. This motor starter protects singlephase motors against voltage fluctuations and overloading. Its […]

This is a logarithmic amplifier circuit based on National operational amplifier LM11C. Unusual frequency compensation provides this logarithmic converter a 100 us time continual from […]

You can easily activate the LED from home electrical power line with this circuit diagram. You just need to add a nonpolar capacitor and a […]

Here the Arduino UNO schematic diagram (click to enlarge): About Arduino UNO: The Arduino Uno is really a microcontroller board based on the ATmega328. It […]

The following diagram is the circuit diagram of telephone amplifier, build based small amplifier IC LM386. This is a easy build telephone amplifier There is […]