Light Dependent Switch Using ORP12 Photocell

This light dependent switch (dark activated switch) was constructed around the operation of a ORP12 photocell where light is the most important factor.

Infrared Modulation Identifier Via Remote Control

The circuit illustrates how the modulated carrier of infrared is measured by displaying the waveform on a frequency counter after the signal received is amplified.

PIC Controlled Navigation Board by 1490 Digital Compass

This project is PIC16F84 or PIC16F628 controlled navigation board based on Robson Company's 1490 digital compass.

Clap Controlled Electronic Switch by 555 Timer and 4013 D Flip-Flop

This electronic switch allows you to control an electronic device by only clapping your hands twice. It is based on three integrated circuits; 741 Op-Amp, 555 timer, and 4013 dual D flip-flop.

32 Channel IR Remote Controller by SL490

This is a 32 channel infrared remote controller circuit fundamentally includes key pad, decoder, transducer stage, an output and a battery. Circuit is like a pocket calculator in size. Commands are formed by using 8 x 4 matrix with 32 switches.

Voltage Controlled Switch by BC547

This voltage controlled switch circuit operates when a voltage level which is previously adjusted is applied to the input.