UniVibe Pedal
The Univibe is actually a footpedal-operated phaser or phase shifter for generating chorus and vibrato simulations for electric organ or…
Univox Super-Fuzz Pedal
This is the circuit diagram of Univox Super-Fuzz Pedal. This pedal is actually a 69-to-early 70"s design that consists of…
Sound Activated Light / Lamp
This is the schematic diagram of sound activated light or lamp. The lamp or light will be turned on while…
Vox Tone Bender Pedal
This is the circuit diagram of Vox Tone Bender Pedal. The circuit is very similar to Fuzz Face pedal. The…
Easy Build FM Transmitter
This is a low cost and easy build low powered FM transmitter. The range of the FM transmitter claimed about…
Two Chips AM Radio Receiver
This two chips AM radio receiver circuit is a tuned radio frequency (TRF) receiver of the standard AM (amplitude modulation)…
LAN Tester
This LAN tester circuit originally designed by Vassilis Stergiopoulos. This LAN tester circuit optionally has two designs. The first design…
Ultrasonic Motion Detector
This is a ultrasonic motion detector (or movement detector) circuit. The circuit claimed has a high movement sensitivity. Even air…
Telephone Switcher
This diagram is the schematic diagram of telephone switcher using relays. This device connects to the telephone line and can…