· Ultrasonic radar · Electronic fish lure · Ultrasonic sound receiver · Experimental data transmitter for fiber optics · Experimental fiber optic receiver · Ion detector · Darkness monitor · Electroscope · Simple event counter · Geiger...
Wednesday, December 28, 2005
Thursday, October 27, 2005
Misc audio (also see Music, Amplifiers, Preamp)
· Pink noise generator · A Schottky-based Saw-to-Tri converter · Saw to triangle converter · Improved saw to triangle converter · Voltage controllable LFO · White noise generator · Electronic siren · Two-tone siren · Underwater...
Microcontroller based schematics
· PIC based packet radio encoder (PDF) · RS485-Version of the SAB80C535-Microcontrollerboard · PC IR receiver based on PIC16F84 · Record and play fast 1-bit sound on a PIC micro · AT89C2051/4051scanning 7-segment display and keypad · ...
Medical and health related schematics
· Snore alarm electronic device · Heartbeat transducer · ECG Amplifier · EKG/EEG circuit · Radiation Dosage-Rate Meter · Heartbeat monitor · Cranial Electrotherapy Stimulator · Automated crib lights · Jogging timer · Tan timer...
Lighting schematics
· Garden light switch · DMX lighting and special effects · Microcontroller Multichannel Light Dimmer · Digital timer light switch · Flashing flashlight · Flashing road baricade for construction workers · Hand clap lamp control ·...
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