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ancient-sound
A library of samples of ancient European sound samples.SuperKoch
A idea for a program that uses German psychologist Ludwig Koch's method to learn how to receive and send morse code.piezo-balanced
A small board that uses a LSK389B, for preamplification and impedance matching of two piezo electric crystals. It has balanced input and output.piezoelectric
A write-up with links to different versions of impedance buffer and amplifiers for piezoelectric elements.wardrive-leds
This is a Python script that controlls the leds connected to the GPIO header on a Rasberry Pi model B.Europe-ergo
A 94 key ergonomic, split keyboard suitable for European countries.double-gain
A small PCB that uses two TL082BCP op amps to amplify a signal from a contact microphone.bruene-bridge
A Phase compensated VSWR measuring bridge.B230FK-FT
Stock ignition map for Volvo B230 FT/FK engines with the 148 EZK ignition box.48power
A small PCB that supplies +48 volt phantom power to a balanced audio system. It also has audio out.98keys-ergo
A 98 key ergonomic. split keyboard.erope-ergo-ex
Tandberg
Tandberg TDV 2200 keyboard a serial keyboard for a serial terminal, archived from a google sitePirotator
PiRotator This is the rewritten code for raspberrypi based antenna rotator. See more of project: https://jkry.org/ouluhack/PiRotatorpassiveSonar
A idea for a DIY passive towed hydrophone array.83keys
A 83 key keyboard, ISO stylepiezo-9v
A small PCB for pizoelectric amplifier, runs on 9VSleipnir
Open source APRS display unit with navigation ideas.dual-paddle
A repository with a dual paddle morse keysmd-adapter
SMD adapter with LT6234 8-Pin SO to DIP 8 pinMjollnir
A Bias-T cicuit board that handles 10A 60 volts.diplexer
HF+6M lowpass and 4M highpassbias-T
Two small PCB boardsfor DC bias voltage extraction and insertion on a 50 ohm coax cable.double-dip
A small PCB that uses two TL082BCP op amps to amplify a signal from a contact microphone.Love Open Source and this site? Check out how you can help us