profdc9's repositories
TrebleSynth
A Raspberry Pi Pico miniature synth keyboard inspired by analog keyboard with analog controls and MIDI
BizBopWhingWhang
A device for twiddling the mouse optically
DRSSTC-PCB-Pack
A pack of PCBs for a dual resonant solid state tesla coil setup. Pretty much everything you need.
GuitarPico
A guitar effects processor based on the Raspberry Pi Pico
CapacitiveTouchpad
A demonstration of a capacitive touchpad using a RPi Pico
RFBitBanger
A QRP digital transceiver created from readily available parts for off-the-grid maintenance
Arduino_STM32
Arduino STM32. Hardware files to support STM32 boards, on Arduino IDE 1.8.x including LeafLabs Maple and other generic STM32F103 boards
SchottkyNoiseSource
A Schottky RF noise source based on the BAT17 diode
ParanoiaBox
A standalone elliptic curve/AES file encryption and decryption device
FreeCADParametricModels
A bunch of useful FreeCAD parametric models I've designed
Apple2Card
Apple II Peripheral Card that Interfaces to a ATMEGA328P for SD card storage
FlexibleCharger
An Arduino-controlled charger for different kinds of batteries, or it can be a standalone power supply
HighVoltageOpAmp
A discrete high voltage op amp that uses 5551/5401
OneChipTerminal
A single chip VT100 terminal based on the STM32F103C8T6/CS32F103C8T6
Apple2Shield
An Apple ][ bus card that allows an Arduino and/or a Shield to be connected to the Apple ][ bus.
PowerAmpAudio
Power Amplifier based on Michael Chua's C300 amplifier