GadgetReboot

Arduino. C++

Phone_SLIM. POTS Telephone Subscriber Line Interface Module

KS0835F_Phone_SLIC. KS0835F phone line SLIC module breakout pcb

ESP32-A1S. Breakout PCB for the ESP32-A1S module including an audio amp and basic GPIO headers, USB interface

Piezo_Interface. 4 Channel Piezo element signal conditioner for triggering analog/digital inputs

AY-3-8910. AY-3-8910 Sound Generator PCB controlled by Arduino Nano

Midi_Breakout. Midi In/Out/Thru Breakout PCB

WiFi_Current_Transformer. ESP8266 based current transformer interface

misc_file_bin. Random files that don't belong anywhere in particular for one-off archiving

16x16_Analog_Switch. MT8816 based 16x16 Analog Switch Matrix

White_Noise_LFSR. ATtiny85 pseudo white noise generator using LFSR

GR_StepperIO. Dual Stepper module PCB with Arduino Pro Micro, PCF8574, and various sensor/switch IO's

LEDPanel. C++

Atari_2600_Video_Mod. Convert Atari 2600 from RF to Composite video and audio with RCA jacks

the_synth_demo. Demo files to generate audio using "The_Synth" Arduino PWM polyphonic generator

DTMF_Decoder. MT8870 DTMF decoder for POTS phone line interfacing

Varta_To_CR2032. Use a CR2032 3V coin cell as a replacement for 3.6V Varta NiCd batteries on old motherboards

AVR_Programmer. Atmel AVR programmer based on Arduino Pro Micro, intended for development into ISP and HVSP using various AVR programming interfaces and protocols.

TalkieDemo. Demo of Arduino Uno speaking with the Talkie library

4017_LED_Scanner. 8 LEDs scan back and forth like that futuristic black 80's Trans AM

RotaryUSB. LS30 Rotary Joystick to USB Interface

White_Pink_Noise. White noise and pink noise PCB

Digispark_OLED. 128x64 OLED display over I2C on Digispark ATTiny85, text and image display

PT2399_Breakout. PT2399 Echo IC Breakout Board

555_Devboard. A breakout board for the 555 timer

Relay_Solenoid_Driver. 32 Channel Relay/Solenoid Driver using MCP23017 and ULN2803 with I2C Control

INA219_OLED. Current, voltage, and power monitoring with an INA219 and OLED display on Arduino Uno

Super_Mini_Mega_Tester. 40 Pin Cable Tester platform using ESP32-C3

ATTiny_GPIO_Controller. ATTiny x04/x14 GPIO Controller with on-board MCP23017 I2C GPIO Expander

MCP23017_Eval. Demo pcb for MCP23017 with 8 relays, 4 buttons, and 4 spare IO header pins

Processing. Processing IDE Projects

USB_Serial. 3.3v/5v CH340 USB to UART interface with all flow control and indicator signals broken out

Mixer. Simple op amp audio mixer for small audio experiments

ADSR_Envelope_Demo. Demo of ADSR envelope filtering on simple audio tones with Teensy 3.6

TLC5615_DAC. 10 bit SPI DAC with Arduino Uno

GR_555_Controller. Controlling 555's using digital pots over I2C

8ChLED. 8 Addressable LEDs show logic input high/low states for easy probing

Breadboard_Buddy. PCB with power supplies, audio amp, LEDs, pots and level shifters to make breadboarding easier.

OpAmp_Buffer. Op Amp Input and Output buffer with Phone jacks for guitar effects prototyping

DTMF_Call_Progress_Tones. Generating DTMF call progress tones using the Mozzi synth library with ESP8266

AllPass_OpAmp. Dual op amp all pass filters for breadboarding of phaser effects

TTP229_Capacitive_Touch_Sensor. TTP229 16 input capacitive touch sensor with Arduino

ATTiny_LFO. Dual low frequency oscillators using ATTiny and MCP4725 DACs

GR_Teensy_Audio_Matrix. Teensy breakout PCB for various audio in/out paths and a Smart Matrix 4 compatible LED Matrix Output

Loop_Switcher. Guitar Effects Loop Switcher Matrix Board

BridgedT. Bridged T Oscillator

Low_Side_Switch. 16 channel low-side switch for driving resistive/inductive loads

Rotary_USB. LS30 to MAME Interface

555_Oscillator. 555 Oscillator with Duty Cycle and Frequency Control

StepperMover. Simple 555 and 4011 based A4988 Stepper Controller for quick bench testing of motors

PT8211_Breakout. Breakout board with headers for the PT8211 I2S DAC

Stepper_A4988. Simple demo of the A4988 micro stepper driver with Uno

Rotary_Optical_USB. Pi Pico USB Mouse/Keyboard for Arcade Trackball/Spinner and LS30 Mechanical Rotary Joysticks

TwinT. Twin T Notch Filter PCB for experimentation

AV_Amp. THS7316 three channel video buffer and stereo op amp audio buffer

Audio_Share. Take one stereo audio line input and share to 3 line outputs with level adjust

mcp42100_Breakout. Dual 100k digital pot MCP42100 Breakout Board

4_Stereo_Jacks. 1/4" Phone Jack Breakout PCB

Serial_UPDI. Serial UPDI Programmer

USB_RS485. USB to RS485 Adapter