Boards

Some peripherals use common, off-the-shelf hardware such as Pmod cards. Some peripherals use custom hardware. This repository contains design files for peripherals that use custom hardware.

The contrib directory has design files for boards that have been contributed. Each design is in its own directory, has its own LICENSE.txt, and should have a markdown file to describe the board.

The dpi directory has the design files for Demand Peripherals boards that can tolerate ringing on long cable runs.

Contributed Designs from Several Sources
Pmod compatible GPIO boards	Stereo 2 Watt Amplifier with volume control
Dual 7-amp H-bridge	Quad open-drain driver
Octal reflective sensor	Keyfob-type receiver
Quad 10-amp relay card	Demand Peripherals rotary encoder with LED
Quad slide switch	Quad low cost touch sensor
ATX power distribution card	Molex disk-drive power distribution card
5 volt switch mode regulator	15 amp power distribution card
25 amp power distribution card	Consumer IR receiver and transmitter

Daughter Cards from Demand Peripherals
Octal 12-bit analog to digital converter	Octal 8-bit digital to analog converter
Ringing tolerant I2C interface	Ringing tolerant SPI interface
32 channel binary input	Octal input and output
Six digit 7-segment display	AVR card
32 channel binary output	Quad 10K digital pot
Real-time clock with alarm	Quad slide pot
Text interface card	Octal HC-04 distance sensor interface