This directory has the hardware design files for peripherals that need custom hardware. There are also design files for some simple accessories and for one FPGA card. Each design is in its own directory, has its own LICENSE.txt, and should have a markdown file that describes the board.
While many design use Eagle, the preferred format is KiCad.
pmgpiontw: Pmod compatible GPIO boards from Demand Peripherals
dpaamp: Stereo 2 Watt Amplifier with volume control
dpd7hb: Dual 7-amp H-bridge
dpdrv4: Quad open-drain driver
dpgpio4: Demand Peripherals quad GPIO cards
dpirio: Consumer IR receiver and transmitter
dpirp8: Octal reflective sensor
dprf315: Keyfob-type receiver
dprly410: Quad 10-amp relay card
dproten: Demand Peripherals rotary encoder with LED
dpsw4: Quad slide switch
dptouch4: Quad low cost touch sensor
atxpd: ATX power distribution card
ddpd: Molex disk-drive power distribution card
smr: 5 volt switch mode regulator
pd15: 15 amp power distribution card
pd25: 25 amp power distribution card
protocards: Prototyping cards
Baseboard4: Demand Peripherals Spartan-3E FPGA card