libftdi bit bang interface for Super4 USB Relay
USB hub powered, modular relay control board. Relays (4 x): 5 Amp 30VDC, 5Amp 250V AC
Uses libftdi instead of the libftd2xx drivers from FTDI.
make
./super4 -l # List devices
./super4 -m 15 # All relays on.
./super4 -m 0 # All relays off.
./super4 -r # Read relay status.