Master theremino module connects to a host PC usb. Use a single usb port to get 500mA worth of power supply for your hardware. Or you can even use a Y cable and connect to two usb ports to double the juice and get 1000mA for your hardware out of your PC. This is usually enough for most application. However, power connection are available, to input the power source of your selection if you don't wish to use usb power for your devices.

Use the three pins (DATA, +5V, GND) for the theremino bus, or use the fourth pin DIR to connect to the optional optoisolated field bus interface. As easy as plugging a usb connector one side, and starting the theremino bus field on the other side. No configuration needed, jumpers, settings, dip switches or other mind-blowing procedures: theremino is ready to use from pluggin in. If more than one master is connected, they will negotiate individual addresses by themselves.

This special master flavour includes socketed microcontroller in dual in-line trough hole package, and provides 6 addidional Input Outputs on master itself.

Please use a usb A/B cable (separate purchase) to connect to Host PC.

More info on theremino project site

A robotic arm driven by theremino master: high fps and accuracy of theremino system beat serial-link based approaches