This board was designed out of a need to power Simple-Add Ons (SAOs) being tested and worked on, without having to pull out an old event badge or rig something up with a bench PSU.. With the abilities of the modern Bus Pirate, you can even operate it at different voltages to simulate the batteries going flat.

In addition to the power pins, the planks also connects up to the I2C and GPIO pins, allowing the SAOs to not only communicate with the badge, but with each other as well.'