Computer Musician, Programmer, Hardware Hacker

The power block of the main board.

Above, you can see the main board close-up. The fuzzy terminal block on the left is where the main board receives power and ground from the I/O board. (At this point I still didn’t have an I/O board, so I had to improvise a supply.) The ground signal is then split off and connected to the sensor panels.

The terminal block has connections for 9V and ground – which is strange, because it turns out that the entire unit is powered off 12V. More on that later.

Using a pair of 9V batteries in parallel, I breadboarded a small power supply.

To my surprise, after powering the board, the board came to life.

The small, blinking light in the center of the main board responded when I moved controls, so that was promising, but the LEDs were only working on the left side.

In the next post, I’ll discuss how I tested the MIDI functionality.