The perfect OSHPark PCBs arrived today, fedex instead of usps this time. 

So it's time to test ! Nope, first warm this soldering iron... There are 92 components per board... However it is always a pleasure to work on these purple boards, they are really accurate and well made. 

I noticed I made small mistakes on the numbering, such as labeling the inputs from 1 to 8, but the outputs from 0 to 7...

But... it's working :)

The voltage source is 180v and correctly multiplied by two for the anodes. I still have some artifacts during animation: some pixels take some time to switch off. That's why I let separated on the circuit the voltage source for the anodes and the bias voltage for the cathodes. Maybe some better parameters can be found.

The next steps now are the following. Solder 7 more boards. Make a quick micro-controller program to scan correctly the 32 inputs (8 anodes data, 8 anode board select, 8 cathodes select and 8 cathode board select). Mount everything together. Send data from a computer or raspberry pi to the uC with the serial port.

The adventure just begin :p