beeb wrote:I found it very useful to build the full IO board first and foremost (before the kick). And also the connectors and cables that link the 2 boards together, except the midi stuff.

This way, I can connect the two boards and test the output of each instrument as I build them. drifter7508 commented on another thread how to do this.

drifter7508 wrote:To test the sounds:
One cable end attached to +5V, the other end you quickly "tap/touch" to the Trigger point.
The IO board must be used and headphones or monitors connected to it.

The rimshot voice must be reset "to ground" after a trig, else it won't sound again.

Note that the trigger contact needs to be very very short or the sound will just be some kind of noisy held note.

And finally the guide doesn't mention the on/off switch and uses component legs to short the contacts instead, so normally you would put the on/off switch (I attached mine with 2 short wires) in the top-left corner of the IO board.

That's all I can share at the moment, from beginner to beginner