If you are willing and able to work on the IN-18 one, I'd appreciate the help. It's going to be a bit ugly, it's a whole new set of code, and it's the first prototype of the PCB, but with some code hacks and bodge wires it might work out well.
The PCBs arrived yesterday, but I haven't started testing them out yet.
Let me check out the basics (the HV and the backlights) and then we can start on it. I'll send you the bits I have on stock, but there might be some odds and ends that you have to get yourself. I'm really looking for someone to "keep me honest" in the manual.
Although, I have not fully convinced myself not to just release everything open source (hardware and software). I designed it to be fully open, but I'm still a bit wary of letting my next generation code out as open source. I've been ripped off too much recently to take it as a given, like I used to in the past.