John, I agree - a new Nano is on my "to do" list. I thought about using a Nano Mini, as I have several of them, but the footprint won't work. However - I took the 12MHz crystal off of the Uno clone I had scrounged the mega328 from, and tacked a couple of wires to the crystal pins on the CH340 on the Nano board, and was able to download the Raduino sketch! Once I did that, I re-attached it to the Raduino PCB, plugged in the LCD, and "Bob's yer Uncle" I had the synth up and running. I am not sure that I like having the 12MHz crystal with flying leads, though, so I think I'll order a new Nano to make it look nice, but you can imagine how relieved I was to see that nice square wave from the synth board!
