Hi, First of all, thanks to TK for making public such a great project! When my Midibox parts arrived, I spent an entire 2 days and constructed everything. Not wanting to wait, I mounted the pots and buttons onto cardboard, I suppose it's a Cardboard MidiBox at the moment. I powered the unit with 9VAC and got the MIOS 1.9f message, followed by READY. After a few weeks, I've had time to return to the project. I connected the Midibox to my MIDI IN/OUT, then downloaded and installed MIOS Studio. First thing I did after configuring MIDI Device Routing was test the MIOS LCD Message - success, yay. I then proceeded to download midibox64e_v2_2a, and used MIOS Studio to install midibox64e_v2_2a\main.hex. I get some output on the LCD display, but not what I expect from reading the documentation and forum. It is the same whether or not I have DIN R5 / AIN R4 boards connected: Int.1 [] [] [] [] [] [] [] [] 1 |CC# 7 [127] [] (The [] above is a full 8x5 block, and the first one on the first line is flashing a few times a second) The box appears to be ignoring all input from buttons and encs. On the DINR5 board, I tested voltages Vs->D7,Vs->D6, etc. and they were all 5V, this seemed to make sense as I understand they are high when open, tip to 0v to close. (Wondering if I had uploaded the right file, I tried uploading setup_midibox64.hex instead, and the LCD display went nuts appearing to scan inputs, but I couldn't get it to stabilise even with all boards connected and all analogue inputs connected to Vs. The box was unresponsive to MIOS Studio (the MIOS LCD message wouldn't work, saw no hex at all in MIDI In monitor), so I uploaded srio_interconnection_test in manual mode successfully, then after this bad experience re-uploaded main.hex. So, back to square 1!) If anyone could help, I would greatly appreciate it. Regards, zapps Melbourne, Australia