Thank you bryan. I am sure you are correct. where are the instruction on how to flash it. My PI model B will be here on thursday, so I may just wait till then.
I have finished assembly of my HM 4.2.4 and I don't have the correct PI yet. I want to use the HM as a standalone controller, but it will not run/boot. All my voltages look good, and no obvious solder blobs or bridges. I have double and triple checked component placement. I can't tell why it...