I’m hoping to get some more work done on the handheld MEGAphone version of the MEGA this year, as well as supporting Wi Fi and cellular modems on the expansion board bridge. So it’s time to stick my head back into the fun of cellular modems.I’m using a Quectel evaluation board, because I...

   The revE expansion board and bridge board that connects it to the MEGA main board have arrived, as have the remaining components that I needed. The PCBs arrived within hours of shipping from China which is a new record for me they were even delivered on a Sunday I’ve already spotted...

   As part of the work on the MEGA expansion board we are going to have a working external drive port well almost. I have made the port on the revF board use a pin instead of an pin mini DIN, so that it can also power the drive. We’ll call the enhanced port and external drive...

   Spoiler: This is the new revE expansion board, and matching bridge board to connect it to the MEGA motherboard. Read below for the full story and adventure as usual, including to find out what that big hole in the bridging board is all about... The new revD MEGA expansion board PCBs...