hungrybutterfly
Member
Despite the Teensy 4.1's tiny size, I want to go smaller. I'm certain this is frowned upon but I'm trying to be a bit naughty by chopping the board at the place shown in the pic. After this is done, and using this schematic I'm trying to wire the psram directly to appropriate points on the board. This looks like 7 wires for the full 16MB plus 2 for power and gnd. Unfortunately I can't get it to work. I wrote a memory test program which worked before surgery and doesn't work afterwards. I've triple checked all connections, there's no shorts and power is getting to the ram chips. Obviously there could be many reasons why this could go wrong so my question is has chopping the board in this way also severed some other internal track i'm not aware of?