A prototyping lesson learned
I collected a cool purple envelope from our PO Box, containing 3 cool purple T-Board-328 PCBs. These were the first iteration in the prototyping process, and I learned again how important this process is.
Like a real beginner, I made an error in translating the self-etched design into a 2-layer layout. For the self-etched board, I needed to mirror the pins of the SMD voltage regulators so that they were then mirrored back to the correct layout during the toner-transfer process. Unfortunately in my excitement to gat a 2-layer prototype in my hands, I didn’t check, check and check again!