R2 Electronics Build Part 5: No Back Door? No Problem!

The next phase of the electronics build begins: I need to refine my workbench proof-of-concept board and reconfigure it to fit inside R2. I look at a few valuable lessons learned from my prototype, and try to figure out the best way to work around my droid's lack of a removable back panel.
2.1 Channel Amplifier: www.amazon.com...
Spring latches: www.amazon.com...