Main Display Board

Charlieplexed 28x18 LED matrix display

Charlieplexed 28x18 LED matrix display

Main board PCB

Main board PCB

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Flex USB Passthrough Board

Schematic is really simple, it’s mostly just USB passthrough

Schematic is really simple, it’s mostly just USB passthrough

PCB - the castellated holes on the top tab will bend over the back of the phone and be soldered to corresponding pads on the main display board

PCB - the castellated holes on the top tab will bend over the back of the phone and be soldered to corresponding pads on the main display board