Description of prototype
The design consists of two single-layer PCBs, soldered together with a gap. The final board is anticipated to be a single two-layer board (may be more layers if I can squeeze more functionality out of it).
The board size is 97mm wide by 64mm tall. It uses USB for power, but can theoretically be driven by a battery pack. I would like to have a recharging circuit in there if possible.
Top board - UI board
160x128 OLED display (18-bit colour)
Analogue joystick (also has switch, which is not wired).
Keys
Reset switch
Bottom board - main board
AT91SAM7S256 ARM CPU
USB connector (currently only used for power)
Power convertor (5V to 3.3V)
JTAG programming connector
SDCard interface (will probably be dropped from final version)
Audio interface
3.5mm stereo jack
Yes, there have been some board modifications to fix problems I hadn't forseen, and yes, they are held with blue-tack. The PCB designs have already been back-ported with the changes.
Date last modified:
2019-10-19 20:00:46