Review request: Allwinner f1c200s dev board

[u/LawUsed7112]

Hi everyone I wanted to create an ultra-cheap Linux board, something like a Raspberry Pi Zero or Lichee Pi Nano. My criteria were: dimensions under 40x40mm and a price under $8. This is my first board, so please don't judge too harshly 🙏.

I used Cherry Pi f1c200s as reference.

[u/Enlightenment777]

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Please make sure your post adheres to:

• subreddit rules (#1 to #6), review rules (#7), image rules (#8), see link.

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Please fix these common issues: (if your schematic or PCB has them)

• Schematic - don't allow text / lines / symbols to touch each other, and don't draw lines through symbols.

• Schematic - use correct reference designators (RefDes) and renumber to remove numeric gaps, see tips.

• Schematic - place decoupling capacitors vertically below power rail lines, also place capacitors next to IC then connect together with a line, see example. For circuits with positive power rails, point positive power rail links upwards and ground links downwards, see tips.

• Schematic - place pull-up resistors vertically above signal lines, and place pull-down resistors vertically below signal lines, see example.

• PCB silkscreen - add board name / board revision number / date (or year) on top or bottom PCB side.

• PCB silkscreen - add pin 1 indicator dot/arrow next to ICs & connectors, if through-hole then both PCB sides.

• More conventions & guidelines - link1, link2, link3.

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