submodular/SN-L00
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Author SHA1 Message Date
florian.berthold 36a732f767 Add custom KiCad libraries for RP2040-Zero and OLED 
Symbol library (SN-L00.lib/):
- RP2040-Zero: 18-pin module symbol with all GPIO labels
- OLED_128x32_I2C: 4-pin I2C display symbol

Footprint library (SN-L00.pretty/):
- RP2040-Zero: 2x9 through-hole, 15.24mm spacing, with pin labels
- OLED_128x32_I2C: 38x12mm module outline, 4-pin header

Auto-loading via fp-lib-table and sym-lib-table.
 2026-01-23 03:59:48 +01:00
florian.berthold f100eb23bf Add KiCad schematic and updated BOM 
Schematic includes:
- Power section: SS14 reverse protection, AMS1117-3.3 LDO
- RP2040-Zero and OLED module headers
- Trigger output: 74LVC1G17 Schmitt buffer
- Return input: voltage divider, BAT54 clamps, MCP6001 buffer
- Button with pull-up, power LED

BOM updated with correct parts and LCSC numbers.
ASCII schematic reference in hardware/kicad/README.md.
 2026-01-23 03:30:30 +01:00