Minimal STM32F042F6Px development board. USB-C, GPIO headers, onboard 3.3V regulation. No peripherals, no bloat.
Licensed under CERN-OHL-S v2.
- STM32F042F6Px (32KB Flash, 6KB RAM, 48MHz)
- USB-C (USB 2.0 Full Speed via PA11/PA12)
- LP5912-3.3DRV LDO — 3.3V regulated output from 5V USB
- BOOT0 and RESET buttons
- SWD header (SWDIO, SWCLK, 3.3V, GND)
- GPIO headers — all available pins broken out
- Power indicator LED
| Designator | Footprint | Qty | Value |
|---|---|---|---|
| BOOT1, RESET1 | SW_SPST_B3U-1000P | 2 | SW_Push |
| C1 | 0402 | 1 | 0.1µF |
| C2, C4, C5 | 0402 | 3 | 1µF |
| C3 | 0402 | 1 | 10µF |
| D1 | 0402 | 1 | LED |
| J1 | USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | 1 | USB_C_Receptacle_USB2.0_16P |
| J2, J3 | PinHeader_1x09_P2.54mm_Vertical | 2 | Conn_01x09 |
| J4 | PinHeader_1x04_P2.54mm_Vertical | 1 | Conn_01x04 |
| R1, R2 | 0402 | 2 | 10kΩ |
| R3, R4 | 0402 | 2 | 5.1kΩ |
| R5 | 0402 | 1 | 1kΩ |
| U1 | TSSOP-20_4.4x6.5mm_P0.65mm | 1 | STM32F042F6Px |
| U2 | WSON-6-1EP_2x2mm_P0.65mm_EP1x1.6mm_ThermalVias | 1 | LP5912-3.3DRV |
| Header | Pins |
|---|---|
| J2 | +5V, +3V3 (x2), GND, GPIO_6, GPIO_7, GPIO_8, GPIO_9, GPIO_10 |
| J3 | +5V, GND, GPIO_0–GPIO_5, GND |
| J4 | +3V3, SWDIO, SWCLK, GND |
will be added later
will be added later
Bit32F042F6Px/
├── hardware/
│ ├── Bit32F042F6Px.kicad_sch
│ ├── Bit32F042F6Px.kicad_pcb
│ └── gerbers/
├── images/
│ ├── schematic.png
│ ├── pcb_top.png
│ ├── pcb_bottom.png
│ ├── render_top.png
│ └── render_bottom.png
├── LICENSE
└── README.md