Ground
About the Ground PCB
Ground is an open source STM32 PCB design by extsui, published on GitHub under the MIT license. It is a 2-layer board measuring 100 × 86.6 mm, with 25 components from 18 distinct parts.
Its main chip is the STM32F303K8T6, from the STM32 family. Other key parts include the NJM2845DL1-33. By type, the board carries 8 capacitors, 4 connectors, 4 resistors, 3 diodes, 2 ICs and 2 switches.
From the project
KawaiiMakeMYBoard
Main components on the Ground
Ground bill of materials (BOM)
25 components, 18 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | STM32F303K8T6 | LQFP-32_7x7mm_P0.8mm | U1 |
| 1 | NJM2845DL1-33 | TO-252-2 | U2 |
| 1 | 8MHz | Crystal_HC49-4H_Vertical | Y1 |
| 1 | TTL-232R-3V3 | PinHeader_1x06_P2.54mm_Horizontal | CN6 |
| 1 | ST-LINK | PinHeader_1x06_P2.54mm_Horizontal | CN7 |
| 1 | Conn_01x05_Female | PinHeader_1x05_P2.54mm_Vertical | CN8 |
| 1 | CardEdgeConnector5P | CONN_CARD_EDGE_395-010-521-201 | CN9 |
| 1 | JP_BOOT | PinHeader_1x02_P2.54mm_Horizontal | JP1 |
| 1 | RESET | SW_PUSH_6mm_H8mm | SW1 |
| 1 | MODE | SW_PUSH_6mm_H8mm | SW2 |
| 2 | SS2040FL | D_SOD-123 | D1, D2 |
| 1 | LED | LED_1608_HandSolderingCustom | D3 |
| 1 | 47uF | CP_Radial_D6.3mm_P2.50mm | C1 |
| 1 | 0.1uF | C_1608_HandSolderingCustom | C2 |
| 2 | 22pF | C_1608_HandSolderingCustom | C3, C4 |
| 1 | 10uF | C_1608_HandSolderingCustom | C5 |
| 3 | 0.1u | C_1608_HandSolderingCustom | C6, C7, C8 |
| 4 | 10k | C_1608_HandSolderingCustom | R1, R2, R3, R4 |
Ground design files
The KiCad project lives in the extsui/GardeningBoard repository on GitHub; these links point at the commit this page was built from.
Ground: common questions
What microcontroller does the Ground use?
The Ground is built around the STM32F303K8T6, from the STM32 family.
How big is the Ground PCB?
The Ground measures 100 × 86.6 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Ground?
25 components, from 18 distinct parts. The full bill of materials is listed on this page.
Where can I download the Ground design files?
From the extsui/GardeningBoard repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Ground design in my own project?
Yes, under the terms of its MIT license, which extsui chose for the repository.
Can I test firmware for the Ground without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.
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