ESC v1
About the ESC v1 PCB
ESC v1 is an open source STM32 PCB design by 22060, published on GitHub. It is a 4-layer board measuring 49.5 × 49.5 mm, with 117 components from 25 distinct parts.
Its main chip is the STM32G431CBUx, from the STM32 family. Other key parts include the L6389EDTR, ACS711xEXLT-15AB, BD4104 and ADuM1201AR. By type, the board carries 43 resistors, 25 capacitors, 13 diodes, 12 ICs, 12 transistors and 9 connectors.
From the project
git clone https://github.com/22060/2025 --recursive
Main components on the ESC v1
ESC v1 bill of materials (BOM)
117 components, 25 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 6 | L6389EDTR | SOIC-8_3.9x4.9mm_P1.27mm | U1, U2, U3, U4, U5, U6 |
| 3 | ACS711xEXLT-15AB | Allegro_QFN-12-10-1EP_3x3mm_P0.5mm | U8, U9, U12 |
| 1 | BD4104 | SOP-J8 | U10 |
| 1 | ADuM1201AR | SOIC-8_3.9x4.9mm_P1.27mm | U11 |
| 1 | STM32G431CBUx | QFN-48-1EP_7x7mm_P0.5mm_EP5.6x5.6mm | U19 |
| 12 | ~ | RD3L07BBG | Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8 +4 |
| 2 | Conn_01x05_Pin | JST_XH_S5B-XH-A_1x05_P2.50mm_Horizontal | J1, J2 |
| 2 | Conn_01x03_Pin | PinSocket_1x03_P2.54mm_Vertical | J3, J4 |
| 1 | Conn_01x06_Pin | JST_ZH_B6B-ZR_1x06_P1.50mm_Vertical | J6 |
| 1 | Conn_01x04_Pin | PinSocket_1x04_P2.54mm_Vertical | J8 |
| 1 | Conn_01x02_Pin | AMASS_XT30PW-M_1x02_P2.50mm_Horizontal | J9 |
| 1 | Conn_01x03_Pin | Molex_KK-254_AE-6410-03A_1x03_P2.54mm_Vertical | J13 |
| 1 | Conn_01x04_Pin | JST_PH_S4B-PH-K_1x04_P2.00mm_Horizontal | J17 |
| 3 | ~ | SOT-89-3 | NJM78L00SU1, NJM78L12SU3, NJM78L33SU2 |
| 12 | LED | LED_0603_1608Metric | D1, D2, D3, D4, D5, D6, D7, D8 +4 |
| 1 | WS2812B | LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm | D14 |
| 17 | 1u | C_0603_1608Metric | C1, C2, C5, C6, C9, C10, C11, C12 +9 |
| 3 | 0.1u | C_0603_1608Metric | C25, C27, C29 |
| 3 | min0.33u | C_0603_1608Metric | C26, C28, C30 |
| 2 | C | C_Elec_10x10.2 | C31, C32 |
Show 5 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 12 | 10 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R2, R7, R8, R13, R14, R15, R16 +4 |
| 12 | 10k | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R3, R4, R9, R10, R17, R18, R19, R20 +4 |
| 13 | R | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R37, R38, R39, R40, R41, R42, R43, R48 +5 |
| 3 | 5m | R_2010_5025Metric_Pad1.40x2.65mm_HandSolder | R44, R45, R51 |
| 3 | 22 | R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R46, R47, R52 |
ESC v1 design files
The KiCad project lives in the 22060/2025 repository on GitHub; these links point at the commit this page was built from.
- Layoutkicad/ESC_v1/ESC_v1.kicad_pcb
- Schematickicad/ESC_v1/ESC_v1.kicad_sch
ESC v1: common questions
What microcontroller does the ESC v1 use?
The ESC v1 is built around the STM32G431CBUx, from the STM32 family.
How big is the ESC v1 PCB?
The ESC v1 measures 49.5 × 49.5 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the ESC v1?
117 components, from 25 distinct parts. The full bill of materials is listed on this page.
Where can I download the ESC v1 design files?
From the 22060/2025 repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the ESC v1 design in my own project?
The repository has no license, so all rights stay with 22060. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the ESC v1 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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