Control board
About the Control board
Control board is an open source ESP32 PCB design by Potato-eater, published on GitHub. It is a 2-layer board measuring 120 × 120 mm, with 52 components from 26 distinct parts.
Its main chip is the ESP32-S2-MINI-2, from the ESP32 family. Other key parts include the AMS1117. By type, the board carries 16 LEDs, 11 capacitors, 7 switches, 6 connectors, 6 diodes and 3 resistors.
From the project
github repo for Robocup Junior Australia lightweight soccer team
poster for state competition: https://canva.link/pb0ula68jbszzvj
All programs are annotated within their own files.
Main components on the Control board
Control board bill of materials (BOM)
52 components, 26 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | ESP32-S2-MINI-2 | ESP32-S2-MINI-2 | U1 |
| 1 | AMS1117 | SOT-223-3_TabPin2 | U2 |
| 1 | UART | JST_XH_B2B-XH-A_1x02_P2.50mm_Vertical | J2 |
| 1 | IDC Comm. | IDC-Header_2x05_P2.54mm_Vertical | J3 |
| 1 | BNO Left | PinSocket_1x06_P2.54mm_Vertical | J4 |
| 1 | BNO Right | PinSocket_1x04_P2.54mm_Vertical | J5 |
| 1 | OLED | PinSocket_1x04_P2.54mm_Vertical | J6 |
| 1 | RST | PinHeader_1x01_P2.54mm_Vertical | J22 |
| 1 | C221897 RESET | SW-SMD_4P_PTS810SJM250SMTRLFS | SW1 |
| 1 | C221897 BOOT | SW-SMD_4P_PTS810SJM250SMTRLFS | SW2 |
| 1 | BTN_1 | SW-TH_4P-L6.0-W6.0-P4.50-LS6.3 | SW3 |
| 1 | BTN_2 | SW-TH_4P-L6.0-W6.0-P4.50-LS6.3 | SW4 |
| 1 | BTN_3 | SW-TH_4P-L6.0-W6.0-P4.50-LS6.3 | SW5 |
| 1 | BTN_4 | SW-TH_4P-L6.0-W6.0-P4.50-LS6.3 | SW6 |
| 1 | BTN_5 | SW-TH_4P-L6.0-W6.0-P4.50-LS6.3 | SW7 |
| 1 | C10418 micro USBFemale | MICRO-USB-SMD_5P-P0.65-H-F_C10418 | USB1 |
| 16 | TSSP94038 | TSSP94038 | LED1, LED2, LED3, LED4, LED5, LED6, LED7, LED8 +8 |
| 1 | POWER LED | LED_0603_1608Metric | D1 |
| 1 | EXT LED | LED_0603_1608Metric | D2 |
| 3 | LESD5D5.0CT1G | SOD-523_L1.2-W0.8-LS1.6-BI | D3, D4, D5 |
Show 6 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 1N5819HW-7-F | SOD-123_L2.7-W1.6-LS3.7-RD | D6 |
| 8 | 0.1UF 0.1uF | C_0402_1005Metric | C1, C2, C4, C5, C6, C8, C10, C11 |
| 3 | 10UF 10uF | C_0603_1608Metric | C3, C7, C9 |
| 1 | 10K | R_0603_1608Metric | R3 |
| 1 | 43R | R_0603_1608Metric | R4 |
| 1 | 82R | R_0603_1608Metric | R5 |
Control board design files
The KiCad project lives in the Potato-eater/Legacy2026 repository on GitHub; these links point at the commit this page was built from.
Control board: common questions
What microcontroller does the Control board use?
The Control board is built around the ESP32-S2-MINI-2, from the ESP32 family.
How big is the Control board?
The Control board measures 120 × 120 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Control board?
52 components, from 26 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the Control board design files?
From the Potato-eater/Legacy2026 repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the Control board design in my own project?
The repository has no license, so all rights stay with Potato-eater. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Control board without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.
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