2 layers114 × 137.6 mm Power board, the printed circuit board in 3D

Power board

Oxebots electronics design for the RoboCup Soccer Small-Size League

Size: 114 × 137.6 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 37
Nets: 18
Pads: 82
Tracks, vias: 68, 3
Pours: 7
Routed: Yes
KiCad: KiCad 9.0 (file 20241229)
Created: 25 Apr 2025
Updated: 19 Sep 2026

Overview

Power board is an open-source printed circuit board by OxeBots, from the OxeBots/ssl_electronics repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 114 × 137.6 mm with 37 parts on 18 nets, routed with 68 tracks and 3 vias.

It is built around the MR30PW-M, XT30PW-F and 1.5KE30CA, with the XT30PW-M among its other parts. Its parts include 12 connectors, 4 capacitors, 2 resistors, 1 diode and 1 fuse.

Main components

README

README.md

SSL Electronics - Oxebots

Electronics design for the RoboCup Soccer Small-Size League (SSL).

System Architecture

Main Board: ESP32-based controller board.
Power Board: Power distribution and battery protection.
Kicker Board: Board that drives the solenoid through a capacitor bank charged up to 200V.

Repository Structure

/pcbs: KiCad boards project files.
/Libraries: Custom symbols, footprints, and 3D models.
/exported: STEP and 3D exports.
/datasheets: Component documentation.

Core Components

Toolchain: KiCad 9.0+
MCU: ESP32 38-pin
RF: NRF24L01+
Sensors: GY-85 (IMU), AS5600 (motor encoder), VL53L5X (ToF sensor)
Motors: BL48250 motor with driver board (for 24V).
Solenoid: 25X50TL (for 24V)

Configuration

To resolve library dependencies in KiCad, you must configure the OXEBOTS_SSL_LIB_DIR path variable:

Open KiCad.
Go to Preferences > Configure Paths...
Add a new entry (+ symbol):
- Name: OXEBOTS_SSL_LIB_DIR
- Path: Path to the Libraries folder in your local machine.

This ensures all schematic symbols, footprints, and 3D models are correctly linked.

Parts

Qty	Value	Footprint	References
4	100nF	PCM_Capacitor_THT_AKL:C_Disc_D5.0mm_W2.5mm_P5.00mm	C1, C2, C3, C4
3	MR30PW-M	oxebots_connectors:AMASS_MR30PW-M_1x03_P3.50mm_Horizontal	J9, J10, J11
3	MountingHole	MountingHole:MountingHole_3.2mm_M3	H1, H2, H3
3	PinSocket_1x04_P2.54	Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical	J1, J2, J3
2	JST_XH_B3B	Connector_JST:JST_XH_B3B-XH-A_1x03_P2.50mm_Vertical	J4, J5
2	XT30PW-F	oxebots_connectors:AMASS_XT30PW-F	J6, J7
1	1.5KE30CA	PCM_Diode_THT_AKL:D_DO-201_P12.70mm_Horizontal_TVS	D1
1	12V connection	oxebots_connectors:JST_B2B-XH-A	J12
1	220K	PCM_Resistor_THT_AKL:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal	R2
1	30A	oxebots:FUSE_3557-10	F1
1	5.6M	PCM_Resistor_THT_AKL:R_Axial_DIN0204_L3.6mm_D1.6mm_P5.08mm_Horizontal	R1
1	B+	TestPoint:TestPoint_Pad_D2.5mm	TP5
1	B-	Connector_Wire:SolderWirePad_1x01_SMD_5x10mm	TP14
1	B1	TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm	TP13
1	B2	TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm	TP12
1	B3	TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm	TP11
1	B4	TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm	TP10
1	B5	TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm	TP9
1	B6	TestPoint:TestPoint_THTPad_D2.0mm_Drill1.0mm	TP8
1	P-	Connector_Wire:SolderWirePad_1x01_SMD_5x10mm	TP7
1	SW+	TestPoint:TestPoint_Pad_D1.0mm	TP1
1	SW_{NO}	TestPoint:TestPoint_Pad_D1.0mm	TP2
1	V+	TestPoint:TestPoint_Pad_D2.5mm	TP3
1	V-	TestPoint:TestPoint_Pad_D2.5mm	TP6
1	V^{-}_{no}	TestPoint:TestPoint_Pad_D2.5mm	TP4
1	XT30PW-M	oxebots_connectors:AMASS_XT30PW-M	J8

Questions

How big is the Power board PCB?

It measures 114 × 137.6 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Power board use?

37 parts, built around the MR30PW-M, XT30PW-F, 1.5KE30CA and XT30PW-M. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the Power board KiCad files?

From the OxeBots/ssl_electronics repository on GitHub, at the commit this page was made from: the board is pcbs/power/power_board.kicad_pcb and its schematic pcbs/kicker/Kicker_LT3751_OxeBots.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Power board design in my own project?

Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/oxebots-ssl-electronics-power-board" title="Power board in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/oxebots-ssl-electronics-power-board.jpg" alt="Power board" width="1200" height="900">

A picture that opens the board, for a README

[![Power board](https://pcbkit.io/embed/boards/oxebots-ssl-electronics-power-board.jpg?size=s)](https://pcbkit.io/boards/oxebots-ssl-electronics-power-board)

Source

Repository: OxeBots/ssl_electronics
Board file: pcbs/power/power_board.kicad_pcb
Commit: aab1cae
Licence: GPL-3.0

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