2 layers81.5 × 81.5 mm
Kicker
class-ab/open-soccer
Mindstormers' open soccer repo. contains code, pcbs, elec, diagrams, etc...
39 parts2
4 layers
Soccer bottom
class-ab/open-soccer2Mindstormers' open soccer repo. contains code, pcbs, elec, diagrams, etc...
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 76
- Nets
- 65
- Pads
- 231
- Tracks, vias
- 730, 156
- Pours
- 22
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 19 Feb 2026
- Updated
- 4 Oct 2026
Overview
Soccer bottom is an open-source printed circuit board by class-ab, from the class-ab/open-soccer repository on GitHub. It is a 4-layer board with 76 parts on 65 nets, routed with 730 tracks and 156 vias.
It is built around the QRE1113GR, AMS1117-3.3 and CD74HC4067SM96, with the RP2040-ZERO and AO3400A among its other parts. Its parts include 43 resistors, 19 ICs, 5 capacitors, 4 transistors and 1 connector. It belongs with the RP2040 boards of this library.
Main components
5
QRE1113GR
SMD-4P1mm 20mA SMD-4P Reflective Optical Interrupters ROHSonsemiReflective Optical Interrupters
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
CD74HC4067SM96
SSOP-24-208mil-55℃~+125℃ 15ns 16 16:1 2V~6V 5pF 70Ω 89MHz SSOP-24-208mil Analog Switches, Multiplexers ROHSTexas InstrumentsAnalog Switches, Multiplexers
RP2040-ZERO
-- Development Boards & Kits ROHSWaveshareDevelopment Boards & Kits
AO3400A
SOT-23-55℃~+150℃ 1 N-channel 1.45V 1.4W 30V 48mΩ@2.5V 5.7A 50pF 630pF 75pF 7nC@10V N-Channel SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
README
README.mdcontains all the PCBs, code and general shared documentation used in the creation of Mindstormers' open soccer robot/s (2026+)
Parts
76| Qty | Value | Footprint | References |
|---|---|---|---|
| 21 | 10k | Resistor_SMD:R_0805_2012Metric | R1, R3, R11, R13, R15, R17, R19, R21, R23, R25, R27, R29, R31, R33, R34, R35 +5 |
| 20 | 100 | Resistor_SMD:R_0805_2012Metric | R2, R4, R10, R12, R14, R16, R18, R20, R22, R24, R26, R28, R30, R32, R38, R39 +4 |
| 16 | QRE1113GR | OptoDevice:OnSemi_CASE100CY | U2, U3, U4, U5, U6, U7, U8, U9, U10, U11, U12, U13, U14, U15, U16, U17 |
| 4 | AO3400A | Package_TO_SOT_SMD:SOT-23 | Q1, Q2, Q3, Q4 |
| 3 | 100n | Capacitor_SMD:C_0805_2012Metric | C1, C2, C4 |
| 2 | 10u | Capacitor_SMD:C_0805_2012Metric | C3, C5 |
| 2 | 3.3k | Resistor_SMD:R_0805_2012Metric | R42, R43 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U19 |
| 1 | CD74HC4067SM | Package_SO:SSOP-24_5.3x8.2mm_P0.65mm | U1 |
| 1 | Conn_01x04_Socket | Connector_JST:JST_XH_B4B-XH-A_1x04_P2.50mm_Vertical | J1 |
| 1 | RP2040-ZERO | Footprints:MODULE_RP2040-ZERO | U18 |
The 72 most common of 76 parts.
More from class-ab/open-soccer
2- 4 layers95.1 × 95.1 mm
Middle
class-ab/open-soccer
Mindstormers' open soccer repo. contains code, pcbs, elec, diagrams, etc...
30 parts2
Similar boards
- 4 layers99.6 × 98.3 mm
- 2 layers75.3 × 18.5 mm
- 4 layers100 × 100 mm
Amod m
gallicchio/AMOD-and-RFMOD
The tutorial's 2x12 adapter (/mudd/133electronics/icepi-zero-dac-adc/adapterboard/) with a 2 x 6 right-angle Pmod socket on a 15 mm extension of its right-hand end, so an Icepi Zero can drive AMOD-A's and RF-MOD's Pmod…
207 parts - 4 layers100.9 × 100 mm
- 2 layers100.1 × 101.9 mm
MISA ESP32 V2
AgustinPrietoValdez/competition-robots
Custom competition robots — maze/micromouse (MISA), sumo (TATAMI 1) & mini-sumo (RUCHO). KiCad PCBs, STM32/Arduino firmware, Fusion 360. National champion & international prizes — by EDNAROBOTICS.
61 partsMIT - 2 layers70.7 × 88.5 mm
- 4 layers65 × 100 mm
Macropad
mcskny/wireless-he-macropad
A wireless, 12-key Hall-effect macropad built around a custom PCB, an ESP32-C6 sender, an ESP32-S3 USB receiver, and a native macOS companion app.
165 partsGPL-3.0 - 2 layers309.6 × 95.3 mm
Macrolev
heiso/macrolev
Macrolev is an open source analog keyboard powered by Hall Effect switches
184 parts136
Questions
What parts does the Soccer bottom use?
76 parts, built around the QRE1113GR, AMS1117-3.3, CD74HC4067SM96 and RP2040-ZERO. 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 Soccer bottom KiCad files?
From the class-ab/open-soccer repository on GitHub, at the commit this page was made from: the board is PCBs/bottom/soccer bottom.kicad_pcb and its schematic PCBs/bottom/soccer bottom.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Soccer bottom design in my own project?
Its repository states no licence, so its author keeps all rights: ask class-ab before reusing the design.