2 layers62.5 × 53.4 mm
Lego gameboy buttonboards
greigs/OpenBrickGB
Functional / Playable Lego Game Boy Electronics - PCB Design Files
22 parts15
4 layers50.9 × 63.2 mm
Lego gameboy main
greigs/OpenBrickGB15Functional / Playable Lego Game Boy Electronics - PCB Design Files
- Size
- 50.9 × 63.2 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 56
- Nets
- 103
- Pads
- 297
- Tracks, vias
- 1,364, 273
- Pours
- 4
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 12 Oct 2025
- Updated
- 11 Aug 2026
Overview
Lego gameboy main is an open-source printed circuit board by greigs, from the greigs/OpenBrickGB repository on GitHub. It is a 4-layer board of 50.9 × 63.2 mm with 56 parts on 103 nets, routed with 1,364 tracks and 273 vias.
It is built around the ESP32-S3-WROOM-1-N16R8, BQ24040DSQR and ESD7104MUTAG, with the TLV75801PDRV and B2B-PH-K-S among its other parts. Its parts include 17 resistors, 11 capacitors, 5 connectors, 4 ICs and 4 switches. It belongs with the retro computing and games boards and the ESP32 boards of this library.
Main components
5
ESP32-S3-WROOM-1-N16R8
SMD,25.5x18mm-103.5dBm -40℃~+65℃ 2.4GHz 20.5dBm 355mA 3V~3.6V 95mA ESP32-S3R8 On-board PCB Antenna UART、SPI、I2C、GPIO、I2S、USB SMD,25.5x18mm WiFi Modules ROHSEspressif SystemsWiFi Modules
BQ24040DSQR
WSON-10-EP(2x2)0℃~+125℃ 1 1A 1mA 3.5V~28V 4.2V 800mV Charging IC Lithium Battery Support Support WSON-10-EP(2x2) Battery Management ROHSTexas InstrumentsBattery Management
ESD7104MUTAG
DFN2510-10-55℃~+125℃ 0.2pF、0.4pF 18V 200nA 3A@8/20us 5V 60W@8/20us 7.5V Four channels IEC 61000-4-2、IEC 61000-4-5 DFN2510-10 ESD and Surge Protection (TVS/ESD) ROHSTECH PUBLICESD And Surge Protection (TVS/ESD)
TLV75801PDRV
WSON-6-EP(2x2)-40℃~+125℃@(Tj) 1 31uA 500mA 50dB@(1kHz) 53uVrms 550mV~5.5V 6V Adjustable Positive Under Voltage Lockout、Over Current Protection、Soft Start、Thermal Shutdown WSON-6-EP(2x2) Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
B2B-PH-K-S
插件,P=2mmUncategorisedJST
README
README.mdFor more info visit the hackaday writeup
Directory overview
- 3D Printed Parts: STL files for custom spacers and assemblies used inside the LEGO shell.
- Bill of Materials: CSVs listing components for the main PCB, button PCBs, and other parts.
- ButtonBoard PCBs: KiCad project assets and Gerbers for the button and D‑pad PCBs.
- Datasheets: Reference PDFs for key components (LCD, charger, amp, logic, regulators, etc.).
- Main PCB: KiCad project, fabrication outputs (Gerbers/DRLs), and pick‑and‑place (CPL) for the main board.
- Reference 3D Models: OBJ files used for fit checks and visualization of assemblies.
- Reference Bricklink Studio Designs: BrickLink Studio
.iodesign files and a reference image for the LEGO build.
Parts
56| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 10k | Resistor_SMD:R_0603_1608Metric | R1, R5, R9, R10, R11, R12, R13, R14, R15, R16 |
| 5 | 1uF | Capacitor_SMD:C_0603_1608Metric | C1, C2, C3, C5, C10 |
| 2 | 0.1nF | Capacitor_SMD:C_0603_1608Metric | C8, C9 |
| 2 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C6, C11 |
| 2 | 1.5k | Resistor_SMD:R_0603_1608Metric | R6, R7 |
| 2 | 10uF | Capacitor_SMD:C_0603_1608Metric | C4, C7 |
| 1 | 10 | Resistor_SMD:R_0603_1608Metric | R8 |
| 1 | 100k | Resistor_SMD:R_0603_1608Metric | R17 |
| 1 | 1M | Resistor_SMD:R_0603_1608Metric | R2 |
| 1 | 200k | Resistor_SMD:R_0603_1608Metric | R3 |
| 1 | 503398-1892 | MOLEX_503398-1892:MOLEX_503398-1892 | J4 |
| 1 | 5k | Resistor_SMD:R_0603_1608Metric | R4 |
| 1 | B2B-PH-K-S | Connector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | J3 |
| 1 | BOOT | TS-1088-AR02016:SW_TS-1088-AR02016 | SW1 |
| 1 | BQ24040DSQR | BQ24040DSQR:SON40P200X200X80-11N | U1 |
| 1 | BTN_A | TestPoint:TestPoint_Pad_D1.0mm | TP8 |
| 1 | BTN_B | TestPoint:TestPoint_Pad_D1.0mm | TP9 |
| 1 | BTN_GND | TestPoint:TestPoint_Pad_D1.0mm | TP10 |
| 1 | BTN_SELECT | TestPoint:TestPoint_Pad_D1.0mm | TP6 |
| 1 | BTN_START | TestPoint:TestPoint_Pad_D1.0mm | TP7 |
| 1 | Conn_01x03_Socket | Connector_JST:JST_SUR_BM03B-SURS-TF_1x03-1MP_P0.80mm_Vertical | J6 |
| 1 | Conn_01x08_Socket | Connector_JST:JST_SUR_BM08B-SURS-TF_1x08-1MP_P0.80mm_Vertical | J2 |
| 1 | DISP_LCD_240X320_50PIN-2.4IN | Adafruit 2.4in TFT Breakout:TFT_2.4IN_240X320_50PIN | U$10 |
| 1 | DPAD_3V3 | TestPoint:TestPoint_Pad_D1.0mm | TP1 |
| 1 | DPAD_DOWN | TestPoint:TestPoint_Pad_D1.0mm | TP5 |
| 1 | DPAD_LEFT | TestPoint:TestPoint_Pad_D1.0mm | TP3 |
| 1 | DPAD_RIGHT | TestPoint:TestPoint_Pad_D1.0mm | TP2 |
| 1 | DPAD_UP | TestPoint:TestPoint_Pad_D1.0mm | TP4 |
| 1 | ESD7104MUTAG | footprints:UDFN10_ONS | U3 |
| 1 | ESP32-S3-WROOM-1-N16R8 | ESP32:ESP32S3WROOM1N8R2 | X1 |
| 1 | LED-GRN | LED_SMD:LED_0603_1608Metric | D2 |
| 1 | LED-RED | LED_SMD:LED_0603_1608Metric | D1 |
| 1 | MAX98357A | Package_DFN_QFN:TQFN-16-1EP_3x3mm_P0.5mm_EP1.23x1.23mm | U4 |
| 1 | POWER_SW | 450404015514:450404015514 | S1 |
| 1 | RESET | TS-1088-AR02016:SW_TS-1088-AR02016 | SW3 |
| 1 | Speaker | Buzzer_Beeper:Speaker_CUI_CMR-1206S-67 | LS1 |
| 1 | TLV75801PDRV | Package_SON:WSON-6-1EP_2x2mm_P0.65mm_EP1x1.6mm | U2 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_G-Switch_GT-USB-7025 | J1 |
| 1 | ~ | ProLib_pcs_2025-10-09:SW-SMD_GT-TC185B-H038-L1 | SW2 |
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Questions
How big is the Lego gameboy main PCB?
It measures 50.9 × 63.2 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Lego gameboy main use?
56 parts, built around the ESP32-S3-WROOM-1-N16R8, BQ24040DSQR, ESD7104MUTAG and TLV75801PDRV. 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 Lego gameboy main KiCad files?
From the greigs/OpenBrickGB repository on GitHub, at the commit this page was made from: the board is Main PCB/lego_gameboy_main.kicad_pcb and its schematic ButtonBoard PCBs/lego-gameboy-buttonboards.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Lego gameboy main design in my own project?
Its repository states no licence, so its author keeps all rights: ask greigs before reusing the design.