Lego gameboy main
greigs·OpenBrickGB·Main PCB/lego_gameboy_main.kicad_pcb
About the Lego gameboy main PCB
Lego gameboy main is an open source ESP32 PCB design by greigs, published on GitHub. It is a 4-layer board measuring 50.9 × 63.2 mm, with 45 components from 28 distinct parts.
Its main chip is the ESP32-S3-WROOM-1-N16R8, from the ESP32 family. Other key parts include the BQ24040DSQR, TLV75801PDRV, ESD7104MUTAG, MAX98357A and DISP_LCD_240X320_50PIN-2.4IN. By type, the board carries 17 resistors, 11 capacitors, 5 ICs, 5 connectors, 4 switches and 2 diodes.
It belongs with the retro computing and power & battery designs in this gallery.
From the project
Functional / Playable Lego Game Boy Electronics - PCB Design Files
For more info visit the hackaday writeup
- 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.…

Main components on the Lego gameboy main
Lego gameboy main bill of materials (BOM)
45 components, 28 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | BQ24040DSQR | SON40P200X200X80-11N | U1 |
| 1 | TLV75801PDRV | WSON-6-1EP_2x2mm_P0.65mm_EP1x1.6mm | U2 |
| 1 | ESD7104MUTAG | UDFN10_ONS | U3 |
| 1 | MAX98357A | TQFN-16-1EP_3x3mm_P0.5mm_EP1.23x1.23mm | U4 |
| 1 | DISP_LCD_240X320_50PIN-2.4IN | TFT_2.4IN_240X320_50PIN | U$10 |
| 1 | ESP32-S3-WROOM-1-N16R8 | ESP32S3WROOM1N8R2 | X1 |
| 1 | USB_C_Receptacle_USB2.0_16P | USB_C_Receptacle_G-Switch_GT-USB-7025 | J1 |
| 1 | Conn_01x08_Socket | JST_SUR_BM08B-SURS-TF_1x08-1MP_P0.80mm_Vertical | J2 |
| 1 | B2B-PH-K-S | JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | J3 |
| 1 | 503398-1892 | MOLEX_503398-1892 | J4 |
| 1 | Conn_01x03_Socket | JST_SUR_BM03B-SURS-TF_1x03-1MP_P0.80mm_Vertical | J6 |
| 1 | POWER_SW | 450404015514 | S1 |
| 1 | BOOT | SW_TS-1088-AR02016 | SW1 |
| 1 | ~ G-Switch(品赞) | SW-SMD_GT-TC185B-H038-L1 | SW2 |
| 1 | RESET | SW_TS-1088-AR02016 | SW3 |
| 1 | LED-RED | LED_0603_1608Metric | D1 |
| 1 | LED-GRN | LED_0603_1608Metric | D2 |
| 5 | 1uF | C_0603_1608Metric | C1, C2, C3, C5, C10 |
| 2 | 10uF | C_0603_1608Metric | C4, C7 |
| 2 | 0.1uF | C_0603_1608Metric | C6, C11 |
Show 8 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 2 | 0.1nF | C_0603_1608Metric | C8, C9 |
| 10 | 10k | R_0603_1608Metric | R1, R5, R9, R10, R11, R12, R13, R14 +2 |
| 1 | 1M | R_0603_1608Metric | R2 |
| 1 | 200k | R_0603_1608Metric | R3 |
| 1 | 5k | R_0603_1608Metric | R4 |
| 2 | 1.5k | R_0603_1608Metric | R6, R7 |
| 1 | 10 | R_0603_1608Metric | R8 |
| 1 | 100k | R_0603_1608Metric | R17 |
Lego gameboy main design files
The KiCad project lives in the greigs/OpenBrickGB repository on GitHub; these links point at the commit this page was built from.
Lego gameboy main: common questions
What microcontroller does the Lego gameboy main use?
The Lego gameboy main is built around the ESP32-S3-WROOM-1-N16R8, from the ESP32 family.
How big is the Lego gameboy main PCB?
The Lego gameboy main measures 50.9 × 63.2 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the Lego gameboy main?
45 components, from 28 distinct parts. The full bill of materials is listed on this page.
Where can I download the Lego gameboy main design files?
From the greigs/OpenBrickGB repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Lego gameboy main design in my own project?
The repository has no license, so all rights stay with greigs. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Lego gameboy main 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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