4 layers69 × 75 mm Main pcb, the printed circuit board in 3D

Main pcb

A handheld game console.

Size: 69 × 75 mm
Copper layers: 4
Thickness: 1.6 mm
Parts: 70
Nets: 80
Pads: 292
Tracks, vias: 582, 140
Pours: 4
Routed: Yes
KiCad: KiCad 5 (file 20171130)
Created: 5 Jan 2025
Updated: 27 Nov 2025

Overview

Main pcb is an open-source printed circuit board by jlassahn, from the jlassahn/gamesquirrel repository on GitHub. It is a 4-layer board of 69 × 75 mm with 70 parts on 80 nets, routed with 582 tracks and 140 vias.

It is built around the STM32H523CET6, BQ21040DBV and LL3301BF065QJ, with the 151031SS06000, ASE-16.000MHZ-LC-T and CM315D32768HZFT among its other parts. Its parts include 20 capacitors, 20 resistors, 6 connectors, 6 switches and 5 ICs. It belongs with the STM32 boards of this library.

Main components

README

README.md

gamesquirrel

A handheld game console.

Parts

Qty	Value	Footprint	References
11	0.1u	Capacitor_SMD:C_0603_1608Metric	C1, C2, C3, C7, C9, C10, C12, C13, C14, C16, C17
6	10K 1%	Resistor_SMD:R_0603_1608Metric	R4, R11, R12, R13, R14, R17
5	10u	Capacitor_SMD:C_0805_2012Metric	C11, C15, C18, C19, C20
4	10K	Resistor_SMD:R_0603_1608Metric	R2, R7, R8, R19
4	LL3301BF065QJ	main_pcb:LL3301-J	SW1, SW2, SW3, SW4
4	TestPoint_Small	TestPoint:TestPoint_Pad_D1.5mm	TP1, TP2, TP3, TP4
3	1K 1%	Resistor_SMD:R_0603_1608Metric	R1, R15, R16
3	500	Resistor_SMD:R_0603_1608Metric	R3, R9, R10
2	18pF	Capacitor_SMD:C_0603_1608Metric	C4, C5
2	2.2u	Capacitor_SMD:C_0603_1608Metric	C6, C8
2	5.1K	Resistor_SMD:R_0603_1608Metric	R5, R6
2	BLM18RK121SN1D	Resistor_SMD:R_0603_1608Metric	FB1, FB2
1	IS67WVS4M8BLL-104NLA1	Package_SO:SOIC-8_3.9x4.9mm_P1.27mm	U4
1	1 Ohm 1%	Resistor_SMD:R_0603_1608Metric	R20
1	151031SS06000	LED_THT:LED_D3.0mm	D1
1	180 1%	Resistor_SMD:R_0603_1608Metric	R18
1	500mAH	Connector_PinHeader_1.27mm:PinHeader_1x02_P1.27mm_Vertical	BT1
1	ASE-16.000MHZ	Oscillator:Oscillator_SMD_Abracon_ASE-4Pin_3.2x2.5mm	X1
1	BQ21040	Package_TO_SOT_SMD:TSOT-23-6	U1
1	Boot	Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical	J1
1	CK-JS102011SAQN	Button_Switch_SMD:SW_SPDT_CK-JS102011SAQN	SW5
1	CM315D32768HZFT	Crystal:Crystal_SMD_3215-2Pin_3.2x1.5mm	Y1
1	Debug	Connector_PinSocket_2.54mm:PinSocket_1x06_P2.54mm_Vertical	J2
1	LTL-1BEHJ	LED_THT:LED_D3.0mm-3	D3
1	MCP1824T-3302E/OT	Package_TO_SOT_SMD:TSOT-23-5	U3
1	MCP6009T-E/ST	Package_SO:TSSOP-14_4.4x5mm_P0.65mm	U5
1	SD-4-B	main_pcb:SD-4-B	J4
1	SFV20R-2ST	main_pcb:FPC_1x20_P0.5mm_top	J6
1	SSM3K376R	Package_TO_SOT_SMD:SOT-23	Q1
1	STM32H523CET	Package_QFP:LQFP-48_7x7mm_P0.5mm	U2
1	STX-3500-3NTR	Connector_Audio:Jack_3.5mm_CUI_SJ-3523-SMT_Horizontal	J5
1	THB001P	main_pcb:THB001P	SW6
1	TS4148	Diode_SMD:D_0603_1608Metric	D2
1	USB4110	main_pcb:USB4110	J3

Questions

How big is the Main pcb PCB?

It measures 69 × 75 mm and has 4 copper layers, 1.6 mm thick.

What parts does the Main pcb use?

70 parts, built around the STM32H523CET6, BQ21040DBV, LL3301BF065QJ and 151031SS06000. 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 Main pcb KiCad files?

From the jlassahn/gamesquirrel repository on GitHub, at the commit this page was made from: the board is hardware/main_pcb/main_pcb.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the Main pcb design in my own project?

Its repository states no licence, so its author keeps all rights: ask jlassahn before reusing the design.

Category and platform

STM32

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/jlassahn-gamesquirrel" title="Main pcb 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/jlassahn-gamesquirrel.jpg" alt="Main pcb" width="1200" height="900">

A picture that opens the board, for a README

[![Main pcb](https://pcbkit.io/embed/boards/jlassahn-gamesquirrel.jpg?size=s)](https://pcbkit.io/boards/jlassahn-gamesquirrel)

Source

Repository: jlassahn/gamesquirrel
Board file: hardware/main_pcb/main_pcb.kicad_pcb
Commit: 123f5fb
Licence: Not stated

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