4 layers100 × 90 mm Before maze, the printed circuit board in 3D

Before maze

KiCad PCB design project

Size: 100 × 90 mm
Copper layers: 4
Thickness: 1.6 mm
Parts: 141
Nets: 94
Pads: 564
Tracks, vias: 959, 322
Pours: 34
Routed: Yes
KiCad: KiCad 10.0 (file 20260206)
Created: 27 Sep 2026
Updated: 9 Oct 2026

Overview

Before maze is an open-source printed circuit board by odtu, from the odtu/PCBDesignWClaude repository on GitHub, published under the CERN-OHL-S-2.0 licence. It is a 4-layer board of 100 × 90 mm with 141 parts on 94 nets, routed with 959 tracks and 322 vias.

It is built around the ESP32-WROOM-32E, SN65HVD230DR and LM74700QDBVRQ1, with the PTPS16890VMAR, NTMFS006N08MC and CDSOD323-T24SC among its other parts. Its parts include 44 capacitors, 33 resistors, 8 ICs, 8 connectors and 7 transistors. It belongs with the ESP32 boards of this library.

Main components

README

README.md

PCBDesignWClaude — 3-Phase BLDC ESC (ESP32-WROOM-32E)

KiCad project for a 3-phase brushless motor ESC.

MCU: ESP32-WROOM-32E, soldered SMD directly onto the PCB (no plug-in module)
Input: 12–36V DC
Target continuous phase current: ~5–10A
Control/telemetry: UART + CAN bus
Design follows METU PowerLab PCB design rules and uses parts exclusively from PowerLabKiCadLibraries.

Status

GitHub repo created
ESP32-WROOM-32E added to PowerLabKiCadLibraries (odtu/PowerLabKiCadLibraries#2, merged)
Library additions + fixes (power symbols, mounting holes, fiducials, test pads, net ties, ESP32 footprint fix): odtu/PowerLabKiCadLibraries#3 (merged)
Schematic Rev B: full rebuild per the PowerLab rules; kicad-cli ERC 0 errors, netlist verified (see hardware/ARCHITECTURE.md)
Library fixes found during layout (exposed pads, mask margins, logo/QR graphics, ESP32 3D model): odtu/PowerLabKiCadLibraries#5 (merged)
PCB Rev B: 4 layers, 100 × 90 mm; kicad-cli DRC 0 errors / 0 unconnected / 0 parity (see hardware/ARCHITECTURE.md)
Fab outputs: Gerber + drill zip, BOM, position file, assembly drawings in hardware/fab

PCB top

Layout

hardware/ — KiCad project

Parts

141

Qty	Value	Footprint	References
16	10 kOhm	METUPowerLab_Resistors_ChipResistors:0603_Medium	R1, R2, R13, R14, R15, R16, R40, R41, R42, R43, R44, R45, R46, R47, R48, R49
10	100 nF	METUPowerLab_Capacitors_Ceramics_SurfaceMounts:0603_Medium	C2, C14, C18, C22, C25, C27, C30, C45, C58, C60
8	NetTie_2_0.5mm	METUPowerLab_NetTies_SurfaceMounts:NetTie_2_0.5mm	NT1, NT2, NT3, NT4, NT5, NT6, NT7, NT8
7	100 nF 100V	METUPowerLab_Capacitors_Ceramics_SurfaceMounts:0603_Medium	C10, C13, C21, C40, C51, C53, C55
7	NTMFS006N08MC	METUPowerLab_Transistors_MOSFETs:8-PowerTDFN(5x6mm)	Q1, Q2, Q3, Q4, Q5, Q6, Q7
6	220 pF	METUPowerLab_Capacitors_Ceramics_SurfaceMounts:0603_Medium	C4, C5, C6, C7, C8, C15
5	10 µF 100V	METUPowerLab_Capacitors_Ceramics_SurfaceMounts:1206_Medium	C19, C41, C50, C52, C54
4	M3_NPTH	METUPowerLab_Mechanicals_MountingHoles:M3_NPTH	H1, H2, H3, H4
3	2 mOhm	METUPowerLab_Resistors_ShuntResistors:2512	R50, R51, R52
3	Fiducial_1mm_Mask2mm	METUPowerLab_Mechanicals_Fiducials:Fiducial_1mm_Mask2mm	FID1, FID2, FID3
3	PHASE	METUPowerLab_Connectors_ScrewTerminals:7770	J5, J6, J7
2	1 kOhm	METUPowerLab_Resistors_ChipResistors:0603_Medium	R3, R24
2	1 µF	METUPowerLab_Capacitors_Ceramics_SurfaceMounts:0603_Medium	C3, C44
2	100 µF 63V	METUPowerLab_Capacitors_AluminumPolymers_ThroughHoles:8.00x13.50mm	C56, C57
2	4.7 µF 100V	METUPowerLab_Capacitors_Ceramics_SurfaceMounts:1210_Medium	C12, C20
2	47 µF	METUPowerLab_Capacitors_Ceramics_SurfaceMounts:1210_Medium	C23, C24
2	56 Ohm	METUPowerLab_Resistors_ChipResistors:0603_Medium	R60, R61
2	CDSOD323-T24SC	METUPowerLab_Diodes_TVSDiodes:SOD-323	D60, D61
2	GND	METUPowerLab_TestPoints_SurfaceMounts:Pad_D1.5mm	TP23, TP51
2	Green	METUPowerLab_LEDs_SurfaceMounts:0603_Medium	D1, D20
1	+3V3_A	METUPowerLab_TestPoints_SurfaceMounts:Pad_D1.5mm	TP21
1	+3V3_MCU	METUPowerLab_TestPoints_SurfaceMounts:Pad_D1.5mm	TP20
1	+VBUS	METUPowerLab_TestPoints_SurfaceMounts:Pad_D1.5mm	TP11
1	+VBUS_EFUSE	METUPowerLab_TestPoints_SurfaceMounts:Pad_D1.5mm	TP12
1	+VBUS_PROT	METUPowerLab_TestPoints_SurfaceMounts:Pad_D1.5mm	TP50
1	1 nF	METUPowerLab_Capacitors_Ceramics_SurfaceMounts:0603_Medium	C17
1	1 µF 100V	METUPowerLab_Capacitors_Ceramics_SurfaceMounts:0603_Medium	C42
1	1.33 kOhm	METUPowerLab_Resistors_ChipResistors:0603_Medium	R18
1	10 µF	METUPowerLab_Capacitors_Ceramics_SurfaceMounts:0603_Medium	C26
1	100 kOhm	METUPowerLab_Resistors_ChipResistors:0603_Medium	R23
1	100 nF 16V	METUPowerLab_Capacitors_Ceramics_SurfaceMounts:0603_Medium	C11
1	110 kOhm	METUPowerLab_Resistors_ChipResistors:0603_Medium	R21
1	118 kOhm	METUPowerLab_Resistors_ChipResistors:0603_Medium	R12
1	120 Ohm	METUPowerLab_Resistors_ChipResistors:0603_Medium	R10
1	22 pF	METUPowerLab_Capacitors_Ceramics_SurfaceMounts:0603_Medium	C16
1	22 µF	METUPowerLab_Capacitors_Ceramics_SurfaceMounts:0603_Medium	C1
1	3.65 kOhm	METUPowerLab_Resistors_ChipResistors:0603_Medium	R17
1	4.7 nF	METUPowerLab_Capacitors_Ceramics_SurfaceMounts:0603_Medium	C61
1	4.7µH	METUPowerLab_Inductors_SurfaceMounts:6x5_7mm	L1
1	47 kOhm	METUPowerLab_Resistors_ChipResistors:0603_Medium	R22
1	47 nF 100V	METUPowerLab_Capacitors_Ceramics_SurfaceMounts:0603_Medium	C43
1	5 mOhm	METUPowerLab_Resistors_ShuntResistors:2010	R30
1	54.9 kOhm	METUPowerLab_Resistors_ChipResistors:0603_Medium	R20
1	866 kOhm	METUPowerLab_Resistors_ChipResistors:0603_Medium	R11
1	BLM18EG221SN1D	METUPowerLab_CircuitProtections_FerriteBeads:0603_Medium	FB1
1	BOOT	METUPowerLab_Switches_TactileSwitches:TL6330AF200Q	SW2
1	BOOT	METUPowerLab_TestPoints_SurfaceMounts:Pad_D1.5mm	TP2
1	BUCK_PG	METUPowerLab_TestPoints_SurfaceMounts:Pad_D1.5mm	TP22
1	CAN	METUPowerLab_Connectors_SignalConnectors:384471-E	J8
1	CANH	METUPowerLab_TestPoints_SurfaceMounts:Pad_D1.5mm	TP60
1	CANL	METUPowerLab_TestPoints_SurfaceMounts:Pad_D1.5mm	TP61
1	DRV8323RSRGZT	METUPowerLab_MotorDrivers_BLDC:48-VQFN	U6
1	EFUSE_PGOOD	METUPowerLab_TestPoints_SurfaceMounts:Pad_D1.5mm	TP13
1	EN	METUPowerLab_TestPoints_SurfaceMounts:Pad_D1.5mm	TP1
1	ESP32-WROOM-32E	METUPowerLab_Microcontrollers_ESP32:ESP32-WROOM-32E	U1
1	EXPANSION	METUPowerLab_Connectors_SignalConnectors:384471-E	J2
1	GND	METUPowerLab_Connectors_ScrewTerminals:7770	J4
1	INA240A1DR	METUPowerLab_Amplifiers_CurrentSenses:8-SOIC	U9
1	LM74700QDBVRQ1	METUPowerLab_CircuitProtections_IdealDiodes:SOT-23-6_DBV	U2
1	LMR38020FSDDAR	METUPowerLab_Regulators_BuckConverters:8-SOICPower	U4
1	METUPowerLab_Logo_30mm	METUPowerLab_Graphics:METUPowerLab_Logo_30mm	LOGO1
1	METUPowerLab_QRCode_13.3mm	METUPowerLab_Graphics:METUPowerLab_QRCode_13.3mm	QR1
1	PTPS16890VMAR	METUPowerLab_CircuitProtections_eFuses:23-LQFN-CLIP_(VMA)	U3
1	RESET	METUPowerLab_Switches_TactileSwitches:TL6330AF200Q	SW1
1	SMBJ36CA-13-F	METUPowerLab_Diodes_TVSDiodes:DO-214AA	D10
1	SN65HVD230DR	METUPowerLab_Interfaces_CANBusBridges:8-SOIC	U10
1	SPI_SCLK	METUPowerLab_TestPoints_SurfaceMounts:Pad_D1.5mm	TP3
1	TMP235A4DCKR	METUPowerLab_Sensors_Temperature:SC-70-5	U8
1	UART	METUPowerLab_Connectors_SignalConnectors:2147210040	J1
1	VIN+	METUPowerLab_Connectors_ScrewTerminals:7770	J3
1	VIN_RAW	METUPowerLab_TestPoints_SurfaceMounts:Pad_D1.5mm	TP10

Questions

How big is the Before maze PCB?

It measures 100 × 90 mm and has 4 copper layers, 1.6 mm thick.

What parts does the Before maze use?

141 parts, built around the ESP32-WROOM-32E, SN65HVD230DR, LM74700QDBVRQ1 and PTPS16890VMAR. 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 Before maze KiCad files?

From the odtu/PCBDesignWClaude repository on GitHub, at the commit this page was made from: the board is wip_pcb_revB/route/before_maze.kicad_pcb and its schematic hardware/Communication.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Before maze design in my own project?

Its repository publishes it under the CERN-OHL-S-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

Category and platform

ESP32

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/odtu-pcbdesignwclaude" title="Before maze 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/odtu-pcbdesignwclaude.jpg" alt="Before maze" width="1200" height="900">

A picture that opens the board, for a README

[![Before maze](https://pcbkit.io/embed/boards/odtu-pcbdesignwclaude.jpg?size=s)](https://pcbkit.io/boards/odtu-pcbdesignwclaude)

Source

Repository: odtu/PCBDesignWClaude
Board file: wip_pcb_revB/route/before_maze.kicad_pcb
Commit: 7e18d19
Licence: CERN-OHL-S-2.0
Copies: 7 copies in 1 repository

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