2 layers124.5 × 62.5 mm Project 3, the printed circuit board in 3D

Project 3

Design 2-Layer Custom ESP 32 PCB

Size: 124.5 × 62.5 mm
Copper layers: 2
Thickness: 1.6 mm
Parts: 71
Nets: 67
Pads: 303
Tracks, vias: 984, 91
Pours: 1
Routed: Yes
KiCad: KiCad 9.0 (file 20241229)
Created: 14 Apr 2026
Updated: 14 Apr 2026

Overview

Project 3 is an open-source printed circuit board by Shourya-Basu, from the Shourya-Basu/PCB-Design_Custom_ESP32_V1 repository on GitHub. It is a 2-layer board of 124.5 × 62.5 mm with 71 parts on 67 nets, routed with 984 tracks and 91 vias.

It is built around the CH340C, ESP32-WROOM-32D and LM2596S-5.0, with the HDSP-7403 and SM518 among its other parts. Its parts include 21 capacitors, 19 resistors, 19 connectors, 5 diodes and 4 ICs. It belongs with the ESP32 boards of this library.

Main components

README

README.md

Tech Stack

Schematic – The blueprint stage where logical connections between components are defined using symbols, pins, and nets to create a functional electrical map.
PCB Routing – The physical design process of laying down copper tracks (traces) on the board to connect components while adhering to design rules like clearance, trace width, and signal integrity.
KiCad – An open-source EDA suite used for schematic capture and PCB layout, offering powerful tools for 3D visualization and Gerber file generation.

Images

Schematic

PCB

Category and platform

ESP32

Project files

Show this board on your page

https://pcbkit.io/boards/Shourya-Basu/PCB-Design_Custom_ESP32_V1

The board's own page, for a message or a post.

Source

Repository: Shourya-Basu/PCB-Design_Custom_ESP32_V1
Board file: Project 3.kicad_pcb
Commit: e68116b
Licence: Not stated

Parts

Qty	Value	Footprint	References
18	C	Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C4, C5, C6, C7, C10, C11, C12, C13, C14, C15, C16, C17, C18, C19, C20, C21 +2
8	499	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R11, R13, R14, R15, R16, R17, R18, R19
6	10K	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R1, R2, R6, R7, R8, R9
6	Conn_01x04_Pin	Connector:FanPinHeader_1x04_P2.54mm_Vertical	J5, J7, J8, J9, J10, J11
4	Conn_01x08	Connector_Molex:Molex_KK-254_AE-6410-08A_1x08_P2.54mm_Vertical	J13, J14, J15, J16
2	4.7K	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R20, R21
2	C_Polarized	Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder	C1, C22
2	Conn_01x03_Pin	Connector:FanPinHeader_1x03_P2.54mm_Vertical	J6, J18
2	R	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R10, R12
2	RED	LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder	D2, D5
1	10k	Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder	R3
1	C	Capacitor_SMD:C_0805_2012Metric	C3
1	CH340C	Package_SO:SOIC-16_3.9x9.9mm_P1.27mm	U3
1	Conn_01x02	Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical	J17
1	Conn_01x02_Socket	Connector_PinSocket_2.54mm:PinSocket_1x02_P2.54mm_Vertical	J4
1	Conn_01x02_Socket	Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical	J19
1	Conn_01x16	Connector_PinHeader_2.54mm:PinHeader_1x16_P2.54mm_Vertical	J12
1	Crystal_GND24	Crystal:Crystal_SMD_0603-4Pin_6.0x3.5mm	Y1
1	ESP32-WROOM-32D	RF_Module:ESP32-WROOM-32D	U5
1	GREEN	LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder	D4
1	HDSP-7403	Display_7Segment:HDSP-7401	U4
1	Jack-DC	Connector_BarrelJack:BarrelJack_SwitchcraftConxall_RAPC10U_Horizontal	J2
1	L	Inductor_SMD:L_0805_2012Metric_Pad1.05x1.20mm_HandSolder	L1
1	LM2596S-5	Package_TO_SOT_SMD:TO-263-5_TabPin3	U1
1	R_Potentiometer	Potentiometer_THT:Potentiometer_Vishay_148-149_Single_Horizontal	RV1
1	SM518	Diode_SMD:D_0805_2012Metric_Pad1.15x1.40mm_HandSolder	D1
1	Screw_Terminal_01x02	TerminalBlock:TerminalBlock_bornier-2_P5.08mm	J3
1	USB_B_Micro	Connector_USB:USB_Micro-AB_Molex_47590-0001	J1
1	YELLOW	LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder	D3

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Questions

How big is the Project 3 PCB?

It measures 124.5 × 62.5 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Project 3 use?

71 parts, built around the CH340C, ESP32-WROOM-32D, LM2596S-5.0 and HDSP-7403. 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 Project 3 KiCad files?

From the Shourya-Basu/PCB-Design_Custom_ESP32_V1 repository on GitHub, at the commit this page was made from: the board is Project 3.kicad_pcb and its schematic Project 3.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Project 3 design in my own project?

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