2 layers121 × 75.5 mm
Jlctest
cjheath/jlcbasic
JLC Basic parts library for Kicad fetched and converted from EasyEDA
46 parts5
4 layers59.9 × 66.5 mm
Arduino Uno
MohamedHassanExp/Arduino-UnoArduino uno development board
- Size
- 59.9 × 66.5 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 51
- Nets
- 73
- Pads
- 221
- Tracks, vias
- 368, 58
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 19 Nov 2025
- Updated
- 14 Oct 2026
Overview
Arduino Uno is an open-source printed circuit board by MohamedHassanExp, from the MohamedHassanExp/Arduino-Uno repository on GitHub, published under the MIT licence. It is a 4-layer board of 59.9 × 66.5 mm with 51 parts on 73 nets, routed with 368 tracks and 58 vias.
It is built around the ATMEGA16U2-AU, ATMEGA328-PU and AMS1117-3.3, with the AMS1117-5.0, USBLC6-2P6 and AO3401A among its other parts. Its parts include 12 capacitors, 12 resistors, 7 connectors, 5 ICs and 5 diodes. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
7
ATMEGA16U2-AU
TQFP-32(7x7)-40℃~+85℃ 16KB 16MHz 2.7V~5.5V 22 512Byte 512Byte 8 Bit AVR Built-in FLASH TQFP-32(7x7) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
ATMEGA328-PU
PDIP-28-40℃~+85℃ 1.8V~5.5V 10bit 1KB 20MHz 23 2KB 32KB 8 Bit AVR Built-in FLASH PDIP-28 Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) RegulatorsAMS1117-5.0
SOT-223-40℃~+125℃ 1 1.3V 15V 1A 5V 60dB Fixed Positive Short Circuit Protection、Thermal shutdown SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
USBLC6-2P6
SOT-666-6-40℃~+125℃ 150nA 17V 2 3.5pF 5.25V 5A@8/20us 6V ESD IEC 61000-4-2 Unidirectional SOT-666-6 ESD and Surge Protection (TVS/ESD) ROHSSTMicroelectronicsESD And Surge Protection (TVS/ESD)
AO3401A
SOT-231 P-Channel 14nC@10V 30V 47mΩ@10V、60mΩ@4.5V、85mΩ@2.5V 4A 55pF 645pF 80pF 900mV SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
B5819W
SOD-123-55℃~+125℃ 1.5A 1mA@40V 25A 40V 600mV@1A Standalone SOD-123 Schottky Diodes ROHSMDDSchottky Diodes
README
README.mdArduino Uno Custom Hardware Design
A custom-designed printed circuit board (PCB) based on the Arduino Uno architecture, featuring full schematic capture, layout, and manufacturing-ready fabrication files.
Table of Contents
About the Project
This project contains the complete hardware design files for an Arduino Uno development board. It serves as a physical hardware platform for embedded C/C++ programming, prototyping, and peripheral integration.
Tech Stack
- EDA Software: KiCad (for schematic capture and PCB layout)
- Hardware Target: Arduino Uno
Getting Started
Follow these instructions to view or modify the hardware design files locally.
Prerequisites
- KiCad EDA to open the core project files.
- A standard Gerber viewer (if you only want to inspect the manufacturing layers).
Installation
- Clone the repository:
bash git clone https://github.com/MohamedHassanExp/Arduino-Uno.git - Navigate to the project directory
bash cd Arduino-Uno-main - Open
Arduino uno.kicad_proproject file using KiCad.
Repository Structure
The repository is organized to separate the editable design files from the static manufacturing outputs:
- Design Files: The root directory contains the core KiCad project files, including the schematic (Arduino uno.kicad_sch) and the physical layout (Arduino uno.kicad_pcb).
- Board Renders: High-resolution 3D renders of the physical layout are available as Arduino uno-front.png and Arduino uno-back.png.
- Manufacturing Files (/Manufacturing/):
This directory contains everything a fabrication house like JLCPCB or PCBWay needs to manufacture and assemble the board:
- Arduino uno-gerber.rar: The compressed Gerber layers and drill files for PCB fabrication.
- Arduino uno-BOM.csv: The complete Bill of Materials for component sourcing and assembly.
- Arduino uno-position.csv: The centroid/pick-and-place data for automated SMD assembly.
Parts
51| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 100n | Capacitor_SMD:C_0402_1005Metric | C1, C2, C5, C7 |
| 4 | 22P | Capacitor_SMD:C_0402_1005Metric | C3, C4, C11, C12 |
| 4 | MountingHole | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4 |
| 3 | 1k | Resistor_SMD:R_0402_1005Metric | R2, R3, R7 |
| 2 | 10k | Resistor_SMD:R_0402_1005Metric | R6, R8 |
| 2 | 16MHz | Crystal:Crystal_SMD_TXC_7M-4Pin_3.2x2.5mm | Y1, Y2 |
| 2 | 1M | Resistor_SMD:R_0402_1005Metric | R1, R11 |
| 2 | 1k | Resistor_SMD:R_0603_1608Metric | R4, R5 |
| 2 | 22u | Capacitor_SMD:C_Elec_4x5.4 | C8, C9 |
| 2 | 5k1 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R9, R12 |
| 2 | RED | LED_SMD:LED_0603_1608Metric | D1, D2 |
| 1 | 0u1 | Capacitor_SMD:C_Elec_4x5.4 | C10 |
| 1 | 1.5k | Resistor_SMD:R_0603_1608Metric | R10 |
| 1 | 1u | Capacitor_SMD:C_0201_0603Metric | C6 |
| 1 | 500mA | Fuse:Fuse_1206_3216Metric | F1 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U5 |
| 1 | AMS1117-5.0 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U4 |
| 1 | ANALOG | Connector_PinSocket_2.54mm:PinSocket_1x06_P2.54mm_Vertical | J3 |
| 1 | AO3401A | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | ATmega16U2-A | Package_QFP:TQFP-32_7x7mm_P0.8mm | U3 |
| 1 | ATmega328-P | Package_DIP:DIP-28_W7.62mm_Socket | U1 |
| 1 | B5819W | Diode_SMD:D_SOD-123 | D4 |
| 1 | DIGITAL | Connector_PinSocket_2.54mm:PinSocket_1x18_P2.54mm_Vertical | J1 |
| 1 | D_Small | Diode_SMD:D_PowerDI-123 | D3 |
| 1 | GREEN | LED_SMD:LED_0603_1608Metric | D5 |
| 1 | ISP1 | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J4 |
| 1 | ISP2 | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J5 |
| 1 | Jack-DC | Connector_BarrelJack:BarrelJack_GCT_DCJ200-10-A_Horizontal | J7 |
| 1 | LOGO | LOGO | G*** |
| 1 | POWER | Connector_PinSocket_2.54mm:PinSocket_1x07_P2.54mm_Vertical | J2 |
| 1 | SW_Push | Button_Switch_SMD:SW_Push_1TS009xxxx-xxxx-xxxx_6x6x5mm | SW1 |
| 1 | USBLC6-2P6 | Package_TO_SOT_SMD:SOT-666 | U2 |
| 1 | USB_C_Receptacle_USB2.0_14P | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J6 |
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Questions
How big is the Arduino Uno PCB?
It measures 59.9 × 66.5 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Arduino Uno use?
51 parts, built around the ATMEGA16U2-AU, ATMEGA328-PU, AMS1117-3.3 and AMS1117-5.0. 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 Arduino Uno KiCad files?
From the MohamedHassanExp/Arduino-Uno repository on GitHub, at the commit this page was made from: the board is Arduino uno.kicad_pcb and its schematic Arduino uno.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Arduino Uno design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).