2 layers68.6 × 53.3 mm
2 layers67.8 × 56 mm
Custom Arduino Uno-compatible PCB designed in KiCad, including schematic, PCB layout, routing, and 3D visualization.
- Size
- 67.8 × 56 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 56
- Nets
- 79
- Pads
- 264
- Tracks, vias
- 724, 60
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 26 Sep 2026
- Updated
- 26 Sep 2026
Overview
Arduino is an open-source printed circuit board by aarthirethinabala, from the aarthirethinabala/Arduino-Uno-Compatible-PCB repository on GitHub. It is a 2-layer board of 67.8 × 56 mm with 56 parts on 79 nets, routed with 724 tracks and 60 vias.
It is built around the ATMEGA16U2-MU, ATMEGA328P-PU and LMV358IDGKR, with the LP2985-33DBV and FDN340P among its other parts. Its parts include 13 capacitors, 9 connectors, 7 diodes, 5 ICs and 4 resistors. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
5
ATMEGA16U2-MU
QFN-32-EP(5x5)-40℃~+85℃ 16KB 16MHz 2.7V~5.5V 22 512Byte 512Byte 8 Bit AVR Built-in FLASH QFN-32-EP(5x5) Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
ATMEGA328P-PU
DIP-28-300mil-40℃~+85℃ 1.8V~5.5V 10bit 1KB 20MHz 23 2KB 32KB 8 Bit AVR Built-in FLASH DIP-28-300mil Microcontrollers (MCU/MPU/SOC) ROHSMicrochip TechnologyMicrocontrollers (MCU/MPU/SOC)
LMV358IDGKR
UncategorisedUnknown maker
LP2985-33DBV
SOT-23-5-40℃~+125℃@(Tj) 1 150mA 16V 3.3V 30uVrms 45dB@(1kHz) 575mV@(150mA) 850uA Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown、Enable control、Noise bypass terminal Positive SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
FDN340P
SOT-23-55℃~+150℃ 1 P-Channel 1.5V 121pF 20V 2A 500mW 56pF 7.2nC@4.5V 70mΩ@4.5V 779pF P-Channel SOT-23 MOSFETs ROHSonsemiMOSFETs
README
README.mdArduino Uno-Compatible PCB
Custom Arduino Uno-compatible PCB designed in KiCad, including schematic design, component footprint assignment, PCB layout, routing, and 3D visualization.
Project Status
Completed
Overview
This project involved designing an Arduino Uno-compatible printed circuit board(PCB) from the schematic stage through PCB layout and design-rule checking. The design was created in KiCad and includes the major components and connections required for an Arduino Uno-compatible board.
Tools Used
- KiCad
- PCB Editor
- Schematic Editor
- 3D Viewer
Board Features
- ATmega328P microcontroller
- ATmega16U2 USB interface
- USB-C connector
- DC barrel jack input
- 5V and 3.3V voltage regulation
- Reset switch
- LEDs and indicator components
- Crystal oscillators
- ESD protection
- Resistor networks
- Through-hole and SMD components
- Front and back copper routing
- Ground copper zones
Design Process
The PCB was developed through the following stages:
- Schematic design
- Electrical Rules Check(ERC)
- Footprint assignment
- PCB component placement
- Board outline creation
- Track routing
- Via placement
- Copper zone creation
- Design Rules Check(DRC)
- 3D visualization
Current Result
The schematic and PCB layout have been completed and checked using KiCad's ERC and DRC tools. The final design includes routed connections, vias, copper zones, and the complete board outline.
Project Images
Root Schematic
Headers Schematic
Power Schematic
ATmega328P-PU Schematic
PCB Layout
3D View
What I Learned
- Schematic design and ERC checking
- Component footprint selection
- PCB component placement
- Routing on multiple copper layers
- Via placement
- Ground-plane/copper-zone creation
- PCB design-rule checking
- KiCad 3D visualization
Parts
56| Qty | Value | Footprint | References |
|---|---|---|---|
| 7 | 100n | Capacitor_SMD:C_0603_1608Metric | C3, C4, C6, C7, C8, C9, C12 |
| 3 | Fiducial | Fiducial:Fiducial_1mm_Mask3mm | FID1, FID2, FID3 |
| 3 | YELLOW | LED_SMD:LED_0805_2012Metric | D4, D5, D6 |
| 2 | 1M | Resistor_SMD:R_0603_1608Metric | R1, R2 |
| 2 | 1k | Resistor_SMD:R_Array_Convex_4x0603 | RN2, RN4 |
| 2 | 1u | Capacitor_SMD:C_0603_1608Metric | C5, C10 |
| 2 | 22p | Capacitor_SMD:C_0603_1608Metric | C11, C13 |
| 2 | 47u | Capacitor_SMD:CP_Elec_5x5.4 | C1, C2 |
| 2 | 5k1 | Resistor_SMD:R_0603_1608Metric | R3, R4 |
| 2 | 5pF@1MHz | Resistor_SMD:R_0603_1608Metric | Z1, Z2 |
| 2 | Conn_01x08 | Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_Vertical | J5, J7 |
| 2 | Conn_02x03_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J1, J3 |
| 2 | D | Diode_SMD:D_1206_3216Metric | D2, D3 |
| 2 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Open_Pad1.0x1.5mm | JP1, JP2 |
| 1 | 10k | Resistor_SMD:R_Array_Convex_4x0603 | RN1 |
| 1 | 1kohm@100MHz | Inductor_SMD:L_0805_2012Metric | FB1 |
| 1 | 22R | Resistor_SMD:R_Array_Convex_4x0603 | RN3 |
| 1 | ATmega16U2-MU | Package_DFN_QFN:VQFN-32-1EP_5x5mm_P0.5mm_EP3.1x3.1mm | U3 |
| 1 | ATmega328P-P | Package_DIP:DIP-28_W7.62mm_Socket | U4 |
| 1 | Barrel_Jack_Switch | Connector_BarrelJack:BarrelJack_Kycon_KLDX-0202-xC_Horizontal | J9 |
| 1 | Conn_01x06 | Connector_PinSocket_2.54mm:PinSocket_1x06_P2.54mm_Vertical | J6 |
| 1 | Conn_01x10 | Connector_PinSocket_2.54mm:PinSocket_1x10_P2.54mm_Vertical | J4 |
| 1 | Conn_02x02_Odd_Even | Extra:02x02 tht hole | J2 |
| 1 | Crystal | Crystal:Crystal_HC49-4H_Vertical | Y2 |
| 1 | Crystal_GND2 | Crystal:Resonator_SMD_Murata_CSTxExxV-3Pin_3.0x1.1mm | Y1 |
| 1 | D | Diode_SMD:D_SMB | D1 |
| 1 | FDN340P | Package_TO_SOT_SMD:SC-59 | Q1 |
| 1 | FerriteBead | Inductor_SMD:L_0805_2012Metric | FB2 |
| 1 | GREEN | LED_SMD:LED_0805_2012Metric | D7 |
| 1 | LMV358IDGKR | Package_SO:MSOP-8_3x3mm_P0.65mm | U5 |
| 1 | LP2985-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U2 |
| 1 | NCP1117-5.0_TO252 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U1 |
| 1 | Polyfuse | Fuse:Fuse_1812_4532Metric_Pad1.30x3.40mm_HandSolder | F2 |
| 1 | SW_Push_Open_Dual | Button_Switch_SMD:SW_SPST_B3S-1000 | SW1 |
| 1 | USB_C_Receptacle_USB2.0_16P | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J8 |
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Questions
How big is the Arduino PCB?
It measures 67.8 × 56 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Arduino use?
56 parts, built around the ATMEGA16U2-MU, ATMEGA328P-PU, LMV358IDGKR and LP2985-33DBV. 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 KiCad files?
From the aarthirethinabala/Arduino-Uno-Compatible-PCB repository on GitHub, at the commit this page was made from: the board is Arduino.kicad_pcb and its schematic ATMEGA328P-PU.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Arduino design in my own project?
Its repository states no licence, so its author keeps all rights: ask aarthirethinabala before reusing the design.