2 layers76 × 56 mm
2 layers68 × 53 mm
- Size
- 68 × 53 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 64
- Nets
- 80
- Pads
- 285
- Tracks, vias
- 569, 29
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 26 Jul 2026
- Updated
- 26 Jul 2026
Overview
Prj1 is an open-source printed circuit board by courageforfoe1, from the courageforfoe1/Arduino-Uno-PCB repository on GitHub. It is a 2-layer board of 68 × 53 mm with 64 parts on 80 nets, routed with 569 tracks and 29 vias.
It is built around the ATMEGA16U2-MU, ATMEGA328P-PU and LMV358, with the LP2985-18DBV and FDN340P among its other parts. Its parts include 18 resistors, 14 capacitors, 10 connectors, 7 diodes and 5 ICs. 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)
LMV358
SOP-8-40℃~+125℃ 10pA 10pA 1MHz 2 2.5V~5.5V 20mA 20nV/√Hz@10kHz 2uV/℃ 40uA 5mV 600V/ms 65dB EMI filtering/RF suppression Rail-to-Rail Input, Rail-to-Rail Output SOP-8 Operational Amplifier ROHSTECH PUBLICOperational Amplifier
LP2985-18DBV
SOT-23-5-40℃~+125℃@(Tj) 1 1.8V 150mA 16V 30uVrms 45dB@(1kHz) 575mV@(150mA) 850uA Fixed Over Current Protection、Over Temperature Protection、Enable、Short Circuit Protection 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
Parts
64| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | R_Small | Resistor_SMD:R_0201_0603Metric | R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R16, R17, R18 |
| 5 | C_Small | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C2, C3, C4, C9, C11 |
| 4 | C_Small | Capacitor_SMD:C_0603_1608Metric | C5, C6, C7, C8 |
| 4 | LED | LED_SMD:LED_0402_1005Metric | D3, D4, D5, D7 |
| 2 | 10K | Resistor_SMD:R_0201_0603Metric | R14, R15 |
| 2 | C_Polarized_Small | Capacitor_SMD:CP_Elec_6.3x5.4 | C12, C13 |
| 2 | Conn_01x08_Socket | Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_Vertical | J2, J4 |
| 2 | Conn_02x03_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J1, J6 |
| 2 | Fuse_Small | Fuse:Fuse_1206_3216Metric | F1, F2 |
| 2 | SolderJumper_2_Open | Jumper:SolderJumper-2_P1.3mm_Bridged2Bar_Pad1.0x1.5mm | JP1, JP2 |
| 2 | Thermistor | Resistor_SMD:R_0603_1608Metric | TH1, TH2 |
| 1 | 100n | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C10 |
| 1 | 4-1437565-9 | Button_Switch_THT:SW_PUSH_6mm | SW2 |
| 1 | ATmega16U2-M | Package_DFN_QFN:QFN-28-1EP_5x5mm_P0.5mm_EP3.35x3.35mm | U2 |
| 1 | ATmega328P-P | Package_DIP:DIP-28_W7.62mm | U3 |
| 1 | Barrel_Jack | Connector_BarrelJack:BarrelJack_Horizontal | J9 |
| 1 | C_Small | Capacitor_SMD:C_0201_0603Metric | C1 |
| 1 | C_Small | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C14 |
| 1 | Conn_01x06_Socket | Connector_PinSocket_2.54mm:PinSocket_1x06_P2.54mm_Vertical | J5 |
| 1 | Conn_01x10_Socket | Connector_PinSocket_2.54mm:PinSocket_1x10_P2.54mm_Vertical | J10 |
| 1 | Conn_02x02_Odd_Even | Crystal:Crystal_SMD_SeikoEpson_FA128-4Pin_2.0x1.6mm | J8 |
| 1 | Crystal_Small | Crystal:Crystal_SMD_5032-2Pin_5.0x3.2mm | Y2 |
| 1 | Crystal_Small | Crystal:Crystal_HC49-4H_Vertical | Y1 |
| 1 | D | Diode_SMD:D_0805_2012Metric | D2 |
| 1 | D_Small | Diode_SMD:D_0805_2012Metric | D6 |
| 1 | D_Small | Diode_SMD:D_0603_1608Metric | D1 |
| 1 | FDN340P | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | LMV358 | Package_SO:MSOP-8_3x3mm_P0.65mm | U1 |
| 1 | LP2985-1.8 | Package_TO_SOT_SMD:SOT-23-5 | U4 |
| 1 | NCP1117-1.8_SOT223 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U5 |
| 1 | USB_B | Connector_USB:USB_A_TE_292303-7_Horizontal | J3 |
| 1 | USB_C_Plug_USB2.0 | Connector_USB:USB_B_OST_USB-B1HSxx_Horizontal | P1 |
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Questions
How big is the Prj1 PCB?
It measures 68 × 53 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Prj1 use?
64 parts, built around the ATMEGA16U2-MU, ATMEGA328P-PU, LMV358 and LP2985-18DBV. 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 Prj1 KiCad files?
From the courageforfoe1/Arduino-Uno-PCB repository on GitHub, at the commit this page was made from: the board is FORFOE COURAGE KORSHIE-01232471B/prj1.kicad_pcb and its schematic FORFOE COURAGE KORSHIE-01232471B/_restore_backup_2026-07-24T06-39-46-243/prj1.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Prj1 design in my own project?
Its repository states no licence, so its author keeps all rights: ask courageforfoe1 before reusing the design.