2 layers185.4 × 152.4 mm
2 layers113.8 × 51.6 mm
Arduino1
Papa-Dawg/Custom-PCBCustom PCB with a Potentiometer and 7-Segment Display
- Size
- 113.8 × 51.6 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 68
- Nets
- 55
- Pads
- 204
- Tracks, vias
- 383, 48
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 8 May 2026
- Updated
- 8 May 2026
Overview
Arduino1 is an open-source printed circuit board by Papa-Dawg, from the Papa-Dawg/Custom-PCB repository on GitHub. It is a 2-layer board of 113.8 × 51.6 mm with 68 parts on 55 nets, routed with 383 tracks and 48 vias.
It is built around the ATMEGA328P-PU and CH340C. Its parts include 30 diodes, 16 resistors, 9 capacitors, 5 connectors and 3 switches. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
2
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)
CH340C
SOP-16-20℃~+70℃ 2Mbps 3.3V、5V 50uA 7mA Transceiver USB 2.0 SOP-16 USB Converters ROHSWCH (Nanjing Qinheng Microelectronics)USB Converters
README
README.mdPapa Dawg Custom PCB
Overview
This is a custom PCB designed in KiCad 9.0. It is an Arduino-compatible controller featuring:
- 7-Segment Display: Integrated layout for numerical feedback.
- Breakout Ports: Easy access to Port B, C, and D for prototyping.
- Onboard Controls: Includes a Reset button and a programmable button.
- Power Management: Integrated On/Off toggle and LED indicator.
Project Structure
/Arduino1.kicad_sch: Schematic design./Arduino1.kicad_pcb: Board layout and routing.3-D Model.png: Visual render of the completed board.
Status
- Schematic Design
- PCB Layout
- Fabrication / Physical Testing
License
This project is licensed under the CERN Open Hardware License.
Parts
68| Qty | Value | Footprint | References |
|---|---|---|---|
| 30 | LED | LED_SMD:LED_1206_3216Metric | D1, D2, D10, D11, D12, D13, D14, D15, D16, D17, D18, D19, D20, D21, D22, D23 +14 |
| 7 | 1k | Resistor_SMD:R_0805_2012Metric | R8, R9, R10, R11, R12, R13, R14 |
| 4 | 10K | Resistor_SMD:R_0805_2012Metric | R1, R7, R15, R16 |
| 4 | 1uF | LED_SMD:LED_1206_3216Metric | C3, C4, C5, C9 |
| 3 | 100nF | LED_SMD:LED_1206_3216Metric | C1, C2, C6 |
| 3 | Conn_01x08_Pin | Connector_PinHeader_2.54mm:PinHeader_1x08_P2.54mm_Vertical | J2, J3, J5 |
| 2 | 0R | Resistor_SMD:R_0805_2012Metric | R2, R3 |
| 2 | 5K1 | Resistor_SMD:R_0805_2012Metric | R4, R5 |
| 2 | C | LED_SMD:LED_1206_3216Metric | C7, C8 |
| 1 | 1M | Resistor_SMD:R_0805_2012Metric | R6 |
| 1 | ATmega328P-P | Package_DIP:DIP-28_W7.62mm | U1 |
| 1 | CH340C | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U2 |
| 1 | Conn_01x06_Pin | Connector_PinSocket_2.54mm:PinSocket_1x06_P2.54mm_Vertical | J1 |
| 1 | Crystal | Crystal:Crystal_HC49-U_Vertical | Y1 |
| 1 | DEBUG | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J4 |
| 1 | LOGO | footprints:dawg | G*** |
| 1 | R_Potentiometer | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | RV1 |
| 1 | Reset | Button_Switch_SMD:SW_SPST_B3U-1000P-B | SW1 |
| 1 | SW_SPDT | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | SW3 |
| 1 | User-Input | Button_Switch_SMD:SW_SPST_B3U-1000P-B | SW2 |
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Questions
How big is the Arduino1 PCB?
It measures 113.8 × 51.6 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Arduino1 use?
68 parts, built around the ATMEGA328P-PU and CH340C. 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 Arduino1 KiCad files?
From the Papa-Dawg/Custom-PCB repository on GitHub, at the commit this page was made from: the board is Arduino1.kicad_pcb and its schematic Arduino1.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Arduino1 design in my own project?
Its repository states no licence, so its author keeps all rights: ask Papa-Dawg before reusing the design.