2 layers68.6 × 53.3 mm
Eos atmega328p board
embeddedos-org/eCAD-Hardware-Products
Hardware designs + EE docs + Board datasheets of Multiple products
71 parts8MIT
2 layers68.6 × 53.3 mm
Avyduino
avycado13/avyduinoMy take on the classic Arduino UNO. Powered by the same chips, but using a USB-C socket.
- Size
- 68.6 × 53.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 42
- Nets
- 47
- Pads
- 177
- Tracks, vias
- 668, 179
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 5 Oct 2026
- Updated
- 13 Oct 2026
Overview
Avyduino is an open-source printed circuit board by avycado13, from the avycado13/avyduino repository on GitHub. It is a 2-layer board of 68.6 × 53.3 mm with 42 parts on 47 nets, routed with 668 tracks and 179 vias.
It is built around the ATMEGA328P-PU, CH340G and LM358, with the ERJ6ENF1002V, ABLS2-12.000MHZ-D4Y-T and ABM8G-16.000MHZ-18-D2Y-T among its other parts. Its parts include 14 capacitors, 7 resistors, 6 connectors, 5 ICs and 2 crystals. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
12
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)
CH340G
SOP-16-40℃~+85℃ 2Mbps 3.3V、5V USB 2.0 USB to UART SOP-16 USB Converters ROHSWCH (Nanjing Qinheng Microelectronics)USB Converters
LM358
SOP-8-18V~18V 0℃~+70℃ 1.2MHz 10nA 2 24mA 3V~36V 500uA 50nA 5mV 80dB Built-in compensation SOP-8 Operational Amplifier ROHSMSKSEMIOperational Amplifier
ERJ6ENF1002V
0805-55℃~+155℃ 10kΩ 125mW Thick Film Resistor ±1% ±100ppm/℃ 0805 Chip Resistor - Surface Mount ROHSPanasonicChip Resistor - Surface Mount
ABLS2-12.000MHZ-D4Y-T
HC-49S-SMD-40℃~+85℃ 12MHz 18pF 50Ω ±30ppm ±30ppm HC-49S-SMD Crystals ROHSAbraconCrystals
ABM8G-16.000MHZ-18-D2Y-T
SMD3225-4P-40℃~+85℃ 16MHz 18pF 80Ω ±20ppm ±30ppm SMD3225-4P Crystals ROHSAbraconCrystalsAC0805FR-071ML
0805-55℃~+155℃ 125mW 150V 1MΩ Thick Film Resistor ±1% ±100ppm/℃ 0805 Chip Resistor - Surface Mount ROHSYAGEOChip Resistor - Surface Mount
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
SSW-106-01-T-S
插件,P=2.54mm-55℃~+105℃ 1 1x6P 2.54mm 2.64mm 4.7A 6P 8.51mm Phosphor bronze Square Hole Through Hole Tin Top 插件,P=2.54mm Female Headers ROHSSamtecFemale HeadersSSW-110-01-T-S-LL
插件,P=2.54mmFemale HeadersSamtec
SSW-108-01-T-S
插件,P=2.54mmFemale HeadersSamtecTSW-103-07-G-D
插件,P=2.54mm-55℃~+125℃ 2 2.54mm 2.54mm 6P Black Gold Phosphor bronze Through Hole 插件,P=2.54mm Pin Headers ROHSSamtecPin Headers
README
README.mdAvyduino
My take on the classic Arduino UNO. Powered by the same chips, but using a USB-C socket.
Features
- USB-C
- Exact same pinout as classic Arduino UNO
- Power input switching
- Easy to solder components
BOM
FORGE REVIEWERS PLEASE ACTUALLY USE MY CSV I compiled 2 BOMs. One is from octopart and has parts sourced from multiple separate suppliers. BOM here and one entirely from LCSC. BOM here
Firmware
See firmware/README.md for the Uno Optiboot first-flash procedure and a USB serial bring-up sketch. The ATmega328P uses the standard Arduino Uno bootloader; the CH340G is a USB-to-UART bridge and does not need custom firmware.
Parts
42| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 100nF | Capacitor_SMD:C_0805_2012Metric | C1, C2, C3, C6, C9, C10, C11, C12, C13, C14 |
| 4 | 22pF | Capacitor_SMD:C_0805_2012Metric | C4, C5, C7, C8 |
| 4 | MountingHole_3.2mm | Arduino_MountingHole:MountingHole_3.2mm | MH1, MH2, MH3, MH4 |
| 3 | 10k | Resistor_SMD:R_0805_2012Metric | R1, R5, R6 |
| 2 | 5.1k | Resistor_SMD:R_0805_2012Metric | R3, R4 |
| 1 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R7 |
| 1 | 12MHz | Crystal:Crystal_HC49-U_Vertical | Y1 |
| 1 | 16MHz | Crystal:Crystal_HC49-U_Vertical | Y2 |
| 1 | 1m | Resistor_SMD:R_0805_2012Metric | R2 |
| 1 | AO3401A | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | ATmega328P-P | Package_DIP:DIP-28_W7.62mm_Socket_LongPads | U1 |
| 1 | Analog Header | Connector_PinSocket_2.54mm:PinSocket_1x06_P2.54mm_Vertical | J3 |
| 1 | CH340G | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U2 |
| 1 | Digital/PWM Header | Connector_PinSocket_2.54mm:PinSocket_1x10_P2.54mm_Vertical | J2 |
| 1 | Digital/PWM Header | Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_Vertical | J4 |
| 1 | Diode | Diode_THT:D_DO-35_SOD27_P10.16mm_Horizontal | D1 |
| 1 | ICSP Header | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J6 |
| 1 | LM2931AZ-5.0_TO92 | Package_TO_SOT_THT:TO-92_Inline | U3 |
| 1 | LM358 | Package_DIP:DIP-8_W7.62mm_Socket_LongPads | U5 |
| 1 | LOGO | silkscreen:dinohat | G*** |
| 1 | MCP1700x-330xxTO | Package_TO_SOT_THT:TO-92_Inline | U4 |
| 1 | Power Header | Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_Vertical | J1 |
| 1 | USB_C_Receptacle_USB2.0_14P | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J5 |
| 1 | ~{RESET} | Button_Switch_THT:SW_PUSH_6mm | SW1 |
Questions
How big is the Avyduino PCB?
It measures 68.6 × 53.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Avyduino use?
42 parts, built around the ATMEGA328P-PU, CH340G, LM358 and ERJ6ENF1002V. 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 Avyduino KiCad files?
From the avycado13/avyduino repository on GitHub, at the commit this page was made from: the board is avyduino.kicad_pcb and its schematic avyduino.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Avyduino design in my own project?
Its repository states no licence, so its author keeps all rights: ask avycado13 before reusing the design.
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