2 layers150 × 100 mm
2 layers68.6 × 53.3 mm
Avrnote uno
kotoji/avrnote-unoDIY Arduino UNO R3 compatible board (KiCAD)
- Size
- 68.6 × 53.3 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 46
- Nets
- 49
- Pads
- 184
- Tracks, vias
- 504, 71
- Pours
- 29
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 24 Oct 2026
- Updated
- 29 Oct 2026
Overview
Avrnote uno is an open-source printed circuit board by kotoji, from the kotoji/avrnote-uno repository on GitHub. It is a 2-layer board of 68.6 × 53.3 mm with 46 parts on 49 nets, routed with 504 tracks and 71 vias.
It is built around the ATMEGA328P-PU, 74AHC1G125GW and CH340E, with the AZ1117CH-3.3TRG1, NJM7805SDL1-TE1 and GS1010FL among its other parts. Its parts include 12 capacitors, 10 resistors, 7 connectors, 5 ICs and 4 diodes. It belongs with the AVR (ATmega, ATtiny) boards of this library.
Main components
6
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)
74AHC1G125GW
SOT-353-40℃~+125℃ 1 1 2V~5.5V 4.8ns@5.5V,50pF 40uA 74AHC 8mA 8mA Tri-State Unidirectional SOT-353 Buffers, Drivers, Receivers, Transceivers ROHSNexperiaBuffers, Drivers, Receivers, Transceivers
CH340E
MSOP-10150uA 20mA 2Mbps 3.3V、5V Transceiver USB 2.0 MSOP-10 USB Converters ROHSWCH (Nanjing Qinheng Microelectronics)USB Converters
AZ1117CH-3.3TRG1
SOT-223-20℃~+125℃@(Tj) 0.003%Vout 1 1.2V@(800mA) 1.35A 10V 3.3V 4mA 70dB@(120Hz) Fixed Over Current Protection、Over Temperature Protection Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSDiodes IncorporatedVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
NJM7805SDL1-TE1
TO-252-40℃~+125℃ 1 1.5A 2.2V@(1.5A) 35V 4.2mA 45uVrms 5V 78dB@(120Hz) Fixed Over Current Protection、Over Temperature Protection Positive TO-252 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSNisshinbo Micro Devices Inc.Voltage Regulators - Linear, Low Drop Out (LDO) Regulators
GS1010FL
SOD-123FLSOD-123FL Diodes - General Purpose ROHSFUXINSEMIDiodes - General Purpose
README
README.mdAvrnote UNO R3
Arduino UNO R3 互換の自作基盤です。KiCAD の練習目的で作成しました。
Parts
46| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 0.1u | Capacitor_SMD:C_0603_1608Metric | C5, C6, C7, C8, C9, C10 |
| 5 | 1k | Resistor_SMD:R_0603_1608Metric | R4, R5, R7, R8, R9 |
| 4 | MountingHole_3.2mm | Arduino_MountingHole:MountingHole_3.2mm | MH1, MH2, MH3, MH4 |
| 2 | 22p | Capacitor_SMD:C_0603_1608Metric | C11, C12 |
| 2 | 47u | Capacitor_SMD:CP_Elec_6.3x5.4 | C1, C4 |
| 2 | 5.1k | Resistor_SMD:R_0603_1608Metric | R1, R2 |
| 2 | LED_Green | LED_SMD:LED_0603_1608Metric | D2, D3 |
| 1 | 10k | Resistor_SMD:R_0603_1608Metric | R6 |
| 1 | 10u | Capacitor_SMD:C_1206_3216Metric | C2 |
| 1 | 16MHz | ATS08A-E:XTAL_HC49P488W43L1085T450H368 | Y1 |
| 1 | 1M | Resistor_SMD:R_0603_1608Metric | R10 |
| 1 | 1u | Capacitor_SMD:C_0603_1608Metric | C3 |
| 1 | 3x2 M | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | ICSP |
| 1 | 470 | Resistor_SMD:R_0603_1608Metric | R3 |
| 1 | 500mA | Fuse:Fuse_1206_3216Metric | F1 |
| 1 | 74AHC1G125 | Package_TO_SOT_SMD:SOT-23-5 | U4 |
| 1 | ATmega328P-P | Package_DIP:DIP-28_W7.62mm | U5 |
| 1 | AZ1117CH-3.3TRG1 | AZ1117CH-3.3TRG1:VREG_AZ1117CH-3.3TRG1 | U1 |
| 1 | Analog | Connector_PinSocket_2.54mm:PinSocket_1x06_P2.54mm_Vertical | J6 |
| 1 | CH340E | Package_SO:MSOP-10_3x3mm_P0.5mm | U3 |
| 1 | DC | Connector_BarrelJack:BarrelJack_Horizontal | J2 |
| 1 | Digital/PWM | Connector_PinSocket_2.54mm:PinSocket_1x10_P2.54mm_Vertical | J5 |
| 1 | Digital/PWM | Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_Vertical | J7 |
| 1 | GS1010FL | Diode_SMD:Nexperia_CFP3_SOD-123W | D1 |
| 1 | LED_Orange | LED_SMD:LED_0603_1608Metric | D4 |
| 1 | NJM7805SDL1 | Package_TO_SOT_SMD:ATPAK-2 | U2 |
| 1 | Power | Connector_PinSocket_2.54mm:PinSocket_1x08_P2.54mm_Vertical | J4 |
| 1 | SW_Reset | Button_Switch_THT:SW_PUSH_6mm | SW1 |
| 1 | USB_C_Recept_USB2.0 | Connector_USB:USB_C_Receptacle_G-Switch_GT-USB-7010ASV | J3 |
| 1 | VCCSEL | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J1 |
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Questions
How big is the Avrnote uno PCB?
It measures 68.6 × 53.3 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Avrnote uno use?
46 parts, built around the ATMEGA328P-PU, 74AHC1G125GW, CH340E and AZ1117CH-3.3TRG1. 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 Avrnote uno KiCad files?
From the kotoji/avrnote-uno repository on GitHub, at the commit this page was made from: the board is avrnote-uno.kicad_pcb and its schematic avrnote-uno.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Avrnote uno design in my own project?
Its repository states no licence, so its author keeps all rights: ask kotoji before reusing the design.