Arduino Nano Eagle Schematic

📦 Some libraries (like CH340) are not included by default – download them from GitHub EAGLE Libraries or SparkFun .

Instead of drawing from scratch, you can use a (symbol + footprint) as a module in your own design.

Mark D+ and D- pins clearly if you are building a custom Nano-on-board. If you'd like, I can help you further by: Explaining how to fix specific ERC errors in Eagle. Comparing the Nano vs. Nano Every schematic differences. Recommending PCB manufacturers for your first order. arduino nano eagle schematic

| Component | Description | |-------------------|--------------------------------------------------| | | Main microcontroller (28-pin DIP or TQFP-32) | | ATmega16U2 (or FT232RL/CH340) | USB-to-Serial converter | | MIC5205 | 5V → 3.3V voltage regulator | | LM1117 (or NCP1117) | 5V regulator (from Vin or USB) | | 16 MHz crystal | Main clock for ATmega328P | | 12 MHz crystal | Clock for USB controller (if using 16U2) | | Reset button | Manual reset | | LEDs | Power (green), TX/RX (blue/green), Pin13 (yellow) | | Headers | 2×15 pins (0.1" pitch, 2.54mm) |

This allows the Arduino IDE to reset the board automatically when uploading code. 📦 Some libraries (like CH340) are not included

Ensure the pin spacing is exactly 0.1 inches (2.54mm) . Dimensions: The standard Nano board is roughly 18 x 45 mm.

Once you switch to the Board View:

DEVICE U2 USB Pinout: VCC VCC D- D- D+ D+ GND GND