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Schematics Library

All schematics, pinouts, and datasheets for our products in one table. Hosted locally for fast, version-stable access — no third-party redirects.

By product

// 43 files hosted · ~69 MB
Product Schematic / Pinout / Datasheet
Arduino Uno R3 Schematic · Pinout · Datasheet
Arduino Nano Schematic · Pinout · Datasheet
Arduino Mega 2560 Schematic · Pinout · Datasheet
Arduino Pro Mini Schematic
ESP32 Dev Board DevKitC schematic · Datasheet
ESP32-S3 Datasheet (schematic on last page)
ESP32-C3 Datasheet (schematic on last page)
ESP8266 NodeMCU Datasheet · NodeMCU GitHub
Raspberry Pi 5 Product brief (schematic inside) · Mechanical
Raspberry Pi 4 Schematic · Product brief · Mechanical
Raspberry Pi Zero 2 W Schematic · Mechanical
Raspberry Pi Zero W Schematic · Mechanical
Raspberry Pi Pico W Datasheet (schematic inside) · Pinout
Raspberry Pi Pico Datasheet (schematic inside) · Pinout · RP2040 datasheet
DHT11 Datasheet
DHT22 / AM2302 Datasheet
HC-SR04 Datasheet
MPU6050 Datasheet · Register map
BME280 Bosch datasheet · Adafruit PCB schematic
BMP280 Bosch datasheet · Adafruit PCB schematic
BH1750 Datasheet
DS18B20 Datasheet (Analog Devices)
L298N Datasheet
SG90 Servo Spec page (servodatabase)
28BYJ-48 + ULN2003 Stepper datasheet · ULN2003 datasheet
SSD1306 OLED Datasheet
16×2 LCD HD44780 datasheet
WS2812B / NeoPixel Datasheet
Breadboard
Jumper Wires

Why local copies

  • Fast — no waiting on Analog Devices / TI rate-limited mirrors.
  • Stable — links don't break when manufacturers reshuffle their datasheet portals.
  • Verified — we sanity-check each PDF before publishing here.

Licensing

Source License
Arduino schematics CC-BY-SA-4.0
Raspberry Pi schematics / datasheets "Reduced" / Pi Foundation Limited License (HAT-design use)
Espressif schematics + datasheets Permissive — verify per-PDF footer
Adafruit board files CC-BY-SA-3.0
Bosch / ST / TI / Analog / Maxim / ROHM datasheets Manufacturer copyright — redistributed under fair-use for product support

Missing something?

Open an issue at github.com/circuitrocks or post in the forum and we'll add it.

Last updated: 2026-05-13 · Source on GitHub