Library Reference

AccelStepper

Advanced stepper motor control with acceleration/deceleration.

Servo

Core Arduino library for controlling hobby servo motors.

Adafruit BME280 Library

Driver library for the BME280 pressure/humidity/temperature sensor.

Adafruit BMP280 Library

Driver library for the BMP280 pressure/temperature sensor.

Adafruit Fingerprint Sensor Library

Arduino driver for the R307/AS608/FPM10A family of UART optical fingerprint sensors.

DHT sensor library

The standard Arduino library for reading DHT11, DHT21, and DHT22 temperature/humidity sensors.

MFRC522

Driver library for the RC522 RFID/NFC reader module.

MPU6050 Library

I2Cdevlib-based driver for the MPU6050 6-axis IMU.

Adafruit CircuitPython SSD1306

The Raspberry Pi / CircuitPython equivalent of Adafruit's Arduino SSD1306 driver, built around Pillow images.

Adafruit GFX Library

Core graphics primitives library used by most Adafruit displays.

Adafruit SSD1306

The standard Arduino driver for SSD1306 OLED panels, built on top of Adafruit GFX.

GxEPD2

Driver library for a wide range of e-paper display panels.

LiquidCrystal I2C

Drives HD44780-family character LCDs through a PCF8574 I2C backpack with simple print() calls.

RPLCD

A pure-Python driver for HD44780 character LCDs over I2C or GPIO on Raspberry Pi.

TFT_eSPI

High-performance SPI TFT display driver for ESP32/ESP8266.

ArduinoJson

Fast, memory-efficient JSON parsing and serialization library.

Blynk

IoT platform library for building mobile-app-connected projects.

ESP8266WiFi

Core Wi-Fi library bundled with the ESP8266 Arduino core.

IRremote

Library for sending and receiving infrared remote signals.

PubSubClient

Lightweight MQTT client library for microcontrollers.

RadioHead

Packet radio driver supporting NRF24L01, RFM95, and more.

RC-Switch

Library for sending/receiving 433MHz remote-control signals.

WiFi (ESP32 Core)

Core Wi-Fi library bundled with the ESP32 Arduino core.