Nodes to work with WS2812 (NeoPixel). The main difference from the other libraries that this library does not use a buffer to light up the LEDs. So it gives a possibility to light up a really long LED strip with a small microcontroller without a huge amount of RAM.

Support for ethernet shields that use Wiznet W5500 chipset.

Nodes to drive a common text liquid crystal displays with I²C or parallel interfaces.

Nodes to drive ST7735 based TFT LCD displays. This library supports 128x160 resolution displays which are connected through the hardware SPI interface. Physically, some displays based on the 7735 chip may differ from each other and have different sets of instructions for initialization. To solve this, the library contains several device nodes for different types of displays. These nodes are labeled "B", "G", "RG", and "RR".

Nodes to work with gyroscopes, accelerometers and barometers based on chips by STMicroelectronics: L3G4200, L3GD20H, LIS331DLH, LIS331HH, LIS3DH, LPS331.

Nodes to drive SD1306-based monochrome LCDs with I2C interface.

Nodes to read analog infrared range meters by Sharp (GP2Y0A) and convert the signal to distance values.

Nodes to control RC hobby servos

Support for RFID/NFC modules based on a PN532 chip.

Nodes to work with the HC-SR04 ultrasonic range meters.

Support for ESP8266-based MCUs.

Support for ESP8266 as a slave module

This library operates DS1302/DS1307/DS3231 based breakout RTC boards

Nodes to work with DHT11 or DHT21 sensors, or compatible sensors: RHT01, DHT22, DHT33, DHT44, AM2301, HM2301, AM2302, AM2303, RHT02, RHT03, RHT04, RHT05.