Ethernet Library for Arduino

Cron expression parsing in ANSI C

Arduino library for interfacing with Dutch smart meters implementing DSMR

A client library for the Arduino Ethernet Shield that provides support for MQTT.

ESP32 logging library

Arduino HTTP Client library

A small Arduino library for GSM modules, that just works

Arduino Library for Sandbox Electronics [MOD-000020] SC16IS750 I2C/SPI to UART Bridge Module

Arduino/ESP8266 OpenTherm Library for HVAC system control communication

SSLClient - generic secure client Arduino library using mbedtls

Modbus library for RTU, ASCII and TCP protocols. Primarily developed on and for ESP32 MCUs.

Arduino library for the Nextion displays

A YAML parser and emitter in C++, made suitable for IoT devices

INA219 Current Sensor

Arduino Library for BMP280 sensors

Arduino library to facilitate time zone conversions and automatic daylight saving (summer) time adjustments.

StreamDebugger allows easier debugging of Serial-based communication on Arduino, like AT command interface in ESP8266, SIM800, SIM900, and other GSM modules

A fork of Simon Monk's Arduino Timer library

Arduino RFID Library for MFRC522

Arduino library for the SX1509 16-I/O GPIO expander.

LIS3DH Arduino Libs

I2C Library for the ABRACON AB08X5 Real-Time Clock Family. Uses i2cdevlib (github.com/jrowberg/i2cdevlib).

Arduino library for the Abracon AB1815 Real Time Clock.

Arduino library for MCP23S17 IO Expanders

A fork of the NimBLE library structured for compilation with Ardruino, designed for use with ESP32 without the local copies of FreeRTOS.h and .cpp

MCP_CAN Library

Arduino library for interfacing with CC1101 transceivers.