ArduTone is an Arduino library ported from PX4 firmware. It allows you to play tunes on nearly any Arduino because it only uses standard C++ and arduino functions without any explicit registers.

Personal Library for 128x64 OLED Display for Arduino

This library is for the Cytron Line Sensing Array: LSA08

Arduino library for direct write/read registers of a device conected by I2C bus. Tested on DS3231

Arduino Uno AM2320 I2C (temperature and humidity) sensor support in uLisp.

Status Class extending the Arduino Serial library capabilities

a library for Arduino to set mode, read and write GPIO digital pins using port manipulation

Arduino Class that allows variables to be modified via serial monitor. The overall goal is to allow variables to change without re-upload to hasten the debug and tuning processes.

USB+Ethernet Dev/App Kit - Library & Examples

ElectroBlocks is a "drag and drop" app for programming the Arduino. You use this with Serial Monitor, Bluetooth, NeoPixels, LED Matrix, IR Remotes and much more. It also has a debug block which will pause the program and print out all the variables. You can also save and see the code view as well.

Librería que permite el manejo de componentes de hardware para la medición de valores de batería y detección de peso empleando sensor velostat.

web-arduino

Simple basic protocol without ack

A simple library for reading Nunchuk data.

Si5351q is a library for Arduino UNO or Nano, which allows a simple and quick configuration via I2C for the si5351 clock generator using fractional mode with farey approximation.