ATtinySerialOut Minimal bit-bang send serial 115200 or 38400 baud for 1 MHz or 230400 baud for 8/16 MHz ATtiny clock.Perfect for debugging purposes. Code size is only 76 bytes@38400 baud or 196 bytes@115200 baud (including first call)
AvrTracing The last hope for the desperate AVR programmer. A small (344 bytes) Arduino library to have real program traces and to find the place where your program hangs.
BlueDisplay This library enables an Android smartphone or tablet to act as a graphical display for your Arduino.
digitalWriteFast Fast pin access for AVR microcontrollers
EasyButtonAtInt01 Small and easy to use Arduino library for using push buttons at any PinChangeInterrupt pin. Automatic debouncing, no delay required. Functions for long and double press detection are included.
FrequencyDetector Measure the main frequency of analog captured signal connected to an Arduino and check for noise and mute.
LCDBigNumbers Arduino library to write big numbers on a 1602 or 2004 LCD.
NeoPatterns Patterns for NeoPixel strips and matrixes including the patterns of the NeoPattern example by Adafruit.
PlayRtttl Plays RTTTL / RTX melodies/ringtones from FLASH or RAM.
PWMMotorControl Control brushed DC motors by PWM and uses optional attached encoders to drive fixed distances. For L298 or TB6612, or Adafruit Motor Shield
ServoEasing Enables smooth servo movement. Linear as well as other (Cubic, Circular, Bounce, etc.) ease movements for servos are provided. The Arduino Servo library or PCA9685 servo expanders are supported.
Talkie Speech library for Arduino. Generates speech from a fixed vocabulary encoded with LPC.