LGPL 2.1

A list of the 261 libraries that are licensed with the LGPL 2.1 license.

8x8 Led Matrix Soldered	8x8 LED Matrix library.
Adafruit BLEFirmata	Modified Firmata code to work with Adafruit's nRF8001 Breakout and BlueFruit modules
AlmostRandom	AlmostRandom generates random number from a few entropy sources within the Arduino.
Amethyste_LSM6DS3	Expose les fonctionnalités des capteurs LSM6DS3.
ArduCAM	Using the ArduCAM camera module on the Arduino platform
Arducam_mini	Using the ArduCAM camera module on the Arduino platform
ArduinoBLE	Enables Bluetooth® Low Energy connectivity on the Arduino MKR WiFi 1010, Arduino UNO WiFi Rev2, Arduino Nano 33 IoT, Arduino Nano 33 BLE, Nicla Sense ME and UNO R4 WiFi.
ArduinoDMX	Control DMX lights with your Arduino.
ArduinoECCX08	Arduino Library for the Atmel/Microchip ECC508 and ECC608 crypto chips
ArduinoIRC	Easy library to make an Arduino IRC Bot (Also supports Twitch chat).
Arduino Low Power	Power save primitives features for SAMD and nRF52 32bit boards
ArduinoMenu library	Generic menu/interactivity system
ArduinoModbus	Use Modbus equipment with your Arduino.
ArduinoMqttClient	[BETA] Allows you to send and receive MQTT messages using Arduino.
arduino-NVM	Direct flash memory access, round robin virtual pages and EEPROM like memory. (Flash, VirtualPage, NVRAM)
ArduinoOTA	Upload sketch over network to Arduino board with WiFi or Ethernet libraries
ArduinoRS485	Enables sending and receiving data using the RS-485 standard with RS-485 shields, like the MKR 485 Shield.
Arduino SigFox for MKRFox1200	Helper library for MKR Fox 1200 board and ATAB8520E Sigfox module
ArduinoSound	[EXPERIMENTAL] A simple way to play and analyze audio data using Arduino.
Arduino_AdvancedAnalog	Advanced Analog library for STM32H7 boards
Arduino_APA102	Control rgb LEDs APA102
Arduino_APDS9960	A library for the APDS-9960 sensor
Arduino_BMI270_BMM150	Allows you to read the accelerometer, magnetometer and gyroscope values from the IMU on your Arduino Nano 33 BLE Sense Rev2
Arduino_BQ24195	Arduino library for the BQ24195 Power Management IC
Arduino_Braccio_plusplus	Board support library for the Arduino Braccio++ 6-DOF robot arm.
Arduino_EMBRYO_2	Control stepper motor
Arduino_GroveI2C_Ultrasonic	Get distance and travel time from M5stack Grove I2C ultrasonic sensor.
Arduino_HS300x	Allows you to read the temperature and humidity sensors of your Nano 33 BLE Sense R2.
Arduino_HTS221	Allows you to read the temperature and humidity sensors of your Nano 33 BLE Sense.
Arduino_JSON	[BETA] Process JSON in your Arduino sketches.
Arduino_KNN	[BETA] Arduino library for the K-Nearest Neighbors algorithm.
Arduino_LPS22HB	Allows you to read the pressure sensor of your Nano 33 BLE Sense.
Arduino_LSM6DS3	Allows you to read the accelerometer, gyroscope, and temperature values from the LSM6DS3 IMU on your Arduino Nano 33 IoT or Arduino Uno WiFi Rev2 boards.
Arduino_LSM6DSOX	Allows you to read the accelerometer and gyroscope values from the LSM6DSOX IMU on your Arduino Nano RP2040 Connect.
Arduino_LSM9DS1	Allows you to read the accelerometer, magnetometer and gyroscope values from the LSM9DS1 IMU on your Arduino Nano 33 BLE Sense.
Arduino_MachineControl	DEPRECATED. Arduino Library for Portenta Machine Control - PMC
Arduino_MKRIoTCarrier	Controlling the IoT MKR Carrier
Arduino_MKRENV	Allows you to read the temperature, humidity, pressure, light and UV sensors of your MKR ENV Shield.
Arduino_MKRGPS	Allows you to read the location from the GPS on your MKR GPS shield.
Arduino_MKRRGB	Allows you to draw on your MKR RGB shield.
Arduino_MKRTHERM	Allows you to read the temperature sensors connected to your MKR THERM shield.
Arduino_OAuth	[BETA] OAuth 1.0 client library for Arduino.
Arduino_PF1550	Arduino library for the PF1550 Power Management IC
Arduino_PortentaBreakout	Arduino Library for Arduino Portenta Breakout Carrier
Arduino_POSIXStorage	POSIX Storage Library for the Portenta C33, Portenta H7, Portenta Machine Control, and Opta
Arduino_Pro_Tutorials	This library contains the complete Arduino sketches from the Pro Tutorials.
Arduino_ScienceJournal	The Arduino Science Journal firmware for the Physics Lab kit and the Arduino Nano 33 BLE Sense.
Arduino_ScienceKitCarrier	Library and firmware for Arduino Science Kit R3
Arduino_Threads	Easy multi-threading for your Mbed OS-based Arduino.
Arduino_UnifiedStorage	Simplify cross-device storage management on Portenta platforms with a single library supporting SD, Flash, and USB storage access.
AS3935	Library to support Austrian Microsystems AS3935 lightning sensor.
AsyncDelay	Simple abstraction library implementing delays and timeouts.
Audio	Allows playing audio files from an SD card. For Arduino Due only.
AudioFrequencyMeter	Get the fundamental pitch of an audio signal
AudioZero	Allows playing audio files from an SD card. For Arduino Zero, MKRZero and MKR1000 only.
avr-fast-div	Optimized integer division for AVR hardware
avr-fast-shift	Optimised left and right shifting of `uint32_t` up to 31 places.
avr_stl	A port of ArduinoSTL Arduino library.
BeaconNano	Create a Beacon from an Arduino Nano Ble
BGWiFiConfig	BGWiFiConfig是一个为esp8266和esp32设计的简单易用Arduino配网库。
BleValueSync	Simplifies the configuration and communication using Bluetooth Low Energy (BLE) peripherals for synchronizing numeric values
Braccio	Allows to move each Braccio parts using simple calls.
CalibratedSpeed	Arduino Library for calibrating DC motors
CallMyFunction	Arduino library to call function with time restrictions
CaptureTimer	Arduino Input Capture Library
CH9328-Keyboard	USB HID Keyboard using WCH CH9328 chip. It is almost compatible with Arduino Keyboard library.
ChatGPTuino	Arduino library for making API calls to OpenAI's chatGPT.
CmdSerial	Simple library that provides an easy way to input/output data from the sketch.
ConfigurableFirmata	This library implements the Firmata protocol as a set of plugins that can be used to create applications to remotely interface with an Arduino board.
CoopTask	Portable C++ library for cooperative multitasking like Arduino Scheduler on ESP8266/ESP32, AVR, Linux, Windows
CSE_ArduinoRS485	Allows sending and receiving data through the RS-485 interface, using any Arduino-compatible boards.
custom_PortentaBreakout	Library for Arduino Portenta Breakout Carrier modified by alessandromrc (Alessandro Marcon)
DA16200 Wi-Fi Library for Arduino	Wi-Fi enable your Arduino sketches using Dialog's DA16200 Module
DCF77	Read and decode the atomic time broadcasted by the DCF77 radiostation.
Deneyap GPS ve GLONASS Konum Belirleyici	Arduino library for Deneyap GPS and GLONASS Locator
DeviceConfigJSON	Library enables device configuration using JSON.
DFRobot_BME280	This is a Library for BME280, the function is to read temperature and humidity and pressure(SKU: SEN0236).
DFRobot_BMP280	DFRobot Standard library(SKU:SEN0372).
DFRobot_ESP_EC_BY_GREENPONIK	Update from DFROBOT library for ESP32 compatibility
DFRobot_ESP_PH_WITH_ADC_BY_GREENPONIK	Update from DFROBOT library for ESP32+ADC compatibility
DimSwitch	A library to control dimmable ballasts for fluorescent light tubes.
Dimmable Light for Arduino	This library allows to easily control dimmers (also known as thyristors).
DUE_ADC_Oversampler	16 Bits ADC oversampler with PDC on SAM3x DUE
due_can	Allows for CAN bus communications with the Arduino Due
DUERS485DMA	RS485 with DMA for Arduino Due (SAM3X)
Eccel-C1	Arduino library for UART access to the Eccel Pepper C1 RFID reader
EDB	Extended Database Library
EduBox	A library for eduBox modules.
EEProm_Safe_Wear_Level	Robust EEPROM Wear-Leveling with CRC, Lifetime Override and Audit Functions.
ESPAsyncButton	Event-driven asynchronous button toolkit for ESP32
ESPAsyncHTTPUpdateServer	Simple/Stylized HTTP Update Server for ESPAsyncWebServer(by me-no-dev)
ESPCanary	Create an ESP32 or ESP8266 OpenCanary Honeypot
ESPEssentials	Essentials to get you started with your ESP8266 and ESP32 projects
ESPLogger	This library provides a simple interface to collect data on local storage (embedded flash or micro SD).
ESP OTA GitHub	ESP library for auto updating code from GitHub releases.
EspSaveCrash	Automatically saves exception details and stack trace to flash in case of ESP8266 crash.
EspSoftwareSerial	Implementation of the Arduino software serial for ESP8266/ESP32.
ESP32 I2C Slave	I2C Slave library for ESP32 (unofficial)
ESP32Logger	Logger for ESP32 for debugging C++-code
ESP32Logger2	Logger for ESP32 for debugging C++-code
esp32_https_server_compat	An Arduino library for an alternative ESP32 HTTP/HTTPS web server implementation
esp32_idf5_https_server_compat	An Arduino library for an alternative ESP32 HTTP/HTTPS web server implementation
ESP32_RTC_EEPROM	EEPROM emulation that stores in RTC RAM. Survives deep sleep, but not reset or power loss.
ESP32_TWAI	TWAI communication library for ESP32.
Esp8266-Mqtt-Canary	Create an ESP8266 OpenCanary Honeypot
EthernetEspAT	Enables wired (secure) network connection with esp8266 or esp32 as network adapter on Serial interface.
EthernetESP32	Alternative Ethernet library for the ESP32 platform.
ExtendedTime	library that adds extended millis and micros.
FastLEDHub	Control multiple FastLED lightstrip animations on the ESP8266 and ESP32 without reuploading.
FastPID	A PID controlled implemented using fixed-point arithmetic.
FileConfig	A library for reading and writing settings from a configuration file on a SD card.
FineTuneBMX160	Plug & play drivers for the BMX160 IMU sensor
FireplaceMLX	MobaLedLib Extension adds simulation of single fireplace
Firmata	Enables the communication with computer apps using a standard serial protocol. For all Arduino/Genuino boards.
FixedString	A stack based fixed string class
FlexWire	This library implements the master side of the I2C protocol in a platform independent way.
ghostl	Lock-free queue; C++ coroutines; and a nano-sized C++ STL adapter for MCUs like ESP8266/ESP32.
GoPRO	GoPRO API library for Arduino
Grove - Infrared Receiver And Emitter	Arduino library to control Grove - Infrared Emitter and Grove - Infrared Receiver.
HaCEspSockets	An Event driven MCU socket similar to windows socket experience .
HaCTimers	An event driven arduino Timer.
HaCWifiManager	An event driven wifimanager library with Json input.
HIH61xx	Library to access Honeywell HIH61xx humidity and temperature sensors.
IRremoteESP8266	Send and receive infrared signals with multiple protocols (ESP8266/ESP32)
ILI9341_T4	Optimized ILI9341 SPI driver for Teensy 4/4.1/micromod.
ILI9342_T4	Optimized ILI9342(C) SPI driver for Teensy 4/4.1/micromod.
InfraredMLX	Extension adds infrared features to control MobaLedLib using an infrared remote control
IniFile	Library to read and parse .ini files.
IoTGuru	Cloud based backend services to your devices.
IOTAppStory-ESP	Update your ESP8266, ESP32 & Nextion displays over the air(OTA)
IridiumSBDi2c	This library supports satellite data transmissions from anywhere on earth using the RockBLOCK family of Iridium 9602 and 9603 modems.
ISRHandler	A flexible, reusable interrupt handler class for Arduino, allowing template-based interrupt management.
jm_LCM2004A_I2C	jm_LCM2004A_I2C Arduino Library.
jm_PCF8574	PCF8574 Arduino Library.
KnockPatternDetector	Can record, save and detect knock patterns in an asynchronous way with many settings.
LC_EEPROM	Library for working with internal and external EEPROM memory via I2C.
LCD03	A library for I2C control of the LCD03 20x4 and 16x2 serial LCD modules from Robot Electronics.
ld2410	An Arduino library for the Hi-Link LD2410 24Ghz FMCW radar sensor.
LiquidCrystal	Allows communication with alphanumerical liquid crystal displays (LCDs).
List	The Ultimate Collection of Lists
loremipsum	An Arduino library to do lorem ipsum generation.
MaterialBoard	This library implements the Firmata protocol for use with the VirtualBoard project to remotely interface with an Arduino board.
MatrixKeypad	Simple to use library to interface matrix keypads.
MAX1464 Arduino library	A complete interface for the the Maxim MAX1464 Multichannel Sensor Signal Processor for Arduino.
MCCI SofwareSerial	Software UART for Arduino
MCP342x	Library to support Microchip ADC342x analogue to digital converters.
MD_AD9833	Library for using a AD9833 Programmable Waveform Generator.
MD_CirQueue	Library for FIFO queue implemented as a Ring Buffer.
MD_Cubo	Library for device independent LED Cubes.
MD_DS1307	Library for using a DS1307 Real Time Clock.
MD_DS3231	Library for using a DS3231 Real Time Clock.
MD_HX711	Library to read load cells using HX711 weight scale ADC
MD_MAXPanel	Implements functions to manage a panel of MAX72xx based LED modules
MD_MAX72XX	Implements functions that allow the MAX72xx (eg, MAX7219) to be used for LED matrices (64 individual LEDs)
MD_Menu	Library for displaying and managing menus on displays with with up to 2 lines.
MD_MIDIFile	Arduino Standard MIDI File (SMF) Player
MD_MSGEQ7	Implements functions for the MSGEQ7 7 band equalizer IC
MD_OnePin	One pin serial comms link
MD_Parola	LED matrix text display special effects
MD_PWM	PWM on arbitrary pins
MD_REncoder	Library for Rotary Encoder
MD_SmartCar	Core functions for movement control of a 2 wheeled SmartCar Robot using DC motors.
MD_SmartCar2	Core functions for movement control of a 2 wheeled SmartCar Robot using Stepper motors.
MD_SN76489	Library for SN76489 sound generator.
MD_Stepper	Stepper Motor control
MD_TCS230	Library for TCS230 TCS3200 Colour Sensor
MD_UISwitch	Library for Universal User Interface Switches.
MD_YM2413	Library for Yamaha YM2413 sound synthesizer.
MegunoLink File Manager	Library to provide access to files on embedded SD/LittleFS filesystem from MegunoLink.
Melody Player	This library provides an intuitive interface to play melodies on buzzers
MeshGnome	Mesh Synchronization and OTA for ESP-Now on the ESP8266.
MicroNMEA	Compact Arduino library to parse NMEA sentences.
MIDIUSB	Allows an Arduino board with USB capabilites to act as a MIDI instrument over USB.
milesTag	An Arduino library to implement milesTag lasertag with an ESP32 using the RMT peripheral.
mimuz-ch55x	mi:muz (a part of MIDI) library for ch55xduino
minbasecli	A minimal Command Line Interface C++ library implementation with HAL emphasis to be used in different kind of devices and frameworks.
MipsLib	Essential library for use with the MIPS kit.
MkrGsm1400IoT	A set of useful functions for the Arduino MKR GSM 1400 to use it for IoT. As example: Store integer into Telephonebook and read them after a reset.
MKRGSM	Enables GSM/GRPS network connection using the Arduino MKR GSM 1400 board.
MKRIMU	Allows you to read the acceleration, gyroscope, magnetic field and euler angles from the IMU on your MKR IMU shield.
MKRNB	Enables NB/GRPS network connection using the Arduino MKR NB 1500 board.
MLX90614	Library to support Melexis MLX90614 infrared thermometer
MM-S50MV	MMS50MV(ToF sensor) Driver
MobaLedLib	Arduino library for driving up to 768 (49152 ESP32) LEDs, signals, sound modules or other actuators via one signal line on a model railway
MobaTools	Functions (steppers, servos, leds) for model railroaders( and for others too )
ModbusRTU	Lightweight ModbusRtu protocol implementation for arduino.
Modmata	Control an Arduino over Modbus
Mouse	Allows an Arduino/Genuino board with USB capabilites to act as a Mouse.
Mozzi	Sound synthesis library for Arduino
multiplePinOps	An Arduino library to drive multiple pins with the same API.
Multitasker	A library for managing task switching and multitasking in Arduino projects.
NceCabBus	Enables NCE Cab Bus Communication
NetApiHelpers	Arduino Networking API helper classes and tests
NmraDcc	Enables NMRA DCC Communication
NVSRAM	Arduino library for Microchip 23LCV512 and 23LCV1024 NVSRAM.
omnicrystal	Modular Library for HITACHI HD44780
Omron D6F-PH Arduino Library	Library for I2C Communication with Omron D6F-PH Differential Pressure Sensor
OpenLCB_Single_Thread	Implements Single-threaded OpenLCB/LCC stack based on Arduino IDE.
pcf8574	Arduino library for PCF8574 io expander module
PCF8574_LH	Arduino library for PCF8574 expander over I2C
pdulib	A library written in C++ to encode/decode PDU data for GSM modems. Both GSM 7-bit and UCS-2 16 bit alphabets are supported which mean, in practice, you can send/receive SMS in any language (including emojis).
PhysicsLabFirmware	Firmware for the Physics Lab kit.
PicoWebsocket	Websocket Server and Socket
pimoroniTrackball	Connect the Pimoroni RGBW trackball breakout to a microcontroller.
PioSPI	Allows RP2040 to control a SPI bus on any of its pins using PIOs
PLCTimer	Simple Library for PLC-like timers.
PS2KeyAdvanced	PS2 keyboard FULL control and ALL keys processing, as well as LED control.
PS2KeyMap	PS2 keyboard codes from PS2KeyAdvanced to UTF-8 for any Latin language keyboard.
PS2KeyRaw	PS2 keyboard control and raw data receiving
Pulser	A lightweight library to send sequences of pulses on output pins.
ReefwingPWM	PWM on arbitrary pins
Regression	Easy-to-use Statistical Regressions.
RFID_MFRC522v2	Arduino RFID driver library for MFRC522 (SPI, I2C)
RotEncoder	Fast and precise rotary encoder library with low power consumption, optimized for high-speed and battery-powered applications.
rowguelike	The Game Engine for small LCD screen. "As not seen on TV"
RTCx	Library to access DS1307, DS1337/8, MCP7941x and PCF85263 real-time clocks.
RTCMemory	An intuitive library to simplify read and write operations on RTC memory of ESP8266 and its backup on flash memory.
RTCZero	Allows to use the RTC functionalities. For Arduino Zero, MKRZero and MKR1000 only.
RTT-Ethernet	RT-Thread Ethernet driver
RTT-GUI	Embedded GUI Library
SDConfig	A library for reading and writing settings from a configuration file on a SD card.
SerialRecord	Send and receive multiple values to and from the serial port, with error checking.
Serie	A library for mesures that makes easy to use time series
Servo	Allows Arduino boards to control a variety of servo motors.
SFR_Reader	StaRFIshrail I2C RFID Tag Reader Library
ShiftRegisterPISO	Asynchronous library for controlling PISO shift registers.
Si4703	Basic functionality of the Si4703 FM tuner chip.
Signature	Processing AVR microcontrollers signature
SmoothADC	Get ADC to return averaged values.
SoftWire	Software I2C library.
SoftwareSerialTX	A SoftwareSerial implementation only for transmitting data, maximum size reduced
SpaceTrek EasyStarterKit	EasyStarterKit by SpaceTrek
SpaceTrek MakerBox	The official library for the Space Trek MakerBox
Stepper	Allows Arduino boards to control a variety of stepper motors.
Stepper Async 5	This is a library that modifies the Arduino 'Stepper' library to drive a step motor asynchronously. [Korean]�Ƶ��̳� 'Stepper'���̺귯���� �����Ͽ� �񵿱��� ���ܸ��͸� ������ �� �ְ� ���ִ� ���̺귯���Դϴ�.
STM32duinoBLE	Fork of ArduinoBLE library to add the support of STM32WB, SPBTLE-RF, SPBTLE-1S, BLUENRG-M2SP, BLUENRG-LP and BLUENRG-M0 BLE modules.
TapCode	An Arduino library to interpret 'tap code' sent with a single button.
TelegramBot	Arduino library for TelegramBot
TFT	Allows drawing text, images, and shapes on the Arduino TFT graphical display.
tgx	A tiny 2D and 3D graphics library.
TimedBlink	An object oriented library for asynchrnous programmable LED blinking
TinyUPnP	Add port mappings to your router automatically
TLT	Provides network communication capabilities over ME310G1 Telit module.
TrivialKalmanFilter	Trivial Kalman Filter.
uECG	Allows to get data from uECG device using nRF24 module.
uMyo_BLE	Allows to get data from uMyo devices using BLE-enabled Arduinos (nRF52x and ESP32).
uMyo_RF24	Allows to get data from uMyo devices using nRF24 module AND nRF52840 boards.
Utils	Utility functions and macros to print with arguments
UtilsBoards	Auxiliary library to uniform the usage of the WiFi and I2C across different boards
Vishay_VCNL4200	Vishay VCNL4200 Long Range Proximity and Ambilent Light Sensor.
Vulintus_ATWINC3400	WiFi and BLE driver for ATMEL WINC3400 module
WebSockets	WebSockets for Arduino (Server + Client)
WiFi	Enables network connection (local and Internet) using the Arduino WiFi shield.
WiFiEspAT	Enables network connection with esp8266 or esp32 as network adapter.
WiFiNINA	Enables network connection (local and Internet) with the Arduino MKR WiFi 1010, Arduino MKR VIDOR 4000, Arduino Uno WiFi Rev.2 and Nano 33 IoT.
WiFi101OTA	Update sketches on your board over WiFi
wordwrap	An Arduino word wrap library.
XLR8HardwareSerial	Library to access UART XBs.
XLR8Wire	Library to access I2C XBs.
XMC_Servo	Allows Infineon XMC arm boards using Hardware PWM to control a variety of servo motors and controls.
zForce Air Library	A library that makes it easy to communicate with the zForce AIR Sensor.