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Top 23 C++ arduino-library Projects
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Arduino-IRremote
Infrared remote library for Arduino: send and receive infrared signals with multiple protocols
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IRremoteESP8266
Infrared remote library for ESP8266/ESP32: send and receive infrared signals with multiple protocols. Based on: https://github.com/shirriff/Arduino-IRremote/
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I was using this library at the time.
https://github.com/T-vK/ESP32-BLE-Keyboard
Do you know of any other that can act as Bluetooth classic keyboard?
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Arduino-FOC
Arduino FOC for BLDC and Stepper motors - Arduino Based Field Oriented Control Algorithm Library
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ESP32-A2DP
A Simple ESP32 Bluetooth A2DP Library (to implement a Music Receiver or Sender) that supports Arduino, PlatformIO and Espressif IDF
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Several libraries exist to use NRF sensors. After searching and reading usage examples and reports, I decided for the RF24 library. This library is in active development, and its GitHub project repo has many examples to get started. Using PlattformIO, the library was downloaded and automatically added to my project.
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ArduinoJoystickLibrary
An Arduino library that adds one or more joysticks to the list of HID devices an Arduino Leonardo or Arduino Micro can support.
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AutoConnect
An Arduino library for ESP8266/ESP32 WLAN configuration at runtime with the Web interface
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Project mention: ESP32-Faikin: ESP32 based module to control Daikin aircon units | news.ycombinator.com | 2025-07-20
I was very happy to find that there are similar libraries for Mitsubishi units as well:
1: https://github.com/SwiCago/HeatPump
2: https://github.com/echavet/MitsubishiCN105Esphome
I've got this running on several units and it works great. If you buy ESP32 development boards with pre-soldered pins, you can even build the boards without soldering.
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NOTE:
The open source projects on this list are ordered by number of github stars.
The number of mentions indicates repo mentiontions in the last 12 Months or
since we started tracking (Dec 2020).
C++ arduino-library discussion
C++ arduino-library related posts
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Introducing OpenPager: A POCSAG Transmitter Library for Arduino
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Remote GPS Sensor: Data Transmission with NRF24L01
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A Weather Clock (with Alarms) for ESP32 / Raspberry Pi Pico Implemented with Arduino Framework
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IRRemote 程式庫搭配 Adafruit_NeoPoxel 程式庫的問題
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Can't enable auto-calibration of SCD41
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Help with coding arduino joystick
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Weird issue with PN532 NFC Reader.
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A note from our sponsor - SaaSHub
www.saashub.com | 7 Jun 2026
Index
What are some of the best open-source arduino-library projects in C++? This list will help you:
| # | Project | Stars |
|---|---|---|
| 1 | ArduinoJson | 7,166 |
| 2 | Arduino-IRremote | 4,966 |
| 3 | IRremoteESP8266 | 3,476 |
| 4 | Adafruit_NeoPixel | 3,380 |
| 5 | ESP32-BLE-Keyboard | 3,075 |
| 6 | Arduino-FOC | 2,858 |
| 7 | ESP32-A2DP | 2,603 |
| 8 | RF24 | 2,450 |
| 9 | ArduinoJoystickLibrary | 2,371 |
| 10 | DHT-sensor-library | 2,145 |
| 11 | HomeSpan | 2,110 |
| 12 | Adafruit_SSD1306 | 2,069 |
| 13 | arduinoWebSockets | 2,053 |
| 14 | WS2812FX | 1,717 |
| 15 | Control-Surface | 1,618 |
| 16 | gpio_viewer | 1,541 |
| 17 | ESPUI | 1,114 |
| 18 | OneButton | 1,099 |
| 19 | Adafruit_Sensor | 1,059 |
| 20 | Arduino-Temperature-Control-Library | 1,034 |
| 21 | AutoConnect | 991 |
| 22 | HeatPump | 988 |
| 23 | ArduinoThread | 970 |
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