Top 23 C++ Arduino Projects

• Marlin

  226 11,285 10.0 C++

  Marlin is an optimized firmware for RepRap 3D printers based on the Arduino platform. | Many commercial 3D printers come with Marlin installed. Check with your vendor if you need source code for your specific machine.

  

  Project mention: Linear advance algorithm | reddit.com/r/MarlinFirmware | 2021-06-08

  As a side note: I can't recommend enabling HybridThreshold. Had some issues with layershifting (i.e. skipped steps) and disabled it again yesterday as I found this. Test ongoing.

• ArduinoJson

  6 5,199 8.4 C++

  📟 JSON library for Arduino and embedded C++. Simple and efficient.

  Project mention: Are there any guides on how to use an ESP to fetch data from a Google Sheet? | reddit.com/r/arduino | 2021-05-18

  I work with JSON mostly. So you might want to have a look at https://arduinojson.org/

• Scout APM

  Sponsored scoutapm.com

  Scout APM - Leading-edge performance monitoring starting at $39/month. Scout APM uses tracing logic that ties bottlenecks to source code so you know the exact line of code causing performance issues and can get back to building a great product faster.

• WiFiManager

  8 4,633 8.0 C++

  ESP8266 WiFi Connection manager with web captive portal

  Project mention: Best Wifi provision for end users | reddit.com/r/esp32 | 2021-05-02

  I haven't tested it myself but here is an example library that appears to do this pretty simply.

• blynk-library

  2 3,140 6.6 C++

  Blynk library for embedded hardware. Works with Arduino, ESP8266, Raspberry Pi, Intel Edison/Galileo, LinkIt ONE, Particle Core/Photon, Energia, ARM mbed, etc.

  Project mention: arduino uno with blynk app | reddit.com/r/arduino | 2021-04-30

• PJON

  19 2,561 7.8 C++

  PJON® (Padded Jittering Operative Network) is an experimental, arduino-compatible, multi-master, multi-media network protocol.

  Project mention: The operative system for a decarbonised, decentralised, digitised energy system | news.ycombinator.com | 2021-03-22

  When the physical layer of devices in the home don’t offer Wireless connectivity, hardware communication modules needs to be adopted to bridge the existing connectivity.

  This protocol exists already is called PJON: https://github.com/gioblu/PJON

• OpenMQTTGateway

  9 2,205 8.4 C++

  MQTT gateway for ESP8266, ESP32, Sonoff RF Bridge or Arduino with bidirectional 433mhz/315mhz/868mhz, Infrared communications, BLE, beacons detection, mi flora, mi jia, LYWSD02, LYWSD03MMC, Mi Scale compatibility, SMS & LORA.

  Project mention: Smart button | reddit.com/r/esp8266 | 2021-04-12

  A single ESP8266 running OpenMQTTGateway is capable of sending the commands that would otherwise have been sent by the physical remotes.

• Serial-Studio

  2 1,777 9.6 C++

  Multi-purpose serial data visualization & processing program

  

  Project mention: Cereal Monitor Opensource Dropin Replacement For | reddit.com/r/arduino | 2021-02-06

  you folks might wanna check SerialStudio out https://github.com/Serial-Studio/Serial-Studio

• SaaSHub

  Sponsored www.saashub.com

  SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

• IRremoteESP8266

  2 1,771 8.3 C++

  Infrared remote library for ESP8266/ESP32: send and receive infrared signals with multiple protocols. Based on: https://github.com/shirriff/Arduino-IRremote/

  Project mention: Making dumb LED strips smart. | reddit.com/r/esp8266 | 2021-04-21

  Your starter for 10 on ESP8266 and IR is crankoldgit's library When you say transistors I hope you mean big beefy power transistors or mosfets? The current led strips use can be surprising, my 4.5m RGBW 12V strip draws 9A at full brightness and the similar length WS2812 would pull 15A at full brightness if my software didn't restrict it. Do run the numbers on power consumption in regard to your switching device. It's possible to do what you want with the existing receiver but as you've already found it's not that straightforward and requires a good magnifier and enough knowledge of electronics to decipher the circuitry before you could modify it, If you want a reasonable size prebuilt RGB controller the generic H801 boxes are cheap, readily available, ESP based and easy to flash your own code to. The other possibility is to IR enable your ESP8266 using a simple IR receiver like one of the TSOP series, the filters and amplifier are built in and as it's just a 5mm package it's easy to mount it where it's convenient. That way you can have the option of IR or WiFi control, I occasionally use an old IR remote as buttons are often more convenient than web pages for controlling things, in my case the remote talks to an IR to WiFi bridge I built using the library linked. above.

• RF24

  9 1,726 8.4 C++

  OSI Layer 2 driver for nRF24L01 on Arduino & Raspberry Pi/Linux Devices

  

  Project mention: Wireless Communication Between 2 Picos | reddit.com/r/raspberrypipico | 2021-04-08

  I'm using C right now with https://nrf24.github.io/RF24/

• WS2812FX

  1 1,149 1.8 C++

  WS2812 FX Library for Arduino and ESP8266

  Project mention: [OC] My Aang and Zuko Painting on glass. Thinking of putting colored LED lights on the wall behind the frame, do you guys think it would be a good idea? | reddit.com/r/TheLastAirbender | 2021-02-06

  For libraries, I don't recommend the Adafruit neopixel lib. I think this is better, easier to use, more robust, and faster in ease of use and code execution. https://github.com/kitesurfer1404/WS2812FX

• ESP3D

  4 1,049 6.7 C++

  FW for ESP8266/ESP8285/ESP32 used with 3D printer

  Project mention: Establishing a decent documentation respository for the Longer LK1 | reddit.com/r/3Dprinting | 2021-02-22

• arduino_midi_library

  6 1,014 2.7 C++

  MIDI for Arduino

  

  Project mention: Need Help With MIDI to CV | reddit.com/r/synthdiy | 2021-04-15

  You can look at the examples of the MIDI library on github. Here for example, https://github.com/FortySevenEffects/arduino_midi_library/blob/master/examples/Basic_IO/Basic_IO.ino

• NeoPixelBus

  2 880 6.9 C++

  An Arduino NeoPixel support library supporting a large variety of individually addressable LEDs. Please refer to the Wiki for more details. Please use the gitter channel to ask questions as the GitHub Issues feature is used for bug tracking.

  Project mention: How to decrease SPI clock rate for long string of APA102s? | reddit.com/r/WLED | 2021-06-13

  I see FastLED defaults to a 12 MHz SPI clock and the rate can be controlled via the DATA_RATE_MHZ template parameter to addLeds(). I am having some challenges following the WLED code, but it looks like the NeoPixelBus library handling the APA102 strips defaults to SPI rate of 20 MHz.

• ESP32-Paxcounter

  1 879 9.2 C++

  Wifi & BLE driven passenger flow metering with cheap ESP32 boards

  Project mention: What Do People Think Of Pycom Products | reddit.com/r/IOT | 2021-02-01

• Adafruit_Sensor

  1 773 0.2 C++

  Common sensor library

  

  Project mention: The code I attached below is working for esp32 but not working onesp8266 | reddit.com/r/arduino | 2021-05-05

  #include //DHT and Adafruit Sensor library(https://github.com/adafruit/Adafruit_Sensor)

• HASwitchPlate

  1 677 5.9 C++

  LCD touchscreen for Home Automation

  Project mention: Is there a market for bespoke home automation components? You may recall I built this interface to our home that speaks, rings, and lights regular alerts. It has tasmota at its heart so is hardware based and easily interfaced with Home Assistant. Is there a market for me to make this kind of thing? | reddit.com/r/homeassistant | 2021-01-22

  Great news: you can build one yourself or you can buy one! :D

• ESP32-BLE-Keyboard

  8 660 2.2 C++

  Bluetooth LE Keyboard library for the ESP32 (Arduino IDE compatible)

  Project mention: Made it with python, arduino and a homemade proximity sensor. A literal life saver. | reddit.com/r/arduino | 2021-06-15

  why not use the esp32 ble keyboard?

• TaskScheduler

  4 652 4.0 C++

  Cooperative multitasking for Arduino, ESPx and STM32 microcontrollers

  Project mention: Understanding the rarely seen EVERY_N_MILLIS_I ? | reddit.com/r/FastLED | 2021-01-25

  Or just use TaskScheduler and never have to worry about this again. https://github.com/arkhipenko/TaskScheduler

• cartreader

  19 643 7.2 C++

  A shield for the Arduino Mega that can back up video game cartridges.

  Project mention: I have a copy of metroid fusion with a corrupted save that prevents any new saves from being made and was wondering if I could use a joey jr to restore the save file, and if so how do I do that? | reddit.com/r/retrogaming | 2021-06-04

• Universal-Arduino-Telegram-Bot

  2 613 4.3 C++

  Use Telegram on your Arduino (ESP8266 or Wifi-101 boards)

  Project mention: Cat feeder telegram bot | reddit.com/r/esp8266 | 2021-02-06

• async-mqtt-client

  2 587 0.9 C++

  📶 An Arduino for ESP8266 asynchronous MQTT client implementation

  Project mention: Help, function calls to some library functions made in callbacks are sometimes getting lost. | reddit.com/r/arduino | 2021-04-19

  https://github.com/marvinroger/async-mqtt-client/blob/master/src/AsyncMqttClient.hpp onMqttPublish() is a callback of type OnPublishUserCallback.

• MiniCore

  1 584 6.2 C++

  Arduino hardware package for ATmega8, ATmega48, ATmega88, ATmega168, ATmega328 and ATmega328PB

  Project mention: Running ATMEGA328P at 27mhz? | reddit.com/r/arduino | 2021-03-02

  You'd need to create your own board definition as the default install only handles 16MHz. MCUdude's MiniCore core shows how this could be done: https://github.com/MCUdude/MiniCore

• ESP32_BLE_Arduino

  1 573 0.0 C++

  The library source for the ESP32 BLE support for Arduino.

  Project mention: Trying to connect to ESP32 bluetooth on iOS | reddit.com/r/esp32 | 2021-01-22

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