Arduino Hacking Arduino

Source file for Arduino MQQT client, part of eMan IoT workshop apps stack (see Related).

Features

1. Connects to the local WiFi and MQTT broker
2. Subscribes to all related topics, lights up LEDs according to received messages
3. Supports both switching on/off for each LED separately via Arduino Hacking - iOS and watchOS and lighting up a longer color sequence using Arduino Hacking - Web

Communication

Communication with the MQTT broker takes place via following topics:

1. arduino/:id/:color – :color is one of red, green, blue or yellow
2. arduino/:id/stream – expects a sequence composed of RGBY characters. Any other character shuts all the LEDs off.
3. arduino/:id/status – online state of the device. Sends 0x01 on connect and 0x00 on disconnect (last will message)

Dependencies

• Requires Arduino compatible device (demo runs on Arduino Uno) with installed WiFi shield.
• PubSubClient installed in your IDE

Installation

• Download the IDE of your choice: [Arduino IDE](Download the Arduino Software) / PlatformIO
• Make sure you have the latest versions of all the included libraries and your WiFi shield's firmware
• Open led.ino file.
• Fill in all the required credentials/details in the config section (WiFi SSID & password, MQQT server address, login etc.)
• Upload the file to your Arduino.

The app expects your RGBY LEDs to be connected to PINs 5, 4, 3 and 2, however this is customizable within the code.

Related

• Arduino Hacking - Web
• Arduino Hacking - iOS and watchOS

License

Arduino Hacking Arduino is released under the MIT License.