Arduino LED with Web Things API

This is a simple & small implementation of Mozilla's Web Thing API, which let you control the LED connected on Arduino pin 8 through the REST API (which means you can also control the LED using the Mozilla Web Thing Gateway).

This implementation makes use of a SD card to store textual contents (e.g. JSON, HTML).

To run this program, you need:

• Arduino
• Arduino Ethernet Shield (with W5100)
• LED attached on pin 8

This implementation make use of ArduinoJson to support JSON parsing. Currently it can run on an Arduino UNO with:

• Full serial debug message, but no mDNS or DHCP support
• DHCP support, but no mDNS or full serial debug message

... since the Arduino UNO has only 32K flash and 2K SRAM, limiting the sketch size. (the two configuration above both occupies 30K+ ROM)

Build

Use PlatformIO, run:

# `pio` is the shorthand of `platformio`
pio run            # Build
pio run -t upload  # Burn
pio run -t monitor # Attach serial terminal

Arduino IDE is not supported.

Configuration

You can configure to let this program use mDNS or DHCP or not. Please have a look of platformio.ini.

TODO

I write this program for fun.

• Add ESP8266 support

License

This program is licensed under The MIT License.