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Elixir, Nerves, Phoenix on A Raspberry Pi
– Andi, 2018-08-26

Elixir and Nerves is fun!

A Phoenix-Channel listen on messages from web-clients and switch LEDs on and off.

In the other direction, pressing the button triggers a Phoenix-channel broadcast to the server, the server randomizes the three leds and sets them through Nerves.GPIO. Because setting the LED status broadcasts to all web clients, each display of the buttons on screen is in sync with the LEDs on Raspberry’s breadboard.

Find the source on Github. Also, you can download the video

A Pretty Strong Team

Elixir, Phoenix-Channels, and Nerves

The best thing about Nerves is the way you can update your raspberry over WiFi without fiddling around with SDCards. All you have to do is

  ... code ...
  mix firmware
  mix firmware.push nerves.local
  ... test ...

Update 2018-08-27

I added a thermometer-circuit and a display for the current temperature using the PCF8591 A/D-converter.

Circuit For Button and LEDs

Circuit for button and leds

Extended With Circuit For Thermo-resistor And PCF8591

Extension for thermo-resistor

The code for the thermo-extension is at Github-commit

A big credit for Arkham’s Example