Fermtempctrl

Temperature controller for fermenting beer (or anything else). Measures the temperature of a fridge/freezer and turns it on and off using a wireless power socket to achieve the desired temperature.

Hardware

Particle Photon
Nexa EYCR-2300 wireless power socket
433 MHz transmitter
DS1820 temperature sensor
4.7kOhm resistor (for the temperature sensor)
Some wires and a protoboard

Connect the 433MHz transmitter to D0 and DS1820 temperature sensor to D2.

Currently only the Nexa power socket is supported (since it's the one I use) but adding similar devices shouldn't be hard.

Flashing particle device

Flashing via ui is currently not working, in the mean time do this:

npm run particle-login
// where foo is your device name
DEVICE=foo npm run particle-flash
npm run particle-logout

Development

// start server on default port 3000
npm run start-dev

// compile and watch changes in client
npm run bundle-dev

// or both
npm run dev

// lint
npm run lint

Configuration

With prefixed environment variables. All defaults are defined in 'server/appConfig.js'.

// e.g. change port
ft_port=4000 npm start

// or enable basic auth
export ft_authEnabled=true
export ft_authUser=foo
export ft_authPass=bar
npm start

Running

npm run build
npm run start

Heroku should "just work" (protip: check the maxDbRows option)

git push heroku master

PID autotuning

Autotuning the PID values uses this. Description what it does is here.