Yaeger

Yet another embedded gourmet experience roaster

or something like that

The gist

Yaeger is an embedded computer that takes control of your "coffee roaster" via Artisan-Scope. It currently supports reading data from two temperature probes as well as controlling a fan and pulsing a heater.

Primary goal

Is to use an old popcorn popper you have gathering dust in your basement and modifying it into a sample roaster for roasting small batches of coffee at a time.

Suported hardware:

• ESP32-S3 (devkit-1)
• 1 or 2 MAX31855 thermocouple chips
• 1 DC pwm capable dimmer for the fan (must support 3.3v control)
• 1 DC controlled AC SSR for controling the heating element (same as above)

Command and control

This repo includes a sample config for Artisan-Scope. In order for Yaeger to connect to your wifi, add a Credentials.h file in the src dir and add data in the following format:

const char *ssid = "Wifi";
const char *password = "WifiPassword";

Load the config in Artisan-Scope, change the server ip to match yours and click the on button.

Using Yaeger on the go

If you're out and about, without access to a Wifi, Yaeger can create its own access point. Add a define #define EASY_AP in the config.h file and you will be able to join the Yaeger wifi network. The ip of Yaeger is in this case 192.168.4.1.

Disclaimer

Be careful when messing about with electronics and high voltage. I can not and will not take any responsibility for any sort of damage or injury caused by Yaeger, either directly or indirectly. You do this at your own risk

You have been warned!