Coffee Roaster

A Raspberry Pi 3 coffee roaster running on Windows IoT.

### Purpose Coffee roasting at home allows complete control over the final flavor of a cup of coffee.

Although many manual methods can be used for roasting coffee beans at home, I wanted a precise and mostly automated way of roasting small batches of beans.

Features

Operated via web app on a mobile device
Ability to control fan and heating elements separately
Ability to hold a steady temperature
Chart to display roasting profile
Automatic safety cool-down if temperature is too high
REST API control of hardware for easy integration across platforms

Hardware

Raspberry Pi 3
MAX31855 Thermocouple
1040 watt heating element from Nostalgia hot air popper
18 volt fan from Nostalgia hot air popper
25A 24-380VAC relay for controlling heating element
25A 5-200VDC relay for controlling fan
Glass hurricane lamp chimney
PC power supply for easy power management

Software

Windows IoT Core
jQuery Mobile
Restup REST api for Windows UWP