roast - esorensen.com

roast

A collection of 3 posts

User Interface and Firmware

User Interface and Firmware

This page gives a high level overview of the user interface design of the coffee roaster. I discuss the management of responsibilities between the Nextion display and the Arduino controller and summarize the UI elements.

Building the Control Board

Building the Control Board

This pages summarizes the bill-of-materials and schematic for the coffee roasting controller. Wiring up the controller is pretty straightforward and follows directly from the schematic.

Modifying the Air Popper

Modifying the Air Popper

This page shows the process of modifying a Poppery II popcorn popper so that the motor and heater coils can be operated independently of each other. During the modification a thermistor is added to monitor the temperature of the coils and a thermocouple to monitor the chamber temperature.