EspressOS - The espresso operating system

What's this?

This is the firmware and UI for my espresso machine.

What can it do?

Boiler PID temperature control
Brewing mode

Actuates the solenoid and the pump
Steam mode

Sets the machine to the steam setpoint, with an automatic rollback in 15 minutes
Pump mode

This just engages the pump, exactly like the pump button on the front of the machine.
Backflushing mode

This automates the backflushing process by actuating the pump/solenoid at an interval a number of times.
Websocket API

A websocket API using protobuf for communication with the machine.
Web interface

This is not yet embedded into the machine, but at some point I will get to this too.
Pressure profiling

On what platform does it run?

It runs on the rp2040 based Raspberry Pi Pico W board.

Docs?

For now there are none. I will get there eventually but for now this is in the exploration phase.