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vecinimod / pico_espresso

A simple Raspberry Pi Pico W based espresso machine controller design with support for SSR, digital dimmer, flow rate, async web UI, and OLED
MIT License
12 stars 3 forks source link

make watchdog for thermocouple not sensing temperature rise #24

Open vecinimod opened 1 year ago

vecinimod commented 1 year ago

Protect for the condition where thermal runaway due to fault in sensing heat - may need a debug flag that turns this off when running without mains plugged in

vecinimod commented 1 year ago

some examples of how to implement for drops in temperature and increases in temperature, but for an espresso machine this is more complicated due to stages https://jgaurorawiki.com/thermal-runaway

vecinimod commented 1 year ago

probably implement in steam one way (turn off steam for sure at certain timeout- add stage in profile create first line of defense) and then shots another way - preheat will also be a problem