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X1Plus / X1Plus

Custom firmware for Bambu Lab X1 and X1 Carbon 3D printers
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Chamber fan howling #336

Open G4Cab opened 2 days ago

G4Cab commented 2 days ago

Why is the chamber fan speed so bad regulated in it's hystereses?

It's damn annoying switching every second from 80% to 90% to 80% to 100% to 90%......

Argh, i'll go crazy!

(X1Plus v2.0 aka 1.08.0)

ccatlett1984 commented 2 days ago

If you boot into stock firmware, does the issue persist?

G4Cab commented 2 days ago

If you boot into stock firmware, does the issue persist?

Hmm, how should i test it? Reboot to original fw won't take me to newest original fw?

Or should i upgrade, test, and go back?

I think it's a new feature, then i never seen the chamber fan regulating it's speed automatically to the chamber temp.

Hawk30100 commented 15 hours ago

There is indeed a built-in feature on the stock X1C firmware which regulates the chamber fan, aux fan and nozzle temp, when the chamber temp reaches the softening temperature of the filament set in the AMS.

I did several tests and could watch how my printer slowly increased the chamber fan on its own, when the chamber temp reached about 38 degrees Celsius, when printing PLA with AMS. The fan went up to 100% at about 42-43 degrees Celsius. AUX fan to 70% at about 44-46 degrees Celsius and nozzle temp was reduced by 5 degrees Celsius automatically.

(I do print with top glass and door closed. Sometimes with ambient temp up to 32 degrees Celsius in summer)