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Filament Sensor - low voltage when connected to mainboard
Hi,
Refering articels:
[1] IR Filament sensor detection (MK3S): https://help.prusa3d.com/article/ir-filament-sensor-detection-mk3s_159426
[2] Original Prusa i3 MK2 to MK2.5S upgrade -> 20. Connecting the extruder cable bundle: https://help.prusa3d.com/guide/5-electronics_52680#53456
According to this [1] filament sensor rev. 0.4 should output around 5V without filament. My sensor does it, but only if white signal cable is not connected to mainboard, so I assume it is working fine.
But if I connect white cable to mainboard (forth pin, lower row according to [2]) then output signal drops to 0.03V (without filament).
I use the newest firmare 3.14.1.
Does it all mean, my RAMBo13a is damaged? Or should I try different sensor?
Posted : 26/02/2025 3:00 am