Heated Bed Power Blinking (RADDS)



  • Hello so I am having an issue where when I set the heated bed to say 60C, the heated bed is getting power in very short blips. Both the led next to the mosfet on radds, and the led on the heated bed, blink at a consistent rate when I turn it on. It looks like it is only on for a very short blip, every half of a second or so. In my room the bed lies around 22-23C, but after having the bed blinking for 30 minutes it reaches 26C, so it is working. I believe the issue is the PID parameters. This is my config file, if someone could tell me what I am doing wrong that'd be great. The bed I am using is a standard pcb heater from an old anet a8. Here part of my config.g…

    [[language]]
    ; Heater and thermistor section
    M305 P0 T100000 R4700 H0 L0				; Put your own H and/or L values here to set the bed thermistor ADC correction
    M305 P1 T100000 R4700 H0 L0				; Put your own H and/or L values here to set the first nozzle thermistor ADC correction
    M305 P2 T100000 R4700 H0 L0				; Put your own H and/or L values here to set the second nozzle thermistor ADC correction
    M301 H0 P85 I5 D500 T2.7 W200 B5		        ; PID settings for heated bed
    M301 H1 P10 I0.10 D100 T0.50 S1.0		        ; PID settings for extruder 0
    M301 H2 P10 I0.10 D100 T0.50 S1.0		        ; PID settings for extruder 1
    M570 S120								; Increase to allow extra heating time if needed
    
    

  • administrators

    Unless you are running an old firmware version, you should remove the M301 commands from config.g and tune the heaters as described at https://duet3d.com/wiki/Tuning_the_heater_temperature_control.


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