BTT Manat M5P hotend issue

General Discussion
1

Basic Information:

Printer Model: Mod. A8
MCU / Printerboard: BTT Manta M5P
klippy.log
klippy .zip (214.8 KB)
Using Ender3 Sprite extruder

After installing Klipper I started to tune my printer. In this case PID tuning my hotend and bed.

I did a PID tuning by the “book” and i works as it should. Values saved to the config file.

The issue with flashing leds and ticking sound began even befor my PID tuning,

When I start the hotend, fx. 210 C ,I get 2 green leds flashing and a low “ticking” noise.
See attached pic.

image
image1264×939 132 KB

I marked the leds in the pic with green cirkles

The flashing starts direct after adding a value in the temp-target.
The “ticking sound” starts after approx 180C and continues.

This is only happening when I start the hot-end and not on the bed.

However, when I change the “Control” to “watermark” there is no ticking and only the led at the TH0 shines with a stedy green light

Everything else seems to work, but this issue of mine puzzles me.

Could any one please give me a clue on whats going on? or even better how to fix this issue.

Best regards
Kent Strobel

[extruder]
step_pin: PB0
dir_pin: !PB1
enable_pin: !PC4
microsteps: 16
rotation_distance: 7.370
nozzle_diameter: 0.400
filament_diameter: 1.750
heater_pin: PC5
sensor_type: EPCOS 100K B57560G104F
sensor_pin: PA1
control: pid
pid_kp = 16.524
pid_ki = 0.676
pid_kd = 101.003
min_temp: 0
max_temp: 315

2

The flashing of the LEDs (status LEDs for the heater outputs) are normal, because PID regulates the temperature by PWM.
The clicking can occur due to the high current impulses. Do you have a magnetic bed plate on the printer? Sometimes thy make that “noise” because the heater coil on the bed also works as a electric magnet.

It’s not really an issue, it a side effect.

3 Likes
3

Hi EddyMI3D

Thanks for the info regardig the magnetic bed. Never thought about it!

Another strange thing happend today as I was tuning pressure-advance with the Square-tower.gcode.

After printing the first 3 layers at 215C the hotend suddenly flipped out!
Temp was rising up to 350 C (Max-temp) and then the printer crashed.

Had to restart printer trying to print again until approx it printed 0.7mm then the hotend temp went off to 350C.

I checked the Gcode and everything seems ok. (I used Prusa slicer latest version). Will try to use Cura and Simplyfied 3D to compare.

Do you have any idea on what can start this temp issue?

Everything else seems to work as it should.

//Kent

4

Please attach a recent klippy.log to your next post.

5

Hi :slight_smile:

Attached the lates klipper log:
klippy (10).zip (10.4 KB)

I just started a print on same objekt but sliced with Simplyfied 3D.
At the moment it just prints! :slight_smile:
No issue regarding the hotend temp!?
Will add the Klipper log after print is ready

I will check up an other version of Prusa slicer to see if it lays on the slicer.
I will let you know of the outcome.

/Kent

6

Maybe wrong filament settings with the other slicer?

7

Well, the log should of course show the unexpected behavior and not just be the next best one.

8

HI everyone :slight_smile:

Did a new test to find out the “ticking” sound when starting the extruder.

Everything is fine until it reaches 170-180C then it starts “ticking”.
I was told that it maybe could have something to do with my magnetic heatbed but it could not be. I disconneted the heatbed and still same issue.

I attach a small vidoe on the issue. Turn up your volume to hear the “ticking”

IMG_9088 (1).zip (5.2 MB)

What can it be???

//Kent

9

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