GCODE Button repeats many times

General Discussion
1

Basic Information:

Printer Model: Custom
MCU / Printerboard: BTT EBB42
Host / SBC Raspberry Pi Zero 2W
klippy 3.log (4.6 MB)
buttons.cfg.txt (307 Bytes)

Hi,
I am making a thing that presses an AeroPress, and I need my GCODE buttons to work correctly. From what it seems, when I press the button once, it senses it 7 times, which is not ideal.
How do I go about fixing this?

Thanks in advance
Dan

2

Hello @DJProPlusMax !

You may have alook on this thread:

1 Like
3

Probably as indicated by @EddyMI3D it is a bouncing effect of the switch / button.
As Klipper is not offering a user setting for debouncing, there are basically two alternatives that might even need to be combined:

  • High quality button
  • Hardware debouncing, in the worst case via Schmitt trigger inverter (I tried debouncing once with just some regular RC network and had little success)
4

Hi, it appears that only one of my buttons does that - and it is the cheapest microswitch I could find (MSW-22 for half a buck), so I might swap it out with a spare one. But I am not sure if it matters that it has debounce, since I want to use it as an endstop. My other red and green buttons (PBS-33B) are working flawlessly.

Have a nice day
Dan