I can't get the BTT filament sensor to work

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1

What is the problem?

Greetings everyone. I'm using a BTT smart filament sensor with an Ender 3 V2 and Raspberry Pi 4. Every time I test the sensor, it doesn't work.

I've tried cutting the filament as well as pressing the lever on the extruder but the sensor never pauses the print job.

What did you already try to solve it?

I have the cable from the sensor plugged into the RPI header at 3 of the 4 pins recommended by the GitHub page for the Smart Filament Sensor plugin. I think mine are 13, 15, and 17. This diagram shows the pin numbers for the RPI header and here's where I plugged in the cord. Is there a certain orientation the cord is suppose to be plugged in?

Here's a screenshot of my settings in the Smart Filament Sensor plugin. For the GPIO pins field I have it set to "13 15 17". Am I only supposed to have one number? I tried one number before, but nothing changed.

Additional information about your setup (OctoPrint version, OctoPi version, printer, firmware, what kind of hardware precisely, ...)

  • OctoPrint version 1.8.6V

  • OctoPi version 0.18.0, running on Raspberry Pi 4 Model B Rev 1.5

  • Ender 3 V2

  • Using the M115 command in the console it came up with this:
    "FIRMWARE_NAME:Marlin E3V2-Extensible-UI (Jun 6 2021 13:54:31) SOURCE_CODE_URL:github.com/MarlinFirmware/Marlin PROTOCOL_VERSION:1.0 MACHINE_TYPE:Ender-3 V2"

  • Board number says 4.2.2.

Thanks in advance for any help with this.

1 Like
2

Has anyone made this sensor work? Im trying to use a BTT smart Sensor for octoprint connected to the Pi?

3

Nevermind. Search from this site had nothing. I found this with Google

Octoprint-Smart-Filament-Sensor

4

Your image and the chart of the pins show you are plugged into pins 24, 26, and 28.
Yes there is always an orientation since pin 17 is 3v power and 13 & 15 are gpio

If you intended to use 13, 15, & 17 you started counting from the wrong end of the header. Pins 1 & 2 are at the end nearest the corner of the board.