Smart Filament Sensor with runout switch and RGB backlit button

I found the original model to be a really good sensor but I wanted more quality of life features.

Bill Of Materials

TRT5000 Tracking Module

There are so many different versions of these, with different mounting hole positions and sensor heights. Make sure it looks like the mounting hole is in the centre

JST XH2.54 

6 pin pair for standalone or 7 pin for multi toolhead setups. Other pin counts as needed to connect to MCU

Micro Tactile Switch  6 x 6 x 5mm 

RGB LED from Stealthburner. Untested option

Wire 30AWG for RGB, button and switch. Up to 22AWG for connecting to MCU

5mm steel ball

CYT1073   micro limit switch

Shim  M3 0.2mm

    To adjust sensor height

M2 × 5 or 6mm FHCS for cover

M2  SHCS any length from 12 to 16mm will work for switch

plus hardware as required by original model except the sensor, I'm using a different version

If setting up multiple I recommend a RP2040-Zero flashed with Klipper. This is also a really good guide for CAN, as well as this one for USB.

Printing

Printer should be well calibrated. These are the settings I used.

0.2mm layer height

4 walls

40% Infill 

5 solid top and bottom layers

No supports needed. Orientate as shown

The model as shown will mount to the left side of a panel. I have not tested but if you mirror it should mount to the right side

Assembly

Refer to photos, CAD, original project and your own intuition.

Connecting to Printer and Software Setup

Setup as you would the BTT SFS V2.0

Add a gcode button and neopixel and configure some macros

EDIT 4th June: Added example Klipper config files for multi tool and single