klipper_filament_scale
Klipper Module and Macros to add filament scale capabilities with the HX711 load cell amplifier. This is still a very young project and only has basic functionality.
BOM
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1 - HX711 Amplifier board and Bar load cell, these usually come as a pack. There are two different sizes that I have found, one that has 2x M5 and one with 2xM4. The latter is 5mm shorter. Both sizes are supported. I have purchased these, but am looking into other options as well. https://www.aliexpress.com/item/33046037411.html?spm=a2g0o.cart.0.0.de2e3c00XCiZCg&mp=1
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2/4 - M4x16
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2/0 - M5x16
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3 new printed parts for the Carrot Patch (Shown below printed in RED)
There is an mount included that is the same style as the stock filament spool holder, this has not been tested yet.
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You will need to have 2 GPIO pins available for each pair of filament scales.
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Twisted wires are required.
Adding weight checks to print_start macro (Works with both single and MM prints)
- Add the script /PostProcessor/gcode-addWeight.py to your Post-Processing Scripts.This will add the weight to your PRINT_START variables.
- Add the following to your PRINT_START macro
{% set WEIGHT = params.WEIGHTS|default(0)|int %}
VERIFY_WEIGHT SCALE=0 PRINT_WEIGHT={WEIGHT}
