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MMU Feedback Tension Compression Sensor

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Model information

Source
Printables
Category
Accessories
License
Creative Commons — Attribution — Noncommercial
DetailsMakes & commentsRemixesCollectionsRelated

Welcome to my Feedback Sensor for MMU's

###### Please post your Makes ######
Please like this, download and post the make if you built it
It helps us makers with feedback and gets us some Prusa meters as most people don't pay it forward

Feel free to help my projects continue https://ko-fi.com/gcodegearhead 

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# Intro 
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I needed a multi lane feedback sensor for my Low Rider MMU due to the way it parks independant lanes right outside the toolhead.  See my toolhead XOL-Metrix UHF for the SV08

This is a remix of the Box Turtle Turtle Neck from Armored Turtle. 

It is functional I will post updates as and when needed.

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# Update Log
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DATE

Info

24-MAR-202

Initial Release. 

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# BOM
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Part

QTY

M3 x 14mm SHCS

1

M4 x 14mm BHCS (or custom length)

2

Heat Set Inserts M3 OD5 L5mm

1

Limit Switches D2FC NO+NC

2

ECAS 04 Fittings

3

Spring OD=6mm L=18mm Wire Ø0.5mm

2

Wire 22AWG or thicker

As required

PTFE Tube OD 4mm

As required

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# Assembly Instructions
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  • Print the parts as oriented. No Supports required

    • I used 0.2 layer height with 4 walls 15 % gyroid. 

  • Use the exact same limit switches 

  • Assemble parts as per pictures and below section view. 

    • The internal PTFE Tube is 37mm long

    • Note remove all black plastic parts from ECAS

  • The M2 screw holes are dependent on your printer tolerances. 

    • Let me know if its to loose and I will upload a tighter option, don't over tighten. 

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# Wiring 
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You want to wire the switches in parallel and in the Normally Open condition. See pictures for wiring.
Wire the two grounds together so that you only have 3 wires exiting the sensor. 

Happy Hare Changes

mmu_hardware.cfg

# These sensors can be replicated in a multi-mmu, type-B setup (see num_gates comment). 
# If so, then use a comma separated list of per-unit pins instead of single pin 
sync_feedback_tension_pin: ^mmu:PB3 (whatever pin you have)
sync_feedback_compression_pin: ^mmu:PB4 (whatever pin you have)

mmu_parameters.cfg

sync_feedback_enabled: 1 
sync_feedback_buffer_range: 25
sync_feedback_buffer_maxrange: 30 
sync_multiplier_high: 1.05 
sync_multiplier_low: 0.95

When enabled and working you will see a “Compression” , “Neutral” or “Tension” symbol in the MMU Panel 

Tags

syncbelayfeedbacksensortensioncompressionlowridermmu