Idea : Proportional (analog) Hall-effect feedback for tension/compression

[matthew73210]

Hey there, quick idea about linear Hall-effect feedback for HH.

Has a proportional (analog) Hall sensor been considered for tension/compression feedback? Some MMU setups (mine included) have two spare ADC/thermistor inputs on the controller (or even I²C available). Two possible approaches:
• Single linear Hall centered, with two magnets on the carriage (similar in spirit to this stress sensor, but analog): https://www.printables.com/model/803180-voron-ercf-filament-stress-sensor
• Two linear Halls, one biased toward compression and one toward tension.

Wired to TH0/TH1 (ADC) these would provide a true proportional signal around mid-scale (≈ 1.65 V neutral at 3.3 V), giving HH continuous feedback instead of bang-bang. This could improve sync, Bowden compensation, and jam detection.

I’m happy to prototype hardware (e.g., A1324 / SS49E linear Hall), share measurements, and test a config branch.

However not to sure how usefull it'll be, i'll ask in the HH GitHub.

Cheers

[Lesorin]

I'd be open to testing.
I have A3144 3 pins handy but could grab some. if you need a tester ping me on discord @Mezabaru

[ningpj]

Something like the 49E linear analog hall effect sensor should support both compression and tension use cases with a single device.
It has a resting voltage of 50% of its supply and outputs a voltage proportional to the field strength / direction e.g < 2.5v compression, > 2.5v tension, etc