Using GPIO for loadcell integration?
Hi all 🙂
I'm wanting to use https://www.printables.com/model/1196950-filament-weight-scale-spool-holder-prusa-core-one or even https://www.printables.com/model/1370600-1kg2kg-filament-weight-scale-spool-holder-prusa-co to get a rough weight or % estimate to be able to guesd how much still is on the spool, and when I need to be prepared to switch spools ...
I'm guessing it should be possible to integrate this via the GPIO board, but would probably need some firmware modification than the current API allows, let alone to get to see this in Prusa Connect?
any advice welcome,
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RE: Using GPIO for loadcell integration?
I'm using it but not with gpio - I just have a spool on the weight/load-cell hooked to esp32 and then via esphome to HomeAssistant and there calculate the amount of the filament left and can create a notification if 25g is left so it is time to prepare another spool.
But I really just try to fit the print into the remaining weight of the spool, without the need for a change.
With gpio you would need something like an esp32 to check load cell and if it is below certain trehshold then send the gpio pin level and react to the gpio level accordingly (send back message to PrusaConnect? how?)
but then... you got a filament runout sensor ...
See my GitHub and printables.com for some 3d stuff that you may like.
RE: Using GPIO for loadcell integration?
Yeah, my hope would have been to be able to use a set of GPIOs directly on the Load Cell, but that neither seems supported architecture-wise, nor supportible cycle-wise ...
RE: Using GPIO for loadcell integration?
You will need additional electronics in between to convert load cell signal into a binay form.
See my GitHub and printables.com for some 3d stuff that you may like.