/diy/ - Do It Yourself

>>2787430
Most of that is a little above my level, but I understand your points. Due to this I'd lean toward prebuilt board as the comparator part. I guess that was a big part of my original post: how do the companies building strain gauges into their systems do it? Separate PCB between bed and mobo? or is there some other way?

>>2787432
except that this is exactly how strain gauges usually get used on bed setups....

I was thinking along the lines of what >>2787430
saId: re attaching them to the plate that holds the bed plate on my i3. But I recently switched to silicone cylindert to hold the bed up, and it occurs to me that as a simple test I could just kapton tape the sensors to the cylinders.
I'm pretty sure that would work nicely.
If not then tape or 2part epoxy to the bed-support plate.

>>2787458
slice it off, tell noone

>>2787692
nice
i dont think id like my daily driver printer to have that bigass lever bumping over globby prints, but as a mad science printer thats very cool.
I actually bought the small pads becasue i could see the full size strain bar being difficult to place and use in 'production' situations.
As above; i think they could be simply stuck on, even to relatively flexible locations/things, to find out where a good place to put them (in a more robust form) would be.
But just like when i got fixated on piezos as sensors; the real issue is modularizing the sensor so that it is practical, and easily implemented, the harder part is often in designing circuitry that has the correct range and adjustability to trigger at the right threshold. ... where that threshold can vary a lot with different use-cases (bed support/above nozzle/gantry supports/etc).

image only vaguely related: piezo