Strain Gauge End Stop Design Review
Автор: cubedude76
Загружено: 2024-01-06
Просмотров: 433
Описание:
This is a review of my design for a strain gauge end stop.
See this forum post:
https://klipper.discourse.group/t/load-cel...
I made my own PCB with a quarter Wheatstone bridge circuit and an ATTiny85 chip to process the signal and raise an output pin high when the signal is detected. I super glued the strain gauge to a 3D printed adapter which has two blade flexures which are 1.5mm thick. I then coated the strain gauge with two layers of a brush on silicone conformal coating to help protect it since the strain gauge is very fragile. The repeatability is decent at this slow probe speed around 0.04mm from lowest to highest reading.
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