I'm working on a project where I need to monitor the bending stress in a square bar in real-time. I would like to measure the stress in 4 spots. I already have 10 strain gauges (Omega 120 ohms Item# SGD-1.5/120-LY43)
This is the set-up I am considering:
- 1/2 bridge circuit on a breadboard
- 74HC4067 Analog multiplexer to eliminate the need for multiple HX711 (will just have to switch between which sensor is being read instead of reading from all of them at once)
- HX711 & Arduino Uno
I'm fairly new to Arduinos and would appreciate any help or guidance. Does this set up seem feasible/compatible? Is there a preexisting code for the Arduino that you recommend?
Alternatively, would it be easier to read 2 measurements simultaneously than it would be to read 4 measurements one at a time through the multiplexer?