Let me preface this by saying I'm a total beginner to this. My area is Software, not usually electronics; and I haven't done any since I was in high school.
I've done a lot of reading about Wheatstone bridges in preparation for this, but I'm struggling to apply the diagrams to what I have in front of me.
I'm trying to follow this tutorial. In terms of the code side of it, I'm totally fine with what it does, how it calibrates the readings etc. My main problem is the actual scales part of it.
I have the I/O shield that they use in the example as well.
My main problem is the scales. I have a set of scales with 4 load cells in each corner. I have no idea where to start with wiring this up. I desoldered the cables from the board, which also handled the power supply, as I figured I would need to rewire a lot of it.
The tutorial itself isn't very clear as it refers to a certain scale, which I can't get in the UK.
Each load cell has 3 cables coming from it: a red, black and white.
My basic questions:
- How would I go about wiring this into a Wheatstone Bridge?
- Where would I then connect the battery back to the cables?
- How can I determine what the individual cables actually do?
If I need to provide any more information, I'll do my best to reply with what you need. Thank you in advance