Iawia
Member
Hi All,
Just have a question on a S strain gauge I am trying to wire up. It has a small board attached to it (strain3.jpg). I cant find any datasheet on it, except the silly paper that came with it (strain2.jpg). The sheet says 'Excitation+-' and 'Signal+-' which are not amazing labels for electronics. I am going to assume the signal+- label is a differential which I will use to compute the load? I was going to read these using a voltmeter for testing, then use a microcontroller once I know the max voltage output.
To make things a little more confusing there is a 5th wire hanging off the cable bundle which is not connected to the little board this gauge comes with. is this the shield or to power up the gauge? I tried to apply 3.3v to the Vcc with the GND wire grounded then tried to read the differential. It reads 0.8v and when I load the gauge the value doesn't change. Slightly frustrated, I tried my luck with 5v at risk of breaking something, and still the same.
Any pointers on this I would greatly appreciate! Thanks, guys.
-t
Just have a question on a S strain gauge I am trying to wire up. It has a small board attached to it (strain3.jpg). I cant find any datasheet on it, except the silly paper that came with it (strain2.jpg). The sheet says 'Excitation+-' and 'Signal+-' which are not amazing labels for electronics. I am going to assume the signal+- label is a differential which I will use to compute the load? I was going to read these using a voltmeter for testing, then use a microcontroller once I know the max voltage output.
To make things a little more confusing there is a 5th wire hanging off the cable bundle which is not connected to the little board this gauge comes with. is this the shield or to power up the gauge? I tried to apply 3.3v to the Vcc with the GND wire grounded then tried to read the differential. It reads 0.8v and when I load the gauge the value doesn't change. Slightly frustrated, I tried my luck with 5v at risk of breaking something, and still the same.
Any pointers on this I would greatly appreciate! Thanks, guys.
-t