OpenScale question

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fmr300
Posts: 6
Joined: Sun Dec 20, 2009 8:56 am

OpenScale question

Post by fmr300 » Sun Jan 13, 2019 5:26 pm

I'm waiting on the load cells to arrive, so just did a simple experiment on the OpenScale, and it has me perplexed. Thought one of you may be able to help:

I put two series 1K resistors between E+ / E- , then tied their midpoint to A+ / A- . This sims the loadcell's outputs being perfectly balanced with no load.

But OpenScale is outputting < -8000 lbs. This makes no sense to me. I'm using the default values in OpenScale (reset them just to be sure). Listed below, you can see that there is a huge tare value as a default. Is this reasonable?

So I did a 'Tare scale to zero' and it decided that the tare value should be -1853, and then started reporting about -1.9 lbs.... why not 0 ?

Does any of this make sense? Seems most of the forum commentary is people having problems. Starting to think the OpenScale's firmware has issues.....

RESET DEFAULT values produced -8000 lbs
1) Tare scale to zero [8647409]
2) Calibrate scale [1000]
then
TARE TO 0 values produced -1.9 lbs
1) Tare scale to zero [-1853]
2) Calibrate scale [1000]
Attachments
OpenScalePic.jpg

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