Oh God, now that it works, the system tells me i weigh 72.706645304036kg
I've put on weight!
Oh God, now that it works, the system tells me i weigh 72.706645304036kg
I've put on weight!
"And, look, the luscious and fecund fronds of the Silver Fern has given brilliant birth to a stupendous fruit! A red Hondaberry, desposited by a lesser known species of Plonker Gittus Maximus Idiotus."
I'm the retarded question writer.
Measuring the milli volt output of a loadcell. machine reads inputs in range of +/-150mV, outputs it over ethernet as a big endian 2 word somethingarather. (in the range of 0-65535).
Once i scale in a linear fashion from 0-65535, I have the mV reading, which I can then divide by 2mV per V of excitation voltage(15v) at 100kg.
Err..
I think.
"And, look, the luscious and fecund fronds of the Silver Fern has given brilliant birth to a stupendous fruit! A red Hondaberry, desposited by a lesser known species of Plonker Gittus Maximus Idiotus."
Remember Joachim's razor boys...
. “No pleasure is worth giving up for two more years in a rest home.” Kingsley Amis
And I to my motorcycle parked like the soul of the junkyard. Restored, a bicycle fleshed with power, and tore off. Up Highway 106 continually drunk on the wind in my mouth. Wringing the handlebar for speed, wild to be wreckage forever.
- James Dickey, Cherrylog Road.
It would be 11.705 if your range had 300 integer values in it, but it doesn't. It has 301. -150 to 150 includes zero.
So you need to divide 301 by 65536, not 300, and the answer is 12.24.
Unsurprisingly, 'off by one' errors happen a lot in computer programs.
Did you actually read my initial post?
kiwibiker is full of love, an disrespect.
- mikey
I said i believed it to be 11.707 as thats what the manufacturers software measured it as - I'd be surprised if they got the maths wrong somehow, its an industrial automation product, used to run factory's and so on.
No, Why? Did it say something useful?
p/t. yes i read it. It said : "That question doesn't make any sense."
"And, look, the luscious and fecund fronds of the Silver Fern has given brilliant birth to a stupendous fruit! A red Hondaberry, desposited by a lesser known species of Plonker Gittus Maximus Idiotus."
Don't ever assume that the manufacturer's software was written by someone smarter than you. In my experience, it usually isn't.
If the specs really are as you describe, then the manufacturer's software has that exact off-by-one error in its logic and is giving incorrect output.
Always check actual physical measurements with separate calibrated equipment.
Come to think of it, I should've just left my contribution to the thread at that.
kiwibiker is full of love, an disrespect.
- mikey
"And, look, the luscious and fecund fronds of the Silver Fern has given brilliant birth to a stupendous fruit! A red Hondaberry, desposited by a lesser known species of Plonker Gittus Maximus Idiotus."
After 10 pages could someone please be courteous enough to summarise the problem and answer to it![]()
How linear is the output of the strain gauge of the weigh cell.
Also depends on the accuracy of the analogue input card, and whether the A to D converter has span and zero correction or a fixed constant as a correction.
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