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iSpindel - digital WiFi hydrometer

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Hanglow

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Ubidots has now changed my graph, for no reason, to 2 decimal places for gravity. So it reads 1.04 then 1.03 etc. Even though i have set set it to 3. Which is really annoying and also useless to me. It is also ******* up the dots out again, I checked the gravity once yesterday and checked the usage and it was at 30k for that day.
 

lupinehorror

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Ubidots has now changed my graph, for no reason, to 2 decimal places for gravity. So it reads 1.04 then 1.03 etc. Even though i have set set it to 3. Which is really annoying and also useless to me. It is also ******* up the dots out again, I checked the gravity once yesterday and checked the usage and it was at 30k for that day.
i've fully converted to fermentrack but found brewspy very good also. left ubidots after my first brew with the ispindel
 

Cheyne_brewer

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iSpindel noob question - I've calibrated down from 1080 to 1010 and 1000, input in the calibration spreadsheet and got my polynomial equations. What do I now do with these? Any suggestions of a biologically awkward nature will be ignored ;-)

At the moment I have it linked into Ubidots & trying to get Brewspy to run in an Android container on my Linux laptop.
 

Harry Bloomfield

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iSpindel noob question - I've calibrated down from 1080 to 1010 and 1000, input in the calibration spreadsheet and got my polynomial equations. What do I now do with these?
You copy and paste the equation into the iSpindle Polynomial line, on the configuration page, when the iSpindel is in Acees Point mode. I understand, you could alternatively enter it into BrewSpy, but I never have delved into doing this.
 

Cheyne_brewer

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Thanks Harry - there are so many articles on the iSpindel to wade through, some very learned indeed. Maths was never my favourite subject. How the heck anyone came up with the wizardry behind it all I don't know! I've worked in IT for well over 30 years but never on the coding side. Thank goodness for peer support :-D
 

Cheyne_brewer

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so - the config page in the iSpindel gives a single polynomial : -0.00031*tilt^2+0.557*tilt-14.054

and my calibration curve gives the following :

Degree 1: 0.95486621027101 + 0.0016897049251946381 *tilt
Degree 2: 0.969551631407424 + 0.0010366004275347348 *tilt + 0.0000065902094028382476 *tilt*tilt
Degree 3: 0.8984517760982478 + 0.0058751729418038195 *tilt-0.00009715117326945046 *tilt*tilt + 7.050717243120776e-7 *tilt*tilt*tilt

So what value to I use to over-write the calibration value in the iSpindel? Sorry if I come across as a numpty :(
 

kelper

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Just use the degree three one as it will be more accurate.

0.8984517760982478 + 0.0058751729418038195 *tilt-0.00009715117326945046 *tilt*tilt + 7.050717243120776e-7 *tilt*tilt*tilt
 

Cheyne_brewer

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Just use the degree three one as it will be more accurate.

0.8984517760982478 + 0.0058751729418038195 *tilt-0.00009715117326945046 *tilt*tilt + 7.050717243120776e-7 *tilt*tilt*tilt
Thanks Kelper. I'll go through all this and find the wifi doesn't work in my garage...
 
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