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Here is the configuration. At the moment I'm trying to get it to talk to the Grainfather (another problem...) but it will talk to Ubidots when I configure it for that.

Ubidots just gives the parameter as 'Gravity' so I'm not sure if it means Plato or OG

Yep, followed the calibration procedure. Made up a sugar solution and brought it back to room temp, used room temp water to dilute it to get the OG reading.

There is a screen shot of my result above. You'll have to excuse me, I didn't realise the other posts were questions. I'm not sure how to answer them.

Lovely. Thanks. I've put the results in and I'm getting a third-order polynomial. Ubidots is reporting 'Gravity' as 0.14 in water, I presume that is the Plato Value not the S.G.?

Google Sheets doesn't seem to support the Macro. I've tried putting the results in but the formula doesn't change.

Hi, I'm hoping someone can help me with the Plato Formula. I don't have a full MS Excel copy so can't get the macro to work. Could someone plug the following measurements in and post the formula? S.G. Tilt 1.000...

Nice. I've been looking at getting into AG and this looks like an excellent way to start. Cheers.

Just to drag this thread back from the grave.... Can you add Yeast Nutrient once the fermentation has got under way? Ta, Mike