How often should I calibrate the pill? I've done a bunch of medium gravity beers and it was pretty accurate up until now. However, I just brewed a 1.080 OG, but the pill only read 1.060 when I dropped it into the fermenter.
If you use wireless charging then you pretty much will never have to calibrate again. If however you are often opening and closing the casing to charge the battery then I would calibrate every use.
When you did the initial calibration did you calibrate at 1.080? It's always best to calibrate at water being point 1 and then use the highest gravity you are likely to use being point 2.