with covid and quarantine thought some of you might find some interest in
some homebrew DYI projects
check out Fermentrack (free) runs on a raspberry pi similar to a brew pi but much easier and cheaper.
you can have several fermentation chambers going at one time with a NODMCU
these are cheap.
then
check out Brewfather app it is cloud based and runs on all platforms
free to use for 10 recipes/or batch
onsale now for 14.99 for the year.
best thing is you can have you temps uploaded to Brewfather app into your current batch while it is fermenting.
i have been using this for my last couple of batches now
work pretty good.
you can also use a digital hydrometer and have it upload specific gravity readings.
Ispendel tilt
Paul.