Hi John,
The steel fermenter is a faraday cage so your bluetooth signal will pretty much not get out of the fermenter…
You’re solution is to get a bluetooth dongle inside the fermenter… not on top. it has to get inside.
There is a chance it’d also still have issues inside there.
A simpler solution may be to bring the brew out into a little side tank made of polypropylene, through a drain port or other connection that the TILT lives in. This side tank will let the signal pass to your phone. I’m thinking of a bottle or something with its own air lock on top.
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