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Yakima 728
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  1. M

    iSpindle - DIY Electronic Hydrometer

    The bare ESP-12F (without the WeMos board) is 16mm wide. The real limiting factor is the 18650 battery, which is 18mm, IIRC. I think that, with a custom designed carrier board, fitting everything in a diameter of 28mm should be doable. The problem I've had is finding a source for the appropriate...
  2. M

    iSpindle - DIY Electronic Hydrometer

    Has anyone had any success sourcing a vial/tube that would fit in a standard glass carboy neck? I've measured my carboys, and it seems as though a tube with a total OD (with cap) of less than 28mm ought to fit. I roughly figured that would come to about 20mm ID on a tube with similar wall and...
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