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Fermier

An open-source Ferminator clone. Controls temperature inside a fermentation chamber, for beer, cider, wine etc.

The name is a portmanteau of "fermentation" and "peltier". Based on a WEMOS Lolin32 board with Wi-Fi and BT connectivity. Software programmed in Arduino IDE.

Hardware features:

  • One Peltier element for heating and cooling
  • Two fans, one for circulating air inside chamber and other outside for cooling outside heatsink
  • Three Pt1000 thermistors, one for measuring inside heatsink temperature, one for measuring outside heatsink temperature and one that can be freely placed inside chamber
  • Status LEDs for indicating heating/cooling

Software features:

  • Control and check status over Wi-Fi
  • PID loop to control chamber temperature

Suggested external hardware:

  • 1 pc, TEC1-19906 24 volt Peltier element
  • 3 pcs, Pt1000 temperature sensors
  • 2 pcs, 24 volt fan, suitable size for heatsinks
  • 2 pcs, heatsink, dimensions roughly 200 x 50 mm (needs checking)