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doser

An pH dosing controller program for Arduino. For use in hydroponic applications where pH tends to drift in one direction over time. This software runs on a LeoPhi microcontroller, utilizing a probe for pH readings and a relay to activate a device to adjust pH up or down.

Features

  • Simple one-button human user interface
  • Simple display
  • 2 point calibration
  • Auto, manual, and read-only modes
  • Setpoint & hysteresis

TODO

  • Stub out one-button menu
  • Startup screen w/ version
  • LED feedback
  • Integrate 7-segment display
  • Integrate doser relay
  • Integrate LeoPhi
  • Display pH readings
  • Auto dosing w/ PID and/or hysteresis