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.

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

• 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