MasterBrew Coffee maker controller

Votes: 17
Views: 4390

MasterBrew coffeemaker controller offers advanced brewing features not available today. The controller uses a single micro-controller that directly drives a 1/3 bias, 4-backplane, 8-segment, LCD display. It has multiplexed push-button operation, three LED indicators, an audio annunciator, and relay control output. It offers the following features: selectable brew strengths; clean cycle detection; automatic self-cleaning cycle with auto-shut-off; selectable keep-warm auto shut-off times; selectable coffee keep-warm temperature from room temp to thermostat temp; works with existing thermostatic switch control; stores all user settings in non-volatile memory; 12 or 24 hour time format; very low manufacturing cost; can be added to any exiting coffeemaker. User interface shows all settings on LCD display. Two versions can be made for external (plug existing coffeemaker into unit that is plugged into wall), or internal (in product) use. Estimated manufactured cost is below five dollars.


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  • Name:
    Ron Hoffman
  • Type of entry:
  • Profession:
  • Number of times previously entering contest:
  • Ron's favorite design and analysis tools:
    MPLAB CircuitMaker 2000
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  • Ron's hobbies and activities:
    Play and teach guitar, carpentry, tennis
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  • Ron is inspired by:
    Practical solutions that aren't offered by existing products. Making things better than products that exist.
  • Software used for this entry:
    MPLAB, CircuitMaker2000
  • Patent status: