Design Review 2: March 7th
Agenda:
- Attendance
- Meeting Leader: Richard McManus
- Minutes: Michael Slusarczyk
- Sensing Demonstrations
- Cup Height Detection
- Liquid Height Detection
- Coffee Pour Control Demonstration
- Keurig controlled by ESP32 Kit Board
- Preliminary Board Design
- ESP32S3
- Sensor integration
- Keurig Control (IO)
- UI (TFT LCD (SPI) and Rotary Encoder (IO))
- Design Review 3 Plans
- Create physical housing to attach to Keurig:
- House electronics inside
- Extend reservoir to increase capacity
- Allows for multiple brew cycles without refilling
- Integrate all subsystems physically and in firmware
Appendix:
- Keurig Control IO
Pinout | ||
Cable | Wire | USE |
Blue | Red | NEG_POWER |
Blue | Yellow | POS_POWER (3.3V) |
Blue | White | POS_STRONG (3.3V) |
Blue | Black | NEG_STRONG |
Black | Red | NEG_LED |
Black | Yellow | POS_LED (12.0V) (Fried) |
Black | White | POS_BREW (3.3V) |
Black | Black | NEG_BREW |
SCOTCH | Red | NEG_RES_SENSE |
SCOTCH | Yellow | POS_RES_SENSE (3.3V) |
SCOTCH | White | POS_HEAT_SENSE (3.3V) |
SCOTCH | Black | NEG_HEAT_SENSE |
Checkered | Red | NEG_LIM_SWITCH |
Checkered | Yellow | POS_LIM_SWITCH (3.3V) |