Stainless Lobster Fridge Optimizer - Serial Connection

Current Values

Every 60 seconds the fridge optimizer controller will write to the usb/serial port (/dev/tty.wchusbserial1410) at 115200 a string of comma seperated numerical values. The string starts with "Output: " Example of full string: "Output: 0,0,0,0,nan,78.80,nan,39.00,5.00,F,0.02"

Values

1. compressorStatus: Compressor status - Is the compressor running.
   • 0 = Not running
   • 1 = Running at min RPM
   • 2 = Running at max RPM
2. defrostStatus: Defrost mode status - Is the system defrosting.
   • 0 = not in defrost mode
   • 1 = Defrosting
3. boxFan: Fridge Fan status - Is the fan running inside the box.
   • 0 = Not running
   • 1 = Running
4. compressorFan: Room Room Fan status - Is the fan running in the compressor room.
   • 0 = Not running
   • 1 = Running
5. boxTemp: Box temp - Measured on fan enclosure. Localized (F/C). Float value with two digits or "nan" if no sensor is present. Example: 39.05
6. controllerTemp: Ambient temp - Temperature of the head unit. Localized (F/C). Float value with two digits or "nan" if no sensor is present. Measured in the head unit enclosure. Example: 75.72.
7. boxHumidity: Box relative humidity - Relative humidity percentage. Measured on fan enclosure. Float value representing relative humidity in percent. Example: 55.72.
8. controllerHumidity: Ambient relative humidity - Relative humidity percentage. Measured in the head unit enclosure. Float value representing relative humidity in percent. Example: 73.21.
9. compressorVolts: System Voltage - Voltage measured at head unit.
10. tempScale: Temperature Scale - Temp values are sent in F or C based on choice user selected in setup. This tells us scale is currently being used.
11. compressorAmps: Compressor Amps - Number of amps being consumed by the compressor.

Possible Json Format

{
  box: {
    fan: true,
    temp: -6.61,
    humidity: 40,
  },
  compressor: {
    running: true,
    resistor: 700,
    volts: 12.4,
    amps: 5.6
  },
  controller: {
    temp: 26.67,
    humidity: 70,
  }
}

SignalK Output

Need some mapping of fields to SK paths.