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Frequently asked question (FAQ)

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¡UPDATE 18042022!

Is the pHMeter rebooting?​

In case the lower priority process can not be reached during 8s, the bioreactor will restart automatically. This lower priority process is the one that takes care of blinking the led.

Using the command p you will get the uptime in milliseconds.

In the case of reboot there is also an entry in the log.

What is the state of the pHMeter?​

The command t will give you a good overview about the current state of the bioreactor

Status: 519 - What is the current status

  • 0: 1 - agitation control
  • 1: 1 - food control
  • 2: 1 - heating
  • 7: 0 - sedimentation
  • 8: 0 - filling pump
  • 9: 1 - emptying pump

Enabled: 7 - What is currently enabled

  • 0: 1 - agitation control
  • 1: 1 - food control
  • 2: 1 - heating

Error: 0 - What are the current errors

  • 0: 0 - pcb probe failed (one wire not answering)
  • 1: 0 - liquid probe failed (one wire not answering)
  • 2: 0 - temperature of pcb is outside range
  • 3: 0 - temperature of liquid is outside range
  • 4: 0 - target temperature is outside range
  • 5: 0 - weight is outside range

What is a cycle ?​

The bioreactor has 4 different phases :

ModeHeatingStepperTill when it last
Normal modeOnOnLast PARAM_FILLED_TIME minutes
Sedimentation modeOffOffLast PARAM_SEDIMENTATION_TIME minutes
Pumping outOffOffLast till PARAM_WEIGHT_MIN is reached
Pumping inOnOnLast till PARAM_WEIGHT_MAX is reached