Sensor Calibration


#1

Does the current openag_brain v2.1 contain a way to perform sensor calibration? I’m wondering how people currently calibrate their pH and electrical conductivity sensors. I don’t think it’s wise to take the sensor outputs at face value without calibration.


#2

HI Ekoziol,

The Arduiono code in the V2.1 brain does contain code that supports sensor calibration for the Atlas PH and EC sensors.


#3

@ferguman Do you happen to have a link to the protocol or the command that you need to run to perform calibration?


#4

Hi,

The Atlas PH Calibration instructions are located here:

The open ag firmware for the PH sensor is located here:

I don’t know how the openag group calibrates their sensors. I would think they do it outside of the Food Computer using direct connection of their sensors to the laptops running Arduino sketches.

I’ve forked the Open Ag firmware and added a serial monitor that allows the potential for sensor calibration without needing to disconnect the sensors from the Food Computer or write any Arduino code. The code will be at https://github.com/ferguman/openag-firmware when done. Currently the code doesn’t have a means to calibrate sensors. I will try to get some time to add that in the next month or so.