I am counting the number of valve actuations to evaluate their lifetimes. For now just CO2 but O2 will come shortly.
Basically I just count the number of times the valves have toggled over a week:
digitalWrite(pinAssignment_Valve, HIGH);
this->valve_trigger_count++;
Interestingly I hear an audible "click" without seeing an increase in the valve_trigger_count. Looking at the logs I think it comes from:
// CO2 level above setpoint.
digitalWrite(pinAssignment_Valve, LOW); // just to make sure
...since the temperature is slightly above the setpoint when I hear the "click". I won't dig deeper until the test is finished (7days), but if the digitalWrite(pinAssignment_Valve, LOW) call indeed energizes the solenoid enough to hear a "click", this may contribute to premature failure.
I am counting the number of valve actuations to evaluate their lifetimes. For now just CO2 but O2 will come shortly.
Basically I just count the number of times the valves have toggled over a week:
digitalWrite(pinAssignment_Valve, HIGH);this->valve_trigger_count++;Interestingly I hear an audible "click" without seeing an increase in the
valve_trigger_count. Looking at the logs I think it comes from:// CO2 level above setpoint.digitalWrite(pinAssignment_Valve, LOW); // just to make sure...since the temperature is slightly above the setpoint when I hear the "click". I won't dig deeper until the test is finished (7days), but if the
digitalWrite(pinAssignment_Valve, LOW)call indeed energizes the solenoid enough to hear a "click", this may contribute to premature failure.