Battery powered thermostat
Posted: Thu Apr 12, 2018 9:41 amHi!
I try to run an ESP12 from battery and use it as a thermostat. I try to read a thermistor thru ADC. The problem is, that ADC operate between 0V and 1V. But the thermistor is running from battery power. As the battery load decrease, also the voltage go down. As I see ADV value depends on battery load.
Is there a possibility to correct this? I will try to stabilize the power with a Zener. Can this work? Or have you other idea? The goal is to minimize power consumption. (Thermistor is powered from GPIO and is only powered during measurement).
Thanks,
Tamás
I try to run an ESP12 from battery and use it as a thermostat. I try to read a thermistor thru ADC. The problem is, that ADC operate between 0V and 1V. But the thermistor is running from battery power. As the battery load decrease, also the voltage go down. As I see ADV value depends on battery load.
Is there a possibility to correct this? I will try to stabilize the power with a Zener. Can this work? Or have you other idea? The goal is to minimize power consumption. (Thermistor is powered from GPIO and is only powered during measurement).
Thanks,
Tamás