Quote:
Originally Posted by SeeThruHead
the sensor will output a specific voltage
you can connect a relay that will activate at a specific voltage off of the sensor circuit.
use something like this to control the pump (comparator relay control circuit)
LM393 DC 12V 2Bit Voltage Comparator Relay Control Circuit Module
compare a reference voltage vs the voltage reading from the sensor. if the sensor is higher, relay turns on the pump
when the voltage drops because temps drop the relay turns off.
EDIT:
that board is overkill for you use case, you could probably create this circuit from scratch, but I'm not good enough with this electrical stuff to know how. |
Quote:
Originally Posted by SeeThruHead
the sensor will output a specific voltage
you can connect a relay that will activate at a specific voltage off of the sensor circuit.
use something like this to control the pump (comparator relay control circuit)
LM393 DC 12V 2Bit Voltage Comparator Relay Control Circuit Module
compare a reference voltage vs the voltage reading from the sensor. if the sensor is higher, relay turns on the pump
when the voltage drops because temps drop the relay turns off.
EDIT:
that board is overkill for you use case, you could probably create this circuit from scratch, but I'm not good enough with this electrical stuff to know how. |
This seems like a pretty cheap/easy solution but am I stupid to think that with this board paired with a diff temp sensor, you’re not going to actually know what temp the relay is activating at? There’d have to be some controlled calibration off-car before install.. am I right?
Sent from my iPhone using Tapatalk