+- Smart Home Automation Forum (https://www.kincony.com/forum)
+-- Forum: Technical Support (https://www.kincony.com/forum/forumdisplay.php?fid=1)
+--- Forum: KC868-HxB series Smart Controller (https://www.kincony.com/forum/forumdisplay.php?fid=2)
+--- Thread: NTC Thermistor with KC868-COLB (/showthread.php?tid=313)
NTC Thermistor with KC868-COLB - ahcdias - 06-23-2021
I'm testing a NTC Thermistor with analog input of COLB.
An NTC 103AT in series with a 10k resistor.
Both connected to +5V and input A1.
The voltage measured at input A1 is different from the calculated one (VA1 = 10k x 5/(RThermistor + 10k).
It seems that the A1 input impedance is low and influences the circuit.
Can you help me with that?
Thanks!
RE: NTC Thermistor with KC868-COLB - admin - 06-23-2021
can you take a photo of your wire. you can draw on a paper.
RE: NTC Thermistor with KC868-COLB - ahcdias - 06-23-2021
photo attached
RE: NTC Thermistor with KC868-COLB - admin - 06-24-2021
you need NTC adapter board convert to 0-5V, like this , i found in amazon:
https://www.amazon.com/thermistor-voltage-linear-conversion-transmitter/dp/B01N7FK3JG
also there are many adapters can be chosed.