I have connected 100k NTC with 100K PU resistance. ADC is measuring voltage on NTC is 1580 mV. While multimeter shows 1410 mV. 1410mV is correct number as it gives 32 degC temperature.
I am using ADC in polling mode. I added HAL_ADCEx_Calibration_Start also and ADC measurement changes to 1650 mV.
please suggest on how to remove error.
Solved! Go to Solution.
With a high impedance source, increasing the sampling time to max is going to have the largest effect.
Many more general suggestions can be found in: