So I have a 10KOhm thermistor, that I have in series with a 10KOhm 1% resistor. I have the datasheet which effectively states the the B_Constant is 3997 @ 1%. I have verified that the resistance on the thermistor is 10Kohm with my multimeter and also double checked the resistor I’m using to verify that its 10K Ohms.
I should be getting 25C at 10K ohms with this setup is my understanding but I am nowhere near that, at 22.7C I’m basically at 1965Ohms. (not to be confused with KOhms) So I’m very far off. This is how my YAML is configured currently:
sensor: - platform: ntc sensor: resistance_sensor calibration: b_constant: 3997 reference_temperature: 25°C reference_resistance: 10kOhm name: NTC Temperature B Constant - platform: resistance id: resistance_sensor sensor: source_sensor configuration: DOWNSTREAM resistor: 10kOhm name: Resistance Sensor - platform: adc id: source_sensor pin: A0 update_interval: 5s
I’m basically wired up like this, except i’m using 3.3V and A0 on an Amica NodeMCU ESP8266
Here’s the breadboard view (red/white wires are heading to the thermistor).
Any help is really appreciated.