Question about sampling

[leonardo979]

Hi,
I'm doing something similar on nodeMCU and Maverick ET-73 probe.
Only 1 probe and sampling for now.
I used same resistor 22kOhm, and same coefficient and approach, but i'm struggling on scale resistor probe and coefficients...

Can you clarify why here:
SumTemp += (int) (maverick_temp((ads1015.readADC_SingleEnded(analogpin) * 0.003 / voltage) * 1023));

you adjust reading with ... * 0.003 / voltage) * 1023)
instead of go directly the analogpin read value? In the end having 3.3v it's adjusted of 0,93 but i don't understand why.

thanks

[NicoDupont]

Hi,
If I remember, it's because of the gain with the ads1015.
https://learn.adafruit.com/adafruit-4-channel-adc-breakouts?view=all
1bit = 3mv by default.
I do that to not change the maverick_temp function.
It can be improved ?