Programmable S2C TH : stabile vref 2500 at pin 14 / hardware circuit with precission resistances 7k5 and 15k that give us voltages at pin 17/18/20.
The resistance-measurements (avg of 10 adc-measurements) :
- 7k5 : 7382 / 7390 / 7374 ohm
- 15k : 14453 / 14467 ohm
Why this is so low and not closer to 7k5 and 15k?
If we measure the voltage on the xbee-pin (pin 17/18/20), we get voltage values that do corresponded to the 7k5 and 15k.
So, the voltage outside measured on the pins does not correspond exactly to the adc-value? it is approximately correct, but you should expect better. So, i think, maybe we do something wrong?