I measured the voltages on the real circuit and, with 12.7V input, the (36k+6.2k) divider makes it 1.588V ! Which results in a 8x div ratio, not 6.8x as I set it. And that can only happen if it's a 30k resistor in paralel with my 6.2k...
Should I leave it like this and adjust the divider ratio in software ?
Can I count on the fact that the value of divider ratio will always remain the same ?
Is my Pico broken if its ADC has 30k impedance instead a 100k datasheet minimum, or it can happen ?
Should I leave it like this and adjust the divider ratio in software ?
Can I count on the fact that the value of divider ratio will always remain the same ?
Is my Pico broken if its ADC has 30k impedance instead a 100k datasheet minimum, or it can happen ?
Statistics: Posted by Marus780 — Sat Mar 09, 2024 12:15 am