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black is my attempt at a straight line.... follows actual times fairly close enough to actual exact times. It is just adding and subtracting X minutes each day for 1/2 a year then switching the...
amgen Yesterday, 12:22The Vdd that resistors are connected to, is the exact same point that PIC Vdd pin is connected also?
Ioannis
Based on the fact that you are using Power Supply as a reference voltage for the ADC:
1. the Power Supply noise is random and in the length of time it would have very minimal effect on the adc...
table example here ... https://www.suntoday.org/sunrise-sunset/2024.html
Alain
the first step is to measure the noise on the power rail and then to determine if that's an issue, there is no point adding a regulator for the pots if the adc pos reference is noisy
richard Yesterday, 05:30I use a DC-DC converter to lower 12V down to 5V for the entire circuit.
Would a dedicated 7805 for the pots be a "meaningful" improvement?
I'll have up to 10 pots in the final circuit. Right...
50mV of noise on the power supply would do that.
using FVR as adc ref might help a little and or a better regulator for the pots
Depending on your application, the approach you take to solve your problem could differ.
For a changeable lattitude, longitude, Height above sea level, DST the calculation is not trivial. The...
16F18877
- Using fixed input on ADC pin (1K to VDD, 1K to VSS - simulating pot at 50%)
- The ADC will drift from 498 to 509.
HSEROUTs on Serial Communicator:
Is there anything in the...
Re: How can I reduce ADC drift
Yes, it is.
Demon Today, 00:02