Hey guys! I have been having a problem with my Arduino NANO RP2040 by trying to connect a 200PSI Pressure Transducer that works from 0.5V to 4.5V. The problem is that I am reading 200PSI when the sensor is being supplied with 3V. When I try to check the signal by itself, at 3.9V it's giving me an ADC Value of 1023 which it would be the maximum which I do not understand because it should give me that value when I supply 5V, not 3.9V. Do you have any idea about how to fix this problem?
Which sensor (web link), and can it be powered with 3.3volt.
The RP2040 is a 3.3volt-logic processor.
The inputs can be destroyed with 5volt signals.
Don't put more than 3.3volt on a pin (maybe already too late).
A 5volt ratiometric sensor is a poor match for a 3.3volt processor.
Even if you bring down it's output to 3.3volt with a voltage divider, then you still have the problem that sensor readings also depend on supply voltage variations.
Leo..
Take a look at About Nano boards with disabled 5 V pins & Can I use a 3.3 V rated sensor with a 5 V operating board?
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