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Topic: Arduino Nano /w datalogger running 12v sensors (Read 84 times) previous topic - next topic

jonasss

Dear everyone 

I'm currently working on a project with two sensors and a pump which needs to log data onto a shield. One of the sensors required 12v. 
I'm using an Arduino Nano to reduce power consumption, compared to Uno.
I've found a tutorial for the nano datalogger shield (Data logger shield for Nano):

https://publiclab.org/notes/cfastie/04-30-2017/data-logger-shield-for-nano

Which runs on 3.3V. I can't seem to find any information, whether or not I can supply 12V to the screw terminals, which leads to VIN and GND, respectively. 
Or would it be possible to supply 12V to the nano, through VIN and GND and then just use the shield on top. 

Thanks in advance!
  

groundFungus

It would be better to supply the 12V to a DC-DC converter (buck converter) that outputs 3.3V and connect that to the 3.3V pin on the Nano.  That bypasses the weak on board regulator.

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