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sleep mode for soil watch 10

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javierb:
Hi Piotr!
So I have two options to solve this, right?
- If I use a 5v arduino I can connect directly to the pin without worrying about the voltage drop,
- But if i want to use a 3.3 volt arduino, i must use transistors to drive the sensor.
It is correct?
Thanks!

pinolec:

--- Quote from: javierb on June 15, 2020, 07:48:03 AM ---Hi Piotr!
So I have two options to solve this, right?
- If I use a 5v arduino I can connect directly to the pin without worrying about the voltage drop,
- But if i want to use a 3.3 volt arduino, i must use transistors to drive the sensor.
It is correct?
Thanks!

--- End quote ---

This is correct.
The first option is not pretty but it will work. Just make sure you do not overload the microcontroller and stay below the maximum current per pin and for the whole microcontroller.
The second option is my favourite. :)

Kind regards,
Piotr

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