Arduino 5v components to esp32 3.3v

[alexzarp]

I developed a project in the past with Arduino, currently it has been migrated to esp32. Components like ZMPT101B* work with 5v, but the esp32 with 3.3v. How can I use it without risks together with esp? Can I connect the voltmeter* power to the VIN pin (being powered by a 5v source) and without any problems pass the data pin (which I imagine also returns a 5v voltage) to the esp without causing damage? If it causes damage, I need ideas on how to do this risk-free adaptation, as I aim to reuse components.

[srnet]

Try a Google search on;

arduino logic level converters

[gilshultz]

HCT logic works great for me and it is not expensive.

[johnerrington]

I suggest you

provide links to the parts you will be using

and a schematic

How to make a schematic you can post.

When you submit a question on the forum you will usually need to add a schematic (circuit diagram). The tutorial that follows will explain some ways to create a useful image; however lets start by explaining how to add the image to your post. Its easy. Having created the image all you need to do is : Save the image somewhere convenient - maybe your desktop Start your post, and place the cursor (insertion point) where you want the image to be shown; [upload image to forum] 3: click th…

[Deva_Rishi]

@gilshultz

HCT logic works great for me and it is not expensive.

for 3.3v to 5v that should work, but the issue is obviously more for 5v to 3.3v

[gilshultz]

I use resistor(s) or a 74C914 or equivalent.

[Deva_Rishi]

I use resistors, there is some speed limitation there,