5V and 3.3V devices at the same time

Posted on Sun 13th, April 2014

• #1

graf

Hello, from other posts on this forum I already know that I can power 5V devices simply by connecting them to the VBat (in particular I'm thinking about relay module).

Can I use some 3.3V sensors with Espruino at the same time? And should they be connected to a separate GND line?
• #2

Gordon

Yes, you can use both - there shouldn't be any need for a separate ground line at all.
• #3

graf

Cool, thanks

Post a reply
- Bold
- Italics
- Link
- Image
- List
- Quote
- code
- Preview
Formatting Help

Don't worry about formatting, just type in the text and we'll take care of making sense of it. We will auto-convert links, and if you put asterisks around words we will make them bold.

Tips:

Create headers by underlining text with ==== or ----

To *italicise* text put one asterisk each side of the word

To **bold** text put two asterisks each side of the word

Embed images by entering:
![](https://www.google.co.uk/images/srpr/logo4w.png)
That's the hard one: exclamation, square brackets and then the URL to the image in brackets.

* Create lists by starting lines with asterisks

1. Create numbered lists by starting lines with a number and a dot

> Quote text by starting lines with >

Mention another user by @username

For syntax highlighting, surround the code block with three backticks:

```
Your code goes here
```
Just like Github, a blank line must precede a code block.

If you upload more than 5 files we will display all attachments as thumbnails.

For a full reference visit the Markdown syntax.