Applying power to USB and Vin at the same time

Posted on Tue 20th, March 2018

• #1

BootySnorkeler

Hey guys,
What happens if I have a battery connected to the Vin and GND of my Espruino Pico and then connect it to a USB port? Will I burn my Pico, or is it safe to do so?

Thanks!
• #2

Gordon

Yes, it's totally fine, see: http://www.espruino.com/Pico#battery

It's got circuitry in there to safely switch between USB power or battery power as needed - just make sure you don't put too high a voltage on it, but if you're anything below 10v you're totally safe.

It's the same on both on the Pico and Original Espruino. The Espruino WiFi doesn't have any battery switchover circuitry though.
• #3

BootySnorkeler

That's awesome! It's amazing how much effort and dedication you put into each and every board...
Cool how the Espruino Pico has everything from native USB to battery switchover to a button and two LEDs, it's mind blowing.
• #4

Gordon

Thanks! If you don't mind posting it'd be great to see what you do with it when it's all wired up :)

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.