Getting 5V from USB on Mbili

Mbili
1

Hello there,

I would like to use a shield that commubicates via i2c so 3.3v is ok, but it also has some isolated DC/DC converter that needs 5v…

i have looked at the schematics but found no “elegant way” of getting 5v from USB :wink:

any idea ?

Regards

Laurent

2

Hi Laurent,

Unfortunately, there’s not a elegant way of getting the 5V of the Mbili directly. You can ‘tap’ the 5V by, for example, soldering a cable to one of the pins of the slide switch (but this is a bit ‘hacky’).

Could you share which shield you are using and how you are connecting this to the Mbili?

3

Hello Gregory, thanks for answering.

today i’m stealing 5V from one pin of the USB connector.

here is the detail of the shield and the reason why i need 5V

https://www.whiteboxes.ch/docs/tentacle/t2/#/power?id=two-power-rails
https://www.whiteboxes.ch/docs/tentacle/t2/#/faq?id=can-i-use-the-tentacle-mini-with-another-microcontroller-not-arduino

Regards

Laurent