BBB gpio inputs from 3V3 power

[NAGABHOOSHANAM VEMULA]

Hi,

I am new to BBB world, excuse me if my questions are crazy

I understand the BBB gpio inputs are designed  for 3V3 supply (except few Analogue inputs with 1.8V)

What will happen if i connect to 5V  by accidental, a gpio_input to 5Volts through a 1K resister, ,   () 5v<--/\/\/\/\/\/-> gpio-input

Thanks and regards,

Nagabhooshanam Vemula

email :  nagabhoo...@gmail.com

+91 83741 82839- HYD

[evilwulfie]

BOOM

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[Robert Nelson]

On Mon, Aug 17, 2020 at 3:09 AM NAGABHOOSHANAM VEMULA
<nagabhoo...@gmail.com> wrote:
>
> Hi,
> I am new to BBB world, excuse me if my questions are crazy
> I understand the BBB gpio inputs are designed for 3V3 supply (except few Analogue inputs with 1.8V)
>
> What will happen if i connect to 5V by accidental, a gpio_input to 5Volts through a 1K resister, , () 5v<--/\/\/\/\/\/-> gpio-input

It's damaged, while some parts may 'work' eventually, it'll completely fry..

https://www.sparkfun.com/products/retired/10622

Regards,

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Robert Nelson
https://rcn-ee.com/

[Robert Heller]

At Mon, 17 Aug 2020 06:40:17 -0700 beagl...@googlegroups.com wrote:

>
> BOOM

Right. The magic smoke will escape and your Beagle will die. Don't do that.
Level shifters are really cheap:

https://www.adafruit.com/?q=level%20shifter
https://www.mouser.com/Semiconductors/Logic-ICs/Translation-Voltage-Levels/_/N-4s6ih?P=1z0z63x&Keyword=level+shifter&FS=True

>
>
> On 8/17/2020 1:09 AM, NAGABHOOSHANAM VEMULA wrote:
> > Hi,
> > I am new to BBB world, excuse me if my questions are crazy

> > I understand the BBB gpio inputs are designed  for 3V3 supply (except

> > few Analogue inputs with 1.8V)
> >

> > What will happen if i connect to 5V  by accidental, a gpio_input to
> > 5Volts through a 1K resister, ,   () 5v<--/\/\/\/\/\/-> gpio-input

> >
> >
> > Thanks and regards,
> > Nagabhooshanam Vemula

> > email : nagabhoo...@gmail.com <mailto:nagabhoo...@gmail.com>

> > +91 83741 82839- HYD
> > --
> > For more options, visit http://beagleboard.org/discuss
> > ---
> > You received this message because you are subscribed to the Google
> > Groups "BeagleBoard" group.
> > To unsubscribe from this group and stop receiving emails from it, send
> > an email to beagleboard...@googlegroups.com

> > <mailto:beagleboard...@googlegroups.com>.

> > To view this discussion on the web visit
> > https://groups.google.com/d/msgid/beagleboard/CAJaY%3DExAJWpCcvVg6ukRd2zdBTenv-UDvLMjKL_HGXovz39gEA%40mail.gmail.com

> > <https://groups.google.com/d/msgid/beagleboard/CAJaY%3DExAJWpCcvVg6ukRd2zdBTenv-UDvLMjKL_HGXovz39gEA%40mail.gmail.com?utm_medium=email&utm_source=footer>.
>

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