Re: [beagleboard] BBB Won't Power Up

[evilwulfie]

you cannot drive a mosfet with a BBB IO pin
they make Fet drivers to do the heavy lifting
a gate on a mosfet can take  a lot of current to make it work

just an example driver  there are a lot more of them   Microchip TC1410


On 3/5/2015 2:38 PM, g...@sensa.io wrote:
> I did this setup with an LED strip, MOSFETs, and a separate 12V power
> supply: http://forums.adafruit.com/viewtopic.php?f=8&t=69691&p=353076
> See 5 posts down of a picture.
>
> This setup has apparently fried 2 of my Beaglebones.
> I tested the gate pins on the MOSFETs (which were the only thing
> connected to the Bone) and they were only reading about 200mA. 
>
> The Adafruit customer support says they don't think this would be
> capable of frying the board.
>
> I've been searching trying to see if somehow this tripped a fuse or
> something on the Bone.
>
> One of my Bones the power light comes on, but it won't boot (Rev B).
> On the other (Rev C), the power light flickers and then goes off and
> nothing happens.
>
> Any ideas?
> -- 
> For more options, visit http://beagleboard.org/discuss
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Re: [beagleboard] BBB Won't Power Up

[Gerald Coley]

You are most likely correct. I would a schematic to be sure, but you most
likely fried it with the word 12V on that page.

http://www.elinux.org/Beagleboard:BeagleBoneBlack#Expansion_Header_Usage


Gerald


On Thu, Mar 5, 2015 at 3:38 PM,  wrote:

> I did this setup with an LED strip, MOSFETs, and a separate 12V power
> supply: http://forums.adafruit.com/viewtopic.php?f=8&t=69691&p=353076
> See 5 posts down of a picture.
>
> This setup has apparently fried 2 of my Beaglebones.
> I tested the gate pins on the MOSFETs (which were the only thing connected
> to the Bone) and they were only reading about 200mA.
>
> The Adafruit customer support says they don't think this would be capable
> of frying the board.
>
> I've been searching trying to see if somehow this tripped a fuse or
> something on the Bone.
>
> One of my Bones the power light comes on, but it won't boot (Rev B). On
> the other (Rev C), the power light flickers and then goes off and nothing
> happens.
>
> Any ideas?
>
> --
> 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+unsubscr...@googlegroups.com.
> For more options, visit https://groups.google.com/d/optout.
>



-- 
Gerald

ger...@beagleboard.org
http://beagleboard.org/
http://circuitco.com/support/

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[beagleboard] BBB Won't Power Up

[greg]

I did this setup with an LED strip, MOSFETs, and a separate 12V power 
supply: http://forums.adafruit.com/viewtopic.php?f=8&t=69691&p=353076
See 5 posts down of a picture.

This setup has apparently fried 2 of my Beaglebones.
I tested the gate pins on the MOSFETs (which were the only thing connected 
to the Bone) and they were only reading about 200mA. 

The Adafruit customer support says they don't think this would be capable 
of frying the board.

I've been searching trying to see if somehow this tripped a fuse or 
something on the Bone.

One of my Bones the power light comes on, but it won't boot (Rev B). On the 
other (Rev C), the power light flickers and then goes off and nothing 
happens.

Any ideas?

-- 
For more options, visit http://beagleboard.org/discuss
--- 
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"BeagleBoard" group.
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