Re: Issues connecting IOIO to bigger phone

[kkannan]

Thanks, that is really helpful. There are two regulators next to the trim 
pot. I'll check them and remove if they short circuited. By looking at the 
firmware version and board design, I am using the latest version from 
sparkfun btw.

Rgds
Kannan

On Monday, October 16, 2017 at 12:45:09 AM UTC+5:30, Ytai wrote:
>
> The latest version (as of almost two years now) of the IOIO from SparkFun 
> and SeeedStudio has improved protection for the regulator.
> If you want to bypass the on-board regulator, just feed 5v directly into 
> the 5v rail from an external regulator. Your damaged regulator might be 
> shorting the 5v rail so check that first, you may have to remove it.
>
>
> On Oct 15, 2017 07:28, "kkannan"  
> wrote:
>
> Hello IOIO users,
>
> I've been struggling to use my Lenovo Phap 2 Pro with IOIO due to power 
> issues. My setup is IOIO is powered thru JST connector by an external 
> battery  about 11.5 v and under 15v. It works for a day or two and then 
> nothing, even if it is powered from wall adapter, but it works when 
> connected with the laptop USB.  So it is clear that the regulator is gone 
> for good. 
>
> I damaged two boards so far and decided to try the Arduino ADK board. 
> Surprisingly after a day it too stopped working, this time it was powered 
> from wall adapter all along. I could connect to USB port and upload from 
> laptop with no issues, but same as with IOIO its regulator is gone.
>
> Lenovo p2p draws more current and it could be the reason behind the 
> failures. My question is can I power the phone using separate wires while 
> the data (+D & -D) connected to IOIO board? I am planning to use an 
> external regulator with higher rating.
>
> Any pointers to solve this issue is highly appreciated.
>
> Rgds
> Kannan
>
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>
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Re: Issues connecting IOIO to bigger phone

[Ytai Ben-Tsvi]

The latest version (as of almost two years now) of the IOIO from SparkFun
and SeeedStudio has improved protection for the regulator.
If you want to bypass the on-board regulator, just feed 5v directly into
the 5v rail from an external regulator. Your damaged regulator might be
shorting the 5v rail so check that first, you may have to remove it.


On Oct 15, 2017 07:28, "kkannan"  wrote:

Hello IOIO users,

I've been struggling to use my Lenovo Phap 2 Pro with IOIO due to power
issues. My setup is IOIO is powered thru JST connector by an external
battery  about 11.5 v and under 15v. It works for a day or two and then
nothing, even if it is powered from wall adapter, but it works when
connected with the laptop USB.  So it is clear that the regulator is gone
for good.

I damaged two boards so far and decided to try the Arduino ADK board.
Surprisingly after a day it too stopped working, this time it was powered
from wall adapter all along. I could connect to USB port and upload from
laptop with no issues, but same as with IOIO its regulator is gone.

Lenovo p2p draws more current and it could be the reason behind the
failures. My question is can I power the phone using separate wires while
the data (+D & -D) connected to IOIO board? I am planning to use an
external regulator with higher rating.

Any pointers to solve this issue is highly appreciated.

Rgds
Kannan

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Issues connecting IOIO to bigger phone

[kkannan]

Hello IOIO users,

I've been struggling to use my Lenovo Phap 2 Pro with IOIO due to power 
issues. My setup is IOIO is powered thru JST connector by an external 
battery  about 11.5 v and under 15v. It works for a day or two and then 
nothing, even if it is powered from wall adapter, but it works when 
connected with the laptop USB.  So it is clear that the regulator is gone 
for good. 

I damaged two boards so far and decided to try the Arduino ADK board. 
Surprisingly after a day it too stopped working, this time it was powered 
from wall adapter all along. I could connect to USB port and upload from 
laptop with no issues, but same as with IOIO its regulator is gone.

Lenovo p2p draws more current and it could be the reason behind the 
failures. My question is can I power the phone using separate wires while 
the data (+D & -D) connected to IOIO board? I am planning to use an 
external regulator with higher rating.

Any pointers to solve this issue is highly appreciated.

Rgds
Kannan

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