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

[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.

--
You received this message because you are subscribed to the Google Groups "ioio-users" group.
To unsubscribe from this group and stop receiving emails from it, send an email to ioio-users+unsubscribe@googlegroups.com.
To post to this group, send email to ioio-...@googlegroups.com.
Visit this group at https://groups.google.com/group/ioio-users.
For more options, visit https://groups.google.com/d/optout.

[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" <parvath...@gmail.com> 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

--
You received this message because you are subscribed to the Google Groups "ioio-users" group.

To unsubscribe from this group and stop receiving emails from it, send an email to ioio-users+...@googlegroups.com.