You seem to be doing everything OK. The mode switch to "H" thing is not
typically needed ("A" is for "auto-detect" and should work).
If your power supply is adequate, the only problem I can think of is the
dongle itself. Try a different one. There's a list of known working ones on
the wiki and some of which are very cheap.

On Sat, Mar 19, 2016 at 2:49 PM, Jonathan W <[email protected]> wrote:

> I have a IOIO-OTG with the following versions reported by the IOIODUDE
> application:
>
> Hardware version: SPRK0020
> Bootloader version: IOIO0400
> Application version: IOIO0506
>
> The problem is getting the Bluetooth to work.  USB connection to my PC
> (Windows 8.1) is working now, though not at first.  At first Windows kept
> saying it was not a recognized device and would not let me select the
> driver for it.  Once I started the IOIO in bootloader mode then Windows
> finally enumerated the USB connection.  I took the opportunity then to
> update to the 506 application firmware (prior to that IOIODUDE reported
> "Platform version: IOIO0030" instead of an Application Version).  Now USB
> connection works fine even in normal boot mode.  Perhaps this bit about
> starting in bootloader mode will help others too.
>
> So now for the Bluetooth...  My PC recognizes and pairs with a Bluetooth
> mouse as well as my dumb phone without any trouble.  So I know that the
> PC's own Bluetooth is working.  I am using the USB cable and Bluetooth
> adaptor that came with the IOIO.  I have a 6V power supply and I have the
> charge limiting potentiometer turned fully clockwise and I have the mode
> switch set to "H".  I have tried powering up the IOIO with the Bluetooth
> adaptor already plugged in and also tried powering up the IOIO first and
> then plugging in the Bluetooth adaptor to the USB cable.  Still when I go
> to Windows 8.1's "Bluetooth Settings" app and watch it trying to discover
> devices it does not show the IOIO.  What I am missing?
>
>
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