USB host/HID interface
Here is a companion device for those already using the the Webtop hack.
It's the same OTG USB hub hack used with the Atrix, just wanted to share my setup and testing. So far it works excellent.
Right now, I have a USB keyboard and mouse, a FAT32 flashdrive, and a FAT32 external HDD all hooked up the the hub, and I'm watching a movie
off the HDD.
The basic theory of operation is that in micro usb connectors there is a fifth pin, actually the 4th over in a schematic. That pin is actually the ID pin, when its state changes it indicates to the phone that it USB mode is changing. In our case, we ground it, telling the phone to go into host mode. Now because the phone cant supply power to the USB device, we have the red jumper wire on the hub itself. This is effectively bridging the +5 from the power supply to the phone.
It should be noted that as of this post, i have only tested FAT32 formatted drives with this setup.
I'm working with a friend at the moment on an NTFS module, so the Photon can utilize NTFS drives.
Now, my setup looks a bit off because my connectors are on order and the one in the pictures, is one I cut out of a motorola cable. So it doesn't look pretty, but works great.
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