[57north-discuss] Microcontroller for simulating a USB HID

Edward Watson mail at edwardwatson.co.uk
Thu Jul 24 18:37:04 UTC 2014


On 24 July 2014 17:46, Calum Chisholm <calum.chisholm at gmail.com> wrote:

> I did look at the nano, but it apparently uses a special-purpose FTDI chip
> for USB [1], so can't act as a HID. Not sure if that's true for the v3 as
> well though - I haven't found a definitive answer online yet.
>
Ah sure - you would only be using the Nano's FTDI USB chip for uploading
the code. The V-USB device itself would use your assigned I/O pins together
with a specific arrangement of diodes to mimic the USB tx/rx pins, with the
USB hosts V+ and GND pins powering the Nano's power rails.  Pretty sure it
would work fine.

Cheers,
Ed
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