How to get the Atreus to work with USB Host Library for Arduino?

[dpapathanasiou (Denis Papathanasiou)]

I’ve built an arduino HID relay by following this video:

• https://www.youtube.com/watch?v=L7EqKJ02lK4

When I plug in a vanilla usb keyboard (i.e., not the Atreus) and run this keyboard example, I do see the key presses in the arduino’s serial monitor:

felis/USB_Host_Shield_2.0

However, when I plug in the Atreus, none of the keys register.

I suspect the problem is that the Atreus is incompatible with the spi4teensy3 library being used by the arduino sketch, but even if that is the case, I.m not sure what I would need to change to get it to work.

Are there any documents or guides which would be helpful for debugging?

[merlin (Michael Richters)]

Just guessing, but maybe it’s because Kaleidoscope is emulating multiple USB HID devices, including Mouse & Absolute Mouse.