I am currently trying to control my i2 using a PS3 controller. I have bought one of these and I plan on trying to connect it to the Mega with the un-used pins and then when a button is pressed G-code of your choice is written to the serial line for your printer to execute.
To test the USB host shield I followed this tutorial - http://www.youtube.com/watch?v=q3vXTX6Qe54
This shows you that when a button is pressed it prints that button to the serial monitor. I just used a Uno with nothing else attached.
The board also worked great with a Mega, however I could get it to work when the Ramps 1.4 shield was also attached. This was because I couldn't get access to the 6 ICSP header pins in the middle of the Mega. I wasn't will to solder wires to these headers and so despite trying to find another way I couldn't.
If anyone could help me I would be very grateful as I think it would be great.
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