2.8'' TFT Touch Shield with USB Host Shild


i am using an arduino mega with the TFT Touch Shild and the USB Host Shield 2.0.

Both Shields are working perfekt when i use them alone. When i use them together the USB shild is working perfekt. From the TFT Touch Shild only the touch-functions are working. The Display itself shows nothing. only backlight.

There were two pins which was used from both shilds. But i have mapped them to free pins for the USB shild (INT and SS).

I would be very glad for ideas.

Thanks in advance



First, please check your code, and make sure that you did not miss anything when you mapped your pins. It is like there are more than 2 pins used by them both.

Secondly, try using a separate power connection to supply them. Sometimes there would be problems when you are using USB of the laptop to drive gadgets of too high power. And sometimes that would also cause burning of USB interfaces.

Thirdly, if you just want to get the results done as quickly as possible, buy another board to drive each shield separately, and connect them with serial communication.

Good Luck!