About 20 cm from the Arduino, it stopped working.
Now i haven't covered the Arduino, but i slowly got closer. This worked, so the problem was only with styrofoam. I also covered the Arduino with other things than styrofoam, like a garbage can, cardboard and some metal box. But I was wondering if I could connect the DualShock 4 to the Arduino without the USB host shield and only using a bluetooth dongle as shown here. I also tried a playstation 3 controller with a Bluetooth dongle. Hi reddit, Im working on making a DualShock 4 controlled RC car and from what Ive seen so far, everyone is using a USB Host Shield to connect to the USB-bluetooth adapter. Next, i tried other xbox receivers and controllers. First, i tried some other power supplies, from AA batteries on the VIN pin to external power adaptors. I have tested it a bit more now and i think i can reduce the probable reasons. I carefully chose this shields, because the motor shield is just using the pins A4 and A5, the USB host shield is using some of the digital pins, so I think there is no interference. The combination of the shield shouldn't be a problem, too. And the USB host shield should give enough power, since the specs are saying, that 500 mA is no problem, and hit is exactly the USB 2.0 spec. Has anyone an idea, how to solve this problem? I guess, this is a power problem, since this issue does not occur, when I connect the Xbox receiver to my Mac. I have uploaded a small video on youtube, where you can see the problem. If that happens, the controller signals is lost and does not connect again, unless I restart the Arduino. Every seems to work fine, until i cover everything with a styrofoam hemisphere. To control the two Pololu motors, which have a stall current of 1.6 amps each, I use a Xbox 360 wireless controller, where the receiver is connected to the USB Host Shield. The Arduino is powered by a 9V-Block battery, the motors are powered separately by two 18650 Li-Ion batteries. On top, I have stacked an Adafruit Motor Shield v2.3 and, again, on top of this, I have stacked the Sparkfun USB Host Shield.
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