Thanks, I came across that page but the instructions don't work.
What I think may be happening is the playpad needs the firmware update to be used on android version 4.2+, but u need to have it connected in order to update the firmware via their app. Might need to find a device with an older android version to update the firmware, then see if it works.
Also, it seems the advertise this as being able to map buttons to touch input positions, even on the box, but it seems it doesn't support this yet as their app is still in beta, and has been for over a year! Bit of a legal grey area maybe, and can understand why some people aren't happy about it.
I'm not so bothered about the toiuch mapping, I'd just like to get the damn thing connected!
If I'm right about the firmware thing, u may not be able to use this with your nexus 5 out of the box
I'll see if I can find someone with a device running something below 4.2 and report back if the firmware update works.