Review on HiLetgo Development Compatible Interface Arduino by Renee Thomas

How - Works seamlessly with Arduino Mini Pro 3.3V Just plug one on top of the other and use the USB host library and you can create a Connect to a wireless device in minutes. I used it to pair with a PS4 controller. Works very well Dislikes - Not shockproof. I accidentally plugged it into a 5V mini and then the USB host device didn't work. Pairing with a Bluetooth device is also not as secure. Most of the time it connects well, but 20% of the time it doesn't. You need to reset, and then everything is usually fine.