That's how I do it, Bluetooth controller, wifi for sync and just a RPI with power and HDMI.
The bluetooth module in built-in on RPI 3, you can also use a cheap Bluetooth adapter for PC, it works too.
When the controller's battery dies I just play chill games like pokemon with my phone as a controller (RetroArch feature "Remote Gamepad") and keep going.
You can plug you PC or laptop to the TV in the meantime. 😎
That's how I do it, Bluetooth controller, wifi for sync and just a RPI with power and HDMI.
The bluetooth module in built-in on RPI 3, you can also use a cheap Bluetooth adapter for PC, it works too.
When the controller's battery dies I just play chill games like pokemon with my phone as a controller (RetroArch feature "Remote Gamepad") and keep going.
You can plug you PC or laptop to the TV in the meantime. 😎