If you also want to use a real PS/2 keyboard and mouse together with your USB devices you can mount another level shifter on top of the pico. These two ports work as PS/2 inputs and are passed through ...

I'm attempting to connect various Bluetooth Classic keyboards with BluetoothHIDMaster > KeyboardPiano.ino and having no luck. I put them in pairing mode but no connection is made. Arduino tools set ...