Solved - THANK YOU!

@Rickt1962

Do you have an original controller? Or is it a clone PS3 ccontroller? How well does the bluetooth work? Are you using a dongle of Pi3´s own bluetooth?

@oceantologist you need to uninstall the ps3controller driver.

Hello,

Sorry to revive a old topic but I have the same issue, and so I thought I'd add my details in case anyone has more info since last time:

Raspberry PI 3B Retropie 4.3 BLE Keyboard Logitech K830

As OP, the keyboard is discovered and it claim pairing is successful, but it's not usable :(.

I found the post below on stack Exchange that looks promising (suggesting installing latest BlueZ module), but before I attempt the steps myself, I wanted to check if anyone has tried it for retropie.

"Does RPi 3 have BLE (Bluetooth Low Energy/Bluetooth 4.0/Bluetooth Smart)"
https://raspberrypi.stackexchange.com/questions/61758/does-rpi-3-have-ble-bluetooth-low-energy-bluetooth-4-0-bluetooth-smart#answer-61775

Thanks!
Tim

@obsidianspider I have read up on typical RPi3 BT speeds and they shape up to be maximum 256kb/s

Meaning that the BT Display would be 15551.5625 the maximum capability at best..... The compression would need to be 20,000x in under 10 milliseconds. That kind of compression would take hours to years for a Pi, and the entire screen would be an artifact.

Sorry, this was not working....

pi@retropie:~ $ bluez-test-device remove E8:06:88:4D:25:43
-bash: bluez-test-device: command not found

@BuZz I deleted the driver though, even sudo purge sixad

I went with the 8BitDo FC30 Pro and NES30 PRO
I really like the controller, but I didn't realize it would be so small (it is actually the same spacial size as a WII PRO controller, but the buttons are smaller)

The only problem I have.. is I think games are recognizing it as 2nd Player.
I was using a PS4 controller before, and just plugged in and set up a FC30 PRO, but when I start any game up.. it won't let me hit start... yet it works perfectly in the RetroPie screen.

@BuZz OMG. Thanks, BuZz. It worked.. I guess this was some information that I either overlooked or just didn't come across. You just saved me from a great deal of stress.

Thank you so much, BuZz... You are awesome. :)

Nice that you solved it. Next time, check this first:
https://retropie.org.uk/forum/topic/3/read-this-first

@SpudsMcToole said in 8bitdo Zero gamepad setup:

@Dochartaigh Oh, it needs a Bluetooth dongle? I thought the RP3 had Bluetooth built in.

Pi 3 does have bluetooth. I was just saying I thought it worked on my Pi Zero which doesn't have bluetooth (thus needing a dongle). I found my dongle, but can't find that tiny Zero to test unfortunately.

@codywest81384 Please have a look here.

@backstander
Hi. Thanks i did that also. Read it on another forum but still the same problem. Wont pick up ANY bluetooth devices. Not just the lro controller. Maybe a hardware issue. Im jist gonna get a wireless adapter to plug in via usb.
Really wanted to utilize the on board bluetooth but no biggie. Not worth the hours i already spent researching the subject. Thanks for all your help. Great forum

If anyone did try to help, don't worry I ditched the mini keyboard and went for a standard USB one. Solved

The steps described in https://retropie.org.uk/forum/post/53840 worked for me to reduce input lag on the SNES30/SN30. I'm looking for a way to make the changes permanent.