Trying to find replacement batteries for integrated batteries is a pain too, since might not be able to find an OEM replacement or battery from a reputable brand. So you end up having to go with whatever random no name battery that could be worse than the OEM battery and end up dying after less than a year.
My preference is rechargeable AA or AAA. And even better if the controller itself can recharge the battery like drone controllers.
No you don't have to. It's separate buttons. Just happened to do that for that game.
Here's one with keyboard keys.
I haven't tried over bluetooth but it does work over the 2.4 ghz dongle. I stick with the dongle over bluetooth, since polling is supposed to be 1000 hz.
Yes they can be set up like any other button through Steam Input. I've tested it myself on the 8bitdo Ultimate 2 wireless, and analog triggers and gyro also works. The only other controller that offered that functionality was playstation before the firmware update with other third party controllers having to enter switch mode, which has digital triggers.
There is one thing that needs to be worked out with vibration, since if it is on it can cause the controller to stop working in game while using Steam Input. Have to leave it off for now. But, it's been getting worked on.
Sad thing is for me I don't find the touchpads on the Deck useful, since unlike most users of the Deck I want to use them for movement and camera and quick input switching. And I haven't found the Deck touchpads good for primary use in place of joysticks, so I end up ignoring the touchpads on the Deck for the joysticks despite using my Steam Controller for most games on the desktop.
I love the left trackpad. I love it for movement, since I like setting stuff like dash, crouch, slide to it on a click which doesn't feel good doing the same with a joystick click. And I like setting a sprint activator on the very edge which is easier to avoid not accidentally triggering, because of the trackpad size.
I'm actually opposite where I wish the left joystick on the Steam Controller was a dpad.
I'd recommend the 8bitdo ultimate 2 wireless. Has two back paddles, but also has two additional bumper buttons so is actually 4 buttons in total. The back paddles of the controller is also much easier to press in than the Deck and extra bumpers easy to access, so even though the locations wouldn't be 1 to 1 the use I find easier.
Just have to update the firmware of the controller and dongle and then start the controller in dinput mode to be able to bind the extra buttons through Steam Input.
Joystick can be popped out and replaced with the 8bitdo joystick replacement.
https://steamcommunity.com/app/353370/discussions/0/601909079151044660/#c601909079151050603
It didn't fail because of a lack of a dpad but because of lack of two joysticks, but I'm glad the controller exists because I came to absolutely love the dual touchpads. And I wouldn't trade the left touchpad a dpad, since I like using it for movement.
I wouldn't trade the right touchpad for a joystick either, since I like using it to do quick 180s, quick swap between 5-10 inputs to bypass reloading in games like Doom Eternal by setting a dpad modeshift on a click, and touch activate gyro all on one touchpad.
Will probably be the last controller of its kind but I'm glad at least one did get made, since otherwise I'd still just be using a xbox or playstation controller like I did before getting Steam Controller.
If the Steam Controller was designed the way lot of people wanted it than it wouldn't have been a Steam Controller and just another Xbox or Playstation controller and added nothing new. Would have been more successful but in the end another generic twin joystick controller. So even if it didn't succeed it brought new things to the table like touch activated gyro and touch pads that could be considered for other controllers in the future.
Right now has to be the 8bitdo Ultimate 2 wireless. Not the bluetooth switch one. Need to update the dongle and controller to the latest beta firmware and launch it in dinput mode by turning it on while holding the B button. Then all the extra buttons can be mapped along with using gyro with analog triggers, which couldn't be done before.
There is a bug that needs to be fixed where rumble can cause the controller to stop working in game, so for now need to use it with rumble off until that is fixed. But, everything else works when it comes to binding through Steam Input.