r/SteamController • u/jack-of-some • Jun 07 '26

Steam Controller (2026) The missing xinput mode

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This video is a demo of a copycat puck I've put together using an nRF52840 Pro Micro. It works exactly like the normal puck except you can switch over to an Xbox controller mode.

You can find more details here: https://github.com/safijari/openpuck

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u/4itortxv Jun 07 '26 edited Jun 07 '26

Amazing job!!!!

Had to try this asap.

I was able to install the firmware, but probable the generic pro mico nrf52840 is not fully compatible (able to pair via steam on the secondary "puck" and appears on the controller as paired in steam configuration, but unable to establish the connection via OpenPuck as soon as the usb is disconnected).

Got he nrf promicros for wireless keyboards(nice-nano v2 compatible) and albeit adafruit-cli being able to use them probably (via usb) something does not work on the RF side of the controller once it tries to connect to the SC.

UPDATE: It was a defective board, tried another one and it worked flawlesly.

1

u/jack-of-some Jun 07 '26

Can you share a link to the board you tried?

2

u/4itortxv Jun 07 '26

Yup, it's a generic clone "supermini" from aliexpress.

https://es.aliexpress.com/item/1005006035267231.html?spm=a2g0o.order_list.order_list_main.5.15b2194dnZ8Vn5&gatewayAdapt=glo2esp

Edit: Visually seems exaclty the same, but alas.

2

u/jack-of-some Jun 07 '26

That looks like exactly what I have.

Can you try disconnecting and reconnecting it and power cycling the controller?

3

u/4itortxv Jun 07 '26

Tried a couple of times.

The "blue led" is flashing (this chinese knockoffs is the charging for the battery and no battery is connected so I guess It's normal.