# Picade X Hat: additional buttons **URL:** \ **Category:** Picade\ **Created:** [April 27, 2020, 9:02pm UTC](https://forums.pimoroni.com/t/picade-x-hat-additional-buttons/13683 "2020-04-27T21:02:14Z")\ **Posts on this page:** 12\ **Page:** 1
**Author:** ![pascal](https://avatars.discourse-cdn.com/v4/letter/p/e9a140/32.png) [@pascal](https://forums.pimoroni.com/u/pascal)\ **Post date:** [April 27, 2020, 9:02pm UTC](https://forums.pimoroni.com/t/picade-x-hat-additional-buttons/13683/1 "2020-04-27T21:02:14Z")
Hi, I have the first version of the Picade cabinet that came with the old Picade HAT but I upgraded it to a recent Pi 4 and the new Picade X Hat. The old cabinet had 2 additional buttons (for volume) that are not in the more recent, smaller version (i.e., 12 buttons instead of 10). Can I somehow wire them all to the Picade X Hat and use the additional two? If so, how? Thanks! ---
**Author:** ![alphanumeric](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/alphanumeric/32/2729_2.png) [@alphanumeric](https://forums.pimoroni.com/u/alphanumeric)\ **Post date:** [April 27, 2020, 9:53pm UTC](https://forums.pimoroni.com/t/picade-x-hat-additional-buttons/13683/2 "2020-04-27T21:53:58Z")
Button 7 and 8 on Hack Header maybe? ---
**Author:** ![pascal](https://avatars.discourse-cdn.com/v4/letter/p/e9a140/32.png) [@pascal](https://forums.pimoroni.com/u/pascal)\ **Post date:** [April 28, 2020, 6:46am UTC](https://forums.pimoroni.com/t/picade-x-hat-additional-buttons/13683/3 "2020-04-28T06:46:17Z")
Interesting suggestions! Does anyone have experience with connecting and configuring these buttons? It seems we need to disable the UART to re-assign them as GPIO… I’ll check the code of the driver but if someone has already done it, that would be helpful. ---
**Author:** ![alphanumeric](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/alphanumeric/32/2729_2.png) [@alphanumeric](https://forums.pimoroni.com/u/alphanumeric)\ **Post date:** [April 28, 2020, 10:14am UTC](https://forums.pimoroni.com/t/picade-x-hat-additional-buttons/13683/4 "2020-04-28T10:14:02Z")
I think those are the pins that can also be used for Plasma. I don’t own a Picade, just so you know. ;) There is some Picade stuff in the learn section. [https://learn.pimoroni.com/?term=picade](https://learn.pimoroni.com/?term=picade) ---
**Author:** ![pascal](https://avatars.discourse-cdn.com/v4/letter/p/e9a140/32.png) [@pascal](https://forums.pimoroni.com/u/pascal)\ **Post date:** [April 29, 2020, 7:36pm UTC](https://forums.pimoroni.com/t/picade-x-hat-additional-buttons/13683/5 "2020-04-29T19:36:45Z")
I managed to make it work with some editing of the picade.dts overlay, the buttons are mapped to keys. The only question I have left is if it is easily possible to map these keys to volume up/down (as in the original picade)? Any idea? Thanks. ---
**Author:** ![alphanumeric](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/alphanumeric/32/2729_2.png) [@alphanumeric](https://forums.pimoroni.com/u/alphanumeric)\ **Post date:** [April 29, 2020, 8:04pm UTC](https://forums.pimoroni.com/t/picade-x-hat-additional-buttons/13683/6 "2020-04-29T20:04:34Z")
That I don’t know. I don’t game on my Pi and have never used RetroPie etc. ---
**Author:** ![spfunnell](https://avatars.discourse-cdn.com/v4/letter/s/278dde/32.png) [@spfunnell](https://forums.pimoroni.com/u/spfunnell)\ **Post date:** [May 26, 2020, 12:18pm UTC](https://forums.pimoroni.com/t/picade-x-hat-additional-buttons/13683/7 "2020-05-26T12:18:44Z")
Hi, Did you do this with an RPi4? I managed to get Button 7 to map and work OK using this method, but button 8 doesn’t seem to work properly. Cheers Simon ---
**Author:** ![pascal](https://avatars.discourse-cdn.com/v4/letter/p/e9a140/32.png) [@pascal](https://forums.pimoroni.com/u/pascal)\ **Post date:** [May 26, 2020, 12:40pm UTC](https://forums.pimoroni.com/t/picade-x-hat-additional-buttons/13683/8 "2020-05-26T12:40:10Z")
Yes I got both buttons to work on a RPi4. Let me know if you need help. ---
**Author:** ![spfunnell](https://avatars.discourse-cdn.com/v4/letter/s/278dde/32.png) [@spfunnell](https://forums.pimoroni.com/u/spfunnell)\ **Post date:** [May 26, 2020, 12:47pm UTC](https://forums.pimoroni.com/t/picade-x-hat-additional-buttons/13683/9 "2020-05-26T12:47:55Z")
Thanks, interesting. These are the steps I took so far. I modified the picade.dts file to include ``` button7: button7 { label = "Button 7"; linux,code = <78>; gpios = <&gpio 15 1>; }; button8: button8 { label = "Button 8"; linux,code = <74>; gpios = <&gpio 14 1>; }; ``` and also ``` button7 = <&button7>,"linux,code:0"; button8 = <&button8>,"linux,code:0"; ``` The did sudo ./install.sh Rebooted, then Button 7 works, but Button 8 does nothing and then after a while, puts out some characters without the button being pressed (’-’ character in this case). I tried disabling Serial as suggested by alphanumeric in a different thread, but that didn’t make a difference. Also tried a vanilla install of Raspian which did the same. Did I miss anything? ---
**Author:** ![spfunnell](https://avatars.discourse-cdn.com/v4/letter/s/278dde/32.png) [@spfunnell](https://forums.pimoroni.com/u/spfunnell)\ **Post date:** [May 26, 2020, 2:51pm UTC](https://forums.pimoroni.com/t/picade-x-hat-additional-buttons/13683/10 "2020-05-26T14:51:09Z")
Fixed it. The missing part of the puzzle was specifying the pins in the dts file. brcm,pins = \<5 6 8 9 10 11 12 14 15 16 20 22 23 24 25 27\>; ---
**Author:** ![pascal](https://avatars.discourse-cdn.com/v4/letter/p/e9a140/32.png) [@pascal](https://forums.pimoroni.com/u/pascal)\ **Post date:** [May 26, 2020, 2:52pm UTC](https://forums.pimoroni.com/t/picade-x-hat-additional-buttons/13683/11 "2020-05-26T14:52:29Z")
I have added similar code to picade.dts: ``` button7: button7 { label = "Button 7"; linux,code = <114>; gpios = <&gpio 14 1>; }; button8: button8 { label = "Button 8"; linux,code = <115>; gpios = <&gpio 15 1>; }; ``` and ``` button7 = <&button7>,"linux,code:0"; button8 = <&button8>,"linux,code:0"; ``` then ``` cd Pimoroni/picade/picade-hat/ sudo make all install ``` then rebooted and it works. I use `triggerhappy` to control the volume. ---
**Author:** ![pascal](https://avatars.discourse-cdn.com/v4/letter/p/e9a140/32.png) [@pascal](https://forums.pimoroni.com/u/pascal)\ **Post date:** [May 26, 2020, 2:54pm UTC](https://forums.pimoroni.com/t/picade-x-hat-additional-buttons/13683/12 "2020-05-26T14:54:19Z")
Yes there are also the pins there, good that you made it work.