# Knobs not working

**URL:** <https://discourse.zynthian.org/t/knobs-not-working/3357>\
**Category:** Building Zynthian\
**Created:** [October 24, 2019, 4:59am UTC](https://discourse.zynthian.org/t/knobs-not-working/3357 "2019-10-24T04:59:47Z")\
**Posts on this page:** 6\
**Page:** 1

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**Author:** ![brooksrbrown](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/brooksrbrown/32/2680_2.png) [@brooksrbrown](https://discourse.zynthian.org/u/brooksrbrown)\
**Post date:** [October 24, 2019, 4:59am UTC](https://discourse.zynthian.org/t/knobs-not-working/3357/1 "2019-10-24T04:59:47Z")

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I just booted my new v3 kit. The display works, and I set the hardware kit to v3 using the web interface, but the controllers still aren’t working. Attached is a picture of the wiring. What to do?

 ![zynth](https://discourse.zynthian.org/uploads/default/original/2X/f/fe6a6e9136947b4f9bf69d4ec3fb49dd1d3747ee.jpeg)

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**Author:** ![jofemodo](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/jofemodo/32/2_2.png) [@jofemodo](https://discourse.zynthian.org/u/jofemodo)\
**Post date:** [October 24, 2019, 8:43am UTC](https://discourse.zynthian.org/t/knobs-not-working/3357/2 "2019-10-24T08:43:59Z")

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Could login via ssh and send the output of this command:

```
gpio i2cd

```

I want to add a diagnostics script in the webconf, but until now you have to do it by hand …

Also, please check this entry:

> [@Kit V3: Encoders not working \[SOLVED\]](https://discourse.zynthian.org/t/kit-v3-encoders-not-working-solved/3131):
>
> Hello! My V3 Kit just arrived today. I assembled everything prepared an SD card with the latest image, did boot: Everything was as expected (got to the Zynthian screen but Encoders not working yet). I followed these steps: -Set the Hardware to V3 through the web config tool -Reboot -Updated the software through the web config tool -Reboot -Triple checked the wiring - unplugged and replugged the encoders Still, none of the encoders is doing anything, neither when I turn nor push it. Nothi…

Regards,

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**Author:** ![brooksrbrown](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/brooksrbrown/32/2680_2.png) [@brooksrbrown](https://discourse.zynthian.org/u/brooksrbrown)\
**Post date:** [October 24, 2019, 3:22pm UTC](https://discourse.zynthian.org/t/knobs-not-working/3357/3 "2019-10-24T15:22:48Z")

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Thanks! I didn’t see that entry because I was searching on controllers vs encoders. The gpio output is exactly as you have in the example, with the 20 on 0,20 and UU on d,40. Also, the jumpers seem to be there. I am wondering if the problem is with my power supply. I’m using the usb c output of my osx laptop, and it’s probably not correct. I will order a raspberry pi 3 power supply.

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**Author:** ![brooksrbrown](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/brooksrbrown/32/2680_2.png) [@brooksrbrown](https://discourse.zynthian.org/u/brooksrbrown)\
**Post date:** [October 24, 2019, 3:43pm UTC](https://discourse.zynthian.org/t/knobs-not-working/3357/4 "2019-10-24T15:43:49Z")

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Trying an update…

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**Author:** ![brooksrbrown](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/brooksrbrown/32/2680_2.png) [@brooksrbrown](https://discourse.zynthian.org/u/brooksrbrown)\
**Post date:** [October 24, 2019, 3:57pm UTC](https://discourse.zynthian.org/t/knobs-not-working/3357/5 "2019-10-24T15:57:05Z")

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…and IT WORKS! Although I’m not completely sure the update completed… seems to have completed, not seeing any update scripts still running. Looks like the problem is solved! Now to get some sounds out it and configure to work with the keytar!

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**Author:** ![wyleu](https://discourse.zynthian.org/user_avatar/discourse.zynthian.org/wyleu/32/514_2.png) [@wyleu](https://discourse.zynthian.org/u/wyleu)\
**Post date:** [October 24, 2019, 6:06pm UTC](https://discourse.zynthian.org/t/knobs-not-working/3357/6 "2019-10-24T18:06:31Z")

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> [@brooksrbrown](#):
>
> Now to get some sounds out

[🧐](http://wiki.zynthian.org/index.php/Talk:Zynthian_Wiki_Home)