# Not quite a success case yet

**URL:** <https://discourse.zynthian.org/t/not-quite-a-success-case-yet/2720>\
**Category:** Building Zynthian\
**Created:** [February 13, 2019, 1:17pm UTC](https://discourse.zynthian.org/t/not-quite-a-success-case-yet/2720 "2019-02-13T13:17:11Z")\
**Posts on this page:** 1\
**Showing post:** 2

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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:** [February 13, 2019, 1:38pm UTC](https://discourse.zynthian.org/t/not-quite-a-success-case-yet/2720/2 "2019-02-13T13:38:25Z")

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Congratulations … your pretty close!! And you are the first person, as far as i know, that is using a generic MCP23017 module from ebay. I supposse something like that:

[https://www.ebay.com/itm/MCP23017-IO-Port-Expander-16-Bit-Module-Pin-Board-I2C-Interface-For-C51-Arduino-/273181261911](https://www.ebay.com/itm/MCP23017-IO-Port-Expander-16-Bit-Module-Pin-Board-I2C-Interface-For-C51-Arduino-/273181261911)

Very good idea!! 👌

> [@SquidgyB](#):
>
> The AudioInjector has been a pain from the start,

Yes. My experience with AudioInjector soundcards has been a pain too … although when finally you get it working, the sound is not so bad … and audio input is something nice to have 😉

> [@SquidgyB](#):
>
> They’re going to be given placeholder switches, maybe LED indicators for something, or just covered up

Yo could use one of them for a “panic button” … as explained here:

> [Extra Switches (sw1): Sustain Pedal, Panic Button, etc](https://discourse.zynthian.org/t/extra-switches-sustain-pedal-panic-button-etc/1843)

Regards,

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