# Problems with output expander board firmware on OX 3.0

**URL:** <https://forum.electromage.com/t/problems-with-output-expander-board-firmware-on-ox-3-0/2819>\
**Category:** Troubleshooting\
**Created:** [February 28, 2023, 6:39am UTC](https://forum.electromage.com/t/problems-with-output-expander-board-firmware-on-ox-3-0/2819 "2023-02-28T06:39:44Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![thebitmaster](https://forum.electromage.com/user_avatar/forum.electromage.com/thebitmaster/32/2283_2.png) [@thebitmaster](https://forum.electromage.com/u/thebitmaster)\
**Post date:** [February 28, 2023, 6:39am UTC](https://forum.electromage.com/t/problems-with-output-expander-board-firmware-on-ox-3-0/2819/1 "2023-02-28T06:39:44Z")

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Does anyone know if the github source for the output expander board works with the 3.0 2021 version of the OX board? I just compiled and installed it, along with a few other versions, according to @zranger1’s great instructions, and now the orange light on the board is dim and steady instead of bright and blinky and the board doesn’t work anymore. These are the directions I followed:

> [@Build your own Output Expander Firmware!](https://forum.electromage.com/t/build-your-own-output-expander-firmware/2468):
>
> It makes me a little uncomfortable, telling people, “go ye, change what code you will and flash then thine own firmware. Easy!”, when I haven’t done it myself. Even though I theoretically know how, I had never actually worked with the output expander’s firmware. So I’ve made a project based on @Wizard’s latest open source that builds alternate firmware for the Output Expander, and describes (here and in the README.MD) how I got there. (Note that this is not intended as a contest entry, just …

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**Author:** ![wizard](https://forum.electromage.com/user_avatar/forum.electromage.com/wizard/32/4_2.png) [@wizard](https://forum.electromage.com/u/wizard)\
**Post date:** [February 28, 2023, 6:46am UTC](https://forum.electromage.com/t/problems-with-output-expander-board-firmware-on-ox-3-0/2819/2 "2023-02-28T06:46:28Z")

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> **[GitHub - simap/pixelblaze\_output\_expander at v3.x](https://github.com/simap/pixelblaze_output_expander/tree/v3.x)**
>
> v3.x

Has the 3.x files

You can get a pre built binary here [pixelblaze\_output\_expander/firmware/Release at v3.x · simap/pixelblaze\_output\_expander · GitHub](https://github.com/simap/pixelblaze_output_expander/tree/v3.x/firmware/Release)

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**Author:** ![system](https://forum.electromage.com/uploads/default/original/1X/98123d16088a5451b5a585e24c0f2a40dd76061e.png) [@system](https://forum.electromage.com/u/system)\
**Post date:** [June 28, 2023, 6:47am UTC](https://forum.electromage.com/t/problems-with-output-expander-board-firmware-on-ox-3-0/2819/3 "2023-06-28T06:47:28Z")

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