# Custom node for Mux chip

**URL:** <https://discourse.nodered.org/t/custom-node-for-mux-chip/43220>\
**Category:** Developing Nodes\
**Created:** [25 March 2021 21:05 UTC](https://discourse.nodered.org/t/custom-node-for-mux-chip/43220 "2021-03-25T21:05:54Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Peter](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/peter/32/25135_2.png) [@Peter](https://discourse.nodered.org/u/Peter)\
**Post date:** [25 March 2021 21:05 UTC](https://discourse.nodered.org/t/custom-node-for-mux-chip/43220/1 "2021-03-25T21:05:54Z")

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Hi Guys,

I am wondering if it is possible to build a custom Node to function similar to the GPIO's for the Mux chip outputs?

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**Author:** ![Colin](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/colin/32/17040_2.png) [@Colin](https://discourse.nodered.org/u/Colin)\
**Post date:** [25 March 2021 21:24 UTC](https://discourse.nodered.org/t/custom-node-for-mux-chip/43220/2 "2021-03-25T21:24:44Z")

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Which Mux chip and on what device does one find this?

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**Author:** ![system](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/1X/d073cd938eafa2e558d7c2cd59003b3ef4963033.png) [@system](https://discourse.nodered.org/u/system)\
**Post date:** [24 May 2021 21:24 UTC](https://discourse.nodered.org/t/custom-node-for-mux-chip/43220/3 "2021-05-24T21:24:45Z")

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