# Node-red-contrib-i2c fails to install

**URL:** <https://discourse.nodered.org/t/node-red-contrib-i2c-fails-to-install/18774>\
**Category:** General\
**Created:** [4 December 2019 05:08 UTC](https://discourse.nodered.org/t/node-red-contrib-i2c-fails-to-install/18774 "2019-12-04T05:08:51Z")\
**Posts on this page:** 1\
**Showing post:** 41

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**Author:** ![cymplecy](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/cymplecy/32/2773_2.png) [@cymplecy](https://discourse.nodered.org/u/cymplecy)\
**Post date:** [15 December 2019 21:36 UTC](https://discourse.nodered.org/t/node-red-contrib-i2c-fails-to-install/18774/41 "2019-12-15T21:36:35Z")

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That's what I think (In fact I posted that on the issue on github about 20 mins ago) 🙂

Its all seems to fully work with me using an i2c Pi add-on board (4tronix PiCon Zero)

I can configure inputs to read anlog values and I can make an output switch between 1 and 0 to control a LED  
 ![image](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/2X/e/ed8b850a2713ce4337d9e6b99cb313a6248b1764.jpeg)

 ![2019-12-15 21.35.59](https://us1.discourse-cdn.com/flex026/uploads/nodered/original/2X/5/5fadfc4624ae91827104926a63eb6588eddf4a44.jpeg)

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