# Driving neopixels from a CAN-Signal

**URL:** <https://discourse.nodered.org/t/driving-neopixels-from-a-can-signal/83092>\
**Category:** General\
**Created:** [22 November 2023 12:15 UTC](https://discourse.nodered.org/t/driving-neopixels-from-a-can-signal/83092 "2023-11-22T12:15:24Z")\
**Posts on this page:** 5\
**Page:** 2

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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 2023 11:09 UTC](https://discourse.nodered.org/t/driving-neopixels-from-a-can-signal/83092/21 "2023-12-15T11:09:59Z")

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Using a shifter is best practice and the correct way of doing things.

I think you may have shorted something out at one stage and that's done the shifter in but saved your Pi 🙂

It's hard to diagnose hardware issues if you don't have two of everything 🙂

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**Author:** ![Sean-McG](https://sea2.discourse-cdn.com/flex026/user_avatar/discourse.nodered.org/sean-mcg/32/54677_2.png) [@Sean-McG](https://discourse.nodered.org/u/Sean-McG)\
**Post date:** [15 December 2023 12:50 UTC](https://discourse.nodered.org/t/driving-neopixels-from-a-can-signal/83092/22 "2023-12-15T12:50:44Z")

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Glad you got it working - looking at your pictures it's also quite likely that you just had a bad connection along the way. The jumpers through the level shifter probably don't make the best connections.

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**Author:** ![Mo\_251](https://avatars.discourse-cdn.com/v4/letter/m/839c29/32.png) [@Mo\_251](https://discourse.nodered.org/u/Mo_251)\
**Post date:** [3 February 2024 06:58 UTC](https://discourse.nodered.org/t/driving-neopixels-from-a-can-signal/83092/23 "2024-02-03T06:58:09Z")

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Thanks for your answers, i have one more question regarding this project.  
How can i light up a single LED in the strip? For example i want LED no. 60 to light up white. Enough to just create a inject node stating 60,60,255,255,255? The LED's before no. 60 are not supposed to light up. Also, at the same time i want to light up LED's depending on the CAN value.

CAN value should state the State of Charge of a battery in an electric car. The single LED should state the target SoC while charging.  
Thanks again 🙂

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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:** [3 February 2024 17:33 UTC](https://discourse.nodered.org/t/driving-neopixels-from-a-can-signal/83092/24 "2024-02-03T17:33:00Z")

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I'm away until wed so can't test but you should be able to do it. The node help should give you enough info 🙂

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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:** [3 April 2024 17:33 UTC](https://discourse.nodered.org/t/driving-neopixels-from-a-can-signal/83092/25 "2024-04-03T17:33:12Z")

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