# Ws2812b.led ring

**URL:** <https://forum.electromage.com/t/ws2812b-led-ring/930>\
**Category:** Troubleshooting\
**Created:** [January 24, 2021, 6:35pm UTC](https://forum.electromage.com/t/ws2812b-led-ring/930 "2021-01-24T18:35:12Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Jclark2053](https://forum.electromage.com/letter_avatar_proxy/v4/letter/j/7ba0ec/32.png) [@Jclark2053](https://forum.electromage.com/u/Jclark2053)\
**Post date:** [January 24, 2021, 6:35pm UTC](https://forum.electromage.com/t/ws2812b-led-ring/930/1 "2021-01-24T18:35:12Z")

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Hello I had a question about the led rings. I had cut a section off of the led ring and when I went to connect them only one side of the ring lit up. I’m confused on how to get the other side of the ring to light up.

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**Author:** ![jeff](https://forum.electromage.com/user_avatar/forum.electromage.com/jeff/32/3473_2.png) [@jeff](https://forum.electromage.com/u/jeff)\
**Post date:** [January 24, 2021, 7:20pm UTC](https://forum.electromage.com/t/ws2812b-led-ring/930/2 "2021-01-24T19:20:15Z")

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Hi JClark,

Here’s my guess. I’m thinking you may have cut it at angles that weren’t chosen to carefully only trim off the **end** of the sequence.

If you unrolled the ring, you’d find it’s a liner sequence; that’s just how all WS28xx’s work, whether a strip, a ring, a 2D matrix grid, etc.

So, imagining a clock, let’s say that your ring was wired to start the data flow in at the 1 o’clock position, then pass data to 2 o’clock, etc, and the last LED is at the top, 12 o’clock.

Now, let’s pretend you snipped out the bottom 60 degrees: From 5 o’clock to 7 o’clock.

Data is now interrupted, so 1-6 o’clock will still work, and 8-12 o’clock will be dark.

Is this possibly what you’re experiencing?

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**Author:** ![Jclark2053](https://forum.electromage.com/letter_avatar_proxy/v4/letter/j/7ba0ec/32.png) [@Jclark2053](https://forum.electromage.com/u/Jclark2053)\
**Post date:** [January 25, 2021, 12:43am UTC](https://forum.electromage.com/t/ws2812b-led-ring/930/3 "2021-01-25T00:43:01Z")

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Thank you for your input it really helped.

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**Author:** ![Jclark2053](https://forum.electromage.com/letter_avatar_proxy/v4/letter/j/7ba0ec/32.png) [@Jclark2053](https://forum.electromage.com/u/Jclark2053)\
**Post date:** [January 25, 2021, 12:44am UTC](https://forum.electromage.com/t/ws2812b-led-ring/930/4 "2021-01-25T00:44:18Z")

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And yes that’s Definitely what I was experiencing as well.