# Hiperpixel Square Display and UART problems

**URL:** <https://forums.pimoroni.com/t/hiperpixel-square-display-and-uart-problems/19173>\
**Category:** Support\
**Created:** [March 25, 2022, 4:25pm UTC](https://forums.pimoroni.com/t/hiperpixel-square-display-and-uart-problems/19173 "2022-03-25T16:25:11Z")\
**Posts on this page:** 7\
**Page:** 1

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**Author:** ![jdsilvapereira](https://avatars.discourse-cdn.com/v4/letter/j/9de053/32.png) [@jdsilvapereira](https://forums.pimoroni.com/u/jdsilvapereira)\
**Post date:** [March 25, 2022, 4:25pm UTC](https://forums.pimoroni.com/t/hiperpixel-square-display-and-uart-problems/19173/1 "2022-03-25T16:25:11Z")

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Hi,

I installed the latest version of the hyperpixel square display for raspberry pi.  
However, I was using an RFDI device on the UART 14/15 port and it stopped responding after configuring the display.

What’s the problem ? What’s the solution ?

Best Regards

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<div class="post-metadata">

**Author:** ![alphanumeric](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/alphanumeric/32/2729_2.png) [@alphanumeric](https://forums.pimoroni.com/u/alphanumeric)\
**Post date:** [March 25, 2022, 4:39pm UTC](https://forums.pimoroni.com/t/hiperpixel-square-display-and-uart-problems/19173/2 "2022-03-25T16:39:44Z")

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The Hyperpixel uses those pins and repurposes them to special functions.  
I think your looking at a one or the other but not both situation.  
[Hyperpixel at Raspberry Pi GPIO Pinout](https://pinout.xyz/pinout/hyperpixel)

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<div class="post-metadata">

**Author:** ![jdsilvapereira](https://avatars.discourse-cdn.com/v4/letter/j/9de053/32.png) [@jdsilvapereira](https://forums.pimoroni.com/u/jdsilvapereira)\
**Post date:** [March 25, 2022, 4:53pm UTC](https://forums.pimoroni.com/t/hiperpixel-square-display-and-uart-problems/19173/3 "2022-03-25T16:53:59Z")

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Thanks.  
Any solution/suggestion to free uart ports ? I only need RX pin!

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<div class="post-metadata">

**Author:** ![alphanumeric](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/alphanumeric/32/2729_2.png) [@alphanumeric](https://forums.pimoroni.com/u/alphanumeric)\
**Post date:** [March 25, 2022, 4:59pm UTC](https://forums.pimoroni.com/t/hiperpixel-square-display-and-uart-problems/19173/4 "2022-03-25T16:59:01Z")

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No, sorry, above my skill level if even possible?

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<div class="post-metadata">

**Author:** ![jdsilvapereira](https://avatars.discourse-cdn.com/v4/letter/j/9de053/32.png) [@jdsilvapereira](https://forums.pimoroni.com/u/jdsilvapereira)\
**Post date:** [March 25, 2022, 5:01pm UTC](https://forums.pimoroni.com/t/hiperpixel-square-display-and-uart-problems/19173/5 "2022-03-25T17:01:36Z")

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Maybe I can turn off the touch and change the GPIO to free ports 14 and 15 !!

Anyone with this experience?

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<div class="post-metadata">

**Author:** ![alphanumeric](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/alphanumeric/32/2729_2.png) [@alphanumeric](https://forums.pimoroni.com/u/alphanumeric)\
**Post date:** [March 25, 2022, 5:28pm UTC](https://forums.pimoroni.com/t/hiperpixel-square-display-and-uart-problems/19173/6 "2022-03-25T17:28:24Z")

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Or go with a USB to UART adapter?

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<div class="post-metadata">

**Author:** ![jdsilvapereira](https://avatars.discourse-cdn.com/v4/letter/j/9de053/32.png) [@jdsilvapereira](https://forums.pimoroni.com/u/jdsilvapereira)\
**Post date:** [March 25, 2022, 9:44pm UTC](https://forums.pimoroni.com/t/hiperpixel-square-display-and-uart-problems/19173/7 "2022-03-25T21:44:42Z")

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If I disable pin GPIO 33, I loose some green color, but is good enough!! How I can map pin GPIO 33 to ignore display settings ?