# Dot matrix micropython examples not running

**URL:** <https://forums.pimoroni.com/t/dot-matrix-micropython-examples-not-running/19211>\
**Category:** Support\
**Created:** [March 30, 2022, 8:34pm UTC](https://forums.pimoroni.com/t/dot-matrix-micropython-examples-not-running/19211 "2022-03-30T20:34:41Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![Fishbone44](https://avatars.discourse-cdn.com/v4/letter/f/898d66/32.png) [@Fishbone44](https://forums.pimoroni.com/u/Fishbone44)\
**Post date:** [March 30, 2022, 8:34pm UTC](https://forums.pimoroni.com/t/dot-matrix-micropython-examples-not-running/19211/1 "2022-03-30T20:34:42Z")

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Hi,  
im trying to get the examples for the ltp305 driver breakout running but i am having difficulty acually getting them to work.

> **[pimoroni-pico/micropython/examples/breakout\_dotmatrix at main ·...](https://github.com/pimoroni/pimoroni-pico/tree/main/micropython/examples/breakout_dotmatrix)**
>
> main/micropython/examples/breakout\_dotmatrix

i am using a tiny2040 with the 1.18 micropython firmware, and i have both the ltp-305 and smbus2 modules installed on thonny. I have the dot matrix breakout board on a breadboard with the microcontroller and the sda and scl connected to gio 0 and 1.

on trying the time example i get the error:

Traceback (most recent call last):  
File “”, line 3, in   
ImportError: no module named ‘pimoroni\_i2c’

i have tried to find the module using the thonny package finder but it doesnt seem to be on there  
and im a little lost at what to try next

Thanks.

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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 30, 2022, 9:53pm UTC](https://forums.pimoroni.com/t/dot-matrix-micropython-examples-not-running/19211/2 "2022-03-30T21:53:33Z")

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It sounds like you are using the standard uf2 file? Try the custom Pimoroni tinny2040 uf2 file, scroll down the page to find it.

> **[Releases · pimoroni/pimoroni-pico](https://github.com/pimoroni/pimoroni-pico/releases)**
>
> Libraries and examples to support Pimoroni Pico add-ons in C++ and MicroPython. - pimoroni/pimoroni-pico

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<div class="post-metadata">

**Author:** ![Fishbone44](https://avatars.discourse-cdn.com/v4/letter/f/898d66/32.png) [@Fishbone44](https://forums.pimoroni.com/u/Fishbone44)\
**Post date:** [April 16, 2022, 4:34pm UTC](https://forums.pimoroni.com/t/dot-matrix-micropython-examples-not-running/19211/3 "2022-04-16T16:34:38Z")

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Thanks, i think that was it :) ive got it working now.

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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:** [April 16, 2022, 4:42pm UTC](https://forums.pimoroni.com/t/dot-matrix-micropython-examples-not-running/19211/4 "2022-04-16T16:42:27Z")

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Nice, have fun. I like it when its an easy fix / solution. =)