# Display-O-Tron HAT i2c problem

**URL:** <https://forums.pimoroni.com/t/display-o-tron-hat-i2c-problem/981>\
**Category:** Raspberry Pi\
**Created:** [September 14, 2015, 2:22pm UTC](https://forums.pimoroni.com/t/display-o-tron-hat-i2c-problem/981 "2015-09-14T14:22:44Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![gadgetoid](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/gadgetoid/32/13_2.png) [@gadgetoid](https://forums.pimoroni.com/u/gadgetoid)\
**Post date:** [September 14, 2015, 3:15pm UTC](https://forums.pimoroni.com/t/display-o-tron-hat-i2c-problem/981/3 "2015-09-14T15:15:57Z")

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Looking into it!

What happens if you run one of our examples? Such as ( if you used the one line installer ):

`sudo ./home/pi/Pimoroni/dot3k/dothat/basic/backlight.py`

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_[View the full topic](https://forums.pimoroni.com/t/display-o-tron-hat-i2c-problem/981)._