# Dot3k Pins

**URL:** <https://forums.pimoroni.com/t/dot3k-pins/170>\
**Category:** Support\
**Created:** [November 16, 2014, 5:07pm UTC](https://forums.pimoroni.com/t/dot3k-pins/170 "2014-11-16T17:07:23Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![ElectronicsGeek](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/electronicsgeek/32/87_2.png) [@ElectronicsGeek](https://forums.pimoroni.com/u/ElectronicsGeek)\
**Post date:** [November 16, 2014, 5:07pm UTC](https://forums.pimoroni.com/t/dot3k-pins/170/1 "2014-11-16T17:07:23Z")

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I’m planning to use a UART USB cable on my Pi along with a dot3k, connected with jumper wires. Will I be able to do so, and if so, what pins does dot3k use?

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**Author:** ![jon](https://avatars.discourse-cdn.com/v4/letter/j/3bc359/32.png) [@jon](https://forums.pimoroni.com/u/jon)\
**Post date:** [November 16, 2014, 5:09pm UTC](https://forums.pimoroni.com/t/dot3k-pins/170/2 "2014-11-16T17:09:09Z")

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You’ll be fine using the UART interface on the GPIO :-) Phil has a nice hack for this in fact! Phil…?

Dot3K uses the I2C, SPI, and 5 other GPIO (for the joystick), if you look at the code library on GitHub it should be pretty clear which :-)

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**Author:** ![ElectronicsGeek](https://sea2.discourse-cdn.com/flex016/user_avatar/forums.pimoroni.com/electronicsgeek/32/87_2.png) [@ElectronicsGeek](https://forums.pimoroni.com/u/ElectronicsGeek)\
**Post date:** [November 16, 2014, 5:10pm UTC](https://forums.pimoroni.com/t/dot3k-pins/170/3 "2014-11-16T17:10:09Z")

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Cheers @jon, I’ll take a look now :-)