# (Another) Multiple HAT Question

**URL:** <https://forums.pimoroni.com/t/another-multiple-hat-question/5951>\
**Category:** Raspberry Pi\
**Created:** [September 14, 2017, 12:45pm UTC](https://forums.pimoroni.com/t/another-multiple-hat-question/5951 "2017-09-14T12:45:28Z")\
**Posts on this page:** 1\
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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, 2017, 1:07pm UTC](https://forums.pimoroni.com/t/another-multiple-hat-question/5951/2 "2017-09-14T13:07:59Z")

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Yes, Pan/Tilt HAT uses just i2c, which is a 2-pin data bus it would happily share with Explorer HAT.

Be careful reading an HC-04 alongside these devices, though, since the overhead of both Python libraries could lead to unreliable timings and results from your distance sensor.

It’s more expensive, but I would personally use something like this: [https://www.adafruit.com/product/164](https://www.adafruit.com/product/164) since it’s much easier to work with.

That said people have got it working;

See: [Unreliable HC-SR04 with Explorer HAT Pro](http://forums.pimoroni.com/t/unreliable-hc-sr04-with-explorer-hat-pro/641)

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