# Arcade console with 3.7 volt expansion board/LED video

**URL:** <https://forum.makecode.com/t/arcade-console-with-3-7-volt-expansion-board-led-video/963>\
**Category:** Arcade\
**Created:** [December 31, 2019, 11:19pm UTC](https://forum.makecode.com/t/arcade-console-with-3-7-volt-expansion-board-led-video/963 "2019-12-31T23:19:32Z")\
**Posts on this page:** 1\
**Showing post:** 4

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**Author:** ![kjw](https://avatars.discourse-cdn.com/v4/letter/k/e79b87/32.png) [@kjw](https://forum.makecode.com/u/kjw)\
**Post date:** [January 1, 2020, 9:34pm UTC](https://forum.makecode.com/t/arcade-console-with-3-7-volt-expansion-board-led-video/963/4 "2020-01-01T21:34:54Z")

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An interesting video. I hadn’t realised there were different versions of the Meowbit, the description mentions 1.1 and 1.3.

I can see an HC-SR04 in [https://www.youtube.com/watch?v=zCbyED554ro](https://www.youtube.com/watch?v=zCbyED554ro) . I think that’s being powered from 5V. That means the echo output will be at 5V and the micro:bit isn’t 5V tolerant. Are you reducing the 5V to around 3.3V or the micro:bit’s supply voltage? You can see that being done in my example and on others like [https://www.teachwithict.com/hcsr045v.html](https://www.teachwithict.com/hcsr045v.html)

[New device: Kitronik ARCADE](https://forum.makecode.com/t/new-device-kitronik-arcade/715/13) mentions a bluetooth addition for the Meowbit in SD card form.

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