# 3.3V Skinny/Wee with 5V Analogue Input

**URL:** <https://community.sparkfun.com/t/3-3v-skinny-wee-with-5v-analogue-input/8694>\
**Category:** MicroMod\
**Tags:** avr-atmel\
**Created:** [October 8, 2008, 1:17pm UTC](https://community.sparkfun.com/t/3-3v-skinny-wee-with-5v-analogue-input/8694 "2008-10-08T13:17:33Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![zzpza](https://avatars.discourse-cdn.com/v4/letter/z/c5a1d2/32.png) [@zzpza](https://community.sparkfun.com/u/zzpza)\
**Post date:** [October 8, 2008, 1:17pm UTC](https://community.sparkfun.com/t/3-3v-skinny-wee-with-5v-analogue-input/8694/1 "2008-10-08T13:17:33Z")

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Hi,

How would people recommend interfacing a 5V analogue signal to one of the analogue inputs on either an Arduino Skinny or Wee board?

Thanks!

Jules.

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**Author:** ![leon\_heller](https://yyz1.discourse-cdn.com/sparkfun/user_avatar/community.sparkfun.com/leon_heller/32/7602_2.png) [@leon\_heller](https://community.sparkfun.com/u/leon_heller)\
**Post date:** [October 8, 2008, 2:08pm UTC](https://community.sparkfun.com/t/3-3v-skinny-wee-with-5v-analogue-input/8694/2 "2008-10-08T14:08:12Z")

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What supply voltage do those boards use? If it’s 5V you probably don’t have a problem, apart from getting the impedance right.

Leon

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<div class="post-metadata">

**Author:** ![zzpza](https://avatars.discourse-cdn.com/v4/letter/z/c5a1d2/32.png) [@zzpza](https://community.sparkfun.com/u/zzpza)\
**Post date:** [October 8, 2008, 2:25pm UTC](https://community.sparkfun.com/t/3-3v-skinny-wee-with-5v-analogue-input/8694/3 "2008-10-08T14:25:01Z")

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D’oh! Sorry, they are 3.3V…

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<div class="post-metadata">

**Author:** ![leon\_heller](https://yyz1.discourse-cdn.com/sparkfun/user_avatar/community.sparkfun.com/leon_heller/32/7602_2.png) [@leon\_heller](https://community.sparkfun.com/u/leon_heller)\
**Post date:** [October 8, 2008, 3:04pm UTC](https://community.sparkfun.com/t/3-3v-skinny-wee-with-5v-analogue-input/8694/4 "2008-10-08T15:04:14Z")

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Sorry, you had it in your title.

All you need is a voltage divider.

Leon

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<div class="post-metadata">

**Author:** ![zzpza](https://avatars.discourse-cdn.com/v4/letter/z/c5a1d2/32.png) [@zzpza](https://community.sparkfun.com/u/zzpza)\
**Post date:** [October 8, 2008, 3:55pm UTC](https://community.sparkfun.com/t/3-3v-skinny-wee-with-5v-analogue-input/8694/5 "2008-10-08T15:55:11Z")

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i guess i couldn’t see the wood for the trees!

thanks 🙂