# emonPi3 Updates

**URL:** <https://community.openenergymonitor.org/t/emonpi3-updates/26219>\
**Category:** Hardware\
**Tags:** development, emontx, emonpi\
**Created:** [31 May 2024 12:52 UTC](https://community.openenergymonitor.org/t/emonpi3-updates/26219 "2024-05-31T12:52:01Z")\
**Posts on this page:** 1\
**Showing post:** 42

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**Author:** ![Robert.Wall](https://community.openenergymonitor.org/user_avatar/community.openenergymonitor.org/robert.wall/32/38246_2.png) [@Robert.Wall](https://community.openenergymonitor.org/u/Robert.Wall)\
**Post date:** [4 August 2024 22:36 UTC](https://community.openenergymonitor.org/t/emonpi3-updates/26219/42 "2024-08-04T22:36:49Z")

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Is there anything in particular you’d like me to look at/check?

Looking at your Github page with a view to downloading this version, I noticed this:  
“CT values are interpolated between the appropriate voltage samples.”  
Do your really mean this? We’ve always interpolated between the **voltage** samples because the interpolation routine is most accurate with a pure sinusoid – and voltage is likely to be closer to this than the current. I hate to think what interpolating between samples of this current wave to generate a time-shifted exact replica would turn out like:

 ![A washing machine brushless d.c. motor on spin](https://community.openenergymonitor.org/uploads/default/original/2X/e/e91b4689643cd1f465619909189f451b5ed135d8.gif)  
or this most distorted channel made up of a boat load of CFLs ![a boat load of CFLs](https://community.openenergymonitor.org/uploads/default/original/2X/f/fb74d2e2e870f825d70be7d4acf43c1c130d65b7.png)

both contributed by @dBC.

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