# Prototyping DIY Expression Pedal interface for Kosmo

**URL:** <https://lookmumnocomputer.discourse.group/t/prototyping-diy-expression-pedal-interface-for-kosmo/649>\
**Category:** KOSMO MODULES\
**Created:** [April 17, 2020, 1:18am UTC](https://lookmumnocomputer.discourse.group/t/prototyping-diy-expression-pedal-interface-for-kosmo/649 "2020-04-17T01:18:51Z")\
**Posts on this page:** 1\
**Showing post:** 6

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**Author:** ![analogoutput](https://yyz2.discourse-cdn.com/free1/user_avatar/lookmumnocomputer.discourse.group/analogoutput/32/29663_2.png) [@analogoutput](https://lookmumnocomputer.discourse.group/u/analogoutput)\
**Post date:** [April 18, 2020, 1:13pm UTC](https://lookmumnocomputer.discourse.group/t/prototyping-diy-expression-pedal-interface-for-kosmo/649/6 "2020-04-18T13:13:16Z")

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I’m talking about using a pedal with only a 12k pot (in series with a 50k low limit pot as variable resistor, which however could be set near zero):

 ![image](https://global.discourse-cdn.com/free1/uploads/lookmumnocomputer/original/2X/1/155750ae84282482afb6a996c76c6f7346dbc112.png)  
in which case you’d presumably want the 10k fixed and 100k pot at the front to be more like 1k and 10k. But yeah, I was thinking wrong about the max current. In that case 12 / (1k+10k||12k).

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