# Expression Pedals & Boss RC 300 **URL:** \ **Category:** Organelle\ **Created:** [February 4, 2018, 2:12am UTC](https://forum.critterandguitari.com/t/expression-pedals-boss-rc-300/2384 "2018-02-04T02:12:29Z")\ **Posts on this page:** 1\ **Showing post:** 13
**Author:** ![healthylives](https://yyz1.discourse-cdn.com/flex035/user_avatar/forum.critterandguitari.com/healthylives/32/1237_2.png) [@healthylives](https://forum.critterandguitari.com/u/healthylives)\ **Post date:** [February 6, 2018, 9:24pm UTC](https://forum.critterandguitari.com/t/expression-pedals-boss-rc-300/2384/13 "2018-02-06T21:24:10Z")
Could anyone point me to an existing patch that ‘attaches’ an expression pedal to function (as one would a knob)? I also saw this old thread from about a year ago that makes it seem that mother.pd needs to be modded to get the M-audio Exp to work. That seems scary. Paging @jhindsight, are you still rocking with the pedal a year later? > [@Hacking the Organelle to work with expression pedal + feature request](http://forum.critterandguitari.com/t/hacking-the-organelle-to-work-with-expression-pedal-feature-request/919): > > Hi all, Just bought an Organelle and was really excited to get cracking with it. I also bought this expression pedal [http://www.m-audio.com/products/view/ex-p](http://www.m-audio.com/products/view/ex-p) (cos it was the cheapest and i’m cheap) but found that it wouldn’t trigger any patches which used the footswitch input. I connected a monitor, mouse and keyboard so i could view the values generated on the Organelle. I found that r exp was receiving values between 0.050 and 0.555 which i don’t believe is enough to trigger the 1/0 toggle o… Would the Roland EV-5 work without that type of mod? This is all very new to me, sorry for all the questions. --- _[View the full topic](https://forum.critterandguitari.com/t/expression-pedals-boss-rc-300/2384)._