# Midi control surface?

**URL:** <https://www.ruby-forum.com/t/midi-control-surface/232900>\
**Category:** GNU Radio\
**Created:** [November 3, 2014, 1:37pm UTC](https://www.ruby-forum.com/t/midi-control-surface/232900 "2014-11-03T13:37:30Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![addis\_a](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/a/c4cdca/32.png) [@addis\_a](https://www.ruby-forum.com/u/addis_a)\
**Post date:** [November 3, 2014, 1:37pm UTC](https://www.ruby-forum.com/t/midi-control-surface/232900/1 "2014-11-03T13:37:30Z")

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Hi, does anyone know if it’s possible to add midi control to sliders in  
gnuradio-companion?

I have a lot of sliders I wish to cintrol with hardware.

If not midi what is the preferred way to add hardware knobs sliders (  
control surface) etc?