# \#io
**URL:** https://forum.djtechtools.com/tag/io/9887.md
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## [Encoder hook up Midi Controller design HELP!](https://forum.djtechtools.com/t/encoder-hook-up-midi-controller-design-help/73952)
**Author:** [@vinobambino13](https://forum.djtechtools.com/u/vinobambino13)\
**Replies:** 2\
**Last updated:** [May 7, 2016, 9:52pm UTC](https://forum.djtechtools.com/t/encoder-hook-up-midi-controller-design-help/73952 "2016-05-07T21:52:26Z")
Encoder hook up Midi Controller design HELP! I am building a midi controller and I need help with hooking up an encoder with a switch. I also need to know how many I/O Ports it would take up on my arduino board. Any and…
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## [4 Deck External Mixing With Mono Outputs?](https://forum.djtechtools.com/t/4-deck-external-mixing-with-mono-outputs/70636)
**Author:** [@DJ\_Now](https://forum.djtechtools.com/u/DJ_Now)\
**Replies:** 3\
**Last updated:** [March 27, 2015, 12:52am UTC](https://forum.djtechtools.com/t/4-deck-external-mixing-with-mono-outputs/70636 "2015-03-27T00:52:09Z")
4 Deck External Mixing With Mono Outputs? Hi, :stuck\_out\_tongue: Just wanted to know if there are any disadvantages to mixing externally using a 2 stereo channel sound card (eg NI Audio 2) especially when it comes to s…