# Rotary encoders on DIY midi controller and Traktor PRO **URL:** \ **Category:** Controller Mappings\ **Tags:** arduino, diy-controller, rotary-encoder, traktor\ **Created:** [October 8, 2012, 1:47pm UTC](https://forum.djtechtools.com/t/rotary-encoders-on-diy-midi-controller-and-traktor-pro/48020 "2012-10-08T13:47:06Z")\ **Posts on this page:** 9\ **Page:** 1
**Author:** ![paradajz](https://avatars.discourse-cdn.com/v4/letter/p/dec6dc/32.png) [@paradajz](https://forum.djtechtools.com/u/paradajz)\ **Post date:** [October 8, 2012, 1:47pm UTC](https://forum.djtechtools.com/t/rotary-encoders-on-diy-midi-controller-and-traktor-pro/48020/1 "2012-10-08T13:47:06Z")
**Rotary encoders on DIY midi controller and Traktor PRO** I am having difficulties with understanding how does Traktor interpret MIDI data coming from rotary encoders. I am building my own MIDI controller and my encoder works fine (atleast I think): No pitchbend: 0x00 0x40 Max pitchbend: 0x7F 0x7F Min pitchbend 0x00 0x00 So, I mapped that encoder to “seek position” function in Traktor PRO but it acts all jerky: I spin the disk fast and position marker goes all crazy, left to right. No, it’s not encoders fault - I analyzed data coming from encoders and there are no skips. The only reason I can think off is that I need to code different counting mechanism for that encoder. Screenshots: Forward: Reverse: ---
**Author:** ![Stewe](https://sea1.discourse-cdn.com/flex001/user_avatar/forum.djtechtools.com/stewe/32/14607_2.png) [@Stewe](https://forum.djtechtools.com/u/Stewe)\ **Post date:** [October 8, 2012, 1:57pm UTC](https://forum.djtechtools.com/t/rotary-encoders-on-diy-midi-controller-and-traktor-pro/48020/2 "2012-10-08T13:57:14Z")
Did you set seek position in relative mode? ---
**Author:** ![paradajz](https://avatars.discourse-cdn.com/v4/letter/p/dec6dc/32.png) [@paradajz](https://forum.djtechtools.com/u/paradajz)\ **Post date:** [October 8, 2012, 2:11pm UTC](https://forum.djtechtools.com/t/rotary-encoders-on-diy-midi-controller-and-traktor-pro/48020/3 "2012-10-08T14:11:16Z")
> [@Stewe](#): > > Did you set seek position in relative mode? Yes. ---
**Author:** ![Stewe](https://sea1.discourse-cdn.com/flex001/user_avatar/forum.djtechtools.com/stewe/32/14607_2.png) [@Stewe](https://forum.djtechtools.com/u/Stewe)\ **Post date:** [October 8, 2012, 2:15pm UTC](https://forum.djtechtools.com/t/rotary-encoders-on-diy-midi-controller-and-traktor-pro/48020/4 "2012-10-08T14:15:50Z")
Well if you have set it as Encoder-relative and played with rotary sensitivity and still have no decent results then issue is with your Rotary Encoder. Tried any other controller with that same settings? ---
**Author:** ![paradajz](https://avatars.discourse-cdn.com/v4/letter/p/dec6dc/32.png) [@paradajz](https://forum.djtechtools.com/u/paradajz)\ **Post date:** [October 8, 2012, 2:42pm UTC](https://forum.djtechtools.com/t/rotary-encoders-on-diy-midi-controller-and-traktor-pro/48020/5 "2012-10-08T14:42:46Z")
Nah, I don’t think it’s that. Do you know what do encoder modes mean and what is the difference in them (3fh and 7fh)? ---
**Author:** ![Stewe](https://sea1.discourse-cdn.com/flex001/user_avatar/forum.djtechtools.com/stewe/32/14607_2.png) [@Stewe](https://forum.djtechtools.com/u/Stewe)\ **Post date:** [October 8, 2012, 3:27pm UTC](https://forum.djtechtools.com/t/rotary-encoders-on-diy-midi-controller-and-traktor-pro/48020/6 "2012-10-08T15:27:17Z")
7Fh/01h mean that value 65-127 is decrement and 0-64 is increment. Value O is center. 3Fh/41h mean value 0-63 are decrement and 65-127 are increment. Value 64 is center. ---
**Author:** ![paradajz](https://avatars.discourse-cdn.com/v4/letter/p/dec6dc/32.png) [@paradajz](https://forum.djtechtools.com/u/paradajz)\ **Post date:** [October 8, 2012, 3:32pm UTC](https://forum.djtechtools.com/t/rotary-encoders-on-diy-midi-controller-and-traktor-pro/48020/7 "2012-10-08T15:32:05Z")
Excellent, I’ll try that. Thanks. ---
**Author:** ![paradajz](https://avatars.discourse-cdn.com/v4/letter/p/dec6dc/32.png) [@paradajz](https://forum.djtechtools.com/u/paradajz)\ **Post date:** [October 9, 2012, 7:54am UTC](https://forum.djtechtools.com/t/rotary-encoders-on-diy-midi-controller-and-traktor-pro/48020/8 "2012-10-09T07:54:07Z")
> [@Stewe](#): > > 3Fh/41h mean value 0-63 are decrement and 65-127 are increment. Value 64 is center. Tried that, works! ---
**Author:** ![Stewe](https://sea1.discourse-cdn.com/flex001/user_avatar/forum.djtechtools.com/stewe/32/14607_2.png) [@Stewe](https://forum.djtechtools.com/u/Stewe)\ **Post date:** [October 9, 2012, 8:50am UTC](https://forum.djtechtools.com/t/rotary-encoders-on-diy-midi-controller-and-traktor-pro/48020/9 "2012-10-09T08:50:58Z")
Cool 👍