How to stop buttons from sending duplicate control changes?

Question

Ok, so I'm having a problem with momentary buttons on MD sending multiple on/off messages from one button press. I am trying to control Reaper via MD. I set up a button to be momentary and send a control change 21 on channel 1. For example, I'm using this button to change the pitch of an item in Reaper to change it up one semitone. Shift 9 in Reaper. I learned the button to the Reaper action. I can connect fine over wifi. Sliders and knobs work no problem. But when I press the button it changes the pitch 4 semitones. Like its sending it four times. I tried all options I could think of and if I enable "send on only" it still sends it twice and changes pitch 2 semitones.

How can I get this to only send one message? Is there and option I am missing? Is there a way to check grouping? I made a lot of similar buttons but renumbered all the cc's!

Comments

First things first. You need a MIDI monitor on the computer that Reaper is running. On Mac we use Snoize MIDI Monitor, and on Windows I think you use MidiOX (but google it). Then: are these just momentary buttons, or are they supercontrols or subcontrols? Thanks!

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Have a midi monitor (RS Midi Monitor, its vst) and its only sending one message, control change 21 channel 1 value 127. And yes just momentary buttons, no supercontrols, and no subcontrols.  I think it might be a problem with reaper. I posted on their forum too and if you don't have a solution I'll post back after I hear from Reaper forum. Thanks!

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One other thing to try is to get completely OUT of the control range of 0-32. Those are sometimes reserved. I saw the post on the Cockos forum and responded there, too: http://forum.cockos.com/showthread.php?p=1715725  ..So you might want to answer my question there (again, with the same info as here, basically) and hopefully some Reaper experts will chime in after that! Thank you!

Answer 1

Summary: With a MIDI monitor determined that messages sent are fine. The issue is with mapping in Reaper.

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This issue is on the Reaper forums here. Seems like the messages sent from MD are correct.

Comments

Jeesh, stupid error! Figured it out! I had loopMIDI installed and for some reason rtpMIDI automatically selected the loopMIDI ports in its live connection settings. So long story short I disable loopMIDI and it worked fine. RtpMIDI was double sending the messages instantly to loopMIDI and its own midi port so only one message was being shown in my midi monitor! Jeesh! What a headache! Thanks for your help and great support as always! Working great now! Only thing I could ask for in this great app would be the send toggle as momentary option! Thanks!

Answer 2

Summary: With a MIDI monitor determined that messages sent are fine. The issue is with mapping in Reaper.

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This issue is on the Reaper forums here. Seems like the messages sent from MD are correct.