Thank you. I have been singing the praises of this piano roll on social media since i discovered it yesterday 
Could you please just let me know regarding the renoise playhead scrolling being switched off. Is that by intent? Not end of the world just slightly annoying.
Regarding the āundoā crashes, this is āfairlyā easy to reproduce for me, if I draw something in while renoise is playing, then press undo while still playing, it crashes.
Cheers!
Currently yes. It will disable it on note editing tasks to prevent issues during playback, when it switches the pattern. I could add an option to disable this, but it could be confusing, when you edit a pattern during playback und it switches it. Thatās the reason, why iāve added this.
I tried it with the current build. Cant reproduce it yet. Maybe my last change fix it. Could test this, too? Iāve pushed the latest xrnx to github: Download
Currently yes. It will disable it on note editing tasks to prevent issues during playback, when it switches the pattern. I could add an option to disable this, but it could be confusing, when you edit a pattern during playback und it switches it. Thatās the reason, why iāve added this.
No worries at least I know itās not me doing something weird. MAYBE a āpoliteā thing to do would for it to turn itself back on once pianoroll is closed, if it was on when it was first opened. this would work for me. (maybe a user pref).
I tried it with the current build. Cant reproduce it yet. Maybe my last change fix it. Could test this, too? Iāve pushed the latest xrnx to github:
I only tried it for 15 mins but couldnāt crash it!!! Really positive!!! Will play some more tomorrow.
One final suggestion, and forgive me for not reading the manual yet so could be a reason for itā¦ to duplicate notes you hold the Control (mac) button down while in select mode. Fine. But why only in select mode? Maybe allow shift+control to duplicate parts in pencil mode. Just saves unnecessary tool switching. No worries if not possible.
All the best
Good point. There is an option to allow note moving and scaling in pen mode. So its more like the FL piano roll. With this option, note duplication with shift or ctrl shouldnāt be a problem, too. Would this solve your request? At the end, this option should mimic more the FL like workflow.
Yeah, it could backup the follow player state on piano roll open, and when the idle function is called, when the piano roll is closed, it can set it back to the old state. Iāll try to add this. Hope it doesnāt causing other quirks.
Edit: Iāve pushed another test build which allow you to do note duplication in pen mode. Just enable this option:
Bitw. hold alt key to draw notes in select mode is something iāve used for years in Reason from version 2.5 till Version 11. Muscle memory 
Fantastic, canāt wait to try it. Am out till this afternoon but back later.
Still canāt believe this exists, and not only that but how responsive & caring you are about making this into perfection. And succeeding!!!
Can I send you donation or anything? You must have put soooo much time & energy into this now.
Cheers!
Thank you, but itās not necessary. 
I was waiting and hoping for a piano roll tool in the past. One good start was Work in progress: Piano roll But was never released. After some research of other tools to learn how the API is working, i got some time to develop my own. Iām using it a lot since and its currently my way to go for melodies.
Edit: Btw. its crazy what Renoise allow us users to do with this API feature. Something we cant do in FL, Reason or Bitwig. Thatās the reason i love to work in Renoise so much.
Wow thatās an amazing attitude you have. As you wonāt take anything then may the universe bestow good karma on you good sir!
One question - is it possible to make ādeleteā(backspace on my mac) delete notes? That would feel intuitive to me. Infact other than double clicking a note i canāt seem to remove anything on the piano roll itself. Cutting (Ctrl+X) had some crazy results, removing seemingly random notes. Is this a potential bug?
Cheers!
Iāve uploaded a test build again. Backspace is working now. Del is working, too. Ctrl + X works fine for me, maybe you can record this?
Hey :-). Delete now works perfectly, thank you! Cut worksā¦ but the thing is that on MAC the shortcut for ācutā is always Command+X. So itās currently not consistent with the rest of the OS or Renoise itself. I probably confused you on the previous post as I made mistake writing Ctrl+X, sorry about that.
Cheers!
I have get an out of bounds array error.
it came up as i try to copy and move a selection with shift key. Maybe i stop keypressing little to early between the copy&move routine, because I slipped off from the shift key. //Edit Maybe i click āundoā in mainmenu before the error screen came up. dont remind me exact.
hope it helps you to locate the bug. Keep on, its outstanding tool
happy tracking
Thank you, yeah got this error sometimes, too. Its hopefully fixed for the upcoming version.
com.duftetools.SimplePianoroll V3.2 (for Renoise 3.3 / 3.4)
New update with some fixes and features.
Easy change of instruments and mix them in patterns
Its now possible to change instruments for notes. It also auto color note buttons differently, when mixed instruments are used. Its based by simple color hue shifting of the note color. Amount can be changed in the settings.
Ghost track notes can be mirrored now
So its not needed to duplicate notes over octaves to use them as guidelines for melodies.
Full changelog:
Great to see the regular updates to this tool!
thanks again for the continued efforts!
edit:
@toimp The mouse warping compatability mode seems to be working nicely. Did taktik find a solution in latest renoise release. If so is it an Lua API option? or something else. I missed what happened in later beta rounds.
Its feels abit āsmootherā now, but i think its still not very useful at least for tools like mine. Thatās the reason why iāve added this compatibility mode, so everyone who needs mouse warping can still use the piano roll tool without quirks. I use the snapback option of the XYpad control to detect left mouse button release. So the mouse cursor would jump to a specific position, when mouse warping is enabled.This can be very confusing. The compatibility disables all functions, where i need the left mouse button release state. I hope, there will be a control option in future to disable mouse warping for a specific XYPad.
I see, compatability seems to be much more usable for now at least,
like you say, hopefully there can be a complete solution in the future to avoid the XYpad stuff.
Best what you can get is native implementation.
com.duftetools.SimplePianoroll V3.3 (for Renoise 3.3 / 3.4)
Another update with a bigger new feature and some changes and fixes. Please note, preferences is now in the bottom right, but also can be accessed via main menu.
Histogram
It can be used to add randomness to volume, panning, delay and even pitch but with alot more control. Itās inspired by Bitwigās histogram feature, which iām find extremely versatile. You can affect the amount of randomness and how the values should be changed. In pitch mode, you can turn rhythmic note patterns on a specific note to ārandom melodiesā. Pentatonic sub mode is an easy go for that.
The histogram can be accessed in the top bar next to the delay controls. Jut select some notes and hit the button to manipulate them.
Iāve removed the old humanizing buttons (āHā), because its not needed anymore. Hope you like it.
Made a little video to show you, how you can use it:
All dialogs are non modal now
Iāve changed all dialogās to non blocking ones. I hope it doesnāt break anything. It feels much better, when Iāve used the histogram and see the note changes instant.
Full changelog:
Awesome
I donāt hear anything when clicking the piano keyboard, adding notes or moving them, which box do I need to check to hear the note Iām clicking/handling?
You have to open options and connecting to server or something like that. You will see it