If you start from an empty data.pic file there should be no sound.
Then you can tweak the first channel.
Then select the other 3 channel.
Every trig you set come with a "green" box and it doesn't come with a "note" which is... I think... weird from an GUI user point of view.
I don't think there is bug on this side, but it's really weird I agree.
I will fix this, because today, it give absolutely no benefit.
I'm sorry you had a poor user experience at this level of development but it's still a young code.
So there is a lot to do to make it consistent on the GUI and in the kind of sound it can produce.



Ho yes... and the envelope is attack 0 and release 0 too...
So if there are not tweaked too, it produce no sound...
Not really easy to understand.
I will fix this too.

Last edited by yoyz2k (Mar 12, 2014 12:35 am)

United States

Oh that makes a bit more sense.


I've updated the git with the gui changed.
The gui has a nicer display now : you can only view the step trig.
There is a lot more to do wink

San Francisco

gonna have to try dis.


I have added some new functionnality, and many many bugfix so now you can :
- change the bpm speed ;
- play pattern at speed 1/1 1/2 1/4 1/8 ; 
- cutoff/resonance on each pattern step ;
- waveform generation speedup ;

The next build will come with song mode.
For now there is :
- no song support ;
- data.pic is not used anymore, there is one file per pattern to speed up the micro sd ; 
- only one "project", you can not have multiple song ;
- no lfo ;
- no fine tune of oscillator ;
- no amp, so you have to use the cutoff to reduce the output ;

you can test it if you have a debian x86_64, here is the build : … bian64.tgz

I will post a dingoo build later.

Last edited by yoyz2k (Jun 21, 2014 11:34 am)


Here is the opendingux build … dingux.tgz

Last edited by yoyz2k (Jun 21, 2014 11:27 am)


Here is the video recorded from my laptop with recordmydesktop and audacity : …


Here is the new build of Picoloop, so many fix and some new feature :
- change the swing from 25 to 75 ;
- pitch lfo ; 
- vco phase ;

The next build may come with song mode but for now it's not so important for now :
- no song support ;
- no amp, so you have to use the cutoff to reduce the output ;

I've added lot of pattern to check the sound it can produce.
The youtube video is not really up to date on this.

You just have to unzip and launch it.
IMHO, for debian, you should git clone it from the repo because a lot of library are in dependency.
For the opendingux it should work directly.

New debian build : …

New opendingux build : …

Last edited by yoyz2k (Jul 19, 2014 1:18 pm)


Version 0.2 is out.
Now there is three different instrument in.
Picosynth : a basic VA synth with a biquad VCF
Picodrum : a VA drum  with a biquad VCF
Dbopl : an OPL2 synth from bsa, see the  "YM3812 (OPL2) VST INSTRUMENT" thread for more information

It keep the basic look and feel of nanoloop 2.X.
It can be fetched from :
The manual is here :


Hi there, I've made my first track with picoloop.
I've used also my novation x-station "303" program to make a bassline to it, my dingoo 320 play picoloop.
In this track you will hear the picosynthdrums and the opl2 synth from BSA, the low bassline is my novation synth.
I hope you will enjoy the "sound engine". The song was recorded on the fly without thinking too much about it....

Download software for opendingux : …


Last edited by yoyz2k (Sep 13, 2014 6:11 pm)


So, no one use a dingoo ?


This project sounds/looks great! Would love to try it out, but I don't have a dingoo, no. sad

I would love to see a video!

Geneva, NY
yoyz2k wrote:

So, no one use a dingoo ?

I do. I'd be willing to give this a try. Is there a .dge file I can download?


Thank you Bleo, Here is the one I use today on my opendingux : …

One thing, the apps take near 40s to start, because it compute all the waveform, so you will see 16 box which are frozen.
Then it start.

The zip contain :
- picoloop.dge : the apps ;
- pattern :  dataP*  which are saved in the zip, so you can hear how it sound on my test pattern ;
- two file font.ttf and font.bmp which are not optional ;

I suggest you to put all file in a directory on your opendingux.
If you have trouble to understand the keypad, you can use the nanoloop 2.X documentation.
my documentation is really average.


Last edited by yoyz2k (Sep 15, 2014 6:50 pm)


The MAC menu let you choose:
- psynth : a basic VA synth with two oscillator and an amp ADSR
- opl : the dosbox/bsa opl2 synth
- pdrum : a VA drum synth

The FX : let you put some delay

The AD: let you browse the two ADSR
Only the first ADSR is use for psynth and pdrum
Opl2 use two operator so two ADSR

L/S : is the load/save there will be song in it soon