Separate Penrose PCBs and Panels are now also available in the shop. Sourcecode can be found on GitHub. Schematic and BOM are linked in the assembly guide
anyone up for beta testing a bugfix update for the Penrose quantizer? In the continuous mode the CV in was too sensitive, so with a CV exactly between 2 notes the quantizer could not decide on a note and rapidly toggles between 2 active steps.. It also could lead to slewed transitions between notes.
it's not a real slew. more like a PWM crossfade between to fixed states. It cant decide between 2 steps and jumps between them really fast. The more the CV reaches step 2, the more often it jumps to the 2nd value. But this results in some kind of audible slew.
I played a little bit with the new firmware as well and it seems stable to me.
Tested yesterday Penrose in combination with my RYO VC sequencer and a TH 4046 VCO and stumbled into this bug. But being honest i think this is more feature i like and will not update in the near future...
Did update the firmware (this time it went smoothly, I'm an expert now! ) and tested it a bit today. So far it seems to run without any jumping around, I used some LFOs at various speeds and attenuation levels. Of course if the LFO is fast it will jump around on notes... but I didn't notice any glitchy jumping. I should mention that I didn't really notice it before since usually I'll trigger the Penrose from a clock division or from the Yarns
just finished building and testing my penrose last weekend. it is a great kit! amazing build-guide and very useful tool in a modular set up. many things in my modular case became hugely 'expanded' in combination with penrose. it is also instantly inspiring in terms of interface and directness/simplicity in use. thanks a lot for making this possible julian. looking forward to more developments.
Comments
Sourcecode can be found on GitHub.
Schematic and BOM are linked in the assembly guide
In the continuous mode the CV in was too sensitive, so with a CV exactly between 2 notes the quantizer could not decide on a note and rapidly toggles between 2 active steps.. It also could lead to slewed transitions between notes.
I added a hysteresis to the CV input processing that should fix this.
Here is the firmware audio file:
https://github.com/SonicPotions/Penrose/raw/master/bin/penrose.wav
I'd be happy about some feedback before I make an official announcement
So far only 1 person has found and complained about the bug anyway
It cant decide between 2 steps and jumps between them really fast. The more the CV reaches step 2, the more often it jumps to the 2nd value. But this results in some kind of audible slew.
I played a little bit with the new firmware as well and it seems stable to me.
Penrose is absolutely awesome !
Here is a hex file with bootloader and firmware combined.
https://github.com/SonicPotions/Penrose/raw/master/bin/FirmwareAndBootloader.hex
I see you want to make good use out of your new AVR programmer
Yes, I need to justify having spent 5€ on it!
Of course if the LFO is fast it will jump around on notes... but I didn't notice any glitchy jumping.
I should mention that I didn't really notice it before since usually I'll trigger the Penrose from a clock division or from the Yarns
it is a great kit! amazing build-guide and very useful tool in a modular set up.
many things in my modular case became hugely 'expanded' in combination with penrose.
it is also instantly inspiring in terms of interface and directness/simplicity in use.
thanks a lot for making this possible julian.
looking forward to more developments.