Sonic Potions - Penrose Quantizer DIY Kit

[pjbulls]

* Fuse settings for external quarz (20MHz):
* avrdude -p m328p -c avrisp2 -U lfuse:w:0xe7:m
* avrdude -p m328p -c avrisp2 -U hfuse:w:0xd9:m

Should be the same for the 168

Awesome, thanks!

[glennfin]

Can someone please point me to the latest firmware download and instructions for updating?. I could never get mine to work correctly but it has old firmware. The links in the first post are dead.

Thanks

[pjbulls]

The latest firmware is in this git repo as far as I know. Precompiled binaries are in the bin/ directory.

If you have a chip with the audio bootloader already flashed you should be able to play the bin/penrose.wav file per the instructions provided in the manual, but I haven't tried that.

You can also update the firmware (bin/quantizer.hex) via an AVR ISP programmer such as the USBasp and a flashing utility such as avrdude. If you have avrdude set up and the programmer connected to the board you can flash the firmware via a command similar to 'avrdude -c usbasp -p m328p -U flash:w:quantizer.hex:i', see for example here for some more detailed explanation.

[BartBral]

Can someone please point me to the latest firmware download and instructions for updating?. I could never get mine to work correctly but it has old firmware. The links in the first post are dead. Thanks

https://github.com/SonicPotions/Penrose In the BIN folder.
When you use the audio-file update procedure, be sure to use a stereo cable, as the update is send thru the ring of the the cable into the Penrose Trigger-IN jack. Be sure to amplify the signal enough, otherwise it won't update properly/at all.

Further update info here:
http://www.sonic-potions.com/penroseManual

Good luck!

[glennfin]

Thanks guys!.. I'll give it a try.

[mnygus]

There is bug in 1.2 firmware! When input voltage is >2.55V, ADC hysteresis is not working and sometimes Penrose can switch randomly between two notes.



I've fixed this and you can download latest fixed firmware here:

https://github.com/mgalach/Penrose/blob ... rFixed.hex

[pld]

There is bug in 1.2 firmware! When input voltage is >2.55V, ADC hysteresis is not working and sometimes Penrose can switch randomly between two notes.

It's kind of a shame the forum is still MIA, the hysteresis issue has been covered a few times (e.g. here, albeit in a different format).

There's also some other quirks in the firmware, for which I had fixes in various branches -- but since there's actually been a total overhaul by float32: github

[mnygus]

I will try overhaul, thanks!

Too bad there is not .hex, I have to fugure out how to compile it...

[BugBrand]

There is bug in 1.2 firmware! When input voltage is >2.55V, ADC hysteresis is not working and sometimes Penrose can switch randomly between two notes.

It's kind of a shame the forum is still MIA, the hysteresis issue has been covered a few times (e.g. here, albeit in a different format).

There's also some other quirks in the firmware, for which I had fixes in various branches -- but since there's actually been a total overhaul by float32: github

Yup - the thread for my bug-format version has some decent firmware as linked above: viewtopic.php?p=3121480#p3121480

[glennfin]

I don't see the firmware wav file anywhere....

There is bug in 1.2 firmware! When input voltage is >2.55V, ADC hysteresis is not working and sometimes Penrose can switch randomly between two notes.



I've fixed this and you can download latest fixed firmware here:

https://github.com/mgalach/Penrose/blob ... rFixed.hex

[Fedor]

Finished the build today (my first diy module ever!), so I need the latest firmware, too)

[BugBrand]

Oh yes, I never figured out how to make a .wav - I used a usb programmer to the 6pin ISP header (wasn't particularly comfortable with all that but figured it finally!).

[kreiff]

I don't see the firmware wav file anywhere....

I actually compiled and outputted the wav file on my machine using float32's instructions. You can download it from my google drive here:
https://drive.google.com/file/d/1v8viPz ... sp=sharing

It worked on both of my builds. Firmware update instructions are the same found here:
https://www.sonic-potions.com/penroseManual

I found that after the audio completed, I had to power cycle the module.

float32's firmware is much better. No more glitches between notes. I want to say the accuracy is better across octaves as well - but I haven't reviewed all the updates that float32 made in detail.

[Fedor]

@kreiff, thank you!

[glennfin]

I don't see the firmware wav file anywhere....

I actually compiled and outputted the wav file on my machine using float32's instructions. You can download it from my google drive here:
https://drive.google.com/file/d/1v8viPz ... sp=sharing

It worked on both of my builds. Firmware update instructions are the same found here:
https://www.sonic-potions.com/penroseManual

I found that after the audio completed, I had to power cycle the module.

float32's firmware is much better. No more glitches between notes. I want to say the accuracy is better across octaves as well - but I haven't reviewed all the updates that float32 made in detail.

Thanks!