The SD-Card is attached via SPI and shares a bus with the AVR and the STM32 So yes, the STM32 can access the SD-Card as well.
On the drumsynth the AVR handles the SD-Card, because I got audio dropouts when the STM32 talked to the card. But if you don't plan on doing something with 6 complicated voices at once and got some cycles left you don't need an AVR at all.
the firmware is making good progress. I think maybe another 2 weekends of work(hopefully!) I'll try to tripple check the final PCB layout for the front and order them this weekend. and then there is still parts ordering/sorting and finishing all the documentation.
My first beta tester already got a preview version of the last revision. so I think I'll need to work a lot this month and hopefully I can release the kits next month!
yeah, I think a limited pioneer run would be good. But you would also have to act as beta testers, to see if there are still some major firmware flaws, or fuzzy steps in the building manual...
I finally tripple and quadrupple checked the fronpanels and just made a big PCB order can't wait to get them! but still have to wait some weeks since i didn't want to pay the turbo extra charge. I really hope I have not overseen something crucial!;)
Very much looking forward to this, trying to save up for a kit! Glad to see that you've "sourced" a suitable case, Julian. This drum machine looks like it's going to be a brilliant piece of gear that will encourage lots of hands-on tweaking and live play.
Comments
I see that 4344's now on the main board. What about SD-card, does it still requires AVR to function or interfaces directly to STM32?
On the drumsynth the AVR handles the SD-Card, because I got audio dropouts when the STM32 talked to the card. But if you don't plan on doing something with 6 complicated voices at once and got some cycles left you don't need an AVR at all.
... can't wait to get my fingers on this
I'll try to tripple check the final PCB layout for the front and order them this weekend.
and then there is still parts ordering/sorting and finishing all the documentation.
My first beta tester already got a preview version of the last revision.
so I think I'll need to work a lot this month and hopefully I can release the kits next month!
julian
But you would also have to act as beta testers, to see if there are still some major firmware flaws, or fuzzy steps in the building manual...
can't wait to get them! but still have to wait some weeks since i didn't want to pay the turbo extra charge.
I really hope I have not overseen something crucial!;)
more info
What are dimensions of the enclosure ? I would like to clear some space on my desk so I can place this little beast