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Output is fixed to PA8 because on almoust all STM32 boards it's default output for timer 1, channell 1. It can be edited to use different pin.

Oh I see that's awesome. I got this to work on some blue pill boards that I had in my shop. I wonder if the timer could be adjusted so that this would work on an ARM board. I've got some SAMD21 and SAMD51 boards laying around. Since those have DAC's I could forgo the RC lowpass filter. Thanks for this library sir! I really appreciate it.

@@tb303wpf1 It shouldn't be that hard to change it. Just change in STM32SAM::begin to pinMode(pin, OUTPUT) and STM32SAM::SetAUDIO to analogWrite( main_volume).

Nice! Thanks for the info brother. I'm going to give that a try after I finish debugging this code I'm working on now. Man hearing this SAM talk reminds me of being a kid again. I absolutely love this library. If I get it working on the ARM boards I'll send you a copy of the modified library in case you want to play around with it.

In V2 hardware i swaped OE nad LE pins placement because i rotated Arduino Nano 180 degrees on pcb (plus some other cosmetic changes). But it is same thing. Also, i added few animations in V2 software. I'll add picture of V2 to github.

​@@bakisha noted,thankyou for help

No, no need to change the code. You could use 8 NPN transistors. Just don't forget to add resistors for the base of transistors.

Thank you for replying to my comment 🙏🙏🙏. I've tried using a transistor, but haven't attached the resistor to the base and the animation is not the same as in your TH-cam video. is that what caused it?

@@brazagan-jq7se Resistor is to protect 74HC595 output pin (ULN2803 have one built-in). There are two versions of animations on github, i can't recall which one i used for this video. First one, i guess...

@@bakisha noted,i will try add resistor and thankyou so much

​@@bakisha Is there a way to adjust the brightness of the LED? I've made exactly what you've made, but the LED doesn't look bright enough.

In theory, yes. It won't be best SID emulation like ArmSID, but it would do the job. Check github.com/Sgw32/UltiSID/tree/hal_usid , that guy tried, i don't know the details. I was thinking to try it with WeAct board with STM32G431CBU6, it had 12bit DAC, and is cheap enough to try and mess around with it.

@@bakisha I think it is worth a shot because SwinSID is still selling and it is terrible. ArmSID is good but it sells almost for the price of a real 8580. There is a huge market gap for something that costs similar to a SwinSID but performs better. Doesn't need to be as good as ArmSID (even that has tiny glitches) as long as it is significantly better than SwinSID (not a hard competition there) it will do very well in the C64 community.

@@borayurt66 I don't think ArmSID is expensive (i can't cay about shipping costs), considering time and effort put in designing and manufacturing hardware, plus software is still getting upgrades. I don't say it can't be done, but surely i am not able to do it. This (and all my other projects), are just messing around on breadboard with cheap chinese modules. And i'll support anyone who tries it. At least, moral support, financial support is not my thing 🙂

​@@borayurt66If you can get a SID for the same price as an ArmSID, you've _very_ lucky! I see SID chips going for about 80EUR+, while the ArmSID varies between 35EUR and 45EUR.

Biggest cube i could find is 16x16x16. In theory, for single color 32x32x32 you'll need 32768 leds, 132 74HC595 and 32 p-type mosfets. But 4x4x32 is quite possible...

No

@@bakisha can you suggest me any tutorial. I want to build an mp3 player using stm32

If you want to use built in Arduino SD library, go to File>Examples>SD from Arduino IDE menu. Tutorial how to use is at www.arduino.cc/en/Reference/SD . In this project, i used SdFat library from github.com/greiman/SdFat (try example from github.com/greiman/SdFat/blob/master/examples/OpenNext/OpenNext.ino ). It should work on both ( stm32duino or Roger's ) cores. Your pinout is good, but i think with built-in SD library you need to manually set CS pin LOW before accessing sd card.

Thank you. I was really having fun while doing this project :-)

Default pins for SPI1 on bluepill is MOSI: PA7, MISO: PA6, CLK: PA5. CS can be any pin.

@@bakisha thanks alot my friend but is there anything i have to add to my code includes ? I mean Except spi.h and sd.h ?

@@essouaiedameur7642 you'll need to include SD.h. just look at examples for stm32 cores.

Sorry, somehow i missed to see your comment. Yes, it is running fake6502 emulator. Emulation is slower compared to real C64, but it is executing only code that is needed in interrupt routine of real C64 (music subroutine that is called once every 20mS) . It is somehow "stretched", but it fast enough to do both 6502 and SID emulation, and only purpose is to play sid files (which is just custom code that store values to $D4xx memory area). Emulator is instruction based, not cycle based, so exact timing of writing to $D4xx is incorrect, but, as you see, it plays music fine. Not as real SID, but it sound enough "SID-ish" to me.

Hi. Unfortunately, I am not familiar with any inner working of sample based chips, nor any emulators for them. I am not even familiar with stuff in music synthesizers, but I do like the sound of it. Feel free to use any code from this project in your projects, if you think it's usefull. This project was possible for me only because I once had c64, so I had idea how to implement it with hardware timers and interrups on stm32. Every synth I found on Internet used sample buffered output, and that was something I couldn't get my brain to understand. But i'll keep an eye on your projects, they are quite interesting.

I can't help much. Check your hardware. Is Latch and Output Enable pin properly set in sketch? Is layer's 595 first or last in line?

Did you download library "LedCube.zip" from the link in the description ? Not "LedCube(old V3.0).zip" (that is old library). I just tried it, it compiled fine (Arduino IDE 1.8.12)

Thanks and good luck with your project :-)

I'm glad you like it :-) Still have few stuff to add, but mostly to player's code, SID emulation code is already as best as i can. Maybe adding LCD for showing sid file info, or file manager to select file from sd card. Or both, just like in your videos :-)

@@bakisha I wanted to use my protoboard with ST7735 (look at my channel for more details) which already has SD socket for displaying some menu, maybe even equalizer bars :)

@@cbm80amiga Yeah, i also have ST7735 with SD on protoboard, and i tested almoust all codes from your github (thanks again for sharing) . The problem is that once sid file is playing, there is very little time for CPU to do anything else. SID emulation is all done in interrupts, while 6502 emulation is done in main loop (and is very often interrupted by interrupt). There is small time (around 7mS, every 20mS) when 6502 emulation is not running, but that is very little time for LCD to show heavy anymation (because it is still interrupted by interrupt). Overclocking bluepill helps a lot, but for now, i'm using that speed boost to improve sound quality of SID emulation (meaning interrupts are triggered more often). LCD is on my TODO list, for now i'm focused on improving (and simplifing) code for file loading .

@@bakisha Good to know. I expected that this emu stuff takes most of MCU time. Very nice project. Good luck with improvements! Did you consider to use other cheap MCU like ESP8266 which has little more resources?

@@cbm80amiga ESP8266 have lot of RAM and CPU power, but unfortunately it doesn't have hardware PWM. And with Bluepill's hardware PWM it can go down to 1/72 microseconds pulse on a pin. Some lowpass filter on output, and it is as true analog output.

Wrong core. Set in preferences: github.com/stm32duino/BoardManagerFiles/raw/master/STM32/package_stm_index.json and search for stm32 in board manager. At first, i used that core , but i switched because it supports more boards. I'll look into source code again, most of code for dan.drown.org/stm32duino/package_STM32duino_index.json core is there, just commented out because i switched cores (and i like it because it can overclock). I am just little confused of naming "stm32duino", they both use same name

I have updated source code, it can be compiled now for cores with Maple bootloader

Thanks!!! It's working now! Cool Project!

You can find Lupus ICS/GB v7 kernel at forum.xda-developers.com/showthread.php?t=2167766 It will work with Lupus ICS v12 kernel and even with Doomlord's ICSbeta V3 kernel. Or if you want Doomlord's ICS v3 or Lupus ICS v12 with custom partitions size (custom=same as Lupus ICS/GB v7) you can try kernels at forum.xda-developers.com/showthread.php?t=2637637 This ROM work on all ics-beta based kernels (even work with turbo kernel, but in turbo-kernel video and photo camera don't work)