Playing music with an AVR microcontroller
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Uploaded by mikoro1 on Apr 5, 2008
Music is sent via UART to the microcontroller which then does the digital to analog conversion with PWM.
Details:
- microcontroller runs at 18.432 MHz
- sound sample rate is 11520 Hz and precision is 8-bit
- UART baudrate is 115200 bps
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Uploader Comments (mikoro1)
Top Comments
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nice project - gay sound
2 years ago 17
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Hi, check the AVRFreaks site - especially the forums and its tutorial section.
Video Responses
All Comments (27)
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hurray for 8-bit music!
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sounds decent. what's the PWM frequency? clock divider
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@mikoro1 WOW I see that i've many things to learn about microcontroller.. I know that an electronic drum is not very easy but I have this idea in my head ..
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@mikoro1 nice what could i do to do that :P
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@xcape77 ignorant fuck is ignorant
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Good job on the avr dude it works amazingly well
how exactly does youtube know the name of the song if it was IN the video?
they must have a pretty good sound recognition software,
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Is the speaker connected to the PWN pin? I see you need your computer, but can you put the music on, for exemple a separated memory? I wanna do an electronic drum with a pic or an AVR but I don't understand how to play music with it. I've heard some "Happy birthday" on a pwm, and it's not what I'm looking for.. I ean I don't wanna have a bad sound for the drum sounds..
(I'm french..)
Thx
killthebetrayer 1 year ago
@killthebetrayer Bonjour, yes it is. You can definitely put the music on an external memory. Check out the video response by Peterlsza for example.
mikoro1 1 year ago
does it work with arduino?
robot797 1 year ago
@robot797 Can't see any reason why it shouldn't work
mikoro1 1 year ago
I did something very similar to this. I was wondering about your electrical connections: Am I seeing wrong, or are you driving the speaker directly from the AVR I/O pin without a transistor. If so, are you sure the pin is not sourcing too much current?
AVR models I know are rated at 40 mA per I/O and a speaker this size is typically 8 ohm/0.5W. With these numbers, even at 2.7V, you are outside specifications for both (338 mA, 0.9W)...
phaub 2 years ago
Yeah, you're right. But it worked, at least for the few hours a played with it. I later did a version with an op-amp in between which had much better sound output. And the controller didn't heat up as much... :)
mikoro1 2 years ago