magician13134 wrote:what frequency does this need to be?
magician13134 wrote: The chip I'm ordering (Mega328) says 20MHz, but that's always confused me, does that mean I can't use higher than that? Or does it mean that for higher frequencies I'll need an external resonator/oscillator? I looked through my resonator drawer and found some "20.00MX", will that work? Thanks
magician13134 wrote:And I'm having trouble finding good, cheap switches. On the MintyMP3, there's those nice right-angle switches and that very cool (I'm guessing) volume control switch... Does anyone know a good brand of those? Preferably on Mouser?
magician13134 wrote:I'm actually thinking that USB may not even be the best idea, at all. Any firmware upgrading could be done through an ICSP header and charging could be done through a DC jack, while songs are transferred to the SD card manually with a card reader or something.
That's the one I was referring to when I said I had some good resources. Great minds think alike (Or at least click on the same Google links )trialex wrote:Here's one link talking about the STA013 - even a good "plain english" explanation of getting the mp3 data into the decoder:
magician13134 wrote:Alright. And one more thing. If I wanted to use a rocker switch like that for volume control... How would I (could I?) do that? Would I need a digital potentiometer? What would be the best solution there?
magician13134 wrote:Very nice find, Amberwolf! Only problem is, can you read the current volume with a micro then? If I have a screen, I'd like to show the volume level on it...
Could I run the LED outputs (mode select and such) into the ATMega to figure out about where the volume is? Or is there another pin on there that I'm overlooking that would help me do that?
Other than sampling, is there anywhere I can get these Maxim ICs? I was also looking at using one of their charging chips for the battery. (I did sample a couple of those chips, though, so I'll be able to do some testing soon). Also, I was thinking...
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