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By: KenCorey (offline) on Thursday, January 22 2009 @ 03:46 PM PST (Read 3528 times)
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Well, I have found a way to solve my obsession with sounds on my Meggy...
I have either blown the little speaker or the circuitry controlling it.
Now, even when I know what the sound is supposed to be in a program, I hear a tiny click when the sound is supposed to start, and nothing else.
I guess it's time to stop playing with the speaker like that.
*sigh* Windell, how much to send a replacement speaker and transistor to the UK?
-Ken
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Henchperson
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Registered: 01/02/09 Posts: 22
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By: KenCorey (offline) on Thursday, January 22 2009 @ 04:23 PM PST
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After some more investigation, it turns out I must have blown something other than the speaker.
I had a pair of airline headphones lying around, so I broke it open and took the speaker out of one side. I unsoldered the speaker from the Meggy, and solder this in its place, and then soldered the Meggy speaker on the end of the headphone cable.
The headphone speaker attached to the Meggy acted exactly the same.
The Meggy speaker attached to the headphone cable worked just fine.
I can only assume that I blew something on the Meggy.
If it were the transistor, then I likely wouldn't get any sound at all...
So, that means it must've been the OCR1A output pin on the 168p chip itself, right?
Any suggestions about how better to track this down?
Well, looking at the bright side, this might just be a reason to get a 328P after all.
-Ken
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Henchperson
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By: Windell (offline) on Thursday, January 22 2009 @ 04:27 PM PST
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Well, er... what did you do?
I found the same condition on one of ours once-- even replaced the speaker and transistor, but that didn't fix it, so I was pretty freaked out about it. However, and to my *great* surprise, reprogramming *did* fix it, though.
Windell H. Oskay
drwho(at)evilmadscientist.com
http://www.evilmadscientist.com/
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Evil Scientist
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Registered: 06/15/06 Posts: 1932
Sunnyvale, CA
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By: KenCorey (offline) on Thursday, January 22 2009 @ 04:43 PM PST
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Geez.
I really must remember not to post after midnight.
Remember when I said I had been working on a sound library, and hadn't had much luck?
The broken sound version of the library was still in place...of course, once I replaced it with a vanilla 1.3 and recompiled, donkey kong in all it's auditory glory. Hey, and with this new speaker, the sound is even better than with the piezo.
This is my public service bit:
If anyone feels like they've done something stupid, all they have to do is come back and look at this topic, and they'll be reassured:
"At least I'm not as stupid as that guy"
*sigh*
-Ken
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Henchperson
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By: Windell (offline) on Thursday, January 22 2009 @ 04:51 PM PST
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On the contrary-- At least you're not the guy who actually *did* replace the speaker and transistor!
Careful with that other speaker-- it may have much lower current and draw much more current; you may want to add a resistor in series with it to prevent it from blowing out.
Windell H. Oskay
drwho(at)evilmadscientist.com
http://www.evilmadscientist.com/
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Evil Scientist
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