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Circuit help Answered

so, my brother tasked me with making him a customizable doorbell for his house for Christmas (of course he didn't tell me till last week, but whatever). looked around at a bunch of stuff online and found a few decent items. some of them use those voice recorder modules from radio shack...which  might work, but I've used them before and they're pretty quiet. also, not the best sound in general from the mic used to record to them. so I found this thing http://spritesmods.com/?art=doorbell&page=1 which is a riff on this thing http://elm-chan.org/works/sd8p/report.html  which uses an ATTINY85 to play audio via the PWM output from an SD card. I like this guy because it's gives more options for sound and is generally more "gee whiz". however, the guy built it from scrap parts and has some admitted flaws in it, notably the power supply and the audio amplifier. so, I'd like some help figuring out how to build the same thing, but with a more "correct" power supply and amplifier. also, not exactly an electronics wizard so the fact that there are a billion different chips listed as ATTINY85, I wouldn't mind if someone can make a more sensible parts list (there aren't that many parts). I plan to trigger the thing with an off the shelf wireless doorbell type thing.

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crapflingercaitlinsdad

Reply 3 years ago

jeez...they've had a run on those things. all but the minis are sold out....

so, das what I got. got the mini 16mb one, with one of the amplifier circuits and a couple of speakers. i'll post when I get the gremlin working.

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crapflingercaitlinsdad

Reply 3 years ago

I've been lurking. not many things that I felt the need to comment on...soooo /me waves

yeah...that gremlin, and it's other variants do look quite a bit like what I'm wanting to do....which is why I always ask for help here for this stuff. because you guys usually know of something that does exactly what I want that I've never seen.

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Downunder35m

3 years ago

Why is everybody going micro processor these days?
Just take cheap MP3 player, add a single song and wire the play button to the door bell switch.
If fancy add a wallwart instead of the batteries to power it - all up for under 20 bucks off Fleabuy.

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crapflingerDownunder35m

Reply 3 years ago

cuz they're more fun? also, don't want a single song. I want multiple sounds. either randomly played, or sequentially played. maybe even other options if I so choose.

not exactly as easy to do that with a POJ mp3 player