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| Electronic Projects Design/Ideas/Reviews Are you building an electronic project or want to? Maybe you need some assistance? Come and submit your electronic questions here and let our experienced members find a solution. |
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22nd February 2008, 08:52 AM
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 Can't find an old circuit I saw once. I hate coming to a forum and being that guy that says "I need a schematic, Thanks." but I saw a schematic for a cricket chirp generator a while back and now I can't find one anywhere. I don't remember if it uses an Op Amp, or a 555. I want to stick it under the couch, and set it to go off every five minutes then watch people try to find it. So, with that, "I need a schematic, thanks." | |
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22nd February 2008, 11:40 AM
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If you just want the finished product, there is the Mind Molester, which looks like the sort of thing you're after. If you want to build it yourself, I know I just recently saw a thread about this on this board, but for the life of me I can't find it right now. I believe it didn't use a cricket chirp but something of a higher frequency. Torben | ||
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22nd February 2008, 06:26 PM
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| That's what I'm looking for. I would like to build a simpler one. I thought I saw one that used a 555, so it wouldn't be random, but it'd still make me laugh. Plus it would be really small that way to. Thanks for the help. | |
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22nd February 2008, 06:45 PM
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| Here's a 555 version I found on my HD, no idea where I got it, never built it... | |
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22nd February 2008, 09:08 PM
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| Thanks Harvey, and Torben. That was the exact picture I saw. I had it in my favorites, but this "hobby" has turn the favorites, and files into a nightmare lol. So I think I deleted it when I was trimming stuff up. I can't wait to hide this in someones house. :-) | |
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22nd February 2008, 09:15 PM
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 Now I want to build one and see if I can't drive my wife squirrelly. Torben | ||
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22nd February 2008, 10:53 PM
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| Is this the beginning of the audio throwie?.... | |
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23rd February 2008, 11:11 AM
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Just install a weak old 9V battery in a smoke alarm. Hide the smoke alarm unter the couch. They chirp every few minutes to warn of low battery, and the chirp is so fast you can't tell where it is coming from (unless you already know where it is.) Bonus: You'll know if there is a fire unter the couch/devan/sofa/chesterfield/futon/davenport/chaise-lounge. Bob | ||
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23rd February 2008, 11:17 AM
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 After thinking about it, I think that's a good idea. Should be about a buck each, even with a battery. | ||
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23rd February 2008, 11:20 AM
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