Posted: 12/17/2012 6:34:25 AM EDT
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I started building an electronic predator call. I'm using a 15 watt speaker and an amplifier I built from scratch. The entire amp/speaker system is powered by one 9V battery which may get upgraded later if need be. When it's fully finished I'll upload the picture or maybe a video of me using it. Now I'm just playing the waiting game for all the parts I ordered to get here and assemble it fully.
This is what the amplifier circuitry looks like 
This will be what the actual caller looks like when finished (well almost still have to add the 3.5mm jack for the mp3 player and the on off switch). 
This project only cost me roughly 40 dollars for everything minus the mp3 player which I already have. This will be an ongoing project that I will eventually be adding a microcontroller with mp3 capabilities so I don't have to carry around my mp3 player while I'm out hunting, and hopefully wireless capability. If I decide to do that I'm going to try and find a bigger battery that will allow me some extra play time and power all the extras. I might also go with a smaller enclosure as my circuit board is only a few inches so I don't really need an enclosure that big. So now what else can/should I add to it to make it more functional? |
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I used the Radioshack amplifier with good results, but I have yet to try it. I added the speaker and a water-tight project box to a piece of plywood. Spray painted it my own ghetto camo afterwards..
Next time you're at Walmart, check out these water-tight boxes in the camping section. They have pretty nice silicon rubber seal, and accept paint really well. http://i306.photobucket.com/albums/nn272/rrudzi/waterproof.jpg GB 
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