This is the place for any magazine-related discussions that don't fit in any of the column discussion boards below.
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I would like to pay someone to send me a working example for a 7x7 matrix bar graph display. Each bar would respond to a different frequency with input through a mic. I would like to use ultra-brite LEDs for the project. Any advice would be greatly appreciated as well. Please contact me for more details. I have a schematic and info on making one, but I am looking for the least expensive route. <p>Bryan
Which approach is least expensive depends on how many you will produce. A digital signal processor would have the lowest component cost but the development cost would be higher than an analog approach. I am not willing to pay for a long distance phone call, how about an email address?
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