Hi there
Great website. I am building a prop which has some fake led vu meters (only 6 LEDs). We would like the leds "meters" rise and fall in a random and varying way. There are about ten pairs of "meters" and we would to keep it as simple as possible if we can (ie: no microprocessor) with a separate circuit board for each pair. We were thinking about a sawtooth generator/pseudorandom voltage generator driving an LM3914. Each led pair should look different and vary somewhat. Thanks in advance for any ideas!
Great website. I am building a prop which has some fake led vu meters (only 6 LEDs). We would like the leds "meters" rise and fall in a random and varying way. There are about ten pairs of "meters" and we would to keep it as simple as possible if we can (ie: no microprocessor) with a separate circuit board for each pair. We were thinking about a sawtooth generator/pseudorandom voltage generator driving an LM3914. Each led pair should look different and vary somewhat. Thanks in advance for any ideas!
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. The circuit uses two oscillators with periods which aren't in a simple harmonic relationship, so their ANDed output should seem ~random. Try tinkering with their time constants to 'tune' the result to your liking.
