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projects:vellemanmod [2011/03/04 00:13] Jakob Schytz created |
projects:vellemanmod [2013/04/08 13:47] (current) |
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+ | ==== Multivibrator mod ==== | ||
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+ | {{:projects:velleman_kit.jpg?480|Boring non-awesome stock kit}} | ||
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+ | Got hold of a Velleman kit for a Flashing LED set. | ||
+ | The kit is essentially an astable multivibrator. | ||
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+ | The kit in it self is simple, and a great way for me to learn basic soldering and so on. | ||
+ | But the kit lacks in way of usability, and I have a science project coming up with soundwaves. So it would be a great way to show some basic frequency changes in sound and how it affects the audible sound. | ||
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+ | First of all, the diodes blink at a very slow rate. This frequency is far beyond the humans perception range. The problem is easily solved with two new 100n capacitors instead of the standard 10u which allow for a much higher frequency range for the two trimmers. | ||
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+ | Schematics: | ||
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+ | {{:projects:velleman_mod_schematic.jpg?480|Road to awesomeness}} | ||
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+ | Finished product: | ||
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+ | {{:projects:finished_velleman_mod.jpg?480|Talk about recycling}} | ||