User Tools

Site Tools



This shows you the differences between two versions of the page.

Link to this comparison view

Next revision
Previous revision
projects:vellemanmod [2011/03/04 00:13]
Jakob Schytz created
projects:vellemanmod [2013/04/08 13:47] (current)
Line 1: Line 1:
 +==== Multivibrator mod ====
 +{{:​projects:​velleman_kit.jpg?​480|Boring non-awesome stock kit}}
 +Got hold of a Velleman kit for a Flashing LED set.
 +The kit is essentially an astable multivibrator.
 +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.
 +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.
 +{{:​projects:​velleman_mod_schematic.jpg?​480|Road to awesomeness}}
 +Finished product:
 +{{:​projects:​finished_velleman_mod.jpg?​480|Talk about recycling}}
Permalink projects/vellemanmod.txt ยท Last modified: 2013/04/08 13:47 (external edit)