Sunday, November 23, 2008

Dumb ATmega8 project, Open Flash Chart

I've got the tachometer fan being driven by an n-channel MOSFET.  Was done pretty easily.  Vcc is around 7V and the input voltage is either 5V or 0V.  The MOSFET seems to be fully forward conducting at 5V so that's good.  Right now, I have the fan turning on and off every time the wireless / light sensor detects a light event.  So, that's pretty dumb so it fits with the whole theme of the project.  I'm going to try and work on this tachometer thing.  The third year electronic design paper involved using a three pinned tachometer fan so I'm basically going to be doing their project.  Hopefully it'll be easy.

Going to work a little more on the Open Flash Chart Python API as well.

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