Monthly Archives: February 2008

Thing-a-day, Day 5: Tri-color LED matrix

Posted on February 6, 2008 by mahto

I ordered a bunch of these nifty three-color LEDs for no particular reason, and they happened to show up today. I ran out and picked up a protoboard from Radioshack, and assembled them into a grid as seen here. This … Continue reading →

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Thing-a-day, Day 4: Mailbox Flag for my Inbox

Posted on February 5, 2008 by mahto

Ok, this is getting ridiculous. I’m going to have to find some easier projects lest I run out of energy. Anyway, tonight’s project is a physical flag that attaches to my computer and goes up when I have new mail. … Continue reading →

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Hike with Mike

Posted on February 4, 2008 by mahto

In reality though, what I did today was visit my friend Mike at his new house, and we went on a nice hike up Finger Rock Canyon. The weather started getting really ugly so we didn’t go all the way … Continue reading →

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Thing-a-day, Day 3: High speed water photography

Posted on February 4, 2008 by mahto

I attempted a delay-flash circuit to photograph water droplets. The idea is that the thing is triggered by the water droplet as it falls down, then a circuit delays for a while before flashing some bright LEDs. Well, the circuit … Continue reading →

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Thing-a-day, Day 2: Light Chaser

Posted on February 2, 2008 by mahto

I’m not trying to start an optical theme here, but this is my project for day two. Its a simple light-chasing circuit. It uses the 555 timer project we made at our workshop as a clock to drive a counter … Continue reading →

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Thing-a-day, Day 1: Light Record

Posted on February 2, 2008 by mahto

So, I signed up to participate in thing-a-day (my posts there). The idea is that you complete one (smallish) project per day, and blog about it. Since I am pretty close to doing that anyway, I didn’t think it would … Continue reading →

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