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DSO Nano Displaying Flashlight Pulse Width Modulation

Just a short video of me screwing around with the DSO Nano and my Leatherman Serac S2 flashlight.

Hacking an Extra Rechargeable NiMh Cell onto an "Alkaline Only" LED Circuit.

LED with Alkalines

Celeste bought some LED lights for my bike trailer this winter (as the second half of my commute is always in the dark). They were about $20 at target and come in lots of cool colors.

They run on 4 AA batteries. I didn't notice the fine print on the packaging until we got them home and I put a bunch of Nimh rechargeables into them. The lights were horribly dim. I looked at the fine print and it basically said, 'don't use rechargeable batteries.'

iOS hardware limitations discourage long tail innovation

CSU recently hosted an iOS app development seminar with a couple apple representatives. One was clearly a sales guy, the other was the guy who spoke code.

It was interesting. I learned quite a bit about building a basic 'Hello World' application. In the end, the tech is no different than any other I've learned. (though objective-c syntax is a bit unusual compared to the other c based languages I've met.)

So, all that is fine, but I started to get a crappy feeling in my stomach when I asked this question:

Why I love the Thinkpad #37

I needed to take apart a my precious Thinkpad today. (The poor thing is getting on in years, and I needed to swap out its CPU fan.) It struck me as I was taking it apart. (something I've done many times) I don't know of any other puter manufacturer that makes it this easy on you. This is a primary reason I love the Thinkpad. It's like the Jeep of computers. Simple, easy to service, uses basic, standard parts and screws.

Arduino Time Lapse Photography IV

Not much to say here, this is the final result of my latest attempt. Took about 20 days or so. I've still got the camera in place, and I'm going to leave it shooting until that bloom falls off.

Arduino Time Lapse Photography III

The results are in! (well, offloaded from the camera anyway.) This one turned out much better. Much more consistent.

there's a bit of an unfortunate shift at the end where the bloom we really want to see gets a bit cut off, but the movement is really cool!

Arduino Time Lapse Photography II

Partial results are in! They more or less suck.. ; )

I initially set this system up and had it shoot in our living room, on a wobbley tv tray with no flash. (I figured my wife wouldn't be happy about a clamped down monstrosity and a flash going off in the dark every 30 minutes.. turns out, she's fine with it!)

Arduino Time Lapse Photography

I've been building this thing for quite some time. For the last 2 nights or so, I spent some time finishing up version 1. It is now functional. (and has taken 23 or so pictures of my desk plant in the last couple hours)

Photos of the rig (with notes pointing out the parts) can be found here:

Arduino NG Google Sketchup Model

I created a basic model of the Arduino microcontroller board in Google Sketchup. Sketchup is a really handy tool. Once you learn to use it, you can model anything and everything with arbitrary accuracy. This model is accurate down to .01mm. (the resolution of my digital calipers)

It should be a handy thing for anyone looking to prototype something digitally before they go making parts.

Arduino Stepper. Plus, how to run it off of a Makita Battery!

I put together another video of what i've been doing with my dorky geektoys. This is a cool steppermotor/gear assembly i got out of an old dot-matrix printer. I originally assembled it all with a mess of 4 radio shack transistors, but then i found this tutorial (and discovered that nice clean transistor array chip) which made it simpler to work with.


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