Tuesday, April 20, 2010

TI-83+ Calculator Intervalometer

I mentioned a while back in this post that it's possible to make an intervalometer from a calculator. I actually entered the code listed on the tutorial into my calculator weeks ago, but today I finally got ahold of a 12mm audio jack (link cable). I'm happy to report that it works.

See it on Flickr.

As stated in the guide that showed how to convert the calculator to an intervalometer, I seem to have gotten some slight variances in time between shots. Apparently the accuracy of the intervals is determined by the freshness of the batteries. Unfortunately, even slight variances are pretty noticeable in time-lapse. You'll see that the video above appears slightly "choppy." I'm also convinced that having a video editor that will do 1-frame-photos will also help me smooth out my videos a lot.

I can't remember the last time I changed the batteries on this calculator, and it gets used for Calculus homework almost every day. So before I get too upset about the inaccuracies of the calculator, I think I'll put in some brand new batteries and try again.

This was a test run; from now on I'll try to to shoot time lapses that have more points of interest than clouds moving in the sky and my little brother lounging around on the trampoline. 


  1. How about jumping on the trampoline?? :) That was very cool! I don't know what you did, or how you did it; but that was badass!

  2. Fun! Maybe my daughter will take calculus next year and have to get a fancy schmancy calculator I will then "borrow" to try this! (Actually, she'll only be a freshman next year so will probably take geometry as she took Algebra this year. Still...maybe she'll need the calculator anyway?)

  3. Nice. I assume that we you? It looks like a lot of fun.


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