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Tips & Tricks

Photography Hack: Use a Calculator as an Intervalometer to Make Timelapse Videos

By Hanssie on September 4th 2014

One of the course requirements in my Algebra 2 class was to buy an overpriced, gigantic graphing calculator. It cost around $80 and like Algebra, I never used it again after that class. Until now.


The people over at JACP Media made the following video to show you how to turn that dusty, old, worthless calculator into an intervalometer so you can make timelapse videos.


What you need:

  • Graphic Calculator (go ahead, dust it off and relive the horrible memories of math class all over agin)
  • an Audio Cable
  • a DSLR with a shutter release port

Press a few buttons to program it and voila! You finally can use that calculator for something useful and fun. Neither of which was the original intended purpose.

Can’t find your old calculator? Check out these intervalometers for around $100 at B&H.

What are your favorite DIY photography hacks? Let me know in a comment below!

[via PetaPixel/YouTube]

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Hanssie is a Southern California-based writer and sometimes portrait and wedding photographer. In her free time, she homeschools, works out, rescues dogs and works in marketing for SLR Lounge. She also blogs about her adventures and about fitness when she’s not sick of writing so much. Check out her work and her blog at Follow her on Instagram

Q&A Discussions

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  1. nancygarero nancygarero

    This is now become very easy and simple to calculate your life plans and objectives by using the free online calculator, which provides you the basic 5 calculating function of your life, by using this calculator you can calculate your loan, credit, and dues amount which are going to be payable by you in future to settle or make anything in your current life.


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  2. Basit Zargar

    lets try

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  3. Peter Nord

    I took math before calculators. Now where’s the port on my old K&E log/log duplex deci-trig? Years ago gave my wife an HP12C, now she can only do RPN.

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  4. Rui Pinto

    Hanssie u did it again! I’ve got an intervalometer and I didn’t know! Awesome

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  5. Ralph Hightower

    As it is Canon vs. Nikon in the camera world, Chevy vs. Ford regarding cars and trucks, there’s HP vs. TI in the calculator world. I’ve been an HP calculator guy since 1973 when I bought an HP-45, which I still own. My HP collection includes HP-67, 2 HP-41, HP48, and HP-16. I can only work with the RPN (Reverse Polish Notation); when I married, my wife brought an algebraic calculator (common calculator entry like TI), so I bought her an HP-12 since I couldn’t use her calculator to balance the checkbook. HP’s slogan was “HP has no equal”; they do now since some of their calculators can use RPN or algebraic.
    I wrote two separate programs for the HP-67 and HP-41 for the Zone System and for focal length equivalents for the different formats. Yes, I am a geek.

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  6. Rafael Steffen

    I still carry two of those calculators! Now I can put them to use!

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  7. Herm Tjioe

    Oh dang . . . who knew TI makes accessories for digital photography.

    Not only can it calculate the timelapse project needs but also make your setup look CalTech cool

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  8. Nick Viton

    sometimes i wish i was a nerd

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    • Hanssie

      Haha. Because you don’t have a graphing calculator? Or you didn’t think this was as cool as I did?

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