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Accelab Resources

Accelab Resources

For the camera method: the app, the mathematics behind it, an example in Desmos, and tips for a clean run.

For the camera method: the app, the mathematics behind it, an example in Desmos, and tips for a clean run.

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myungjoon.com/accelab/resources

The app

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For iPhone, on iOS 26.0 or later.

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PDF

The mathematics behind the camera method

The mathematics behind the camera method

How Accelab turns a video into metres and seconds, for a cart on the track and for a projectile.

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Desmos

An example Desmos project for the projectile mode

An example Desmos project for the projectile mode

A flight filmed with Accelab, then graphed and fitted in Desmos.

desmos.com/calculator/jkdvziqb36

Open in Desmos

Scan to open in Desmos

Tips for a clean run

Tips for a clean run

Keep it still

Prop your iPhone. Don’t hold it.

Keep it level

For a projectile, x and y follow the picture’s edges, so a tilted iPhone tilts your data. The Level step checks it before you film.

Face it square-on

Stand back and fit the whole run or flight, with room to spare.

Include something to measure

Anything of known length works, at the same distance from the camera as the cart or object. You mark it in the video to set the scale.

Use good light

Bright light keeps a fast cart or object sharp.

Finish in Desmos

Choose Desmos, then Copy Data, and paste it into Desmos. Fitting the curve is your part.

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