Stroboscopic Images

The usual way of taking stroboscopic images is to use a flash that do the trick of twinkling several times during the exposure. This is an alternative method that is cheap and works in full daylight.
A dark background is preferable as in all stroboscopic photography.
This is the simple trick. Make a cardboard shutter and attach it to a small electric motor. Set the camera to a large f-number to achieve a long exposure time. The example images were taken with a film camera but this works just as well with a digital camera. It is even easier as you can evaluate the result immediately and make corrections for exposure errors if necessary. Strobocamera