Juggling Time-Lapse Video in Austria Explained

juggling time-lapse video in citySomething quickly moving, like, you would think, balls being juggled, isn’t a good subject for a time-lapse sequence. The juggling time-lapse video below, however, looks amazing; like the balls are held in their patterns as streaks. It was produced by Lukas Trötzmüller and Joachim Hering, and was meant to highlight the juggling scene in Graz Austria and as an experimental movie.

I had no idea this was a common thing there, but it sounds like a really interesting place to visit.

The video looked to me like since the juggling is done in a repetitive motion, the balls appear to stay in one place as a streak. The answer is quite a bit more involved, and I was able to catch up to Lukas for the rest of the story after the video: Continue reading

Automatic Rotation for a Plant Growth Time-Lapse

Plant Growth Time-Lapse setup

I’m a big fan of time-lapses, but they are almost always more interesting when some sort of motion is involved.  Normally the camera is rotated to make the subject (the world?) appear to move, but in this case,* the subject is a tiny grapefruit plant, photographed over several days of growth.  It’s not a lot as of now, but you can see the resulting video after the “read more” link thing.

A scroll saw was used to cut most of this beautifully finished time-lapse rig, and a Shapeoko CNC router was used to cut the circular piece.  I suppose one could also use a large hole saw if you didn’t happen to have a CNC router around.

A stepper motor drives the belt below the camera at a rate of one step per picture, which, in conjunction with the gear reduction going on, allows for a very slow rotation speed.  Cleverly, the plant’s wooden pedestal is balanced on a cooling fan, acting as a thrust bearing for this relatively light load. Continue reading

Extend Your GoPro Time Lapses over WiFi

gopro-pvc-egg-timer

GoPro Egg timer, extended ‘lapse not necessary.

We’ve featured a way to extend your GoPro’s functionality using an SD card script, but if that seems to risky to you, this WiFi GoPro hack should do that trick.  According to Adrian’s excellent write-up, all you need to do to trigger your camera over WiFi is enter the correct HTTP get request.

All you do is enter: http://10.5.5.9/bacpac/PW?p=%01&t=XXXXXXXX into your browser where the XXX’s are your WiFi password.

What’s even cooler is that this GoPro WiFi hack can be automated to take very long time lapses.  Adrian has written a script to do this in Python, but I’m sure the technique can be copied to other languages if necessary.

On a related note, Adrian is quick to point out that you can view the photos on your GoPro over WiFi by going to http://10.5.5.9:8080.  Really cool.  I hadn’t done the research before, but it seems logical that something like this could be done.

I’ve written about this hack as well as some other GoPro “Pwnage” at Hackaday.  I think I’d started writing this article on DIYTripods before the Hacakaday piece, but held off publishing out of respect to them.  It’s a cool article (In my probably-biased opinion) covering several GoPro hacks, so be sure to check it out.

Via Reddit