Watched the Solar Eclipse with a Quick and Dirty Pinhole Camera

Of course neither me nor any of my colleagues had an appropriate protection to view the upcoming solar eclipse. So I had to ‘hack’ together a device to still be able to watch the eclipse pass in a safe manner.

Solar Eclipse (Munich, Germany, 2015.03.20 10:40 CET) viewed though a simple (5 minute hack) pinhole camera:
Simple Pinhole CameraThe camera was built from an old rolled conference poster, some adhesive tape, plastic foil, and a cardboard box. I think it is self-explanatory:
One side was covered with opaque foil, only a tiny pin hole (< 1 mm) let light through. The other side was simple plastic foil (from my lunch). The box acted as a shield to protect from accidentally looking into the sun.
Simple Pinhole Camera showing the Solar Eclipse

It’s a mirror image, by the way.

Additionally (out of curiosity) I’ve taken a photo with my iPhone 4S:
Solar Eclipse Photo  / iPhone CameraThe eclipse can be seen in the lense flare (here a 100% cut-out):
Solar Eclipse Photo  / iPhone Camera (Lense Flare)

Wobbling Sugar (Jelly)

Just for fun: Made jelly for my little ones today. I was so fascinated by the wobbling of the jelly that I used it as a test candidate for my new Canon EOS 70D camera… the result is a somewhat senseless test video. So clear the stage for the Jellydance:

And by the way: strictly speaking, jelly is mostly stiff sugar water. Five minutes after the video was shot all jelly was gone…

Jelly after being aten...

WTF? Phosphorescent power supply

I’m not sure what to make of this: last evening I played around with a new hardware device (a TP-Link TL-MR3020 router, but that’s not the point). I was leaving the room and just as I turned off the lights I noticed a green spot on my desk. The USB power supply of the device emitted a green phosphorescent glow (Wikipedia).

Phosphorescent power supply (under normal lighting)

Phosphorescent power supply (ISO 100; 30 seconds exposure)

I’m not sure why the manufacturer used a phosphorescent material for the case of the power supply, but the effect is quite impressive (creepy) and lasts for some minutes. By the way, it’s a Huntkey Switching Power Adapter model HKA00605010-3B.

Stellaris LaunchPad LM4F120 unboxing

I was lucky to be in the first group of people to receive two TI Stellaris Launchpad LM4F120 Evaluation Kits. Hurray! 🙂

I bought both kits for 9,98 US $ directly from TI. Here some photos from the unboxing. I will update this post as soon as I get a development environment up and running. For everyone who can’t wait: there is a nice “Getting Started” page from TI with video tutorials and tons of information.

P.S. I like the comment of the Stellaris MCU Team in the box: “Happy Coding!” 😉