Hackaday Links: January 12, 2014

hackaday-links-chain

[Kyle] teaches photography and after being dismayed at the shuttering of film and darkroom programs at schools the world over decided to create a resource for film photography. There’s a lot of cool stuff on here like mixing up a batch of Rodinal developer with Tylenol, lye, and sodium sulphite, and assessing flea market film cameras. There are more tutorials coming that will include setting up a dark room, developing prints, and playing around with large format cameras.

[hifatpeople] built a binary calculator out of LEGO® bricks or toys. It started off as a series of logic gates built out of LEGO® bricks or toys in the LEGO® Digital Designer. These logic gates were combined into half adders, the half adders combined into full adders, and the full adders combined into a huge plastic calculator. Unfortunately, buying the LEGO® bricks or toys necessary to turn this digital design into a physical model would cost about $1000 using the LEGO® Pick-A-Brick service. Does anyone have a ton of LEGO® Technic® bricks or toys sitting around? We’d love to see this built.

Think you need a PID controller and fancy electronics to do reflow soldering in a toaster oven? Not so, it seems. [Sivan] is just using a meter with a thermocouple, a kitchen timer, and a little bit of patience to reflow solder very easily.

The folks at DreamSourceLabs realized a lot of electronic test equipment – from oscilloscopes and logic analyzers to protocol and RF analyzers were all included a sampling circuit. They designed the DSLogic that puts a sampler and USB plug on one board, with a whole bunch of different tools connected to a pin header. It’s a pretty cool idea for a modular approach to test equipment.

Adafruit just released an iDevice game. It’s a resistor color code game and much more educational than Candy Crush. With a $0.99 coupon for the Adafruit store, it’s effectively free if you’re buying anything at Adafruit anytime soon. Check out the video and the awesome adorable component “muppets”.

7 thoughts on “Hackaday Links: January 12, 2014

    1. Yep. Allowing language be controlled by a corporation is really the only way to go. The same with advocating linguistic superiority between different dialects of English.

      In case it isn’t clear, I’m being sarcastic and both of these things are reprehensible.

  1. That Rodinal recipe is a little too Walter White for me. I feel like I have to buy an old RV, a yellow rain jacket, rubber gloves, an apron and a respirator to make it.

  2. The choice of film cameras is nice if you just want to learn 35mm. Myself, I prefer to experiment, tweak, and occasionally break an old camera. (only once but painful; lost the set screw to a M42 C.Z. prime). Sure, if you shoot something modern, get a similar all manual body. But don’t dismiss the fun of 1¥ or 120 camera. Even a fixed focus (cheap) TLR is a learning experience. And a Speedflex 4×5 can be pretty cheap.

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