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Madbodger

Member Since: January 12, 2008

Country: United States

Profile

Programming Languages

C, Java, XSLT, assembler

Expertise

Vacuum tubes, neon, microcontrollers, electronics

Interests

Neon, reading, building, making

Websites

http://www.vitriol.com/ http://bodger.dreamwidth.org/

  • Have you seen the “flip pin” headers that work better with breadboards than the ordinary square pin ones?

  • In this case, all the mode lamps were run from the same AC supply as the backlights, just switched by another deck on the mode switch. The only ones that are switched electronically are a pair of bulbs that show stereo reception. They seem to be run in series from a 13VDC supply via a resistor, and are switched by an ordinary BJT. I’m guessing Byron replaced them too.

  • All my life, I’ve been at loggerheads with time. I love seeing someone smart and creative attacking my issues with time head-on!

  • I’ve been at this for a very long time, and it’s still fun for me. I still burn components from time to time, and I’m still surprised on a regular basis. I enjoy all of it, and try to learn from each mistake and surprise.

  • I had a heating pad once that I was using as a warmer for a sick pet. The automatic 2-hour shutoff wasn’t a feature I wanted, so I opened the controller, and found well-marked pads for choosing 2 or 10 hour shutoff and to disable it entirely. I documented it on my website, and I’ve actually gotten a couple of emails thanking me for doing so, as other people doing similar things could use the information.

  • Yeah, a half watt is plenty at a reasonable current, but many manufacturers run the neon bulb at way too much current to get more brightness. In those circumstances, the resistor usually burns before the neon bulb dies.

  • “Delete” was also known as “rub out”. It was useful when there was a typo on punched paper tape. Since it was all holes punched (all 1s in binary), punching it on top of any character would replace it with “delete”. It was easy enough to make paper tape readers just ignore any such instances, avoiding the need to repunch a whole tape if one character was mistyped.

  • Saying the lithium cells have more energy density than coin cells is odd, as coin cells are also lithium cells. Also, another option to get 5V from a single cell is a DC-DC converter.

  • I’m a little unclear why a 3-axis controller comes with 4 stepper motors. It’s like hot dogs and buns.

  • I doubt they want to release it with a share-alike license, as then they’d have to release circuit diagrams, source code, sound files, etc. and they may well have used some licensed content there. Some attribution would have been nice, however.