Karl Bielefeldt

Member Since: May 26, 2012

Country: United States


Design engineer making telecommunications equipment for a living. Tinkerer in RC, robotics, and amateur radio for a hobby.

  • When planning your e-textile project, it’s important to select something that will match with any outfit.

  • For those of you without heat ray vision, please stay after class so I can show you the slow way to solder.

  • What Bob doesn’t realize yet is those women just got an awful idea while they were inventorying the igniters.

  • Testers for sparkfun’s new line of thinking caps uncover a few mind-altering bugs.

  • My first browser was lynx in 1993, which I used at college to visit college and library web sites. I didn’t even know web pages could have pictures until 1996. Then it was netscape, mozilla, then firefox. I use Chrome now because when I first tried it shortly after it came out (I don’t know if it’s the case anymore), it rendered much faster than the alternatives, and ran javascript faster too. Also the syncing, minimalist interface with lots of room for what you’re actually reading, and url and search in one place. OS is Windows at work, and Arch Linux at home.

    On a side note, am I the only one who sees Nick staring at a floating magnifying glass?

  • Gotcha, thanks for the clarification about the day’s purpose. Count me in for highlighting some female role models in my homeschool lesson this evening.

  • I understand the importance of female role models, but don’t forget to ask fathers to introduce and encourage STEM topics with their daughters. After all, as long as the gap exists, it’s fathers who are more likely to already be familiar with those fields. My daughter helped me change a light switch yesterday and enjoyed it. We’re working this week on adding a Lilypad and LEDs to her Halloween costume. She loves playing with hexbug robots with her brother and me.

    She is such a feminine, dress up, doll and pony loving girl that I worried we might never have anything in common, but she also loves doing science and electronics with me. Don’t be afraid to ask. A father can also be a role model for a girl.

  • For me, it was how a PCB works. I still remember the first time I saw one. I was 6 or 7 and opened up my tape recorder, and it was green inside! I don’t know what I expected to find, but it wasn’t a green circuit board. Actually, it kind of makes me sad to think about all the mystery gone out.

  • I made something similar for my wife a long time ago when she had a project that required dividing skeins of yarn into equal thirds. No 3d printing or laser cutting, just hardware store parts. No dual stepper motors, just hand cranked. No arduinos, just a decade counter/7-segment decoder IC. Did use a hall effect sensor though. Kids these days.

    Now, if version 2.0 could change the spool without operator intervention, I might forgive the overkill :-)

  • With health insurance rates skyrocketing, SparkFun introduces a subtle new fitness program for their employees.

No public wish lists :(