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SparkFun Electronics will be closed on July 3rd, 2015 in observance of Independence Day. Any orders placed after 2:00pm MT on July 2nd will be shipped out after the weekend. Thanks!

BBB

Member Since: September 19, 2009

Country: United States

  • Some one uploads a video of themselves with the theme song from Deliverance? Wow, how soon we forget where things come from…..

  • Thanks, I’m going to attempt something like this soon so the post is very helpful. I have had great success in acetone smoothing usng a crock pot. The fumes are very dangerous so an abundance of caution is a good thing. I give the details halfway through this post on some cold-cast stone from a 3D printed model: casting the bean. It was my first time with silicone mold making and it went very well. That page details the whole process, including a long video on the casting and finishing process. On to hot casting!

  • I support the direction a couple of the earlier comments are going for the next step: a real world project. In general I think someone finishing with the SIK should build something designed to be more permanent and work in the real world that requires soldering, fabrication, sensors and motion. Just as an example, I developed and posted plans for a simple robot of this sort (http://robot50.net/projects/robot-bootstrap/) to use in mentoring makers, which I think I will repackage as a mini-sumo so it has more of a point to it. Sparkfun could do a SIKII which uses a prototype board that require soldering instead of breadboards, gear motors/motor controller instead of a servo, battery power, etc. Actually one robotics project and one IoT project might be a good idea. Build something with permanent connections, put it out there for extended use by others and see what breaks.

  • Yeah that and Robert’s self-blurring (at least on camera) faceted ring. I find looking for trivial details in these videos as much fun as the new products. Probably a sign I’ve been watching them too long :)

  • Slick flick of the knife. Doing it off camera makes it seem even more sinister.

  • They are casting bismuth directly into 3d printed molds (http://makezine.com/projects/guide-to-3d-printing-2014/metal-casting-with-your-3d-printer/). I’ve been cold casting an epoxy/sand mixture into 3D molds. The molds are ABS which has been fumed with acetone vapor to smooth things out. By the way, I have found that vaseline makes a handy mold release for this. Just warm everything up to 150f and the vaseline melts and the casting comes right out.

  • Yeah it was the simplicity of the whole thing. One video per week, one click, sit back and watch. Too bad it became posted too late for my morning coffee in the eastern time zone. Dgerton is right that the home page has gotten too busy. I am not one of the many people who can’t stand change. Yet I have to admit I miss the old way of doing it. Different hosts and settings would be fine, but a single new product post on a given morning each week would be great. Other videos could be posted on other days The multimeter video was extremely well done and I will be linking students to it. I hope it is the beginning of a new series (soldering, discrete electronics, etc). The robotics videos were OK but a bit too limited to one product line.

  • I’ve been using one of those receipt printers for years in my steampunkish Haiku Generator and it’s been chugging along, printing out bad and sometimes scary poetry without a problem. So I can vouch for their durability. I do suggest you tear off the output toward the back at a sharp angle and aggressively for the best results.

  • I broke every interesting toy that was given to me, sort of on purpose to see how it worked. The mechanism was always vastly simpler than I had imagined. My most startling aha moment as an adult was finding out what happens when you put a large capacitor in backwards and give it power. My ears are still ringing.

  • Better be careful with that stuff, look what it has done to his voice and body (or maybe that’s what you are looking for Mr/Ms Jenner :).