The new S2 Scribblers from Parallax are in, and they feature a couple of cool new features. First: They're Open-Source! Yup, they've opened up all the design files to make hacking oh-so-much easier! Secondly, it's using the Parallax Propeller chip now, for mucho-improved computational power. They're already out of stock at Parallax, so get them […]
New GMPW Wheels!
Dave Hrynkiw
June 21, 2007
No more rubber band tires for us! We've invested in getting our very own wheels made for us, with molded-on thermoplastic rubber wheels!
These wheels are slightly larger in diameter than the old style, measuring 69.2mm (2.72") diameter and 7.65mm (0.30") wide. Ah, but how good are they? They're definitely better than the old style! We know from head-to-head tests that these have better traction than the rubber-band tires (definitive numbers are coming...). We've also spun them up on our lathe to see how true the mold process is, and they're quite true - no visible wobbling!
A new enhancement is a built-in opto-reflector 32-step pattern! Built to be bolt-on compatible with the Wheel-Watcher series of wheel-encoders, all you have to do is paint the groove white (for dark plastic wheels), and scrape away the raised surfaces to generate a sharp, accurate 32-stripe pattern!
Did we mention that there was no increase in price for all these enhancements too?
MORE POSTS
Project: Experiments in Watermelon Filam...
It takes a while to get to know all the quirks of your 3D printer and filament well. We thought we'd add to the knowledge base and share what we've learned about using the eSun 1.75mm PLA filament in Glass Watermelon Red on our Kossel Pro delta style 3D printer.
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Marble Catapult, New Product
Check. This. Out. Don from Ontario sent this video our way, of a marble catapult machine he made that uses the GM18 30:1 Mini Metal Gearmotor. He goes into great detail on the mechanics and engineering, and the action starts around the 3:37 mark. We can't believe how intricate the design is, and can't even […]
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Warning: This product contains chemicals known to the State of California to cause cancer and birth defects or other reproductive harm.
Please visit www.P65Warnings.ca.gov for more information. This item was manufactured prior to August 31, 2018.