We are currently in the process of revising our CNC design since the Y/Z axis was eating its rails over time due to slight alignment issues. We decided to upgrade the bearings in general to avoid the problem in the future. The x-axis seems to be working fine, so we are going to leave it alone for now. The revision includes CNC cut pieces instead of hand cut pieces (using table saws and drill presses). We also did a major upgrade to the bearings and went with ACME-type lead screws to minimize backlash and improve accuracy. We updated the stepper couplings to the lead screws to make future maintenance easier. The redesign is expected to be complete within the month.
We have decided to upgrade our Oobleck demonstration since it seems to be wildly popular. Our goals were to go bigger and reduce noise output. One 15″ subwoofer and donated amp later we were done. It is a much simpler, larger, and quieter design than our previous demo. Videos will be posted soon.
Robot Fest 2010 has come and gone. Some of the many interesting exhibits this year included the pneumatic rocket experience provided by the Baltimore Node, the many Lego Mindstorms projects, Maker Bot demonstrations, various art demonstrations, and a fashion show.
We’d like to thank everyone that stopped by our exhibit to view the Oobleck demonstration, PIC micro-controller LED arrays, the hand-powered Arduino random movie quote generator, build some cardboard robots, or just hang out and talk electronics. We had a great time and we hope to see everyone next year. Our next event will be at ArtScape in Baltimore. In the meantime, feel free to come by and do some hacking on one of our open hack nights.
Wednesday was the day we finally got together and started the tedious process of mastering microcontrollers. What began with just some simple LED illumination evolved and progressed throughout the evening. In the end we had individually, but collectively, written programs for interpreting analog inputs, displaying binary values, and performing counting and reset operations. The evening was pretty fulfilling for some less experienced members and refreshing for the remainder. Another microcontroller experiementation session is being planned for the near future.