Older blog entries for robotdojo (starting at number 2)

18 Sep 2002 (updated 15 Mar 2010 at 22:18 UTC) »

We're back from BotBash 2002 and TinBender pulled out an 8th out of 22 16-OZ bots, Wedgeward-HO won 2nd in the 30 pound MERC (MEchanized Robotic Combat) class and Full Frontal Fulcrum won the 120 pound MERC championship. For pictures and trip report, visit Robotdojo at telerover.com. The two on two team format was great for getting to know your opponents, who became your friends. Wedgward-Ho had its lifting wedge chain ripped out twice and had three out of 5 drill motors destroyed by Helios. Here's the trophies.

10 Sep 2002 (updated 11 Sep 2002 at 20:09 UTC) »

I had a problem with using a Hitec dual conversion FM receiver (modified for 75MHZ surface frequency) on Wedgeward-HO. Everytime the bot would lose the transmitter link, or when first powered up, the IFI Victor 883 ESC's would detect a signal from the receiver and would momentarily send motion signals to the motors. This was especially damaging to the lifting wedge weapon motor, as the wedge would go to end-of-travel (no limit switches) and cause the motor(taken from a battery powered drill) to stall. Enough of those and the motor(s) went bad. It also would cause a safety violation at the competition. I replaced the Hitec FM with a Futaba 75 Mhz PCM receiver last night and the problem went away. I was warned by a fellow engineer who builds helicopters that the cheaper Hitec's were noisy, but thought I could get away with it. Nope.

4 Sep 2002 (updated 15 Mar 2010 at 22:20 UTC) »

The next competition that I'll be heading toward is Botbash in Tempe, AZ, where I'll be competing with three bots that were built in the last four weeks. A 1 pound Antweight, called Tin bender (competed at MURC), a 30lb entry called Wedgeward-HO, and a 120 lb middleweight called Full Frontal Fulcrum. These are all basic wedges or in the case of Wedgeward-HO, a lifting wedge. These bots, with the aid of an adrenaline/testesterone jucied-up human must move a ball, capture a cone and fight against another bot with the aid of a randomly chosen partner-bot. It should be great fun.


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