3 Aug 2005 cschur   » (Master)

Hi All,

Ive breadboarded the sharp GPS2 series IR photo detector and tried it out on a homemade encoder wheel printed out with a laser printer. the peak range is very critical, about 2mm and drops off drastically on both sides. Also, even with a 50k pull up on the collector, the range was about 1- 4v out. So a schmidt trigger will probably work. Remember, many PICs have thier inputs on the A port connected in with a schmidt trigger, making interfacing a snap.

Second, Ive given up on the wimpy RIS software that comes with the Mindstorms kit, its a joke. Ive installed the firmware and software for Robolab, and let me tell you, Im about 3/4 the way through the tutorials and it blows the heck out of RIS. It can do simultaneous paths making subsumption architecture a reality.

Third, VACbot is comming along. Ive got all the parts on the PCB and am wiring it in now. I first will have to determine if using PWM I can get the speed of this thing without adding gears to about 1/2 to 1 foot per second. I feel thats a good speed to start. The L298 is a great motor dual H bridge, but why such an awful pin footprint??!




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