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No-Drill Dorm Room Curtain
Combat Robotics Tutorial
Oh cool thanks I look into it.
It's not exactly Arduino, but there's an Atmel based dual channel programmable ESC that I plan to use on my Beetle weight bot. It'll control 2 sets of brushed motors for tank style steering. It's not just an ESC, they provide the source code for the ESC, and allow you to program it and use the remaining I/O pins for sensors, etc. What's exciting to me is that this costs about $20, and replaces $60 worth of ESC, while adding autonomous capabilities. http://www.robotmarketplace.com/products/0-PL1220....
How to make a quilt out of old T-shirts
Not that I've seen. RC is common because it is easy to set up and a human controlling the robot is typically going to be better than an autonomous system. However, arduino and raspberry pi should be able to handle the same abuse.
Yes. The higher the gear ratio, the slower the motor will spin, but it will improve acceleration and reduce stress on the motor. Don't go gear to high, though. Too high and the speed of the robot will be a crawl.Wheel size effects the gearbox, not the other way around. A larger wheel requires more toque to spin(ie; will cause the motor to eat more amps), but will also improve top speed. Beware, if the wheel is too big, the motor WILL fry itself just trying to spin it. Smaller wheels require a lot less effort to turn, but will result in lower overall speed.What kind of speed and acceleration you'll need will depend on what the bot is doing, the weight of the bot, and the size of the arena. My rule of thumb is to be at max speed by the time you've reached the middle of the arena, any speed you'll have will be more than enough to work with. My current antweight(1lb) runs a pair of 11:1 Fingertech spark motors at 7.4 volts(Unloaded speed of 1049rpm) with 1.5" wheels, and the speed and acceleration are spot on for my needs. You may need to bump up the gear ratio or change the wheel size to get a speed you will like.
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