 | | Connected Radioshack truck
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like Ram, I connected successfully a radio shack RC truck (4WS) to the handy board. for the DC motor controlling forward and backward speed, I found the 2 entries of the h bridge connecting the motor. I replaced the cheap front end steering servo (...) (29 years ago, 6-Feb-96, to lugnet.robotics.handyboard)
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| | Re: Using cheap RC chasis as 'bot
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OK, time for me to chime in on this thread... The biggest problem, IMHO, with using a cheap RC car/van/truck as a 'bot base is that they all use Ackerman steering (two non-steerable driven wheels in the back, two linked, steerable, non-driven wheels (...) (29 years ago, 6-Feb-96, to lugnet.robotics.handyboard)
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| | Re: Using cheap RC chasis as 'bot
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(...) The biggest problem with tank like drives is the marks/scratches on the floor. Any robot with any weight will probably damage a maple or other hardwood floor in short order. They work fin in a lab with waxed tile floors that no one cares (...) (29 years ago, 6-Feb-96, to lugnet.robotics.handyboard)
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| | Re: Using cheap RC chasis as 'bot
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(...) This would be great! I've always known that my mechanical skills were nowhere near as good as my electronic/programming skills, and getting a suitable base set up is a formidable problem for me. Something like what you propose would be the (...) (29 years ago, 6-Feb-96, to lugnet.robotics.handyboard)
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| | Re: Connected Radioshack truck
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(...) (snip) (...) I also have one of the Radio Shack RC trucks. A good solution for shaft encoding would be to glue a couple (or 4) magnets to the inside rim of the rear tires. Then glue a hall effect sensor to the axle. When the wheel spins, the (...) (29 years ago, 6-Feb-96, to lugnet.robotics.handyboard)
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| | RE: Connected Radioshack truck
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(...) You know what makes REALLY good REALLY cheap shaft encoders? Mice! Get an old mouse that has a broken button (that's usually what goes on mice) and pull it appart. Sometimes, depending upon the kind of mouse, you can get really luckey, and be (...) (29 years ago, 6-Feb-96, to lugnet.robotics.handyboard)
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| | battery voltages
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Regarding the use of a 6V ni-cad pack to solve my over-voltage problem in driving small motors, could I still use my current 9.6V pack, but simply insert a tap into the battery at somewhere close to 6V? Seems nicer than buying another battery pack, (...) (29 years ago, 6-Feb-96, to lugnet.robotics.handyboard)
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| | Re: battery voltages
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(...) Yes, and the current capacity would be the same, since excess voltage gets dissipated in the HB's voltage regulator. -Fred (29 years ago, 6-Feb-96, to lugnet.robotics.handyboard)
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| | Robot Chassis
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Given the extensive traffic concerning robot platforms, I thought I'd add my two cents: For my senior project at Cal Poly I made a robot that had three wheels, two of which were independently driven and one which was a small caster. The chassis and (...) (29 years ago, 7-Feb-96, to lugnet.robotics.handyboard)
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| | Re: battery voltages
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(...) I'd use 6V instead of the 9.6V main power supply - connect it where the main battery terminals are. It'd be really nice if the handy board had a way to use voltages other than 9.6V for the motor driver chips, ya know. :-) (29 years ago, 7-Feb-96, to lugnet.robotics.handyboard)
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