 | | Using cheap RC chasis as 'bot
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I used a Fischer Price RC car: well built with two gear settings and quite battery efficient. Once the RC receiver was ripped out, there was plenty of space for the Miniboard to be mounted internally. However, I chose to mount it on top in a (...) (29 years ago, 7-Feb-96, to lugnet.robotics.handyboard)
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| | Caster Substitute
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While there is some discussion on robot bases, let me add a bit about the "third wheel", usually a caster, used on differential drive systems. Casters have the advantage that they are plentiful, cheap, and come in lots of sizes and configurations. (...) (29 years ago, 7-Feb-96, to lugnet.robotics.handyboard)
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| | announcing the HB Expansion Board version 2.0!!
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Greetings all, The Handy Board Expansion Board version 2.0 design is complete! I'm pretty excited about the feature set, which includes a bunch of things not on the older (not released) expansion boards: * high-impedance analog inputs * PIC (...) (29 years ago, 7-Feb-96, to lugnet.robotics.handyboard)
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| | 5mm range reflectance sensor
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Hello, I've got a 5mm range reflectance sensor which I am trying to get to work with the handyboard, without much success. Here is what I have: DigiKey part #: OR506-ND Manufacturer #: EE-SB5V The labels on the leads are as follows: .--- (+) .--, / (...) (29 years ago, 8-Feb-96, to lugnet.robotics.handyboard)
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| | Re: 5mm range reflectance sensor
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(...) Very nice ASCII graphics. I don't know this part but assuming that the + and L pins are the pins which control the transmitter, and asuming the reciever is a photo transistor that should act as a switch, I would say that you should connect the (...) (29 years ago, 8-Feb-96, to lugnet.robotics.handyboard)
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| | IC Problems
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OK all of you IC gurus. How come I can't do this: int m() { int *address; address=&a0; address++; } a0 is a variable defined in an .icb file. I also can't do something like address=address+2; or address[4]=7; Why not? This is all pretty standard C (...) (29 years ago, 8-Feb-96, to lugnet.robotics.handyboard)
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| | IC Problems
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OK, OK. RTFM, I know. I looked at the on-line manual, and now realize that IC arrays are different than normal C arrays, and so you can't do stuff like int m() { int *address; address=&a0; address++; } But then the question still remains, how can I (...) (29 years ago, 8-Feb-96, to lugnet.robotics.handyboard)
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| | IC Problems
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(...) Brian> But then the question still remains, how can I define a list of Brian> consecutive memory locations in a .icb file and then access Brian> them from within a loop in a .c file? [ ... ] Brian> Anybody run into this before or have any (...) (29 years ago, 8-Feb-96, to lugnet.robotics.handyboard)
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| | Quad encoders
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Thx to the advice of many of you I am using encoders from mice as shaft encoders. The code in the libraries does not seem to take into account encoders with TTL signal in quadrature. Therefore I do not get direction from the current software. Maybe (...) (29 years ago, 11-Feb-96, to lugnet.robotics.handyboard)
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| | battery voltages
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I'm currently trying to get 6V out of my 9.6V battery pack. (I actually looked around for a 6V one, but couldn't find one that would work...) I've opened up the pack, and can access the cell where I can get 6V. However, I'm not sure how to get a (...) (29 years ago, 11-Feb-96, to lugnet.robotics.handyboard)
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