 | | Re: To step or not to step
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Russell , Having that encoder will help you a lot. One of the biggest problems with using steppers is that they will stall when you get to higher speeds. What ever program you use to drive the steppers should have a part that asks "has it made the (...) (26 years ago, 7-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Science Interest
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Although not sure, I think that a wearable could perform better then a palm pilot for the firefighting task. Here are some pointers: [Georgia Tech] (URL) Lab] (4 URLs) [UoToronto] (URL) it helps, Ozan (26 years ago, 7-Nov-98, to lugnet.robotics.handyboard)
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| | Follow-up on DS1233 problem
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Hello, all: Just following-up on yesterday's message about the HB resetting during the initial download. Removing the DS1233 and replacing it with a reset switch produces a working configuration. There was also one stuck digital input, but swapping (...) (26 years ago, 7-Nov-98, to lugnet.robotics.handyboard)
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| | Re: nicad battery
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It might take a bit longer to charge but I don't see a problem I actually use a 12V 3AH gell cell to power my robot and Handy Board -----Original Message----- From: Pat Benoy <benoy@SLU.EDU> To: handyboard@media.mit.edu <handyboard@media.mit.edu> (...) (26 years ago, 6-Nov-98, to lugnet.robotics.handyboard)
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| | Re: To step or not to step
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I encountered the same problem with the DC motors I use on my robot. I used a reflective type encoder that read a black and white stripe of the driving wheels, but did not work reliably due to lack of resoulution and interference from ambient light. (...) (26 years ago, 6-Nov-98, to lugnet.robotics.handyboard)
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| | Re: nicad battery
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(...) I'm sure that would be fine. The important things seem to be the 9.6 volts and the relatively high current capacity that nicads provide. The larger the amp-hour rating, the longer you can go before recharging. -- Will , , __@_/ \_@__ |/ | /__, (...) (26 years ago, 6-Nov-98, to lugnet.robotics.handyboard)
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| | Some Parts
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I read somewhere that someone was selling the "hard to find parts" of the HB including the DS1233, HC11, motor controllers and an LCD. I can't find it now... does anyone know of such a thing??? It would help. P.S. - to anyone who is considering (...) (26 years ago, 6-Nov-98, to lugnet.robotics.handyboard)
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| | Re: Science Interest
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Dear Capt. Rutledge, Your ideas sound very interesting! May I suggest that you join the following mailing list. It's a hotbed for this sort of discussion: (URL)Dear Professor Berg, (...) ***...*** Robbie Berg Department of Physics, Wellesley College (...) (26 years ago, 6-Nov-98, to lugnet.robotics.handyboard)
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| | nicad battery
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Is it ok to use a 9.6 volt 700 mAh RadioShack batttery instead of the 500 mAh battery specifed in the instructions?? (26 years ago, 6-Nov-98, to lugnet.robotics.handyboard)
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| | To step or not to step
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Hi all, Iam trying to make up my mind on which type of motor to use on my robot, I have got two stepper motors with built in quadriture encoders and also two 12v 2amp D.C. motors with gearbox's. I have made a test bot built from Lego with two 9Volt (...) (26 years ago, 6-Nov-98, to lugnet.robotics.handyboard)
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