 | | Re: Toy motors
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(...) Sure, just hack your HB to use an external battery for the motors. The external battery can be whatever voltage the motors prefer (within reason). If the motors still draw too much current, try piggybacking another set of motor driver chips on (...) (26 years ago, 22-Jan-99, to lugnet.robotics.handyboard)
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| | Out of TIC Inputs
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Hi everyone. I'm running the HB 1.2 with the expansion board. I've installed the 6500 ranging system and use servo ports 1 through 3. I now have two wheel encoders functioning and desire to use the IC encoder routines. My problem is that I've got (...) (26 years ago, 22-Jan-99, to lugnet.robotics.handyboard)
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| | 6.270 vs. Handy Board motor stuff
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[Max Davis] spake unto the ether: (...) Too much current (and voltage) for those original Polaroid motors, which are 6-volt. (...) I heat-sink mine with the clip-on variety; it helps. (...) I have done the 6.270 piggyback hack with the motor driver (...) (26 years ago, 22-Jan-99, to lugnet.robotics.handyboard)
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| | senor signal line back to HD
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Hi, Currently, I'm using a infra-sensor with supply by 12v external source battery.The signal line wire is plug directly into the HD digital or analog port. The positive and negative supply of this infra-sensor is connected to the external supply (...) (26 years ago, 22-Jan-99, to lugnet.robotics.handyboard)
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| | Re: POWER GLITCH
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(...) Please see the FAQ, specifically: (URL) I am also looking for a servro motor, any (...) Please see the "Get One" pages, specifically: (URL) (26 years ago, 22-Jan-99, to lugnet.robotics.handyboard)
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| | (no subject)
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Hello, folks. My first foray back onto the list in a few years. I checked the archives and didn't see an answer to this question, so here goes: Until recently, I taught a freshmen robotics seminar using old 6.270 boards, motors, and parts bought (...) (26 years ago, 21-Jan-99, to lugnet.robotics.handyboard)
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| | HELP
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Dear Friends, Our handy board has developed some problem again.We have put the 6811 and the RAM chips on the handy board till now. If we download pcode it downloads it well.On reset beeping does not occur and IC does not run.What do you think the (...) (26 years ago, 21-Jan-99, to lugnet.robotics.handyboard)
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| | Toy motors
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I understand that you can't use normal toy motors I just have two questions: 1. Can you construct circuitry to limit current and voltage draw to operate these. 2. Can you purchase 9v motors in the same physical diamensions as normal toy motors? I (...) (26 years ago, 21-Jan-99, to lugnet.robotics.handyboard)
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| | POWER GLITCH
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Hi There. When ever I am runing any motor , the message "Power glitch" apears on the LCD. what is the pb? I am also looking for a servro motor, any suppliers?. Thanks. (26 years ago, 21-Jan-99, to lugnet.robotics.handyboard)
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| | MIT 6.270 LEGO Robot Design Competition, Wednesday January 27
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Hi everyone, Announcing this year's MIT LEGO Robot Design Competition! As always, the contest is open to the general public at no charge, with seating available on a first-come, first-serve basis. This year's contest is called "Raiders of the Lost (...) (26 years ago, 21-Jan-99, to lugnet.robotics.handyboard)
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| | Re: HELP
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the 74hc04 gate might be blown. try another. fred In your message you said: (...) (26 years ago, 21-Jan-99, to lugnet.robotics.handyboard)
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| | Re: New comer to HB mailing list
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Han , I think you have a slight misunderstanding of the command fd(motor). This command means START running the motors, not continue running the motors. When you hit the switch you need off(motor). So: void main (void) { fd (0); fd (1); printf("Hey, (...) (26 years ago, 21-Jan-99, to lugnet.robotics.handyboard)
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| | New comer to HB mailing list
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Hello, everyone! I just joined to Handy Board mailing list and sincerely hope to exchange useful information and experience to enhance our daily joy with Handy Board. I am considering a kind of intelligent self recharging system of my robot. When (...) (26 years ago, 21-Jan-99, to lugnet.robotics.handyboard)
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| | PVM output
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Dear all, I looked at the lib_hb file and found the portion for motor outputs. void motor(int m, int speed) { if (speed>100) speed=100; if (speed<-100) speed=-100; if (speed >= 0) _set_motor(m, 0, (255*speed)/100); else _set_motor(m, 1, (...) (26 years ago, 21-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Dual Coaxial power jacks?
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good beginner questions... (...) you can use either. if you use the one on the interface, then power goes through the phone cable to charge the HB. if you use the one on the HB, then power goes through the phone cable to operate the ckts on the (...) (26 years ago, 21-Jan-99, to lugnet.robotics.handyboard)
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| | Re: blowing analog inputs [was: Battery Level Indicator]
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(...) this isn't right, so i feel the need to correct you. the hc11's analog inputs are sensitive; i have seen many of them destroyed (on a pin-by-pin basis), and voltages above 5v or below 0v are the cause). more accurately, it's not the voltage (...) (26 years ago, 21-Jan-99, to lugnet.robotics.handyboard)
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| | ROVER
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Dear Mr Fred Martin/friends, We have run into some strange problems.Whenever we download the pcode_hb.s19 to the handy board using dl.exe we first get it is loading bootstrap program then the pcode.It shows the loading by a series of dots and (...) (26 years ago, 21-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Douglas Electronics Expansion Board
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We have revised the Handy Board Expansion Board Kit documentation to refer to the information on the Handy Board website. Tom Brusehaver is correct in his post that the J11 flex cable connector is not included in the kit as it is supplied with the (...) (26 years ago, 20-Jan-99, to lugnet.robotics.handyboard)
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| | off topic but cool
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I thought you might find this interesting ... a tiny one inch hard disk drive weighing 17 grams, capable of storing 340MB: (URL) (26 years ago, 20-Jan-99, to lugnet.robotics.handyboard)
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| | Dual Coaxial power jacks?
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I am new to the Handy board and Mine is in the starting phases of construction. I would like to ask the more experienced roboticist. 1. Why is there a power jack on both the Handy board and the charger? does the Interface need power? and if there is (...) (26 years ago, 20-Jan-99, to lugnet.robotics.handyboard)
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