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lego
(score: 0.962)
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 | | Newbie Questions (Sensors)
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| Greetings! I have a couple of "newbie" questions if you please: I ordered from LEGO, their "sensor suite". I managed to wire and use the touch sensor. But I am puzzled about the use and wiring of their Light Sensor (9890) and their angle sensor (...) (28 years ago, 10-Jul-96, to lugnet.robotics.handyboard)
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lego
(score: 0.961)
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| | Re: status of the expansion board
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| I'm curious as to how the Polaroid sonar and servo circuits will work. Will they simply steal timer lines from the HB's digital headers, or do you have something more complex worked out? For example, will the sonar's ECHO signal still go to a (...) (28 years ago, 11-Jul-96, to lugnet.robotics.handyboard)
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lego
(score: 0.960)
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| | Re: Trinity College robot contest
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| Fred & others, FYI, there were 5 teams of LEGO robots (using 6270 and HB) in the "grown-up" category from Penn State Abington-Ogontz (Abington, PA). These were freshmen and sophomore engr undergrads taking a robot design course. (One team placed (...) (28 years ago, 8-Sep-96, to lugnet.robotics.handyboard)
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lego
(score: 0.956)
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| | Please may I join the mailing list.
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| I am making a Lego robot as detailed in the book "Mobile Robts, Inspiration to Implementation". I would like to use the Handy Board as a control centre. Please may I join the handy-board mailing list. Thank you. Richard Whitehead (...) (28 years ago, 9-Sep-96, to lugnet.robotics.handyboard)
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lego
(score: 0.956)
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| | Trinity College robot contest
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| Hi everyone, Jake Mendelssohn has posted the rules for the 4th annual spring 1997 Fire-Fighting Robot Contest. I went to the 1996 contest and it was great fun. The contest draws people from all over the world, including hobbyists, university folk, (...) (28 years ago, 11-Sep-96, to lugnet.robotics.handyboard)
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lego
(score: 0.954)
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| | robot bodies...
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| (...) Check out (URL) the B-BOT frame by Marvin Green, which costs around $30. It has a clever bumper arrangement which allows it to sense collisions in all directions (similar to the Rug Warrior). Of course, there's always LEGO. -- Randy (28 years ago, 22-Sep-96, to lugnet.robotics.handyboard)
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lego
(score: 0.954)
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| | motors for the handy board
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| Handy Board Users: I took the LEGO Super Car (#8880) and scrapped everything but the four wheel drive with the differentials, the front and rear wheel steering, and the suspension. Then I shortened the frame sllightly so that the distance between (...) (28 years ago, 4-Nov-96, to lugnet.robotics.handyboard)
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lego
(score: 0.951)
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| | Re: Pic16c84 programming with Handyboard
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| David -- The MAX662 chip I used on the last beta rev was not the magic bullet I hoped. Not only is there possibly the rise time problem you mention, but when the thing turns off, it outputs 5v. The PIC needs a swing from 0v to 12v to enter program (...) (28 years ago, 5-Nov-96, to lugnet.robotics.handyboard)
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lego
(score: 0.950)
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| | Re: motors for the handy board
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| (...) This is exactly what I wanted to do! Had I only the cash... (...) Are you driving each wheel with a separate motor or driving the front wheels with one 9v motor and the rear with another? (...) I have been fooling around with them since I was (...) (28 years ago, 4-Nov-96, to lugnet.robotics.handyboard)
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lego
(score: 0.949)
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| | Re: motors for the handy board
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| (...) I had the same problem. I did many tests, and the last one was: I removed the 4x4 transmision, removed both forward and backward differential, and put a 9.6V motor with a VERY high torque. The results: the car started running, and in two or (...) (28 years ago, 4-Nov-96, to lugnet.robotics.handyboard)
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lego
(score: 0.949)
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| | R/C cars as robot chassis
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| Here is a rule of thumb to keep handy when converting R/C cars to robots; o If the R/C car used either NiCd batteries, or it had a NiCd battery pack, the motors will draw too much current for the Handyboard. This is strictly true of any controller (...) (28 years ago, 12-Nov-96, to lugnet.robotics.handyboard)
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lego
(score: 0.949)
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| | RE: JAVA and the handyboard
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| I found my info on the Bali paper: Title: The BALI Development Environment for Small Mobile Robots Author: Willie Lim, Future Minds, Inc., William Y-P. Lim, wlim@ai.mit.edu Pages: 11 Presented: Mobile Robots X Conference (SPIE Conference 2591) in (...) (28 years ago, 19-Dec-96, to lugnet.robotics.handyboard)
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lego
(score: 0.945)
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| | Re: Using RC cars for robot
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| (...) We have successfully integrated a Traxxas RC car with the Handy Board. The vehicle uses a standard servo for steering and an electronic speed control (same behavior as a servo.) Since the HB can control 2 servos this works well. In this case (...) (28 years ago, 2-Jan-97, to lugnet.robotics.handyboard)
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lego
(score: 0.945)
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| | Handyboard debugging problem...
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| One of the student groups in my Lego robot course is having a problem getting their Handyboard to work...they got IC to load successfully, then went ahead and installed U6 ('HC138), U9 ('HC04), U5 ('HC244), resistor packs RP1 and RP2, and SW2. Now (...) (28 years ago, 4-Feb-97, to lugnet.robotics.handyboard)
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lego
(score: 0.943)
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| | Re: expansion board schematic posted
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| It is largely a space issue, not only for chips but connectors. It definitely would be feasible to remove one of the analog muxes and substitute an output latch in its place. Then the specs would be 8 general purpose, 4 hi impedance, 4 LEGO analog (...) (28 years ago, 7-Feb-97, to lugnet.robotics.handyboard)
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lego
(score: 0.941)
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lego
(score: 0.935)
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| | Re: my fire-fighting robot
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| Hi Fred, I saw your LEGO robot picture that you put up. I am interrested on track threads on the robot. Could you tell how to get a hand on ones ? I do no think they are LEGO parts, are they ? They seem to be quite long as well. Thank you, -Pandit (...) (27 years ago, 13-May-97, to lugnet.robotics.handyboard)
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lego
(score: 0.934)
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lego
(score: 0.934)
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| | (no subject)
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| AN OPEN LETTER TO PROFESSORS JAKE MENDELSSOHN AND DAVID AHLGREN, ESTEEMED FOUNDERS OF THE TRINITY COLLEGE FIRE-FIGHTING ROBOT COMPETITION. Wed Apr 23 00:50:42 1997 Dear Jake and Dave, Thank you for organizing such a fantastic robotic event. It was (...) (27 years ago, 23-Apr-97, to lugnet.robotics.handyboard)
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lego
(score: 0.933)
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