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 | | RE: Battery Status
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| I have quite a few battery discharge curves lying around, and one thing I can tell you is that they are all different. Generally they start at a high voltage, quickly discharge to a normal operating voltage, hold that voltage for a majority of (...) (25 years ago, 4-May-99, to lugnet.robotics.handyboard)
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measurement
(score: 1.719)
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| | Re: Lego Network Protocol questions
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| (...) I was under the impression you wanted to sync a clock to the rhythm of bit arrivals. You cannot do this. You can definitely sync a clock to the rhythm of byte arrivals. I was trying to point out this distinction to you. You must have been (...) (25 years ago, 6-May-99, to lugnet.robotics)
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measurement
(score: 1.719)
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| | Re: Lego Network Protocol questions
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| (...) This is a possibility I hadn't considered, and it sounds reasonable to expect to see that effect at some point. I never tested how a second source affects echo reception, but it seems easy enough to test. If I get around to testing this I'll (...) (25 years ago, 6-May-99, to lugnet.robotics)
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measurement
(score: 1.718)
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| | Handyboard IR Sensor question.
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| Thanks for your last response. Today we wrote and tested: Run motor 1 forward at half speed. Monitor the microswitch at digital port 7. If the switch closes (Hit the wall!) then Stop the motor BEEP Run motor 1 backwards full speed for 1 second. Shut (...) (28 years ago, 10-Jan-97, to lugnet.robotics.handyboard)
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wall
(score: 1.718)
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| | A robot who knows his position (fwd)
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| ----- Forwarded message from Mario Ferrari ----- From: "Mario Ferrari" <mario.ferrari@edis.it> Date: Tue, 27 Apr 1999 22:12:25 GMT I had some success in my first experiment with odometry. My goal was to build and program a bot that at every moment (...) (25 years ago, 28-Apr-99, to lugnet.robotics)
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dimension
(score: 1.717)
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| | Re: Brick Testament image used on LEGO.com?!
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| (...) Heh. That's even worse than the image of an actual Playboy pinup that can be found on the box of a particular Hasbro Star Wars collectible. Seems that way back when Star Wars was first filmed, the model makers had a slightly ribald sense of (...) (17 years ago, 30-Jan-08, to lugnet.fun, FTX)
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brick, wall
(score: 1.717)
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| | dual servos unstable?
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| (...) Try running the two-servo code, but unplugging each of the two servos, in turn. One servo plugged in to the two servo code should narrow down whether this is a software or power problem. If it only jitters when both are plugged in, I'd (...) (28 years ago, 17-Jan-97, to lugnet.robotics.handyboard)
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wall
(score: 1.716)
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| | dual servos
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| Hello world, To richardv@abac.com, I am eagerly awaiting your results. To joe.doubek@privy.com, I'll keep you posted. So far I have gotten to the stage of pretty well ruling out input noise as the cause of twitching servos. I have almost identical (...) (28 years ago, 17-Jan-97, to lugnet.robotics.handyboard)
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wall
(score: 1.716)
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| | Re: [LDAO] Could a few people test something, please?
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| (...) OK. Here goes; Dell Dimension XPS P120c overclocked to a blistering 133mhz. Win95 build 4.00.950a IE 5 build 5.00.2314.1003 48mb RAM Full test: ---...--- 5/8/1999 12:19:42 AM VEC.Initialize - csStart 5/8/1999 12:19:45 AM VEC.Initialize - (...) (25 years ago, 8-May-99, to lugnet.cad.dev)
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dimension
(score: 1.716)
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| | PID controller HELP!!!!!
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| Hello all.... I am currently trying to implement some level of shaft encoding/motor control on the handy board. I am using the shaft encoder software available on the H board site. I am currently using the "slow" version, as the top velocity reading (...) (25 years ago, 20-May-99, to lugnet.robotics.handyboard)
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measurement
(score: 1.716)
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| | Re: IR sensors
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| (...) Sure. We put "Front" on digital(14) and "Right" on digital(15). And you can have as many as you want that don't interfere with each other. We did something like... contact = digital(14) * 2 + digital(15) to get both sensor results into an (...) (28 years ago, 5-Feb-97, to lugnet.robotics.handyboard)
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wall
(score: 1.716)
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| | Actuator?
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| While Chris and I were pouring thru old Lego Patents... I happened to find this interesting Lego patent from 1991... (URL) actuation system - Google Patents I wonder if that is the new part that we are seeing in the new technic line??? Anyone care (...) (17 years ago, 10-Feb-08, to lugnet.technic)
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brick, wall
(score: 1.716)
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| | Finally got some sets...
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| I was finally able to make it to WalMart today. They had most of the sets, but no TIE/Y or Anakin's PodRacer. Since I don't have much money, I only bought an X-Wing, Snow Speeder, Naboo Fighter, Landspeeder, and Speeder bikes. I'll leave the Pod (...) (25 years ago, 9-May-99, to lugnet.starwars)
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dimension
(score: 1.715)
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| | Re: rotation sensor question
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| (...) As for using them for a balancing problem, Luis will probably want to gear up the axle at the pivot point to get a more-accurate measurement than the 1/16th rotation that the rotation sensor provides. This might add some friction on its own, (...) (25 years ago, 28-May-99, to lugnet.robotics)
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measurement
(score: 1.715)
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| | Re: Ben's LEGO Millennium Falcon pictures on-line
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| Great Model Ben! Any idea at all how many pieces you've used for it? it looks easily like a few hundred grey plates! Just how wide is the body? that's probably not the right dimension I'm asking for here... tall? as to compare a minifigs height.. (...) (25 years ago, 15-May-99, to lugnet.starwars)
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dimension
(score: 1.714)
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| | re:IR sensors
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| Hi everyone, i was wondering if it's possible to drive more than one infrared LED (emitter) through the handy board and IC. Has anyone tried doing before??? i want to model the wall-following behavior in my car, by using emitter-detector pairs on (...) (28 years ago, 3-Feb-97, to lugnet.robotics.handyboard)
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wall
(score: 1.714)
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| | Ranging techniques
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| Hello everyone... If I may be permitted to ask your input on some of the following... I have implemented a Polaroid sonar module and a GP2D02 IR ranging unit on a R/C servo actuated pan/tilt mechanism. I can put in "scan_long(45.0)" or (...) (25 years ago, 1-Jun-99, to lugnet.robotics.handyboard)
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measurement
(score: 1.714)
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| | Ranging techniques
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| Hello everyone... If I may be permitted to ask your input on some of the following... I have implemented a Polaroid sonar module and a GP2D02 IR ranging unit on a R/C servo actuated pan/tilt mechanism. I can put in "scan_long(45.0)" or (...) (25 years ago, 1-Jun-99, to lugnet.robotics.handyboard)
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measurement
(score: 1.714)
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| | How many times to upload??
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| Hello all, On the Handy Board, how many times can program files be uploaded to the memeory on the board? I am not much of a programmer and spend alot of time de-bugging. I can do as many as 30 uploads in an evening, all though, truth to tell, most (...) (25 years ago, 4-Jun-99, to lugnet.robotics.handyboard)
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measurement
(score: 1.713)
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| | Re: IR collision avoidance
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| (...) I'm sending this to other members of our robotics team because we JUST mastered wall-hugging IR this week. They may have other things to add. (...) Here's the pseudo code: Start Any bumpers hit? YES - Execute the back up, turn 90 degrees left (...) (28 years ago, 23-Feb-97, to lugnet.robotics.handyboard)
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wall
(score: 1.713)
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