 | | Stepper Control
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I am a new Handyboard user and would like to control a pair of 5 wire unipolar stepper motors. I followed the links in the FAQ related to steppers which included some IC code. My problem is that my Handyboard won't load that particular code written (...) (24 years ago, 16-May-00, to lugnet.robotics.handyboard)
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| | how many servos on handyboard?
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I'd like to know how many servos the handy board can control. On the FAQ it says 2, in the documentation it says 4 DC motors. what's the deal? (am I stupid? I'm new at this) also, when you plug an expansion board, do you get 6 EXTRA servos? or those (...) (24 years ago, 16-May-00, to lugnet.robotics.handyboard)
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| | Re: Ultrasonic maximum timing
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(...) Except that I don't think it counts at 2Mhz, rather I think it counts at 500Khz (2 / 4 = ECLK) (I may be totally off base here, since I've not read the pink book in about 6 years) that would put your max at 32767/500000 = .0655 at 1000 ft/sec (...) (24 years ago, 16-May-00, to lugnet.robotics.handyboard)
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| | Re: Ultrasonic maximum timing
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(...) I think the register maxes out at 32767. Since it's a 2 MHz processor, this gives: (32767 cycles) / (2,000,000 cycles/second) = 0.01638 seconds Up here in the Rocky Mountains, the speed of sound is about one centimeter every 143 (...) (24 years ago, 16-May-00, to lugnet.robotics.handyboard)
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| | Ultrasonic maximum timing
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Greetings all, I'm using a homebuilt sonar based on Kam Leang's design, which seems to be working quite well. I just have one question with regard to the timing on the input port. I'm using the same sonar driver as for the polaroid - right now I (...) (24 years ago, 16-May-00, to lugnet.robotics.handyboard)
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| | Re: Fwd: hellofriend
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(...) SCAM ! (not SPAM). These Nigerian attempts are well publicised in the media in Australia. They used to arrive by snailmail (my deceased father got one). Email ! moving up in the world ! People have been fooled, the scam is the 5% they remove (...) (24 years ago, 15-May-00, to lugnet.robotics.handyboard)
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| | Re: Fwd: hellofriend
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I've been getting snail mail from this same group for years, always offering to let you have a third of some huge sum of money if you will only help them smuggle it out of their country and into your account. What they actually want is access to (...) (24 years ago, 15-May-00, to lugnet.robotics.handyboard)
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| | RE: Fwd: hellofriend
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What's puzzling is why they thought an Handiboard mailing list was the place to find new pigeons... | -----Original Message----- | From: Keith Hearn [mailto:khearn@legato.com] | Sent: Monday, May 15, 2000 1:35 PM | To: Meabadboy@aol.com | Cc: (...) (24 years ago, 15-May-00, to lugnet.robotics.handyboard)
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| | Re: Fwd: hellofriend
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(...) A sad attempt at a con job. They claim they want yo give you custody of $35M (of whoich you're supposed to keep 30%), and all you have to do is send them your bank account number. Somehow I rather doubt a legitimate offer of this sort (if this (...) (24 years ago, 15-May-00, to lugnet.robotics.handyboard)
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| | Re: using 3v motors?
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In theory yes. Since the motor will be powered by the aux power supply only, as long as it is at 3 volt, it should be OK. (am I right, Prof. Martin?) -- Ray Wayne Crosbie <wcrosbie@home.com> wrote in message news:FuKHs7.B7v@lugnet.com... (...) 400 (...) (24 years ago, 14-May-00, to lugnet.robotics.handyboard)
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| | RE: hellofriend
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Yes, definitely spam! | -----Original Message----- | From: Meabadboy@aol.com [mailto:Meabadboy@aol.com] | Sent: Sunday, May 14, 2000 3:48 AM | To: handyboard@media.mit.edu | Subject: Fwd: hellofriend | | | SPAM??? | | (24 years ago, 14-May-00, to lugnet.robotics.handyboard)
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| | using 3v motors?
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Is there any way to use 3 volt motors on the Handyboard? They draw about 400 ma. Using a series resistor of about 10 ohms works, but it will have to be about 5 watts, consuming a lot of power needlessly. The FAQ shows how to run 6-36v motors through (...) (24 years ago, 14-May-00, to lugnet.robotics.handyboard)
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| | Fwd: hellofriend
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SPAM??? (24 years ago, 14-May-00, to lugnet.robotics.handyboard)
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| | hellofriend
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Date:14th.may,2000 Dear sir, it give us pleasure to request your indulgence in this extremely CONFIDENTIAl business proposition which we want you to handle for us IN YOUR PRIVETE CAPACITY. This total believe and reponse of trust in you, is in (...) (24 years ago, 13-May-00, to lugnet.robotics.handyboard)
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| | Running as11
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Hi, Has anyone been able to run as11 on a Mac? As a first test of the assembler, I've been trying to re-assemble pcode.asm, without success. Specifically, as11 balks at the preprocessor directives. I tried running pcode.asm through the CodeWarrior (...) (24 years ago, 13-May-00, to lugnet.robotics.handyboard)
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| | Re: Household Positioning System Re: DGPS
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I see. Humm. May be I can really use this. OK, if I put a few IR LED with ID at different locations in the room, and put them at the same height as the robot sensor so I don't need to worry about tilt angle. If I put the sensor fixed on the robot, (...) (24 years ago, 12-May-00, to lugnet.robotics.handyboard)
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| | Re: Household Positioning System Re: DGPS
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Actually, I am going in that direction. I was trying to use the ultrasonic transducer to produce a signal and then use two detector to triangulate the location. That wasn't much of a success. I will need to redo the parts. I want to try using more (...) (24 years ago, 12-May-00, to lugnet.robotics.handyboard)
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| | Re: Household Positioning System Re: DGPS
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(...) Some years ago i wrote the presentation part of a prototype system based on ultrasonic beacons. the beacons were plugged into wall outlets and transmitted their ID:s, i can't remember the details but the beacons were syncronized by (...) (24 years ago, 11-May-00, to lugnet.robotics.handyboard)
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| | Re: Household Positioning System Re: DGPS
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(...) No design, just an idea. The way I see it, you put a "Head" on the top of your robot. It has three sensors mounted for tilt and pan. The easiest way I can see it is to use gear head stepper motors with a "Home" switch to point the thing. The (...) (24 years ago, 11-May-00, to lugnet.robotics.handyboard)
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| | (no subject)
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unsubscribe (24 years ago, 11-May-00, to lugnet.robotics.handyboard)
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