 | | 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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| | AS11_IC assembler
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Dear All I'm trying to use the AS11_IC assembler which comes in the pcode_pc zip file. I'm getting 'file not found' and 'can't open' messages left, right and center. All the necessary files seem to be in the right directories, except for ascpp1.asm (...) (24 years ago, 11-May-00, to lugnet.robotics.handyboard)
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| | Re: expansion board problems
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Claudia Bernett wrote: <snip> (...) <snip> I wonder if the mats aren't perhaps generating electrostatic discharge (ESD), which can wreak havoc with many solid state devices. -- Will (24 years ago, 11-May-00, to lugnet.robotics.handyboard)
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| | Re: expansion board problems
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Claudia, Without a lot more detail, it will be difficult to solve this one over the internet. If you can take a few minutes and regroup, maybe someone will have an idea. The kinds of things it would be good to know, interspersed with my comments: 1. (...) (24 years ago, 10-May-00, to lugnet.robotics.handyboard)
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| | Re: expansion board problems
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a follow-up to my own message - it seems that this problems occur WHILE i am actually running the application and using the project. if anyone can help at all - i would be very grateful, i am at a loss and urgent to get this working. i have built (...) (24 years ago, 10-May-00, to lugnet.robotics.handyboard)
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| | Re: Household Positioning System Re: DGPS
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Cool idea. Do you have it working? Or do you have a schematic that is somewhat working? If so, I want to test out how accurate it will be. It will be fun to use the LED as landmarks in the building. -- Ray <handyboard@media.mit.edu> wrote in message (...) (24 years ago, 10-May-00, to lugnet.robotics.handyboard)
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| | guipossebon@zipmail.com
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Hello people: I´m a student from PUCRS(Brazil) and I have to finish my conclusion Work in my course(Mecatronical Engineering) and I need to Know how I modify the frequency in MC68HC11 set in 500Hz to 5KHz because the drivers need work to control a (...) (24 years ago, 10-May-00, to lugnet.robotics.handyboard)
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| | Sonar (yes, it's me again, with more sonar questions!)
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Today several members of my lab and I decided to solder together the sonar assembly which had been previously been held together by large quantities of duct tape. We decided the 9-pin connection strip would be too flimsy and unnecesarily difficult (...) (24 years ago, 9-May-00, to lugnet.robotics.handyboard)
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| | RE: Household Positioning System Re: DGPS
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Can we use RF for the communication? The concept is much like the actual GPS systems, triangulate the position with 3 or more signals looking forward for a system like this Kalyan (not an Electronics engineer) -----Original Message----- From: (...) (24 years ago, 9-May-00, to lugnet.robotics.handyboard)
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| | Household Positioning System Re: DGPS
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(...) How about a beacon system. Each room can have 3 or so beacons high on the wall. Each beacon flashes at 38Khz and each beacon modulates this 38KHz with its own personal code. The top layer of your robot would have 3 or 4 directional sensors (...) (24 years ago, 9-May-00, to lugnet.robotics.handyboard)
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| | expansion board problems
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hello. i seem to be having an expansion-board problem which is very puzzling. i am using all sixteen ports, and am in the process of putting together a project which requires that it be stored with all sixteen ports occupied for a week or two at a (...) (24 years ago, 9-May-00, to lugnet.robotics.handyboard)
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| | DGPS
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(...) If you use differential GPS (which includes a nearby stationary receiver at a known coordinate) you can get much better resolution -- down to sub-meter accuracy. Still might not be enough to avoid the furniture, though. Forget global. We need (...) (24 years ago, 8-May-00, to lugnet.robotics.handyboard)
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| | Re: Clinton Acts to Make GPS Systems More Accurate
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(...) you're making an outside 'bot? Note: I've heard everything from 6 meters to 17 meters, and I'm not sure of the exact figure yet. I was too busy last week to study the GPS change. Curt Mills, WE7U hacker.NO_*SPAM@tc.fluke.com Senior Methods (...) (24 years ago, 8-May-00, to lugnet.robotics.handyboard)
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| | charger
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Hi, Forgot to tell that the board did download the p-code and seems to work ok with the new battery installed. Also when I plug the charger adapter directly into the handyboard the yellow led flickers between bright and dim for about one minute then (...) (24 years ago, 7-May-00, to lugnet.robotics.handyboard)
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| | battery charger board
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Hi Folks, Had a bad experience with my handyboard thos past week, I left it on charge accidently for two days-could possibly even been in the zap mode I'm not sure. What did happen was the battery was dead ,r-11 was hot and turned black and the (...) (24 years ago, 7-May-00, to lugnet.robotics.handyboard)
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| | Re: sharp GP2D02
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Hi, (...) (24 years ago, 4-May-00, to lugnet.robotics.handyboard)
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| | I need some help
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Hi guys I have some problems with the assembly of my HB because I don't find some of the components, I hope some of you can help: What replacement can i use for the motor driver l293D? What is a "voltage monitor" , What another device can I use for (...) (24 years ago, 4-May-00, to lugnet.robotics.handyboard)
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| | Re: What the? (Was: Re: 50 Megs of web space for $9.95 a month!)
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todd's right, the MIT list has no spam protection, if it gets bad we'll have to move all remaining subscribers from the MIT side and go 100% lugnet. right now i still have 300+ people on the MIT list -- urgh. fred In your message you said: (...) (24 years ago, 3-May-00, to lugnet.robotics.handyboard)
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| | Re: What the? (Was: Re: 50 Megs of web space for $9.95 a month!)
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(...) Looks like it came in through the original Handy Board mailing list handyboard@media.mit.edu at MIT which is gatewayed with the lugnet.robotics.handyboard group/list. Hmm, that makes two spams now in the past few days. I don't think the HB (...) (24 years ago, 3-May-00, to lugnet.robotics.handyboard)
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| | What the? (Was: Re: 50 Megs of web space for $9.95 a month!)
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(...) Um.........sorry if this has happened before but, was this approved by Todd to be posted on Lugnet? Or is it just a spam program that hacked into Lugnet? I'm confused. Erin -- (24 years ago, 3-May-00, to lugnet.robotics.handyboard)
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| | 50 Megs of web space for $9.95 a month!
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50 Megs of web space for $9.95 a month!!!! Unlimited E-Mail boxes at yourdomain.com and much more! We offer web hosting in a number of different packages. Tired of paying alot for web hosting and not recieving quality customer service? Try out our (...) (24 years ago, 3-May-00, to lugnet.robotics.handyboard)
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