 | | Re: handy board troubles...
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gary -- it's an interesting bug. as you say you've got two 2-dim arrays, i can surmise that you're using Newton Lab's version of IC. In which case, they'd be the ones to address this problem. re: mailing list, it's now administered through LUGNET. (...) (24 years ago, 16-Apr-00, to lugnet.robotics.handyboard)
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| | Re: handy board troubles...
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This isn't technically a Handy Board problem as my code is being run on a Rug Warrior look-alike. However, I suspect that the same problem I'm experiencing would happen on my Handy Board if eviscerated one of my other robots and tried it. (...) (24 years ago, 15-Apr-00, to lugnet.robotics.handyboard)
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| | How to change the baud rate of Interactive C
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Interactive C communicates with the 68HC11 at 9600 baud, but if you'd like to change that -- say, to maintain interactivity over a slow RF link -- it is easy to hack the software, at least in Mac version 3.1. I'm indebted to Randy Sargent who sent (...) (24 years ago, 15-Apr-00, to lugnet.robotics.handyboard)
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| | Re: Battery Charging Question
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Thanks for the tip. I think you are right. I got a NiMH catalogue from Panasonic and it makes some of the same recommendation such as charge rate, etc. It is much like NiCD if you charge the battery "watching the clock". I am planning on building a (...) (24 years ago, 15-Apr-00, to lugnet.robotics.handyboard)
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| | Re: About HAndy board and PIC... last one
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Oh, one more thing. I got my Handyboard from Patrick Hui/The Robot Store at Hong Kong. (URL) It is a little cheaper than Gleason Research. Ok, I will say no more.... -- Ray Du Toit, Francois (SEB IS FDP Developers) <handyboard@media.mit.edu> wrote (...) (24 years ago, 15-Apr-00, to lugnet.robotics.handyboard)
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| | Re: About HAndy board and PIC ... one more
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Oh, here is something more about my robot. I am programming the PIC to run the legs, so I can take to load off the handyboard. I will still use the handyboard since I like IC. But to have the Handyboard to run that many servos or stepper motors are (...) (24 years ago, 15-Apr-00, to lugnet.robotics.handyboard)
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| | Re: About HAndy board and PIC
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Hi, Sorry for taking me so long to reply... I was busy working on projects... Actually, I am not a good person to ask all these questions. I am also just getting started on this.... I want to first refer you to another site: (URL) This page contains (...) (24 years ago, 15-Apr-00, to lugnet.robotics.handyboard)
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| | Re: Sonar Pictures?
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Joe! Here's another pic of the sonar interface to the HB. Note that there are two ways to connect the sonar to the HB. One approach is to use the control lines to the L293 motor driver chip and the other is the SPI port. I've included both. Note (...) (24 years ago, 15-Apr-00, to lugnet.robotics.handyboard)
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| | Re: Sonar Pictures?
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(...) Try this picture: (URL) This shows the cap soldered in and pretty much hooked up. Hope this helps -Jim Munro <jimmn@xnet.com> (24 years ago, 14-Apr-00, to lugnet.robotics.handyboard)
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| | Sonar Pictures?
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Does anyone have pictures of their sonar assembly online that I could look at, just to make sure everything is where it should be? My sonar is still hovering around one reading (today it's 1300, the other day it was 700) no matter where an obstacle (...) (24 years ago, 14-Apr-00, to lugnet.robotics.handyboard)
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| | Re: DC motor question
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(...) [snip] (...) Bingo. Put .1uf caps (rated at least 4X your max voltage) from the (+) pole to the can, from the (-) pole to the can and from the (+) to the (-) pole. Keep your leads as short as possible. Put a big cap (1000uf+) on the power (...) (24 years ago, 14-Apr-00, to lugnet.robotics.handyboard)
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| | DC motor question
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Hi, I am using DC Motors for the first time (previously used stepper motors) and have been experiencing difficulties when first powering on the handyboard. When I first turn on the power, occasionally the motors start up at full speed for no (...) (24 years ago, 14-Apr-00, to lugnet.robotics.handyboard)
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| | Re: Eltec 442-3
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(...) Perhaps you could waggle it back & forth (on a servo or something) to simulate motion. -- Will +---...---+ | ^^ <^ ^> | | / òó ó°° \ | | / =Y= U \ | | Wendy, Will, Tatoosh & Tenzing | +---...---+ The difference between reality and fiction? (...) (24 years ago, 13-Apr-00, to lugnet.robotics.handyboard)
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| | Re: Eltec 442-3
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(...) Move the sensor, or the bot. If you sweep right to left you will detect the heat in front of you. -- Eric (24 years ago, 13-Apr-00, to lugnet.robotics.handyboard)
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| | Eltec 442-3
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Hi all I just recieved a new Eltec Pyroelectric sensor from acroname and have been messing around with it on my bot. In the booklet it says that the sensor is a Human Motion detector as apposed to a human presence detector. when there is a heat (...) (24 years ago, 13-Apr-00, to lugnet.robotics.handyboard)
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| | Sonar
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I finally got some time and tried to put together the sonar assembly we purchased from Acroname (unit R14-SONAR1 - Instrument Grade Kit). All the wires are jury-rigged up (didn't want to permanently afix them yet) but they seem to all be making (...) (24 years ago, 12-Apr-00, to lugnet.robotics.handyboard)
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| | Re: More torque
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One word "Chopper" Nearly every commercial stepper motor driver I have ever seen uses a chopper circuit. This is because torque is related to current (actually its related to magnetic flux but that's related to current :-). The operation of a (...) (24 years ago, 12-Apr-00, to lugnet.robotics.handyboard)
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| | Re: about robots and handy board
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Francis, Thanks for the info! I'm not an expert, but doesn't PIC stand for "Peripheral Interface Controller"? Well, I guess it's all just semantics, they both could be correct... Just wondering, John Wynne (...) (24 years ago, 12-Apr-00, to lugnet.robotics.handyboard)
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| | More torque
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Is there an easy way to get more torque out of a stepper motor? Upping the voltage is not an option at this time. I've already decreased the width of the pulses enough (so that it has enough torque to start on its own without a push) that it goes (...) (24 years ago, 12-Apr-00, to lugnet.robotics.handyboard)
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| | Re: about robots and handy board
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Dear Francois A du Toit: PIC stands for Programmable Integrated Circuit. Generally it is what we call a microcontroller. You write a program in Assembler, burn that program into the PICs EPROM or EEPROM. Then when you put the PIC in its circuit, it (...) (24 years ago, 12-Apr-00, to lugnet.robotics.handyboard)
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| | Handy Board MTBF
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no, it has never been evaluated for mean time between failures. fred (24 years ago, 10-Apr-00, to lugnet.robotics.handyboard)
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| | Re: Textbook
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(...) "Mobile Robots" is a nice book. I really liked it. Is there anybody who knows more about "Build Your Own Robot!" by Karl Lunt? It's available on-line but I haven't found any reviews for it yet. Does anybody have it? Is it any good? -- Eric (24 years ago, 10-Apr-00, to lugnet.robotics.handyboard)
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| | Re: Textbook
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[Joe Kopena] spake unto the ether: (...) Wait for Fred Martin's book (it's due out in the fall, isn't it?) My self-taught practical engineer's take on robotics is that you can't separate the brain from the body, so to speak. Computer scientists tend (...) (24 years ago, 10-Apr-00, to lugnet.robotics.handyboard)
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| | Re: Textbook
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Hi. Here's a recommendation: Artificial Intelligence and Mobile Robots Edited by: D. Kortenkamp (NASA), P. Bonasso (NASA), and R. Murphy (U. South Florida) MIT Press (1998) This book is a collection of research papers and editorial essays. It is not (...) (24 years ago, 10-Apr-00, to lugnet.robotics.handyboard)
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| | Re: Textbook
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(...) How about the Joe Jones/ Anita Flynn book "Mobile Robots" ? That has alot of good intro materials and it's not too ridiculously expensive. Supports Interactive C too. Either that or the new Karl Lunt book, which I haven't yet seen. Heard it (...) (24 years ago, 10-Apr-00, to lugnet.robotics.handyboard)
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| | WTB:handyboard
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hi, i would like to buy a handyboard or borrow one(i'll pay for usage) for a week from someone on this dlist. my partner and i were going to use a HP calculator as a controller for a robot, but we haven't been able to get the compiler to work on the (...) (24 years ago, 10-Apr-00, to lugnet.robotics.handyboard)
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| | Textbook
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Can anyone on here reccomend a good textbook for a robotics class? The class is intended for upperclass and graduate computer science students who have already taken classes in artifical intelligence. We're going to be using LEGO kits and (...) (24 years ago, 10-Apr-00, to lugnet.robotics.handyboard)
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| | servos
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Hi, Could someone tell me what the advantages of the servo_a7.icb over the servo.icb are?? thanks (24 years ago, 10-Apr-00, to lugnet.robotics.handyboard)
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| | Re: About HAndy board and PIC
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Hi there Just saw your message and thought I could give you a few tips... I also live in SA and have built a HandyBoard. From my experience so far, a robot built around the HandyBoard is very easy to get going, has a wide range of posiblities and is (...) (24 years ago, 10-Apr-00, to lugnet.robotics.handyboard)
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| | About HAndy board and PIC
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I have read od a newsgroup of robotics that you have build a robot with the Handy Board with a PIC. What advcie can you give me . I have to start from scrath . What I need to buy Handy Board + (what componets+tools??) to build a soccer player (...) (24 years ago, 10-Apr-00, to lugnet.robotics.handyboard)
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| | brushless motors
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has anyone had any success hooking up brushless motors to a handyboard? basically, the problem i'm having is there is only one gnd pin on the motor, which is both for the internal digital logic and to sink the current through the motor. it's a (...) (24 years ago, 10-Apr-00, to lugnet.robotics.handyboard)
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| | Time measuring problems
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Hi all, I hope someone out there can help me with this, I'm going nutz (actually i think i'm already there). I am trying to measure a short period of time. Ultimately this will measure ultrasonic ping/echo using Kam Leang's ultrasonic circuit. Right (...) (24 years ago, 8-Apr-00, to lugnet.robotics.handyboard)
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| | What is the best brand/type of rechargeable battery and recharger in sizes AAA-D ?
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Hello, I was wondering what types/brands of rechargeable batteries people have used and recommend for common use in electronics such as alarm clock, portable radios, etc.. Thanks, John Jeong (24 years ago, 8-Apr-00, to lugnet.robotics.handyboard)
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| | Re: 5V of trouble
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those two things together strongly suggest that your crystal isn't running. any chance you can get a scope or logic probe to verify this -- measure the E clock output of the 'hc11 (pin 5). also, check that you've properly installed a 2.2 megaohm (...) (24 years ago, 6-Apr-00, to lugnet.robotics.handyboard)
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| | 5V of trouble
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i'm assembling the handyboard according to the instructions found on the HB site. When measuring the E clock signal using a voltmeter, i register 5V instead to the anticipated 2.5V. i've re-checked all the solder joints but there doesn't appear to (...) (24 years ago, 6-Apr-00, to lugnet.robotics.handyboard)
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| | Re: Output to file option for IC?
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(...) Here's a stupid idea, but might be the simplest: Run a dumb terminal program. I keep a very old version of Telix for DOS around for this purpose. Most of the dumb terminal programs have some option or other for logging or capturing to a file. (...) (24 years ago, 6-Apr-00, to lugnet.robotics.handyboard)
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| | Re: Motor Drivers
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(...) As others have said, the system should be able to drive this. However there are some obvious 'thoughts': 1) A light that draws 300mA when running, will _momentarily_ draw a much higher value when the bulb is cold. The actual ratio between the (...) (24 years ago, 6-Apr-00, to lugnet.robotics.handyboard)
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| | Re: Output to file option for IC?
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We have a system that was designed to let you run IC-like code on a host as if it were running on the HB. We use the HB as an extension to a larger mobile robot (the HB turns on lights, motors, etc. Our robot served candy via voice command at last (...) (24 years ago, 6-Apr-00, to lugnet.robotics.handyboard)
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| | Output to file option for IC?
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It would be cool if IC can output results to a file. well, since it can't does anyone have code available for borland c++ which will receive data over the serial port? I found some code from earlier posts, but can't seem to find one that works. I (...) (24 years ago, 6-Apr-00, to lugnet.robotics.handyboard)
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| | Re: Motor Drivers
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300 mA shouldn't be a problem. are your main batteries low? alternately, are you sure it's 300 mA at 9v? can you measure it somehow. fred In your message you said: (...) (24 years ago, 6-Apr-00, to lugnet.robotics.handyboard)
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