 | | sonar test and others
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Hi, My sonar is working!, I checked the wires and noticed that when soldered J12, I forget to cut the tail of the wire, maybe this was making contact with other part of the HB, I have also noticed the limitation to measure more than 2.6 m. , has (...) (24 years ago, 21-Apr-00, to lugnet.robotics.handyboard)
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| | memory problems!!
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Hi, I'm writting a C program for the HB that will allow it to be controlled by a LabVIEW software interface. The problem i'm having is that when my C code goes above 8Kb in size IC won'teven compiule it, it just crashes and the dos window closes. (...) (24 years ago, 21-Apr-00, to lugnet.robotics.handyboard)
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| | From Mac to Linux
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Hi, Guys: I meet a strang problem. We developed robot under Mac using IC version 3.1, everything works. Now we move to linux, we let fd(2), but it goes backward, we let bk(3), it goes forward. fd(3) and fd(3) is good. Sonar works. But our four (...) (24 years ago, 21-Apr-00, to lugnet.robotics.handyboard)
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| | Re: New Servo Routines?
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* Giang Tran <gt4025@chi.devry.edu> [000420 21:49]: (...) Silly me, I wasn't thinking that there would still be a mid point to the resistance. I was stuck on the fact that the new resistors would trick it into thinking that it never reached it's set (...) (24 years ago, 21-Apr-00, to lugnet.robotics.handyboard)
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| | sonar test
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Hi, I have connect the sonar to the exp. board, and when I run the function sonar_visual(), then the sonar began to click but I only get this: *****, I believe that the connectios are OK, if I disconect Digital 7, the display shows random numbers (...) (24 years ago, 20-Apr-00, to lugnet.robotics.handyboard)
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| | New Servo Routines?
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Because I have an expansion board, I cannot use my hacked up servo motors together with unaltered motors. In order to stop the hacked servos, I have to call init_expbd_servos(0) which dis-allows use of the other ones. Does anyone have any asm code (...) (24 years ago, 20-Apr-00, to lugnet.robotics.handyboard)
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| | sound generating questions
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hi, we have to generate a square wave for a pizeo buzzer, we would use the one on the handyboard, but this one has to be encased in a shell, which would only be unable to fit the handyboard. we tried just switching a digital out, on and off, and the (...) (24 years ago, 19-Apr-00, to lugnet.robotics.handyboard)
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| | measure the width of PWM pulses
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Dear All Does anybody have a routine to measure the width of PWM pulses from an R/C receiver (ie the pulses which control the servos). TIA David Young (24 years ago, 18-Apr-00, to lugnet.robotics.handyboard)
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| | Re: Sonar Pictures?
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(...) at, (...) Thank you to everyone who sent me a link to a picture of a completed sonar assembly, they've been very helpful even though I still can't get it to work :( As such, I still have questions, but for now this is the only one: - Does it (...) (24 years ago, 17-Apr-00, to lugnet.robotics.handyboard)
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| | problems met in my project
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Dear Sir, I am a student who is doing a mobile robot project. Since I am really a freshman in Robotics. So, I would like to ask you to help me to solve some problems met in my project. Please forgive me if my questions are too simple! My aim for the (...) (24 years ago, 17-Apr-00, to lugnet.robotics.handyboard)
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| | 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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