 | | Re: two way radio question and data link
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Hi folks! I've found Terri Cherr's idea of using VHF data modules excellent, not only to exchange voice, but to communicate to a host computer also. The "robot" could send sensoring information to a computer (or even another robot) and receive (...) (26 years ago, 6-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Two Way Radio question
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Another possible neat solution would be to use a pair of VHF radio Data modules at each end. These normally send digital data, but if you pulse width modulate / demodulate at each end then audio could be sent. There is a company that advertises in (...) (26 years ago, 6-Dec-98, to lugnet.robotics.handyboard)
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| | RE: Looking for a Handyboard KIT
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Check out the MIT web site for vendors. I believe they list Gleason Research at a source. Here's the MIT web site: (URL) the web site for Gleason Research: (URL) this helps!!! Bill Denzel Senior Mechatronics Student California Polytechnic State (...) (26 years ago, 6-Dec-98, to lugnet.robotics.handyboard)
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| | Handy board for sale
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I have a handboard for sale, with display, only one L293D chip installed. Has passed all the checks in the assembly manual, as I understand them. $175.00 Also have a rug warrior board for sale, it is missing the L293D chip (it got put in the handy (...) (26 years ago, 6-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Two way audio -Reply
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The kit I used is DK-7 "FM transmitter bug" made by Marlin P. Jones & Assoc., Inc PO Box 12685 Lake Park, FL 33403-0685 (407)848-8236 FAX (407)844-8764 at least that is what is on the packaging label. It was $10 two years ago. I got mine at a local (...) (26 years ago, 6-Dec-98, to lugnet.robotics.handyboard)
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| | hbdl.exe download prob
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Hi, My Hb displays MEMMORY FAULT whenever I turn it on. SO I figured runneing the hbdl.exe would help aleviate this situation. When I run it however, it says it cannot open the port! Anyone know why? I have made certain that the serail port is (...) (26 years ago, 5-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Two way audio -Reply
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I will look for the schematic. The one I built was a $10 kit I bought. Mike -----Original Message----- From: The Plumber <jhoffman@it.sait.ab.ca> To: michaelj@wt.net <michaelj@wt.net> Cc: handyboard@media.mit.edu <handyboard@media.mit.edu> Date: (...) (26 years ago, 5-Dec-98, to lugnet.robotics.handyboard)
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| | Re: handy board ic programs
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(...) (26 years ago, 5-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Two way audio -Reply
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I would be interested in any schematics you would be willing to give up, maybe even a little theory behind operation. I must admit I am lacking quite a bit in the communications area. Thanks, Joe Hoffmann E-Mail jhoffman@it.sait.ab.ca (...) (26 years ago, 4-Dec-98, to lugnet.robotics.handyboard)
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| | RE: Sonar question
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That will only allow one half of the conversation. I suppose you could run with two kits, one receive, one transmit, both tuned to different frequencies. Another suggestion might be one of the cordless, battery operated intercom system units. Most (...) (26 years ago, 4-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Apple Microphones
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(...) I would only caution you that there are two types of microphones for the Mac -- regular mics and "PlainTalk" microphones. I suspect you are talking about a PlainTalk mic. The obvious distinguishing difference is the "longer than normal" male (...) (26 years ago, 4-Dec-98, to lugnet.robotics.handyboard)
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| | handy board ic programs
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i just recived a new handy board in the mail and wonder if any one could email me some sample programs in ic or a web site to down load some. most of the programs that came with the handy board were for diferent controlers. thanks wayne email (...) (26 years ago, 4-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Sonar question
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Radio Shack have a small FM Transmitter kit . I think it was about $10. Regards, Terry Howsham (26 years ago, 4-Dec-98, to lugnet.robotics.handyboard)
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| | Apple Microphones
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Has anyone used Apple computer microphones with their robots. The mic seems to have a left and right channel. It has a circuit board inside the case. I don't what the circuit actually does. It would great if I could just connect it to the handyboard (...) (26 years ago, 4-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Two way audio -Reply
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(...) CB radio's, Buisness radio (license needed), amateur radio (license needed, again), family radio (no license), etc. --phil (...) (26 years ago, 4-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Two way audio -Reply
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Yes, we have not only considered that idea, we have acted upon it. I guess the more operative question would have been: Is there a more efficient method of communication other than the wakie talkies? (...) (26 years ago, 4-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Two way audio -Reply
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That's a hard one because you have to have sufficient gain from the robot microphone to hear someone 2 to 8 foot from the microphone. Usually communication equipment limits their microphone gain on purpose to exclude background noise. You have to (...) (26 years ago, 4-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Two way audio -Reply
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(...) How about those teenie weenie FM radio microphones that they advertise "you can hear a wisper from 14feet away". Usually in "Electronics Now" and other magazines. (26 years ago, 4-Dec-98, to lugnet.robotics.handyboard)
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| | Two way audio -Reply
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How 'bout a cheap pair of voice activated walkie talkies?? (...) Hi, We are trying to transmit our voices to our remote robot to create the impression that the robot is talking. In addition, we want to be able to hear what the robot hears. Does (...) (26 years ago, 4-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Two way audio -Reply
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A couple of years ago I built a small FM transmitter that had a small microphone on it. I could hear whispers in the room next door when I turned it on and tuned in a small transister radio to its frequency. This may be an option. Mike (...) (26 years ago, 4-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Assembler math/PID
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Justin, Thanks for your reply. I assume you had one process doing the PID in a tight loop, and then had other concurrent processes doing other tasks. Was there ever a problem with the PID process not getting scheduled within the 1Khz system (...) (26 years ago, 4-Dec-98, to lugnet.robotics.handyboard)
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| | Two way audio
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Hi, We are trying to transmit our voices to our remote robot to create the impression that the robot is talking. In addition, we want to be able to hear what the robot hears. Does anyone know any products that we can attach to our robot that will (...) (26 years ago, 4-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Extra output for clocking
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Thanks for the advice on the ouput compare and portA. What I realized was the CPU time is being shared by some many functions, like the LCD printing, IR, PWM, that I'm not getting a fast enough pulse from the motor ports. I disabled a lot of these (...) (26 years ago, 4-Dec-98, to lugnet.robotics.handyboard)
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| | motor questions using motor(x,y)
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Hi all, The motor(x,y) function in the lib_hb.c file works as expected (the motor speed does vary depending on value given and the correct motor goes on), but when I actually have a motor in the header both LEDs go on! (and I get corresponding (...) (26 years ago, 3-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Sonar question
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The Polaroid Sonar board requires a supply voltage less than 7 volts. The battery of the handy board is around 12, so you'll probably shorten the life of your sonar board considerably if you connect it straight in (i.e. burn it up :.)). The diodes (...) (26 years ago, 3-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Sonar question
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(...) The battery for the handy board is a 9.6V cell (8 * 1.2V cells in series.) A normal 1n400X diode will drop 0.7V each. (6 * 0.7 = 4.2) 9.6 - 4.2 = 5.4V (26 years ago, 3-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Sonar question
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I'don't even bother using diodes at all I just use a 7805 voltage regulator that is well heat sinked and never had a problem with it -----Original Message----- From: ruizvic@mx1.ibm.com <ruizvic@mx1.ibm.com> To: handyboard@media.mit.edu (...) (26 years ago, 3-Dec-98, to lugnet.robotics.handyboard)
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| | Re: 2sonar
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(...) I haven't used the transducer multiplexor myself; I decided to just hook up a second sonar module to the HB in the same manner as the first is hooked up. It looks like using the multiplexor ought to be fairly simple, though. First off, in the (...) (26 years ago, 3-Dec-98, to lugnet.robotics.handyboard)
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| | Sonar question
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Hi to all, I would like to know what difference there are if I connect the 6 diodes between the Handy Board & the Polaroid Sonar Card. Can I connect the cards without diodes? I tested the voltage at the Catode at the end of the 6th diode and my (...) (26 years ago, 3-Dec-98, to lugnet.robotics.handyboard)
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| | Assembler math/PID
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Hello, I am writing PID code that runs on the system interrupt. I am finding that I have to rewrite alot of the great math functionality available through IC. Does anyone know of a way to use an IC function on a regular system interrupt schedule? (...) (26 years ago, 3-Dec-98, to lugnet.robotics.handyboard)
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| | motor code questions
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Hi, I got my Handyboard up and going and was trying the following code for driving my motors. (Figure I would try known code before forking out on my own). The code I got from the 'Inspiration to implemntation' book. Anyways it does not seem to (...) (26 years ago, 2-Dec-98, to lugnet.robotics.handyboard)
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| | sonar
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what program to control about 2sonar.jpg? how i adjust program (sonar.c) for 2 sonar in picture 2sonar.c? (26 years ago, 2-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Hacking Servos
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Thank you all very much for your help :) Best, Andre. (...) ===...=== Andre Philippi - Applications Developer | Phone: 626-296-5016 philippi@corp.earthlink.net | Fax: 626-296-5113 Earthlink Network, Inc. | 3100 New York Drive (URL) | Pasadena, CA (...) (26 years ago, 1-Dec-98, to lugnet.robotics.handyboard)
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| | RE: Hacking Servos
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Yeah, I remember seeing that one; I may actaully have the info at home... Anyway, an R/C servo has a hard stop to limit travel because the electronics use a simple potentiometer on the output shaft for position feedback. These pots typically have (...) (26 years ago, 1-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Hacking Servos
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(...) I put together a page with detailed instructions that has been used by a number of high school students without any problems. The robot is based on a Basic Stamp but the servo modifications are easy and work with any controller. (URL) (26 years ago, 1-Dec-98, to lugnet.robotics.handyboard)
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| | Hacking Servos
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Howdy Folks :) I remember reading a web doc a while ago on how to convert servos so their shafts can rotate more than 180 degrees... It was a nice doc, with pics, schematics, and everthing... but I lost the URL... :( Does any one know what doc am I (...) (26 years ago, 1-Dec-98, to lugnet.robotics.handyboard)
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| | Re: HandyBoard and iMac?
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It doesn't bother me that much: I haven't used a floppy in two or three years. I have ISDN at home: it's way faster than a floppy ;^). -- Eric (...) (26 years ago, 1-Dec-98, to lugnet.robotics.handyboard)
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| | 2sonar
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i use circuit on 2sonar.jpg . if i use sonar.c program, how i adjust this program for 2 sonar trasducers. ?(a picture on 2sonar.jpg) i want to 1 sonar working single , don't together.or to alternate. Sonar number 1(#1)is working until check (...) (26 years ago, 1-Dec-98, to lugnet.robotics.handyboard)
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| | 2sonar
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i use circuit on 2sonar.jpg . if i use sonar.c program, how i adjust this program for 2 sonar trasducers. ?(a picture on 2sonar.jpg) i want to 1 sonar working single , don't together.or to alternate. Sonar number 1(#1)is working until check (...) (26 years ago, 1-Dec-98, to lugnet.robotics.handyboard)
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| | 2sonar
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i use circuit on 2sonar.jpg . if i use sonar.c program, how i adjust this program for 2 sonar trasducers. ?(a picture on 2sonar.jpg) i want to 1 sonar working single , don't together.or to alternate. Sonar number 1(#1)is working until check (...) (26 years ago, 1-Dec-98, to lugnet.robotics.handyboard)
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