 | | Analogue sonar design.
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Hi all, I'm trying to build a sonar circuit and connect it to my HandyBoard. I know Polaroid makes one, but I have no idea where to get it for little in Europe. I try to keep the interface as simple as possible, and I'll probably be using three (...) (26 years ago, 25-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Infrared Detector
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Hi Rick; I apreciated your response too much. Do you have the part number for the infrared detector? Victor G. Ruiz Aranda ruizvic@mx1.ibm.com T/L 877-7306. Ph Number 011-523-669-7306 GPL Guadalajara, Jal. Mexico. rickmoll@mvp.net on 08/25/98 (...) (26 years ago, 25-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Infrared Detector
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(...) You might want to consider just using the more commonly available metal can IR detectors. I think they are even available at Radio Shack, and I think DigiKey sells them as well. The pinouts are *not* the same, so you'll need to work out some (...) (26 years ago, 25-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Infrared Detector
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Hi to all, I would like to know if somebody knows where can I found the address of an electronic distributor that sell individual 'infrared detector' IS1U60 from SHARP, I was looking in many electronic sites and the minimun is 50 pcs. I only need 2 (...) (26 years ago, 25-Aug-98, to lugnet.robotics.handyboard)
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| | No subject given
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Hay guys, Could some one tell me where can I buy a unassembled HB. Is it hard to assembled a HB? Thanks, -anton (26 years ago, 25-Aug-98, to lugnet.robotics.handyboard)
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| | Infrared Detector
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Hi to all, I would like to know if somebody knows where can I found the address of an electronic distributor that sell individual 'infrared detector' IS1U60 from SHARP, I was looking in many electronic sites and the minimun is 50 pcs. I only need 2 (...) (26 years ago, 25-Aug-98, to lugnet.robotics.handyboard)
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| | polaroid
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LS. I read something about the sonarboard. Bill James did write to Jim about Jim finding a solution for some board. I am interested in any solution to make my polaroid board work. It doesn't even make a sound. It doesn't work at all.....?? I wonder (...) (26 years ago, 24-Aug-98, to lugnet.robotics.handyboard)
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| | Re: 32K static CMOS RAM bad?
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(...) It sounds like the SRAM is just fine. Is your battery charged up??? If so, you may want to check out the battery backup circuit for the SRAM. In the HB assembly instructions there is a test to verify that the SRAM has voltage to it even when (...) (26 years ago, 24-Aug-98, to lugnet.robotics.handyboard)
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| | Sonar board?
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Jim, Congrats on getting the board to ping and read. If you believe you circuit is good, I would be willing to buy a board and etch some at the RBNO tommorow. That is if you have it laid out. I would give you a board for your hard work. Tell me and (...) (26 years ago, 24-Aug-98, to lugnet.robotics.handyboard)
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| | 32K static CMOS RAM bad?
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I am having some problems with my handyboard and before going out and buying a new chip, I thought I might get some confirmation. The board works okay, but no longer stores the program. I can download the pcode and it stays when the board is powered (...) (26 years ago, 24-Aug-98, to lugnet.robotics.handyboard)
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| | notice of downtime
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dear all, we are moving computers within the building next week, and the el.www web server will be down beginning Monday for a while -- hopefully, just a day or two. in the meantime, please use the old URL to access the Handy Board web site: (URL) (...) (26 years ago, 22-Aug-98, to lugnet.robotics.handyboard)
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| | Is the IO expansion board for sale yet?
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Hi All, I'm new to the handyboard and this newsgroup. So, I'm not sure if this question has been answered yet. But, is the I/O Expansion board out of beta yet? I haven't purchased a Handyboard yet, but was waiting until I finished a few projects and (...) (26 years ago, 20-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Is there a documentation on the memory map
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(...) Please see the FAQ; specifically: (URL) Can the handy-board be program using generic assembly language og 6811 ? see information on the Software/Contributed page: (URL) (26 years ago, 20-Aug-98, to lugnet.robotics.handyboard)
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| | Is there a documentation on the memory map
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Where can I find documents on the handy board memory map ? Can the handy-board be program using generic assembly language og 6811 ? ===...=== Osaka Densi Block 1003 Toa Payoh Industrial Park #04-1521, Singapore 319075 Tel : (65) 356-2848 Fax : (65) (...) (26 years ago, 20-Aug-98, to lugnet.robotics.handyboard)
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| | Where to find the clock signal
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Hello, I would like to link a clock signal to an encoder counter.Could someone tell me if it is possible to use the 2 MHz clock signal of the HB.If yes, where can I easily pick it on the HB. If not, what kind of independant clock circuit would you (...) (26 years ago, 19-Aug-98, to lugnet.robotics.handyboard)
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| | A simple question.....
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hello to all can someone please tell me if it is possible to connect external motor drivers (e.g a stepper motor driver) to the handy-board? if so, how can one go about doing it? i desperately need help as the dateline for my project is drawing (...) (26 years ago, 19-Aug-98, to lugnet.robotics.handyboard)
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| | re: A simple question.....
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I connected a high powered hbridge board to mine. I just used remove the existing hbridge chip and connect the inputs to the chip to the hbridge board made by Wirz. It works great. Bill James | work: 972.480.2306 Product Test Specialist | Pager: (...) (26 years ago, 18-Aug-98, to lugnet.robotics.handyboard)
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| | Re: source for Futaba servo motors?
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[Rick Moll] spake unto the ether: (...) I called them this morning and ordered 6 Futaba S148 servos; they had a 3-pack for <$40; with shipping, order total was $85.93. Nomenclature note: I confused the guy on the phone by asking about "servo (...) (26 years ago, 18-Aug-98, to lugnet.robotics.handyboard)
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| | Re: source for Futaba servo motors?
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(...) I've been buying lots and lots of servos from TowerHobbies (1-800-637-4989) and modifying them for our local robot group here in St. Louis. I've always received good customer service from them. The best prices on servos are their store brand (...) (26 years ago, 17-Aug-98, to lugnet.robotics.handyboard)
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| | source for Futaba servo motors?
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My previous source for Futaba (and compatible) servo motors, Images Company of Staten Island, NY, tells me they can no longer get them unless they're bundled with RC transceivers. Anybody have another source for just the servo motors? I want 6 (...) (26 years ago, 17-Aug-98, to lugnet.robotics.handyboard)
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| | I2C output
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Does anyone have any information on how to use the HB to output I2C signals thru it's SPI port? I'm interfacing it to the National LM4832 audio controller IC. Thanks! (26 years ago, 14-Aug-98, to lugnet.robotics.handyboard)
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| | Re: PID implementation
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(...) It seems that you have a feedback system here. How does battery voltage and surface resistance add error to your system when you have a feedback loop to correct your error signal? (...) No braking? We solved that problem by effecting reverse (...) (26 years ago, 13-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Some robot pictures
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Chuck, Thank your for the pictures. the robots are very cool. I was wondering what was the cost for each robot? I am trying to get items together to builb my own but it is a slow going task due to money. I can't wait to see your next bot. Thanks (...) (26 years ago, 13-Aug-98, to lugnet.robotics.handyboard)
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| | Re: intel hex file
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Hello brian, I use a gcc compiler for the 68hc11F1. I do have an assembler that generates good intel hex files, and the other is used with the gcc compiler. It was my mistake in not looking correctly to the files, actually it are the same kind of (...) (26 years ago, 13-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Stepper motors
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Hello mario, Its actually very simple, use an uln2803, connect it to an not used port (i.e. porta in my case), connect the coil wires to the appropriate pins, and the supply lines to the stepper vcc. now you can write values to the port. you should (...) (26 years ago, 13-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Some robot pictures
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Thanks for the Kudos, Actually the timeline is more like "Clyde" (not pictured), "Robotank" (Sherman chassis with a miniboard), "RobotTankII" (Sherman Chassis with 6.270 board), "Comet" (not pictured, R/C conversion w/Miniboard), "Ghost" (not (...) (26 years ago, 12-Aug-98, to lugnet.robotics.handyboard)
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| | Stepper motors
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Hello, Does anyone have information on how to run a stepper motor using the Handy Board? Any information you can provide would be appreciated. Mario Garcia (26 years ago, 12-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Some robot pictures
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Cool robots, Chuck! I was wondering it when they were created. It looks like the top one was created first and the last is the bottom one. Is that so? ---...--- ericson mar Master of Engineering Candidate Project: Mobile Robotics mar@cooper.edu (...) (26 years ago, 12-Aug-98, to lugnet.robotics.handyboard)
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| | Re: serial library for C++
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Check out this site. It works well. The only problem I had was timing issues when trying to read and write to the port too quickly. (URL) Message----- From: Mark Wallace <mawalla3@vt.edu> To: Handyboard@media.mit.edu <Handyboard@media.mit.edu> (...) (26 years ago, 12-Aug-98, to lugnet.robotics.handyboard)
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| | serial library for C++
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Hello, I have a handy board with poloroid transducers and I am trying use the results of my distance measurments in a C++ program on the computer. I have found programs on the handyboard web page that should alow the handyboard to transmit (...) (26 years ago, 12-Aug-98, to lugnet.robotics.handyboard)
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| | PID implementation
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Problem: I have built a small robot with differential drive using 3+ACI- diam whee ls turning at 66 RPM +AEA- full power PWM no load. Each wheel has a 16 pulses per rev. reflective type shaft encoder. the robot is controlled by the Handy Board (...) (26 years ago, 12-Aug-98, to lugnet.robotics.handyboard)
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| | intel hex file
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Hello all, Does anybody has information of the intel hex file. I do understand the intel hex file (xxx.hex) that is generated by the asm programs, but i use a new assembler, (with the gcc compiler) and it generates different intel hex file (...) (26 years ago, 12-Aug-98, to lugnet.robotics.handyboard)
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| | PCB
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fthompson wrote: "Some time ago Karl Lundt included in his Amateur Robotics column a short description of a new Printed Circuit Fabrication material where you ran the copper clad through a laser printer (to print directly onto the copper rather than (...) (26 years ago, 11-Aug-98, to lugnet.robotics.handyboard)
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| | Re: mmu
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It's not impossible. The easiest way is to use the same technique as Java (or IC) and write an embedded interpreter that executes code for a "psuedo" machine. The resulting machine can have arbitrarily strict access restrictions between tasks. You (...) (26 years ago, 11-Aug-98, to lugnet.robotics.handyboard)
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| | PCB Fabrication material.
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Some time ago Karl Lundt included in his Amateur Robotics column a short description of a new Printed Circuit Fabrication material where you ran the copper clad through a laser printer (to print directly onto the copper rather than using iron on (...) (26 years ago, 11-Aug-98, to lugnet.robotics.handyboard)
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| | Re: General use PCB
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Ed: In a message dated 98-08-05 11:51:18 EDT, you write: << We have been using the Radio Shack, Archer board #276-162A. Specifications: Dimensions 3 inches x 4 inches, with copper lands on one side. 30 holes by 25 holes with mounting holes at 2.5 (...) (26 years ago, 11-Aug-98, to lugnet.robotics.handyboard)
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| | Handy Board Available.
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To Anyone Interested, I have a nearly brand new complete Handy Board for Sale. I used it one week and unfortunately it does not have the capability to do what I want. It is complete with battery installed, serial/charger board, software for IBM, (...) (26 years ago, 11-Aug-98, to lugnet.robotics.handyboard)
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| | mmu
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Hello all, i'm trying to write a small OS, but am confused about something. I don't want to give access to all memory locations for the user, only for the supervisor. Since the 68hc11 doens't have these modes i have to think of something else. A (...) (26 years ago, 11-Aug-98, to lugnet.robotics.handyboard)
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| | ports question (cont)
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... just to follow up on my question: i'm trying to read the photosensors through the analog ports. however, the value returned by analog(i) is always 255, so perhaps i have the sensors hooked wrong. when i read "analog(0);" it always retunes 255, (...) (26 years ago, 10-Aug-98, to lugnet.robotics.handyboard)
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| | ports question
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hi, looking at the sensor diagram at: (URL) see something like this: signal =====||= =||= +5V =====||= ground ====||= on the actual hb, do the three rows of holes along the "bottom" or near edge of the board correspond to the sensor diagram in terms (...) (26 years ago, 10-Aug-98, to lugnet.robotics.handyboard)
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