 | | 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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| | problem with digital ports.
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Hi all, I have a problem with my handyboard where it seems that all the digital ports are not responding. While all the other analog and motor ports are fine. Also when I tried to use the program hbtest.c to test the board, it is not working neither (...) (26 years ago, 10-Aug-98, to lugnet.robotics.handyboard)
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| | Some robot pictures
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Hi, I've built several robots over the years and for the RoboExpo in SF I put together a web page with pictures showing them off. Most are R/C conversions but you can view them at (URL) happy to answer questions as well. All except the last one use (...) (26 years ago, 10-Aug-98, to lugnet.robotics.handyboard)
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| | RE: How do I limit current effectively?
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That may be fine, I'm not really very well versed electronically but when doing something similar I had worried that a resistor would reduce the voltage. That might be ok in this situation. Joe Martin (...) (26 years ago, 10-Aug-98, to lugnet.robotics.handyboard)
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| | Re: How do I limit current effectively?
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Why not use a 12ohm 10watt power resistor instead? --Chuck (...) (26 years ago, 10-Aug-98, to lugnet.robotics.handyboard)
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| | Re: mouse
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(...) You might want to try using a "bus" mouse rather than a "serial" mouse (assuming they still make them). They use to be quite common on PC's that had an ISA bus. On a "bus" mouse, all of the encoder outputs are brought out to a board that plugs (...) (26 years ago, 9-Aug-98, to lugnet.robotics.handyboard)
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| | re: mouse
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has anybody try to run a robot based on a mouse to keep trak of his position? what are the settings to observe the string comming out of the mouse?? Yhanks for any info CHEERS henry (26 years ago, 9-Aug-98, to lugnet.robotics.handyboard)
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| | Re: RC Car Robot Base
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Try this from Tamiya, they have a wide range of RC cars/trucks. www.tamiya.com (...) (26 years ago, 9-Aug-98, to lugnet.robotics.handyboard)
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| | RE: How do I limit current effectively?
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National Semiconductor make an "LM317" 3 terminal adjustable regulator which can easily be used as a current limiter. I am not sure if the schematic for this particular application is included with the Data sheets so I'll add it here. Current (...) (26 years ago, 9-Aug-98, to lugnet.robotics.handyboard)
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| | How do I limit current effectively?
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I have 2 large motors that draw about 2 amps. They are powered by a battery that's 6v at 2amp. How can I limit the motors so that they can only draw 1/2 amp????? I know on my first robot (ahh, fine memories of burning resistors), I just made a bank (...) (26 years ago, 9-Aug-98, to lugnet.robotics.handyboard)
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| | RC Car Robot Base
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All: I am trying to find a World Scale RC Car/Truck base for my robot. One of the items I have been looking at was the Thunder King RC Monster Truck from MRC/Tower Hobbies, but they have recently discontinued that part. Does anyone have any (...) (26 years ago, 8-Aug-98, to lugnet.robotics.handyboard)
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| | Re: windows nt and hb
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the advise of turning off the serial port under NT was only to enable using the IC DOS apps. if you are using contemporary software tools, then it is not necessary to do so. just access the serial port according to the recommended manner. fred In (...) (26 years ago, 8-Aug-98, to lugnet.robotics.handyboard)
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| | windows nt and hb
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hi i have a java app which gets input from the serial port via jni (java native interface) and c++. i'd like to get input from 4 photo sensors via the handyboard. however, i read in the FAQ that because i'm running windows nt, i will need to "turn (...) (26 years ago, 8-Aug-98, to lugnet.robotics.handyboard)
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| | Re: what is poke and peek command
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(...) <snip> The poke command writes a byte (eight bits) into memory. The peek command reads a byte from memory. The bit_set command turns on the specified bits of a byte in memory, but leaves the other bits unaffected. An integer constant that (...) (26 years ago, 7-Aug-98, to lugnet.robotics.handyboard)
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| | No More Miniboard Sales to Hobbyists
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I am sorry to announce that, as of 8/1/98, CW Technology will no longer offer Miniboards for sale to individuals, outside the United States, or in lots of less than 5. Due to a lack of time and the resulting poor service, I simply cannot continue to (...) (26 years ago, 7-Aug-98, to lugnet.robotics.handyboard)
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| | Interfacing I2C devices
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Can the HandyBoard interface to I2C devices through it's SPI (or otherwise) port? If so, does anyone have the source code to do so? I am interfacing the National LM4832 chip to it. Thanks in advance. (26 years ago, 7-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Pull Up Resistor
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(...) One more thought. I assume you are using a seperate supply (of some sort) for the Sonar module, so be sure to tie the pullup to the HB's +5V! Rick (26 years ago, 6-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Pull Up Resistor
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(...) I just checked my copy of the Polaroid Sonar Module documentation, and it does in deed state that the module can sink up to 0.1 mA when ECHO is pulled high. It sounds like your module is drawing around 0.064 mA = ((5V - 2V)/47Kohms), so it is (...) (26 years ago, 6-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Pull Up Resistor
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I checked the ECHO signal and found it to be at 2.0V when plugged into TIC3 on the HB. I also applied a pull-up resitor which did send ECHO to 5V when not pinging. However, in both cases, I still had seemingly random positive and negative values (...) (26 years ago, 6-Aug-98, to lugnet.robotics.handyboard)
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| | what is poke and peek command
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Hi, How to understand what is poke( 1009, 0x20) and bit set (1008, 0x20) ? What is 0 x20 and 0x30 ? how to interpret it ? when should I use 0x20 ,0x30, or 0x40 ? what is all these ? Please advice ? I need to understand it so that I can proceed to (...) (26 years ago, 6-Aug-98, to lugnet.robotics.handyboard)
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| | request o schmetic circuit
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HI, Has anybody has the schmetic circuit on the IC of U5 (74HC244 tristate bus driver) which located on the HD ? If have it , please attach to me. Thank you. rgds, phillip chia (26 years ago, 6-Aug-98, to lugnet.robotics.handyboard)
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| | HOW TO UNSUBSCRIBE
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Please, do not send unsubscribe requests to the main Handy Board mailing list. Instead, send them to me, Fred Martin, fredm@media.mit.edu. I am the only person who can remove you from the list. Thank you for your consideration of others on the (...) (26 years ago, 5-Aug-98, to lugnet.robotics.handyboard)
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| | unsubscribe
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(26 years ago, 5-Aug-98, to lugnet.robotics.handyboard)
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| | Re: voltage regulator
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there is probably some other circuit on your board that is drawing too much power. put your finger on the other chips and see if any of them is hot (there shouldn't be any). if necessary, remove all socketed chips to see if you can get the (...) (26 years ago, 5-Aug-98, to lugnet.robotics.handyboard)
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| | Re: General use PCB
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I too was going to suggest AP having done business with them in the past, however you have to note that they have a 'high density' drilling surcharge. This surcharge is 1 cent for every hole over 24 in 1 sq " of board. Thue "perfboard" (10 x 10 (...) (26 years ago, 5-Aug-98, to lugnet.robotics.handyboard)
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| | voltage regulator
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The voltage regulator on my board (U13) gets so hot that when i touched it it burned my finger. I am using the recomended 12V 500ma ac adaptor. I have been having problems testing the motor circutry and the red motor lights light up when i turn the (...) (26 years ago, 5-Aug-98, to lugnet.robotics.handyboard)
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| | Re: General use PCB
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(...) Option #1: How about making some of your own? If you need 60, then the prices from board houses start getting pretty low. Check out these places: (URL) made up a small spreadsheet for expresspcb and apcircuits pricing, and at quantity 60 you (...) (26 years ago, 5-Aug-98, to lugnet.robotics.handyboard)
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| | digital out
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I am in the need for additional digital outputs. I have read the FAQ and found out that to get 8 more digital outs, I have to connect the 'hc374' clock line to any of the unused output latch selects of the 'hc138'. Has anyone done this? If so, any (...) (26 years ago, 5-Aug-98, to lugnet.robotics.handyboard)
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| | Pull Up Resistor
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Hi, The polaroid documentation mentions that a 4.7K resistor should be placed between ECHO and Vcc. Should this be done when interfacing to the HB? Thanks, Sheridan (26 years ago, 5-Aug-98, to lugnet.robotics.handyboard)
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| | Handy Board for Sale!
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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, 5-Aug-98, to lugnet.robotics.handyboard)
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| | General use PCB
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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 inch and 3.5 inch spacing. We have to told that Radio Shack (...) (26 years ago, 5-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Pull Up Resistor
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(...) The sensor connectors on the HB already have pullup resistors on the signal inputs (as I recall they were 47K), so you shouldn't need to add an additional pullup. If you want to make sure, just check the signal connection with a voltmeter to (...) (26 years ago, 5-Aug-98, to lugnet.robotics.handyboard)
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| | yet another hb for sale
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One Handyboard, from Gleason Research, specifically GRHB-PC, with all cables, power supply, software, LCD, battery, charger board, etc. Get it with two Lego 9 volt gearmotors (they cost me $19 each) and my key for IC 3.2. Used for one small project, (...) (26 years ago, 5-Aug-98, to lugnet.robotics.handyboard)
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| | troubleshooting
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I am assembling my handyboard and am at the stage where i have completed the motor and analog circuits. When I test hte analog circuit the LCD screen prints"press START to test knob..." when i press start the board beeps and the screen goes blank. (...) (26 years ago, 5-Aug-98, to lugnet.robotics.handyboard)
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| | CW TECHNOLOGY
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ALL, Do you know if the guy from CW Technology who sells MiniBoard is still doing selling them. I sent him an email, but no reply so far. Thanx. Hachemi (26 years ago, 5-Aug-98, to lugnet.robotics.handyboard)
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| | mouse encoders
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hello, does anyone know how to interface the handyboard with a shaft encoder from a mouse? i am interested in using one out of a microsoft mouse, which uses electrical contacts, instead of an optical sensor. what kind of signal is sent from the (...) (26 years ago, 4-Aug-98, to lugnet.robotics.handyboard)
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| | Re: speed of the board
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From: (...) I assume you are going to need to do trig functions as well? I've written software that functions as a 2-D odometer, and uses encoders on the two wheels, and I had to write sin,cos,atan2 functions. How are you getting rotational (...) (26 years ago, 4-Aug-98, to lugnet.robotics.handyboard)
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| | HANDY BD EXPANSION
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hi, I have gone thru the Handy board expansion schmetic circuit version 3.0 by Mr.Fred Martin whcih updated on the June 14,1998. I have some doubts : 1) What and where is the the Analog pass-through connector (J4) and Motor power pass-through (...) (26 years ago, 4-Aug-98, to lugnet.robotics.handyboard)
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| | FS: HandyBoard
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I have an extra HandyBoard that I assembled and tested. Never used in a project. Includes: Controller Board 2x16 line LCD Nicad Batteries RS-232 Interface/ Charger Board RS-232 Cable Cases for Charger and HB AC Adapter $225 If interested: Mike Davis (...) (26 years ago, 4-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Need Simple IC editor
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Mr. Carmack wrote: <snip> (...) While any text editor will suffice, I highly recommend one called TextPad. It has very powerful features and does an excellent job of formatting source code. It's available as shareware from www.download.com. (Note: (...) (26 years ago, 4-Aug-98, to lugnet.robotics.handyboard)
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| | Where and when to buy a HandyBoard?
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Hi all, I am considering purchasing a handyboard, but Definitly want to get the sensor expansion board when available. 1) Do I need to purchase a specific handyboard in order to get the I/O expansion board to work? 2) Is Gleason Research a good (...) (26 years ago, 4-Aug-98, to lugnet.robotics.handyboard)
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| | Handy board Expansion
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hi, I have gone thru the Handy board expansion schmetic circuit version 3.0 by Mr.Fred Martin whcih updated on the June 14,1998. I have some doubts : 1) What and where is the the Analog pass-through connector (J4) and Motor power pass-through (...) (26 years ago, 4-Aug-98, to lugnet.robotics.handyboard)
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| | Re: speed of the board
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anton, You might want to think about getting rid of all those square roots. Take a look at what you are really trying to do and decide if you need the square root. For example, if you are just compairing two distances to see which is greater, you (...) (26 years ago, 4-Aug-98, to lugnet.robotics.handyboard)
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| | Need Simple IC editor
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Howdy. Thanks to everybody who gave me advice when I wrote about some basic issues. Your responses included links to a C- compiler, a C tutorial, an electronics tutorial, and more! I managed to get my HB up and running and have begun tinkering (...) (26 years ago, 4-Aug-98, to lugnet.robotics.handyboard)
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| | Re: speed of the board
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the other issue that should be mentioned re: changing clock speed is that it messes up the baud rate of the serial communications. if you plan to use interactive C, would have re-assemble the pcode program with a different baud rate constant, to (...) (26 years ago, 4-Aug-98, to lugnet.robotics.handyboard)
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| | RE: speed of the board
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You shouldn't lose place if the mouse is serviced by input counters and interrupt routines, so whether 2 MHz is fast enough depends on how often you need the positions calculated from the mouse counters. You won't be able to get that as fast as the (...) (26 years ago, 4-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Polaroid trouble again
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(...) I haven't used the Polaroid module with my HB, but I have used them a lot with 68332 micro-processors. I does sound like you may have an electrical noise problem (not EMI, but noise conducted through the power bus). The only way I've got the (...) (26 years ago, 3-Aug-98, to lugnet.robotics.handyboard)
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| | speed of the board
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Hi guys, I am worried about the 2MHz clock speed of the HB. The robot that I am building has a mouse in the bottom of it and I am writing the program to read the number of digital pulses and calculate the position relative to the starting point. (...) (26 years ago, 3-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Polaroid trouble again
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You may be trying to draw more current that your external battery can handle. The HB Nicd battery can supply alot of current, both surge abd continuous. This may be why it works in this case. If your external battery is not NiCd, it might cause a (...) (26 years ago, 3-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Polaroid trouble again
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I had this same problem when I got mine a few weeks ago. I ended up putting a capacitor from pin 1 to pin 3 on U2 of the sonar driver board. I also had to take out the 1k resistor from the BINH. It kept BINH at 1 V instead of Zero and that seamed (...) (26 years ago, 3-Aug-98, to lugnet.robotics.handyboard)
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| | Polaroid trouble again
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Hi! I am having trouble with my Polaroid sonar: When I keep my HB hooked up to external power, I will only get correct readings up to 20 inches. As soon as I use battery power without hooking it up to external power, the readings are correct up to 6 (...) (26 years ago, 3-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Polaroid trouble again
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I have no experience with the sonar but having followed this mail list for a while ... Is it possible that you are triggering the sonar too frequently? Mike (...) (26 years ago, 3-Aug-98, to lugnet.robotics.handyboard)
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| | HandyBoard For Sale
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I have an extra one extra controller board that I assembled and tested. Never used in a project. Controller 2x16 line LCD Nicad Batteries RS-232 Interface/ Charger Board RS-232 Cable $225 If interested: Mike Davis ipscone@halcyon.com -- ---...--- (...) (26 years ago, 1-Aug-98, to lugnet.robotics.handyboard)
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| | Re: Digital out puts
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Please see the FAQ, specifically: (URL) the answer. Fred In your message you said: (...) (26 years ago, 31-Jul-98, to lugnet.robotics.handyboard)
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| | Digital out puts
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Hi guys, The handy board specification does not tell the number of digital outputs it has. I need at least four digital outputs from the board in order to make my robot function. Is there any way I can do this? Thanks, -anton (26 years ago, 31-Jul-98, to lugnet.robotics.handyboard)
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| | unsubscribe
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please unsubscribe me. I may be in as les@psi.bc.ca thanks (26 years ago, 31-Jul-98, to lugnet.robotics.handyboard)
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| | Re: power glitch
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Please see the FAQ: (URL) is a known issue, with a simple fix: make sure to bootstrap with the board with pcode_hb.s19. Fred In your message you said: (...) (26 years ago, 31-Jul-98, to lugnet.robotics.handyboard)
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| | Re: Update on the expansion board.
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Hi. The beta testers are still discovering issues, so I'm not ready to release the design just yet. I'm particularly waiting for results of multi-servo testing. But, it appears that the basic design is sound, and only minor rework (if any) will be (...) (26 years ago, 31-Jul-98, to lugnet.robotics.handyboard)
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| | power glitch
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I have just started useing my handy board and have had to deal with many power glitches. I don't know if this happens often, or if something is wrong. It seems to happen at any time, even when I have only turned the board on and done nothing else. (...) (26 years ago, 31-Jul-98, to lugnet.robotics.handyboard)
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| | Re: beginner
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"Handyboard for Dummys"... No, just kidding. Maybe not just yet. :) Check the HB HP for the "HB Technical Reference". You can download it. Gleason Electronics sells HB kits and Assembled HB's. They have a starter package. Get IC 3.2 from Newton (...) (26 years ago, 31-Jul-98, to lugnet.robotics.handyboard)
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| | ir reflectance sensors found !!!
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Howdy, When browsing through the catalog of CONRAD ELECTRONICS (www.conrad.de) I found an IR reflectance sensor with build in logic to measure distances between 10 and 80 cm. I requested the datasheets and they arrived today; I am gonna order (...) (26 years ago, 31-Jul-98, to lugnet.robotics.handyboard)
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