 | | Digital Micro Systems
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Dear Phet & fellow Handy Board users, I am the person responsible for Digital Micro Systems operations and accept full responsibilty for the delay in processing your order(s). As many of you know, Digital Micro Systems is a very small company, and (...) (27 years ago, 2-Jun-97, to lugnet.robotics.handyboard)
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| | I can obtain RPACKs
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I'm live in Argentina, and i can't get the RPACKS(sound incredible , or not???). I want to know how can replace this for resistances(is that posible???). Thanks for all!!!! ===...=== Obtenga su e-mail GRATUITO para toda la vida en: (URL) (27 years ago, 2-Jun-97, to lugnet.robotics.handyboard)
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| | Robotics contest program
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FIRST, THE GOOD NEWS ABOUT THE FIRE FIGHTING HOME ROBOT CONTEST. Since it's inception in 1992, the Fire Fighting Home Robot Contest has been a huge success. Each year increasing numbers of people from throughout the United States and Canada have (...) (27 years ago, 1-Jun-97, to lugnet.robotics.handyboard)
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| | buying HB from dmsc
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Has anyone ordered a handyboard kit from digital micro systems in the past week. I've made an order from their website and have yet to recieve any response about wether my order has been made. Are there any other sources for the handyboard kit? I (...) (27 years ago, 1-Jun-97, to lugnet.robotics.handyboard)
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| | number conversions
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Is there any way to convert from an integer to a floating point and vice versa in IC? Please someone tell me there is a way! Thanks. Keith Keith Soldavin kas219@email.psu.edu (URL) (27 years ago, 1-Jun-97, to lugnet.robotics.handyboard)
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| | Re: Has anyone built this homebrew sonar ranging board?
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(...) I have :) (...) What would you like to know about it? (...) Here are the essential pros and cons (note that I have NOT ever actually had a Polaroid to mess with so my comments are based on what I've read about it and other people's comments): (...) (27 years ago, 1-Jun-97, to lugnet.robotics.handyboard)
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| | problem starting IC
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Hello, Sorry to bother you all. I 've build a small version of the Rug Warrior board. I use a 68hc11A1 with 32K RAM at $8000 to $FFFF accoording to the book of "Jones and Flynn, Mobile robots Inspiration to Implementation". I tried to use IC ver. (...) (27 years ago, 31-May-97, to lugnet.robotics.handyboard)
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| | Polaroid 6500
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Hi all, Did anybody see my previous questions about polaroid 6500 ? (except for Will, thanks): (...) Can I use the motor(3,75) statement to create enough voltage ? I think my polaroid board is damaged, how can I know for sure ? How can I repair it ? (...) (27 years ago, 31-May-97, to lugnet.robotics.handyboard)
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| | Vector 2X Compass
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Well, I finally got my Vector2X compass module running this evening. Looks great- thanks Tom Brusehaver for your nice code- it works well! Ok- call me simple, but I'm tickled pink :) Its cool to watch it spit out the headings. Anyway, on a related (...) (27 years ago, 30-May-97, to lugnet.robotics.handyboard)
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| | Re: A few questions
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DVM or Oscilloscope: Most DVM will indicate the RMS or True RMS value of a sinewave with in the frequency range of the meter. Some functions to consider: Function DVM Oscilloscope Frequency Some via time for a period (or half period) RMS Sinewave (...) (27 years ago, 30-May-97, to lugnet.robotics.handyboard)
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| | Re: A few questions
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(...) I'm not personally familiar with that particular model, but I use a FLUKE with similar features. The frequency measuring is a nice addition. The inclusion of a bar graph in the LCD can be handy in looking at fluctuations. If I could have only (...) (27 years ago, 29-May-97, to lugnet.robotics.handyboard)
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| | A few questions
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Hi all, I'm about to build a few handyboards, and I have a few questions. 1. I don't have convenient access to an o'scope so I'm hoping to get by without one. I am in the market for a new DMM (my birthday's coming up :->), and I've located one that (...) (27 years ago, 29-May-97, to lugnet.robotics.handyboard)
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| | Re: Vector 2x giving me lots of trouble...
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F> Hi all, I am having lots of trouble with the vector 2x F> compass. Sometimes it seems to work fine. Other times it just F> ouputs zeros (like someone else was saying...). I checked all F> the physical wiring, and that seems to be fine. The (...) (27 years ago, 29-May-97, to lugnet.robotics.handyboard)
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| | Re: Polaroid 6500 sonar and HB...
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(...) Here are some starting points: Handy Board Software: Sonar Routines by Kent Farnsworth (URL) URL was clipped on my printout) Polaroid Sonar Interfacing to HC11 (URL) and Robotics Great background info once you get your sonar working (URL) A. (...) (27 years ago, 29-May-97, to lugnet.robotics.handyboard)
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| | Minor Correction to 'Makefile'
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Minor change to Makefile just posted- Change the '$' signs to '\$$' signs to get around interpretation as shell variables: --- begin Makefile --- # # Generic Interactive-C *.ICB Assembly Makefile # Brat Wizard - 06/28/97 # # General CAT = /bin/cat # (...) (27 years ago, 29-May-97, to lugnet.robotics.handyboard)
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| | Some (hopefully) useful information-
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Hi there- As I recently posted, I was having trouble figuring out how to assemble both *.icb files and the pcode itself. Well, thanks to a nice respondant (Max Davies- Thanks Max :) I finally got it all figured out. I made up a Unix style Makefile (...) (27 years ago, 29-May-97, to lugnet.robotics.handyboard)
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| | Vision for Robots
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I am thinking about interfacing a color CCD camera to the handyboard. BGmicro has some for $59, so I was thinking about how to experiment in this area Does anyone have any experiance on this, or know of any good web pages I could look up? I realize (...) (27 years ago, 29-May-97, to lugnet.robotics.handyboard)
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| | remove
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please remove me from the mailing list - thanks for your help (27 years ago, 28-May-97, to lugnet.robotics.handyboard)
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| | Re: Richard Drushel's improved serial and math libraries
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Fred G Martin spake unto the ether: (...) out, please let me know any bug reports, especially in the serial console input routines in conio.c (which have been tested with a serial port emulator library, but not with a real serial input). *Rich* -- (...) (27 years ago, 28-May-97, to lugnet.robotics.handyboard)
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| | Shaft encoder software
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I have downloaded the shaft encoder software drivers that are on the web page and I would like to say they work great. I need help in writing software to monitor wheel speed and keep my robot running in a strait line. The program has to run in the (...) (27 years ago, 28-May-97, to lugnet.robotics.handyboard)
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| | Re: OOPS!
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(...) In the little Assembler system that I use (which can be found at (URL) MAIN_START is defined in the commands in the .BAT file that run the preprocessor: echo off REM Two different as11 runs... REM zero page increases by 3 REM main high byte (...) (27 years ago, 27-May-97, to lugnet.robotics.handyboard)
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| | IC
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(...) Hi Bastiaan, We're working on an integrated .icb file generator for IC. Look for this in the next rev (free upgrade to those who have bought IC 3.1). As for "interpreting" C code -- actually, we do in fact compile C, but we compile it to a (...) (27 years ago, 27-May-97, to lugnet.robotics.handyboard)
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| | servo motors
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I was wondering how many RC servos can be easily controlled with the handy board. I have seen that people have sucessully used 2 at once, but have not seen any more than that. Is it possible or has no one ever had a need for it? It seems that to (...) (27 years ago, 27-May-97, to lugnet.robotics.handyboard)
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| | OOPS!
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I probably oughta mention that that "analog.asm"(17): symbol Undefined on pass 2 Error points to the ORG MAIN_START line in the code. Sorry for the omission. John (27 years ago, 27-May-97, to lugnet.robotics.handyboard)
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| | AS11 Question-
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Howdy- I've been trying to assemble various bits of assembly code- the Vector 2X compass code and some of the stuff from the handyboard libs directory to be specific- I am using the as11 version that was hacked up by Randy Sargeant. It seems to go (...) (27 years ago, 27-May-97, to lugnet.robotics.handyboard)
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| | I miss some nice features in IC 3.1...
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Hi, I'm considering to buy IC 3.1. But when I looked at it's features I fount two nice things to be missing: 1. A build in assembler to create the .icb files 2. An option to compile C code instead of interpreting it. (I saw this very nice feature in (...) (27 years ago, 27-May-97, to lugnet.robotics.handyboard)
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| | Re: Motors: Please help! Going out of my mind...
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(...) Of all the things in a Robot, motors are in some ways the most difficult to obtain. (...) Both Brevel and Globe make such motors, they typically go for anywhere been $175 each and $500 each. (...) [I'll assume that the above exceeds your (...) (27 years ago, 27-May-97, to lugnet.robotics.handyboard)
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| | Richard Drushel's improved serial and math libraries
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now on-line. See the HB HP ((2 URLs) for the delay. -Fred (27 years ago, 27-May-97, to lugnet.robotics.handyboard)
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| | IC 3.1
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Is it possible to receive a trial/shareware version of IC 3.1? I don't what to go through the expense of buying the full version unless I know it will do what I need it to do. Thanks in advance. -Brad (27 years ago, 27-May-97, to lugnet.robotics.handyboard)
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| | IC 3.1
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(...) Hi Joe, Removing drivers depends a bit on what OS you're actually running. Generally, you'd remove lines from your config.sys or autoexec.bat (on c:\) to remove various drivers, if there are some you don't actually need. Networking software on (...) (27 years ago, 27-May-97, to lugnet.robotics.handyboard)
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| | Out of memory error
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Randy, Thanks for your help so far, but I have a few questions. How can I remove drivers to get more room. Where can I quickly get a copy of IC 3.1? And how much does it cost? -Joe (...) (27 years ago, 27-May-97, to lugnet.robotics.handyboard)
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| | Memory problems
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I have been having big problems with the programs that I have been writing for my handy board. I currently have around 1400 lines. I expect to have about 2000 when I'm done. I have many functions called throughout the program and recently have (...) (27 years ago, 27-May-97, to lugnet.robotics.handyboard)
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| | Out of memory error
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(...) At some point, you may run out of memory on the Handyboard; however, it sounds like IC 2.8 is running out of the 640K DOS-limited memory. You might try removing drivers to get more room in the lower 640K. If you move up to IC 3.1, which is a (...) (27 years ago, 26-May-97, to lugnet.robotics.handyboard)
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| | Re: clueless programmer
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A very simple program which will exercise the motors in this configuration is listed. The first section will put a message on the LCD then wait until the sopt button is pressed. Once the stop button is sensed, it will turn on the motor in port 0. (...) (27 years ago, 26-May-97, to lugnet.robotics.handyboard)
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| | TEAC Stepper motor
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Has anyone had any experience driving the stepper motor from a TEAC 5 1/4 in floppy drive with the HB. I have been going through Jones' tutorial on stepper motos and have decided that the motor is a permanent magnet, 4 winding variable reluctance (...) (27 years ago, 26-May-97, to lugnet.robotics.handyboard)
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| | RE: IC 3.1
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also, joe... there are several programs you can run to get more conventional memory (640)... dos 6.0 to 6.22 comes with memmaker... run this a couple times, toy with the settings a bit to see what you can pull off... one of the settings may cause (...) (27 years ago, 26-May-97, to lugnet.robotics.handyboard)
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| | Motors: Please help! Going out of my mind...
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Please somebody help! Actually it's not quite that bad, but I've been searching and hunting trying to find some motors to use for a new robot base. Does anyone have any suggestions for where to find motors with gearboxes that can carry a few pounds (...) (27 years ago, 25-May-97, to lugnet.robotics.handyboard)
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| | clueless programmer
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Ihave only been working with my HB for a few weeks but the coding appears pretty easy. I'll be happy to help/teach you C. Which ports are the motors and touch sensor connected to. (...) (URL) (...) else for that matter. (...) Tutebot from (...) (...) (27 years ago, 24-May-97, to lugnet.robotics.handyboard)
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| | futaba compatible servos
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hi... i'm coreyfro, (hi coreyfro) and i'm totally new to this... i'm a junior-programer/ele...-addept(or addict)/new-toy-junky i was drawn here via the lego aspect, but that is not my cocern now... i have buckets of radio controlled car junk at my (...) (27 years ago, 24-May-97, to lugnet.robotics.handyboard)
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| | clueless programmer
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First time I have wrote to the list hope it goes well... To be honest I don't have a clue on how to program in 'C' or any thing else for that matter. But I'm slowly learning. I want to write a program similar to that of the Tutebot from the "Mobile (...) (27 years ago, 23-May-97, to lugnet.robotics.handyboard)
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| | Nitintol wire
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I am in need of a small amount (5inches) of that wire that changes shape when applied heat. (200F). Anyone know where I can get a small quanity very fast. thanks (27 years ago, 23-May-97, to lugnet.robotics.handyboard)
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| | RE: weird headers
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(...) Thanks, I stuck a pot in it's place and fiddled with it until I got 4.49k and it worked great. I came up with the 4.49k by taking 1/x*.0068 = 32.75. Where .0068 is the cap, and 32.75 was my desired frequency. So x was determined to be 4.49 (...) (27 years ago, 23-May-97, to lugnet.robotics.handyboard)
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| | Re: IR
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Hi Fred, I do not know exactly of your situation with the IR detector/emitter arrangement. I found that it sometimes picks up noise occassionally. I also found that with small resister in the range that you are using (330ohms), the range is too much (...) (27 years ago, 23-May-97, to lugnet.robotics.handyboard)
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| | price
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I also would like to ask you guys where the best place to purchase a handy board is. How much money do you save if you build it yourself as opposed to buying a pre-assembled board? Being a college student, money is an issue. The few places on the (...) (27 years ago, 23-May-97, to lugnet.robotics.handyboard)
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| | Re: weird headers
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Disregard my previous email :) (27 years ago, 22-May-97, to lugnet.robotics.handyboard)
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| | Re: weird headers
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(...) oh. sorry John! (...) yes. Change R4. Put a pot there if you like. (smaller resistance -> higher frequency) -Fred (27 years ago, 22-May-97, to lugnet.robotics.handyboard)
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| | weird headers
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That particular weird header is originated by John Whitten, aka root@snotnose.wizard.org, not my mail list program. All my mail list program does is forward along any mail sent to "handyboard@media.mit.edu" to each person on the distribution list. (...) (27 years ago, 22-May-97, to lugnet.robotics.handyboard)
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| | Re: IR
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Fred, could you please reconfigure your mailer? I'm getting some very strange headers, and it upsets Eudora Pro's filtering. Here's what you're sending it to: To: "'Handyboard'" <IMCEAX400-c=US+3Ba=...MTP=handyb oard+40media+2Emit+2...vetel.com> (...) (27 years ago, 22-May-97, to lugnet.robotics.handyboard)
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| | Cost of HandyBoard???
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(...) I was wondering if someone could tell me how much it would cost if I were to build a HandyBoard from scratch. The cost would include that of etching the pcb at home, all parts, interface cables, batteries etc... Thanx (27 years ago, 22-May-97, to lugnet.robotics.handyboard)
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| | RE: IR
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Brett, Since I'm going through a couple of corporate LANs and WANs, it would be no easy task to reconfigure my mailer. Perhaps you could tell Eudora to filter your messages if the To: field *contains* the word handyboard, rather than the whole (...) (27 years ago, 22-May-97, to lugnet.robotics.handyboard)
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| | Re: IR
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(...) I am not there with you obviously so I cannot see your exact situation but when I was first playing around with the IR detectors (same kind, 38KHz from radio shack) I had the same problem. I finally tracked it down to my IR clock being way off (...) (27 years ago, 22-May-97, to lugnet.robotics.handyboard)
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| | IR
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Hello all, I've been playing with IR proximity sensors, and wonder if anyone can provide some suggestions. I hooked up an IR LED (Radio Shack 'high output IR LED') to the Handyboard's IR output with a 330ohm resistor in series (the smallest value (...) (27 years ago, 22-May-97, to lugnet.robotics.handyboard)
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| | Re: Digital Micro Systems
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Hi Joseph, No, I have never had any problems with Digital Micro Systems. Actually, I am pleased with them. I ordered an assembled board a few months back and got the board on time. Later on I was suspecting something wrong with the board and I had (...) (27 years ago, 21-May-97, to lugnet.robotics.handyboard)
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| | Well, It works! :)
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Howdy all, They say imitation is the sincerest form of flattery- Thank you Fred Martin for designing such a cool board like the Handyboard! I got one last summer hopefully to be one of the CPU's in my robot- but alas it didn't have enough I/O ports (...) (27 years ago, 21-May-97, to lugnet.robotics.handyboard)
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| | Re: Digital Micro Systems
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I have had a bunch of problems with them too while trying to get some replacement parts from a kit they sold me...... I have e-mailed and called and yet never given a response........ (27 years ago, 21-May-97, to lugnet.robotics.handyboard)
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| | Re: Compiler errors.
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I really don't know what the problem with your compiler is. Maybe it's the wrong one for your programming language or for the board you're using. In the version of IC I program with, the program would look more like the following. Maybe that can (...) (27 years ago, 21-May-97, to lugnet.robotics.handyboard)
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| | purchasing IC 3.1?
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Is there anywhere I can purchase IC 3.1 via check? I'm not the (un)lucky owner of a credit card, and paying by check would make things a lot easier for me... ---...--- Jeff Keyzer UCSD EE Major jkeyzer@ucsd.edu (URL) (27 years ago, 21-May-97, to lugnet.robotics.handyboard)
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| | Compiler errors.
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I am still getting a strange compiler error and I can't figure it out. The exact error is: Compiler error! 62 extra bytes left on board stack Sometimes the number of bytes is more and sometimes less. I'm sending along a copy of the code that is (...) (27 years ago, 21-May-97, to lugnet.robotics.handyboard)
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| | Re: IR signal
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Sounds to me like your LED is just not focused straight ahead. I found that sticking the IR LED in a Radio Shack panel mount LED holder (cat no 276-080a) worked the best for focusing the beam of IR. I had tried soda straws and other things, but the (...) (27 years ago, 21-May-97, to lugnet.robotics.handyboard)
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| | Re: buying Chips
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(...) I just ordered two 68HC11A1FN's today from B.G.Micro for $6.95 each. 62256 32x8 static ram's for $2.99 each. www.b.g.micro.com Terry Gathright 669@worldnet.att.net (27 years ago, 20-May-97, to lugnet.robotics.handyboard)
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| | 6500 Sonar and HandyBoard
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Kent, I read your quick explaination of how to connect the Polaroid 6500 sonar board to the HandyBoard, and I have a couple of questions.... Mainly, you mention that the INIT signal plugs into pin 9 of the second motor driver chip socket, and that (...) (27 years ago, 20-May-97, to lugnet.robotics.handyboard)
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| | Re: Soldering...
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This is my case to. I had never soldered before, but it went off with out a problem. Thanks Fred!!!!! GO FOR IT and GOOD LUCK (...) (27 years ago, 20-May-97, to lugnet.robotics.handyboard)
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| | Re: Has anyone built this homebrew sonar ranging board?
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Polaroid OEM Components Group (617)386-3965 $99 for two sets ---...--- ericson mar Master of Engineering Candidate Project: Mobile Robotics mar@cooper.edu (212)353-4356 Department of Mechanical Engineering The Cooper Union for the Advancement of (...) (27 years ago, 20-May-97, to lugnet.robotics.handyboard)
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| | Re: Digital Micro Systems
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Everybody, DMSC is run by a nice guy named Prabal Dutta who posts frequently to this list and who isn't evil and as far as I can tell isn't over his head like some "vendors" in the robotics community have been. If you can send email, then sending (...) (27 years ago, 20-May-97, to lugnet.robotics.handyboard)
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| | Re: Digital Micro Systems
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Agreed, its a poor way to do business, 'specially for a small business man, I will not place an order with them again. My students, who need these boards to complete senior design projects and graduate are not happy. - Joe C. (...) (27 years ago, 20-May-97, to lugnet.robotics.handyboard)
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| | Has anyone built this homebrew sonar ranging board?
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(URL) a system similiar to the Polaroid 6500, but costs <$10 to build. Has anyone done it? Should I try it and share the results? (of course I should!) Does anyone see any major drawbacks after reading that, as compared to the Polaroid 6500? Is (...) (27 years ago, 20-May-97, to lugnet.robotics.handyboard)
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| | Re: Digital Micro Systems
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Joseph, (...) I have been trying for two weeks to get a hold of them. None of my messages (phone/email) are answered, and I am still waiting for the parts (high current H-bridges) to arrive. I suppose they still don't have them in stock, but it (...) (27 years ago, 20-May-97, to lugnet.robotics.handyboard)
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| | Digital Micro Systems
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I placed an order with Digital Micro Systems for two complete handyboard systems on 16-April-97. Delivery was promised by 5/12. It has not been received. Three phone calls to their answering machine (is this place ever open?) have remained (...) (27 years ago, 20-May-97, to lugnet.robotics.handyboard)
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| | Re: Generic 68HC11 board question-
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w/o the ds1233, the contents of the ram will become corrupted during power-up or power-down of the 6811. an r/c could protect during power-up, but wouldn't reset the 6811 during power down. remember it's still trying to execute code as system (...) (27 years ago, 20-May-97, to lugnet.robotics.handyboard)
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| | Soldering...
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(...) Mirco >System, since I'm a bit tight with money. However, I'm a bit hesitant >about assembling the kit because I have no experience at all with (...) like the HB before (I'm a software type guy), but thanks to Fred Martin's concise (...) (27 years ago, 20-May-97, to lugnet.robotics.handyboard)
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| | re: Digital Micro Systems
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(...) I called them up a couple of weeks ago to order complete boards, and they said they were backordered on the completed kits, but could send an unassembled kit. So I ordered a kit and it arrived in 3 days. It turned out that I had received a bad (...) (27 years ago, 20-May-97, to lugnet.robotics.handyboard)
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| | Generic 68HC11 board question-
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Howdy- I was wondering about the DS1233 EconoReset thingy- what would happen if it wasn't there and reset was just tied high or through a RC delay to high? Does the DS1233 just add to 'reset stability' or is it important to keep reset from going (...) (27 years ago, 20-May-97, to lugnet.robotics.handyboard)
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| | Re: buying Chips
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(...) Jameco's (www.jameco.com) May-June-July catalog lists them for 13.95 in quantities of 1-9. They're on page 13 but they are the wrong (Dual in Line) package so I'm not sure this helps. Bob. (...) Robert - Bob - Campanini 913/843-6412 2706 (...) (27 years ago, 20-May-97, to lugnet.robotics.handyboard)
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| | buying Chips
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Anyone know where to get a hold of one 6811 microprocessor for around $10? Everything I've seen sofar either wants you to buy in bulk (you have to buy 23 @ $7.11 from Motorolla) or almost $20 for 1 chip. This stinks! Any info would be appreciated. (...) (27 years ago, 19-May-97, to lugnet.robotics.handyboard)
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| | Re: Handy Board Problem: getting hb back into download mode
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(...) Are you holding down the STOP button? With the board powered on, read the voltage at pin 3 of the 6811. When pressing the STOP button, pin 3 should read between zero volts and 0.6v. Releasing the STOP button, you should get 5v. If you get 5v (...) (27 years ago, 19-May-97, to lugnet.robotics.handyboard)
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| | HOW TO UNSUBSCRIBE
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Greetings, This is the periodic message about unsubscribing. Please DO NOT send unsubscribe messages to the whole list. To unsubscribe, send email to fredm@media.mit.edu. Regards, Fred (27 years ago, 19-May-97, to lugnet.robotics.handyboard)
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| | Re: Handy Board Problem: getting hb back into download mode
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Hello, I'm at a loss for what will take to get either of the two boards into DL mode. The board has nothing plugged into it; the BATT and PWR LEDs flash on and then PWR remains on so I can not confirm the synptoms of the ds1233(U12) voltage monitor (...) (27 years ago, 19-May-97, to lugnet.robotics.handyboard)
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| | Unsubscribe
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unsubscribe Have compassion on those who live on earth and He who is in heaven will have compassion on you. God will show no compassion to him who has no compassion towards all mankind Prophet Muhammad (P.B.U.H.) (27 years ago, 19-May-97, to lugnet.robotics.handyboard)
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| | Re: your mail
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(...) Get your soldering iron, some solder labeled electronics use, some old circuit board, and solder away. Or, you could take an old computer board and desolder some components from it, and re-solder them in. Just get in there and do it. You know (...) (27 years ago, 19-May-97, to lugnet.robotics.handyboard)
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| | Re: Vector 2x compass
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A mistake has been found on the V2X schematic, the M/S pin on the compass needs to be grounded. I don't know what it is, everytime I publish something, I make a mistake. (27 years ago, 19-May-97, to lugnet.robotics.handyboard)
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| | Strange HB problems
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Over the past two days I have had two problems with my HB that I can't explain. Maybe you you can help. 1. I wrote a simple program to test out my motors that consists of the motor, sleep, and beep commands. Once in a while I get an error back while (...) (27 years ago, 19-May-97, to lugnet.robotics.handyboard)
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| | (no subject)
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Another note on soldering.. Heat control is VERY important.. Not so much being able to adjust the heat, as having a temperature-controlled iron. The "cheaper" irons get hotter or colder with the load (speed of soldering) as well as the room (...) (27 years ago, 19-May-97, to lugnet.robotics.handyboard)
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| | Re: Soldering (fwd)
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Often novices miss the single most fundamental point about soldering: you don't use the iron to melt the solder (99% of the time) -- you heat the component leads and let them melt the solder. To initially transfer heat effectively to the leads, a (...) (27 years ago, 18-May-97, to lugnet.robotics.handyboard)
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| | Re: Soldering
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(...) experience >at all with soldering. (...) become more >adept at this sort of stuff. And what type of solder should I use? Shane is right, you'll find using very thin solder works much better. Along with a fine tip, you'll want to use a low (...) (27 years ago, 18-May-97, to lugnet.robotics.handyboard)
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| | Soldering/ Second processor
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->Hi, I'm planning to purchase the handyboard as a kit from Digital Mirco System, since I'm a bit tight with money. However, I'm a bit hesitant (...) soldering. The trick is to use THIN 60/40 solder with flux core. Around 0.71 mm thickness is good. (...) (27 years ago, 17-May-97, to lugnet.robotics.handyboard)
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| | Re: Vector 2x giving me lots of trouble...
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Well, I seemed to have narrowed down the problem I was having with the Vector2x compass. It was functioning fine... All I had to do was write clean code that called comp_disable(1) at the end. When my code wasn't doing that, the compass IRQ routines (...) (27 years ago, 17-May-97, to lugnet.robotics.handyboard)
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| | '97 Intel ISEF
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This last week was the 1997 Intel International Science and Engineering Fair (ISEF), held in Louisville, Kentucky. While I don't have a list of winners/losers, I do have some things to say about it. There were five robots in the engineering (...) (27 years ago, 17-May-97, to lugnet.robotics.handyboard)
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| | (no subject)
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Hi, I'm planning to purchase the handyboard as a kit from Digital Mirco System, since I'm a bit tight with money. However, I'm a bit hesitant about assembling the kit because I have no experience at all with soldering. Can anyone recommend something (...) (27 years ago, 17-May-97, to lugnet.robotics.handyboard)
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| | Re: Polaroid software driver
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---...--- ericson mar Master of Engineering Candidate Project: Mobile Robotics mar@cooper.edu (212)353-4356 Department of Mechanical Engineering The Cooper Union for the Advancement of Science and Art ---...--- (...) (27 years ago, 16-May-97, to lugnet.robotics.handyboard)
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| | Vector 2x giving me lots of trouble...
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Hi all, I am having lots of trouble with the vector 2x compass. Sometimes it seems to work fine. Other times it just ouputs zeros (like someone else was saying...). I checked all the physical wiring, and that seems to be fine. The strange thing is (...) (27 years ago, 16-May-97, to lugnet.robotics.handyboard)
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| | Polaroid 6500 sonar and HB...
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Can anyone tell me where I might find instructions for connecting the Polaroid 6500 sonar with the Handyboard? Thanks for any help... -=Fred Cass=- (27 years ago, 16-May-97, to lugnet.robotics.handyboard)
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| | Re: Vector2X compass accuracy?
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The data sheet for the Vector 2x is located at: (URL) have used their TCM2 electronic compass module. I was very please with it's performance and reliability. Vinny Gracchi ---...--- (...) (27 years ago, 15-May-97, to lugnet.robotics.handyboard)
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| | Re: Reading floating point numbers
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Sure Rich, why don't we share your code now. If you want to zip up your files and mail them to me, i'll put them on the HB web site. -Fred (...) c (...) " (...) (27 years ago, 15-May-97, to lugnet.robotics.handyboard)
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| | Re: Reading floating point numbers
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Baggerman, Clinton D. spake unto the ether: (...) Clint, I already have the converse of this problem (i.e., printing floats (and ints) to a remote console via serial_putchar()) solved. I'm currently working with Fred Martin to make these routines (...) (27 years ago, 15-May-97, to lugnet.robotics.handyboard)
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| | Reading floating point numbers
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My problem is that I need to read in a floating point number through the serial port. I tried using the serial_getchar function to read in the number as an int, then convert it to a float, but that was unsuccessful. I also tried altering the (...) (27 years ago, 15-May-97, to lugnet.robotics.handyboard)
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| | Vector2X compass accuracy?
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Could anyone tell me what type type of accuracy/precision you get from the vector2x compass? Does it just return n,s,e,w,nw,ne,se,sw, or a byte? Is there a datasheet somewhere on the web? Thanks for the info! -=Fred Cass=- (27 years ago, 15-May-97, to lugnet.robotics.handyboard)
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| | Re: PCB for Handy Board
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(...) I have ordered the Handy Board from Douglas Electronics. Here is more information 1. Up to date prices for Handy board (most recent version,exclusief shipping) main board : $ 16.00 serial and battery charger : $ 8.00 2. Address : Douglas (...) (27 years ago, 14-May-97, to lugnet.robotics.handyboard)
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| | Trinity Robot Contest.
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Nice pictures. Thanks for sharing them, Fred. Next time maybe someone can put up some mpegs. :) I noticed some things that sparked my curiosity. First, what are those red boxes that quite a few contestants were using...for what appeared to be (...) (27 years ago, 14-May-97, to lugnet.robotics.handyboard)
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| | Penn State
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Bob Avanzato wrote: >I am happy to report that Penn State Abington teams placed 1st, 3rd, and 5th. Bob, Congratulations to you and your team. Well done! I lament there was nothing like this in my school days, but it's nevertheless great to have it (...) (27 years ago, 14-May-97, to lugnet.robotics.handyboard)
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| | Re: Vector 2x compass
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(...) J> I'm still having problems with the Vector 2x compass. I tried J> resetting the compass as Tom Brusehaver instructed and I spent J> some time going over the schematic. It still doesn't work and I J> don't see any obvious problems. I will (...) (27 years ago, 14-May-97, to lugnet.robotics.handyboard)
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