 | | Re: navigation alorithm
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Michael, A few sophomore engineering students here at Penn State Abington have built a micromouse from LEGO and a Handy Board. It has been entered into 2 micromouse contests sponsored by the Phila Chapter of the IEEE. It was quite challenging both (...) (26 years ago, 26-Jan-99, to lugnet.robotics.handyboard)
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| | ** voltage dropping and current limitting**
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Hello out there, I have a 24 vdc supply, how can I drop the voltage to about 13 or 14 volts? Would I use resistors across the supply? Or what??? Thanks in advance. -Michael (26 years ago, 26-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Expansion Board Files
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Fred; Here is the copy of expsens,c---...--- At the lines in the hb was having problems with there was a small square figure at the starting point outside the comment*\ and\* for some reason. Any one else having a problem????? Thanks Terry ---...--- (...) (26 years ago, 26-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Speech Synthesis?
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A few years ago, "back in the day..." (that is, high school), I did a project that involved creating various vowel sounds as output for some bumper sensors -- different resistances gave different vowels, that kind of thing. The parts came from a (...) (26 years ago, 26-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Sharp GP2D05
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(...) Me too... I have just brought 4 of these, and I'm not sure how to connect them etc... there is an interface diagram in the little book I have... got it from www.acroname.com tone (26 years ago, 26-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Speech Synthesis?
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I just finished an add on for my robot that involves just that. Radio shack used to sell the SPO256 speech syntetizer IC along with another companion chip called the text to speech processor CTS256-AL. To put it simply you send it a string of (...) (26 years ago, 26-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Speech Synthesis?
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Yes, I hooked an SPO256 + CTS244 text to speech chip to a software UART. However, I don't reccomend this solution. If there are a small number of things you need the board to say, buy one of the ISD digital recorder chips (JameCo, JDR sell them as (...) (26 years ago, 26-Jan-99, to lugnet.robotics.handyboard)
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| | Speech Synthesis?
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Is there anyway to use the I/O of the handy board to control a speech sythesis chip. I want to build a speech add-on to give general feedback like "hello", "obstacle detected" and other such things has any body tried and succeded? ___...___ Steve (...) (26 years ago, 26-Jan-99, to lugnet.robotics.handyboard)
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| | navigation alorithm
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hi everyone, i just want to try my luck here. is there anyone out there has done a mircomouse navigation in a maze before? i would like to have some pointers on that. pls reply if there is a hope for me. thank u regards, michael (26 years ago, 26-Jan-99, to lugnet.robotics.handyboard)
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| | Downloading
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Fred- I'm the one with the HB that always worked with System 7 Mac 11si-now decommisioned. On my OS 8.1 Mac 6500 with Appletalk turned off, useing printer port-I used to be able to use IC253 cosole if the P-code was already Downloaded elsewhere. (...) (26 years ago, 26-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Expansion Board Files
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terry -- please send an attached copy of expsens.c. there's got to be a bogus character in there. did anyone else have problems? fred In your message you said: (...) (26 years ago, 26-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Expansion Board Files
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Still unable to load the expansion board files. lib_hb.lis is in the libs. How do I do ic _config in windows? do I need to? System will run fine until I try to load the expansion board files. I downloaded hbexplib.zip,unziped,put all expansion-libs (...) (26 years ago, 26-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Serial LCD on PA4?
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I have modified the code to use the TOC3 output instead of the PA7. If interested I'll send you the code. (...) (26 years ago, 26-Jan-99, to lugnet.robotics.handyboard)
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| | a chip question
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in the business that im at (ok a tv station) sometimes we find chips (left in boxes and such) that we have absolutely no idea what they are for, recently i found a chip "N82S100N K84" I suspect its from Signetics which i am told has merged with (...) (26 years ago, 26-Jan-99, to lugnet.robotics.handyboard)
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| | Native 68hc11 C compilers
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Is anyone using a compiler other than Interactive C? I like IC but want to get a bit closer to the metal. Being able to use a source level debugger would also be good. I've tried the Introl C compiler demo, and the it looks really good, but it seems (...) (26 years ago, 25-Jan-99, to lugnet.robotics.handyboard)
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| | HB download
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Hi Everyone: My handy boards were working fine all this time but suddenly they seem to have developed a problem. The boards do not show the interactive C welcome message. I tried downloading the pcode file a number of times. That file downloads (...) (26 years ago, 25-Jan-99, to lugnet.robotics.handyboard)
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| | RE: mini HD
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Its a 50mm square HD about 20 grams. cap. 170 - 340 MB. Uses CompactFlash type II interface. Low power 3.3V. here a another link (URL) can get the spec's for CF @ (URL) not too adept of a programmer, but I bet the little HD can be converted to a (...) (26 years ago, 25-Jan-99, to lugnet.robotics.handyboard)
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| | Re: off topic but cool - ?????
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So what is it?? (other than a small hdisk, I gathered that much.. :) all I got was a 'page not found' error when I tried the link? John -----Original Message----- From: Olson, Shan (PBMS-SOlson) <solson@pacbell.mobile.com> To: (...) (26 years ago, 25-Jan-99, to lugnet.robotics.handyboard)
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| | RE: off topic but cool
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Hey, these are way cool. Excellent for a mobile application. -Shan O (...) (26 years ago, 25-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Expansion Board Files
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take the files out of the expansion-libs directory, and put them in the libs directory. over-write any previous files by the same name. make sure IC is configured to load lib_hb.lis on boot. that should be it... not sure where you're getting hung (...) (26 years ago, 25-Jan-99, to lugnet.robotics.handyboard)
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| | Expansion Board Files
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I have not got my expansion board files to load! what am I not doing correctly? Help !! I have deleted all my ic files, reloaded 3.2 from Newton Labs in c\ic. In ic I have : expansion-libs libs ic.help ic.ini ic.win.exe install.log I can load ic but (...) (26 years ago, 25-Jan-99, to lugnet.robotics.handyboard)
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| | Serial LCD on PA4?
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I am trying to send serial data to a 2-Line LCD which is connected to Scott Edwards' 9600baud backpack. I have PA4 available. I came across Fred Martin's 'Pa7_9600' serial files which included Pa7_9600.asm and Pa7_9600.icb and am wondering if they (...) (26 years ago, 25-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Analog Ports
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yes, it's the 47K pullup that's causing the IR's to not work. slice through the trace connecting the 47K to the sensor input pin on the underside of the printed circuit board. fred In your message you said: (...) (26 years ago, 24-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Interactive C-OS8 Downloading Problems
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cappy, did you use my new "6811 Downloader MCL" version? this has been tested on a variety of Macs running system 8.5 and 8.1. please download it from (URL) me know if this works to download from your 6500. have you ever used the serial port on this (...) (26 years ago, 24-Jan-99, to lugnet.robotics.handyboard)
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| | Analog Ports
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I have the MTJPRO11 board by Mekatronix as well as the MIT HandyBoard both use the 68HC11A1FN mcu. I am using hacked Sharp GP1U58 'tin can' detectors so that they output analog voltage from 1.5 to 2.5 ( effective proximity range is approximately 4" (...) (26 years ago, 24-Jan-99, to lugnet.robotics.handyboard)
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| | Interactive C-OS8 Downloading Problems
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I have nearly teared my hair out trying to get my HB to to DL on a my OS8 6500 Mac. I though there might be someting wrong with the HB and replaced 5 chips. Today I took my HB over to a friends house who has a Performa 475 and hand had no problems. (...) (26 years ago, 24-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Wirz LMD18200
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I'm not familiar with the Wirz board, however the board I built used the regular "motor output" of the handyboard with no modification required. The trick was to use an opto-isolator to "recover" the forward and backward logic states. That was done (...) (26 years ago, 24-Jan-99, to lugnet.robotics.handyboard)
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| | Re: batteries port
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(...) That sounds like too much voltage for the HB. I think I remember reading that the HB runs on up to 12 V max. Check the Handy Board Technical Reference. There are much better ways to run motors that require higher voltages. Try using a separate (...) (26 years ago, 24-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Stack Overflow
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(...) If your code looks something like this... if (i == 1) do001(); else if (i == 2) do002(); else if (i == 3) do003(); else . . . if (i == 100) do100(); ...then try changing it to this: /* Not really a loop, just so we can break */ for (;;) { if (...) (26 years ago, 24-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Wirz LMD18200
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I just checked it. It is www.wirz.com Happy shoping Pherd (26 years ago, 24-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Stack Overflow
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IC is implemented using lex and yacc (tools originally on unix systems for building parsers and compilers, which generate C code that be compiled into apps on many platforms). as someone pointed out, if yacc barfs, it's because you've got an (...) (26 years ago, 24-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Stack Overflow
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(...) code: please send it to me privately and I'll see what I can do. PS: What kind of hardware/software platform are you on? "Yacc" is typically a Unix program that I thought had nothing to do with IC. (And yes, the real Unix "yacc" can stack (...) (26 years ago, 24-Jan-99, to lugnet.robotics.handyboard)
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| | Memory Map with Expansion board
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Hi Folks, I was just reading the FAQ and encountered the part about the memory map. Does anyone know how the expansion board maps as it is not included in the memory map in the FAQ? Thanks, Chris Prosser (26 years ago, 23-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Stack Overflow
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Hi there, In my humble opinion, I suspect that the problem is with Interactive C.. Try a newer or older version. What version are you using, by the way ? To quote Levine et al, "lex & yacc", 2nd Ed, O'Rielly & Assoc page 259: "yacc stack overflow (...) (26 years ago, 23-Jan-99, to lugnet.robotics.handyboard)
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| | batteries port
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dear readers, i am current using power supply of around 15 to 20 volts to supply to my HB. i remove the 9.6 batteries supply cause it does not have the strength to drive my 30 v dc motor. will it affect the board? jass (26 years ago, 23-Jan-99, to lugnet.robotics.handyboard)
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| | Stack Overflow
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Hi everyone: I'm trying to download a rather large chunk of code to the HandyBoard, and I'm having a problem when I exceed a certain number of instructions in a procedure I'm running. When I try to download the code, I get the error "yacc stack (...) (26 years ago, 23-Jan-99, to lugnet.robotics.handyboard)
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| | Re: senor signal line back to HD
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(...) The sensor should be grounded to the HB. (...) Oh yes. Quite a few messages this past week suggest how to avoid frying your sensor ports with excessive voltage. -- Will , , __@_/ \_@__ |/ | /__, o @_/ )\ ) ( \ (\/\\, ~~~...~~~ ' ` ~~~...~~~ ` (...) (26 years ago, 23-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Ultrasonic sensor
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(...) Firstly, it looks like the sensor board can be powered from the HB using the motor power header (J13). This is good, because the two should share a common ground. Based on the schematic and the web page description, it looks like this type of (...) (26 years ago, 23-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Toy motors
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sorry, send my msg before it was done. right, this is a good answer. you buy a device called an "electronic speed controller". this connects like a servo to the HB and has outputs to drive high current DC motors. you also connect a separate power (...) (26 years ago, 23-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Toy motors
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right, this is a good answer. you buy a device called an "electronic speed controller". this connects like a servo to the HB (3 wire connection) and has outputs to drive high current DC motors. you also connect a separate power supply to the device. (...) (26 years ago, 23-Jan-99, to lugnet.robotics.handyboard)
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| | CONTINUOUS BEEPING
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Dear Fred Martin/friends, We have put a total of 6 chips on the handy board-the 6811 ,two chips placed side by side to the left of the 6811, the fat chip on the upper side of the 6811, two ICs(chips) one on each side of the fat chip.(component side) (...) (26 years ago, 23-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Toy motors
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I tried to use the special RC motor drivers for RC race cars with good luck, they simply connect to a servo output of the handy board and they work great and you can get them in a thousand different configurations like fwd/rev and brakes. They work (...) (26 years ago, 23-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Toy motors
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I was reading the FAQ (again), and unless I overlooked something, it seems that even with the H-bridge or piggybacking solutions, I would not be able to drive a high-end R/C car engine (20+ amps)... So here are my questions: 1 - Could I lower the (...) (26 years ago, 22-Jan-99, to lugnet.robotics.handyboard)
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| | Re: CONTINUOUS BEEPING
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I would suspect that the system locks up without the LCD. There is a PCODE out there for use without the LCD panel, and I believe that it is at the handyboard web site. K.L. McKinnon (...) (26 years ago, 22-Jan-99, to lugnet.robotics.handyboard)
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| | ULTRASONIC SENSOR
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I have bought a Ultrasonic Sensor (with Board) 2 month ago. Now, to christmas, I got this COOL Handy Board, but I want to use this Board with HB on one of these Analog Ports, but HOW??? I have measured 2 days long (OK, I DO NOT KNOW MUCH ABOUT (...) (26 years ago, 22-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Toy motors
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(...) Sure, just hack your HB to use an external battery for the motors. The external battery can be whatever voltage the motors prefer (within reason). If the motors still draw too much current, try piggybacking another set of motor driver chips on (...) (26 years ago, 22-Jan-99, to lugnet.robotics.handyboard)
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| | Out of TIC Inputs
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Hi everyone. I'm running the HB 1.2 with the expansion board. I've installed the 6500 ranging system and use servo ports 1 through 3. I now have two wheel encoders functioning and desire to use the IC encoder routines. My problem is that I've got (...) (26 years ago, 22-Jan-99, to lugnet.robotics.handyboard)
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| | 6.270 vs. Handy Board motor stuff
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[Max Davis] spake unto the ether: (...) Too much current (and voltage) for those original Polaroid motors, which are 6-volt. (...) I heat-sink mine with the clip-on variety; it helps. (...) I have done the 6.270 piggyback hack with the motor driver (...) (26 years ago, 22-Jan-99, to lugnet.robotics.handyboard)
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| | senor signal line back to HD
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Hi, Currently, I'm using a infra-sensor with supply by 12v external source battery.The signal line wire is plug directly into the HD digital or analog port. The positive and negative supply of this infra-sensor is connected to the external supply (...) (26 years ago, 22-Jan-99, to lugnet.robotics.handyboard)
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| | Re: POWER GLITCH
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(...) Please see the FAQ, specifically: (URL) I am also looking for a servro motor, any (...) Please see the "Get One" pages, specifically: (URL) (26 years ago, 22-Jan-99, to lugnet.robotics.handyboard)
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| | (no subject)
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Hello, folks. My first foray back onto the list in a few years. I checked the archives and didn't see an answer to this question, so here goes: Until recently, I taught a freshmen robotics seminar using old 6.270 boards, motors, and parts bought (...) (26 years ago, 21-Jan-99, to lugnet.robotics.handyboard)
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| | HELP
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Dear Friends, Our handy board has developed some problem again.We have put the 6811 and the RAM chips on the handy board till now. If we download pcode it downloads it well.On reset beeping does not occur and IC does not run.What do you think the (...) (26 years ago, 21-Jan-99, to lugnet.robotics.handyboard)
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| | Toy motors
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I understand that you can't use normal toy motors I just have two questions: 1. Can you construct circuitry to limit current and voltage draw to operate these. 2. Can you purchase 9v motors in the same physical diamensions as normal toy motors? I (...) (26 years ago, 21-Jan-99, to lugnet.robotics.handyboard)
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| | POWER GLITCH
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Hi There. When ever I am runing any motor , the message "Power glitch" apears on the LCD. what is the pb? I am also looking for a servro motor, any suppliers?. Thanks. (26 years ago, 21-Jan-99, to lugnet.robotics.handyboard)
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| | MIT 6.270 LEGO Robot Design Competition, Wednesday January 27
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Hi everyone, Announcing this year's MIT LEGO Robot Design Competition! As always, the contest is open to the general public at no charge, with seating available on a first-come, first-serve basis. This year's contest is called "Raiders of the Lost (...) (26 years ago, 21-Jan-99, to lugnet.robotics.handyboard)
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| | Re: HELP
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the 74hc04 gate might be blown. try another. fred In your message you said: (...) (26 years ago, 21-Jan-99, to lugnet.robotics.handyboard)
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| | Re: New comer to HB mailing list
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Han , I think you have a slight misunderstanding of the command fd(motor). This command means START running the motors, not continue running the motors. When you hit the switch you need off(motor). So: void main (void) { fd (0); fd (1); printf("Hey, (...) (26 years ago, 21-Jan-99, to lugnet.robotics.handyboard)
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| | New comer to HB mailing list
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Hello, everyone! I just joined to Handy Board mailing list and sincerely hope to exchange useful information and experience to enhance our daily joy with Handy Board. I am considering a kind of intelligent self recharging system of my robot. When (...) (26 years ago, 21-Jan-99, to lugnet.robotics.handyboard)
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| | PVM output
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Dear all, I looked at the lib_hb file and found the portion for motor outputs. void motor(int m, int speed) { if (speed>100) speed=100; if (speed<-100) speed=-100; if (speed >= 0) _set_motor(m, 0, (255*speed)/100); else _set_motor(m, 1, (...) (26 years ago, 21-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Dual Coaxial power jacks?
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good beginner questions... (...) you can use either. if you use the one on the interface, then power goes through the phone cable to charge the HB. if you use the one on the HB, then power goes through the phone cable to operate the ckts on the (...) (26 years ago, 21-Jan-99, to lugnet.robotics.handyboard)
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| | Re: blowing analog inputs [was: Battery Level Indicator]
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(...) this isn't right, so i feel the need to correct you. the hc11's analog inputs are sensitive; i have seen many of them destroyed (on a pin-by-pin basis), and voltages above 5v or below 0v are the cause). more accurately, it's not the voltage (...) (26 years ago, 21-Jan-99, to lugnet.robotics.handyboard)
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| | ROVER
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Dear Mr Fred Martin/friends, We have run into some strange problems.Whenever we download the pcode_hb.s19 to the handy board using dl.exe we first get it is loading bootstrap program then the pcode.It shows the loading by a series of dots and (...) (26 years ago, 21-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Douglas Electronics Expansion Board
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We have revised the Handy Board Expansion Board Kit documentation to refer to the information on the Handy Board website. Tom Brusehaver is correct in his post that the J11 flex cable connector is not included in the kit as it is supplied with the (...) (26 years ago, 20-Jan-99, to lugnet.robotics.handyboard)
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| | off topic but cool
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I thought you might find this interesting ... a tiny one inch hard disk drive weighing 17 grams, capable of storing 340MB: (URL) (26 years ago, 20-Jan-99, to lugnet.robotics.handyboard)
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| | Dual Coaxial power jacks?
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I am new to the Handy board and Mine is in the starting phases of construction. I would like to ask the more experienced roboticist. 1. Why is there a power jack on both the Handy board and the charger? does the Interface need power? and if there is (...) (26 years ago, 20-Jan-99, to lugnet.robotics.handyboard)
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| | for sale
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Hi John, I am interested in your handyboard ! I'm curious, when you say your board only has one motor chip is that something you added on or does that mean it only has one of the four outputs for DC motors, that usually comes with the board. Or does (...) (26 years ago, 20-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Battery Level Indicator
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(...) When I first got my HC11EVB I ran 12V straight into the E port (one of the pins), and was sure I ruined the chip. I called the tech support person at motorola, and he said 12V on a A/D port should be no problem. Sure enough it all still (...) (26 years ago, 20-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Battery Level Indicator
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1. yes, you probably killed your analog 5. the analog inputs are very sensitive to over voltage. if your ran more than +5v directly into the input, you probably killed it. next time you're playing with funky voltages, put a 5K resistor in series (...) (26 years ago, 20-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Strange problem in IC V3.2 beta 1 (Handy Board 1.2)
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we never wrote the long division routine. sorry... it is stated in the IC documentation. fred In your message you said: (...) (26 years ago, 20-Jan-99, to lugnet.robotics.handyboard)
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| | Strange problem in IC V3.2 beta 1 (Handy Board 1.2)
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Hello, What is wrong here? Just type: IC> 100L/67L Illegal type given to /: <long> / <long> Why am I not allowed to divide two long numbers ? Rien (26 years ago, 20-Jan-99, to lugnet.robotics.handyboard)
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| | A fast light sensor?
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Ummm, Hi all I'm looking for a circuit that will interface a photo transistor or a photo diode to a digital input. I tried a photocell in an analog port but it's too slow, I want to use a *visible* light pulse as an accurate trigger: ie. input (...) (26 years ago, 20-Jan-99, to lugnet.robotics.handyboard)
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| | Battery Level Indicator
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I have been playing around with trying to make a battery indicator on my Handy Board. I did find the below diagram from a earlier posting in March of 98. BAT --------R1---...---*---...--- Analog5 Input +ve (10K) | (Active) R2 (4K7) | *---...--- Gnd (...) (26 years ago, 20-Jan-99, to lugnet.robotics.handyboard)
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| | Sharp GP2D05
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I would like to use the Sharp GP2D05 infrared detection module with HandyBoard. Any hints/suggestions/clues will be highly appreciated. I'm from the PIC generation and am a newbie to the HB and the 68HC11 Thanks in advance, Ranjit (26 years ago, 20-Jan-99, to lugnet.robotics.handyboard)
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| | IC
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Dear Mr Fred Martin/friends, Thank you for giving the site of the new library files.We started IC properly today.It gave NO 'synchronizing with board' errors. We input 1 + 2; and it gave the proper result.However when 123 * 2; was entered at the C> (...) (26 years ago, 19-Jan-99, to lugnet.robotics.handyboard)
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| | dig and analog address
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could someone please tell me the address of digital ports 2,6,7 and all the analog ports? For some reason or another I'm having software troubles and I'm having to map these myself.... Thanks for the help, Owen (26 years ago, 19-Jan-99, to lugnet.robotics.handyboard)
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| | handyboard mailing list
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Please include our names on the handyboard mailing list. Chen-Yung Hsu hsu3@cooper.edu Damee Choi choi5@cooper.edu Lee Jung Kim kim6@cooper.edu Thanx! =) (26 years ago, 19-Jan-99, to lugnet.robotics.handyboard)
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| | Java on Handy Board?
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Handy-folk, I recently discovered that there is an experimental version of Java for the 68HC11 microcontroller. Cool! It has been in field testing since June, and looks promising. The developers tell me that a beta version should be released in a (...) (26 years ago, 19-Jan-99, to lugnet.robotics.handyboard)
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| | Re: IC
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i am unable to reproduce the problem. perhaps comms between IC and your board are still unreliable. try writing a program that repeatedly prints to the LCD screen the result of 123 * 2. my guess is that it will work perfectly. also, make sure you (...) (26 years ago, 19-Jan-99, to lugnet.robotics.handyboard)
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| | Re: digital and analog port on HD
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I remember the Basic Stamp "POT" command which is used to read the position of a pot using a digital port. The Basic Stamps are made from PIC microcontrollers and the digital ports are bidirectional. That is they may be used as digital inputs or (...) (26 years ago, 19-Jan-99, to lugnet.robotics.handyboard)
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| | IC PROBLEM
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Dear Mr Fred Martin/Friends, I had written to the handy board mailing list about a rover that we are making at VESIT-Bombay-India.We were encountering some problems in starting IC,it was saying 'Synchronizing with board' and hanging. I had received (...) (26 years ago, 19-Jan-99, to lugnet.robotics.handyboard)
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| | Douglas Electronics Expansion Board.
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I ordered the kit the first day I could. I got it last Friday, and put it together over the weekend. The douglas board comes with NO assembly instrictions! These are some notes that ought to make things easier for others: RP1 & RP2: The both have a (...) (26 years ago, 18-Jan-99, to lugnet.robotics.handyboard)
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| | Re: digital and analog port on HD
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(...) Just thought I would add that it *is* possible (if a bit slow) to read an analog signal w/ a digital port by timing the decay of the signal thru a RC circuit...not a particularly precise method, either. < Watching for the Fedex guy bringing my (...) (26 years ago, 18-Jan-99, to lugnet.robotics.handyboard)
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| | Re: digital and analog port on HD
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(...) A digital port can't have the capability of an analog port, since it has only one bit of information with which to work. (A 256-value analog port has eight bits.) You could perhaps hook an analog sensor up to a digital port using some sort of (...) (26 years ago, 18-Jan-99, to lugnet.robotics.handyboard)
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| | Re: IC PROBLEM
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yes, you are having lib conflicts. you should get the latest at (URL) latest has _raw_analog in the .icb file and NOT in the lib_hb.c file. re: synchronizing probs, try running IC in a full screen DOS window, or boot your computer in DOS mode. the (...) (26 years ago, 18-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Scrolling through the LCD messages by the knob
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Hi Gustav, ich habe für mein HB ein Menüprogramm geschrieben, mit dem man mehrere Menüpunkte durchscrollen kann (Parametereingabe etc.) Falls Du noch interesse hast, sag Bescheid dann kram ich mal den Sourcecode bei mir wieder aus ! Tschau Bernd (...) (26 years ago, 18-Jan-99, to lugnet.robotics.handyboard)
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| | Re: cant control motor speed
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Hi Jeremy, Question: Do you use 30V for your Motor ? (external) IF NO: I´m testing several Motors from copier-machines (12V-24V) with my HB. Some motors didn´t work properly with PWM. For example Motor 24V I´m using ist with for 12V Motor (0,100) (...) (26 years ago, 18-Jan-99, to lugnet.robotics.handyboard)
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| | Repost: CD-ROM used as Audio CD player
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Hi, there must be somebody out there (except for you, Phil, thanks for your answer!) with useful informationon ;-) (...) Best regards, Alf (26 years ago, 18-Jan-99, to lugnet.robotics.handyboard)
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| | (no subject)
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Dear Mr Fred Martin/friends, The handy board assembly manual speaks of a custom testing software needed to test memory. I want it urgently to test memory ICs used on the handy board to find whether they is working properly. If you know where it can (...) (26 years ago, 18-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Readings
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yes, memory wires should be oscillating, back and forth betw 0 and 5 volts. this is not floating; floating implies not connected. re: your other DL probs, usually, it is a bad connection on the PCB. try continuity checks on the memory subsystem. (...) (26 years ago, 17-Jan-99, to lugnet.robotics.handyboard)
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| | ROVER
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Dear Friends, I had written to you about a rover we are making at VESIT-Bombay -India.We had encountered some problems regarding downloading the pcode_hb.s19 file.I thank you for the advice that you have offered us in this context. If we now (...) (26 years ago, 17-Jan-99, to lugnet.robotics.handyboard)
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| | Readings
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Fred- You left it unclear in an explanation to another letter. You were answering the fellow from India as to what readings one should see when useing a logic probe on the memory chip. You said that if one was stuck at 1 or zero-it might be (...) (26 years ago, 17-Jan-99, to lugnet.robotics.handyboard)
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| | Piezo Spkr Volume
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Is there any method of increasing the volume (amplitude) of the piezo speaker on the HB? Mine is extremely faint and can only be heard within a few inches from the board. (26 years ago, 17-Jan-99, to lugnet.robotics.handyboard)
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| | Expansion board Library
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Greetings, I have assembled my expansion board, mounted on the main board,running IC v3.1. Have downloaded expansion board libraries zip files,unziped and are inC/:Desktop/IC/ir/l...sion-libs. I have not been able to load expansion board files. Do I (...) (26 years ago, 17-Jan-99, to lugnet.robotics.handyboard)
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| | Handyboard for sale?
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If anyone has a handyboard w/wo an expansion board for sale. I would like to talk to you Jessemc@mail.utexas.edu (26 years ago, 17-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Expansion board motor outs???
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if this wasn't answered... yes, all DC motor outs are still available. fred (...) (26 years ago, 17-Jan-99, to lugnet.robotics.handyboard)
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| | (no subject)
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i am sorry, but i have never readied that software. to debug, use a logic probe and check all of the 28 pins of the RAM chip. address, data, and enable lines should be flashing when the HB is turned on. if you see a line stuck at 0 or 1 that might (...) (26 years ago, 17-Jan-99, to lugnet.robotics.handyboard)
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| | Processor load
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1) Is there a way to print the actual processor load onto the screen ? or another way to see for example how much load a program causes ? 2) Does anyone know what resistors i need to produce a voltage divider to measure the voltage of the battery (...) (26 years ago, 17-Jan-99, to lugnet.robotics.handyboard)
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| | digital and analog port on HD
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Hi, I want to use the digital port as an analog port input. How should I convert the digital port to analog in using programming way ? I do not quite understand the explanation on the technical manual handout. if possible, how to convert the analog (...) (26 years ago, 17-Jan-99, to lugnet.robotics.handyboard)
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| | Polaroid 6500 Ranging System
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I recently purchased a 6500 ranging system and have connected it to the HandyBoard (HB) 1.2 Expansion Board. I am using IC ver 3.1 from Newton Research Labs and loaded the sonar.c code module provided through the MIT website. The HB passed all (...) (26 years ago, 16-Jan-99, to lugnet.robotics.handyboard)
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| | Re: help again
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check that the RxD line on the hc11 is properly pulled up to +5v through R15. also, make sure you are *HOLDING DOWN* the STOP button until the BATT light goes off. this wasn't clear from your msg. finally, try getting the HB into boot mode with the (...) (26 years ago, 16-Jan-99, to lugnet.robotics.handyboard)
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