 | | Re: Disaster :-(
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it's extremely unlikely that removing a battery will have done any harm. which program precisely are you using to download the pcode? you should be using HBDL.EXE or DL.EXE or DLM.EXE. you should be trying to download PCODE_HB.S19. also, make sure (...) (26 years ago, 11-Feb-99, to lugnet.robotics.handyboard)
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| | Thanks
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Thanks for the info, it helps allot!!!. Clancy (26 years ago, 11-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Subject headers
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(...) Most email packages automatically insert this and it is quite alot of trouble to disable this for just one list. I usually look at the subject line and remove multiple "RE:" manually and some email packages do this automatically, too. I (...) (26 years ago, 11-Feb-99, to lugnet.robotics.handyboard)
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| | Disaster :-(
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Hi all, Help, I suspect that my handy board is dead..:-( I had it running at work and my boss pulled a battery out of the pack while a program was running. I now have the black squares across the top row indicating that there is no pcode or program (...) (26 years ago, 11-Feb-99, to lugnet.robotics.handyboard)
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| | Subject headers
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The "RE" in the subjuec headers is redundant. Also it confuses some of the e-mail filters. Please leave out the "RE". Thanks Ed Spike 73,33 -- (26 years ago, 11-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Expansion board assembly tips?
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there are bldg tips at (URL) your message you said: (...) (26 years ago, 11-Feb-99, to lugnet.robotics.handyboard)
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| | Large circuit construction - How?
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Hi All What is a good method to build circuits with say 5-10 ICs or more (say 14 to 20 pins on each IC) and assoicated discretes? I have been able to construct on Rat Shack et al copper proto boards circuits with 1 or 2 ICs and point to point wiring (...) (26 years ago, 11-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Expansion board assembly tips?
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Hello All, My expansion board went together well considering I have little experience building kits. Try to get the header pins straight before sodering all the pins. Terry G. ---...--- (...) wondering (...) at (...) (26 years ago, 11-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Stack Overflow
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Hi everyone: Sorry for the reply latency, I was buried under an avalanche of work and assignments. Changing the format of the code (as detailed below) helped immensely. I re-wrote two of my drivers to use the increased size, and everything is (...) (26 years ago, 11-Feb-99, to lugnet.robotics.handyboard)
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| | HELP
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I am just wondering if anyone has had an experience with New Micro's NMIX - 0020 board before? I am having problem downloading my program. Regards, Felix (26 years ago, 11-Feb-99, to lugnet.robotics.handyboard)
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| | Re: MC 68HC711 E9CFN2 - please help me as soon as possible!!!!
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(...) The EPROM is probably disables with a setting in the config register. If folks are looking for cheap 68HC11A1FN's, I was able to get 'em for about $5 each, and they came with a bunch of other electronics, and 2 motors. Turns out Connor disk (...) (26 years ago, 10-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Purchase a handyboard? where???
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(...) I recommend saving up your milk money and buying a pre-assembled, tested HandyBoard. Sure, it costs a little more, but for me (electronics moron that I am) it was worth it. I bought mine from Patrick Hui at the Robot Store in Hong Kong. I can (...) (26 years ago, 10-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Polaroid Sonar Questions
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(...) <snip> (...) I found that returning the median (middle value) of three successive readings filters out the noisy readings quite well--especially the occasional large error. Just a couple nested if-then statements are needed. (...) Sure, that (...) (26 years ago, 10-Feb-99, to lugnet.robotics.handyboard)
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| | Expansion board assembly tips?
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I just got a expansion board kit from Douglas Electronics and was wondering if anyone has any tips for assembling the board, I'm quite experienced at building kits but I thought maybe someone who had built the kit already might offer some advice, (...) (26 years ago, 10-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Stupid multiple sonars...
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(...) It is correct that you can use the remaining SPI pins as digital outs to trigger a second sonar. I've done it and it works fine. It's also true that there *is* signal contention on the echo lines if you simply plug 'em both into the same TIC (...) (26 years ago, 10-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Beginner's questions...
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(...) You'll need slotted disks mounted on the axles positioned between the emitter and the detector. I recommend using ones from a dead computer mouse. (...) You ought to check for wiring problems and excessive friction in the gears and axles. That (...) (26 years ago, 10-Feb-99, to lugnet.robotics.handyboard)
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| | RE:Handyboard project
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Hi James, I purchased an assembled and tested H Board from Patrick Hui for about $200, as well as the registered version of IC. Also got his sensor kit ($15). Expansion Board was purchased from Gleason for $59. Also bought the sensor/motor kit from (...) (26 years ago, 10-Feb-99, to lugnet.robotics.handyboard)
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| | Re:Re: Beginners questions
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I got the gear sets from HVW Technologies in Canada. (URL) gear sets were pretty cheap when you take into account the exchange rate - about $20 for two. They come with motors but youll have to swap them with something else because the motors are (...) (26 years ago, 10-Feb-99, to lugnet.robotics.handyboard)
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| | etching a handyboard
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What is the best way to manually etch the handy board, i've etched it by passing the circuit layout through the printer 3 times then ironing it on to the copper board. This works well but some traces bleed together. I have access to a PCB repair (...) (26 years ago, 10-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Canadian Boarder
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Digikey has a Canadian division also, its based out Ontario. I just recieved a list and they mostly everything on the list that has digikey beside it but nothing else. The total cost for these parts is $60 + or - $5. I hope this helps, where are you (...) (26 years ago, 10-Feb-99, to lugnet.robotics.handyboard)
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| | Beginner's questions...
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Hello again all, Well, I've got an HB, HB Expansion board, geared motors (motors from Gleason, gears from HVW, "mashed" to fit), some good batteries and a downloader. I've also got sensors such as QRB1114 infared detectors, some General Electric (...) (26 years ago, 10-Feb-99, to lugnet.robotics.handyboard)
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| | Re: I need a little help with understanding processes
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The most common problem many people have regarding processes is that they incorrectly assume you should call start_process repeatedly in order to keep a background process running. This is completely wrong, and it will crash the system one way or (...) (26 years ago, 10-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Polaroid Sonar Questions
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Good comment, Duncan. I intend rotating the 45° coverage through a full 360°. Using multiple transducers allows for more frequent pings and (I think) will provide greater resolution. - - - Nick - - - (...) (26 years ago, 9-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Purchase a handyboard? where???
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|
Hi all, I want to know if Anyone will be selling the handyboard @ the Trinity firefighting home robot contest this year in Conn? also any links to where I can get one otherwise would be much appreciated. thanx -Mike (26 years ago, 9-Feb-99, to lugnet.robotics.handyboard)
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| | I need a little help with understanding processes
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Hi: I know the essential facts about IC's multitasking facilites and how to implement processes. But if you have too many processes is it normal for the board to reset? If so, how can it be prevented. Also how do I figure out for how many ticks to (...) (26 years ago, 9-Feb-99, to lugnet.robotics.handyboard)
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| | Polaroid Sonar Questions
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I'm looking for help/advice with my sonar setup. At present I've got a single sonar connected to the new Expansion Board and have been doing a calibration. My goal is to use four transducers to cover a 45° arc. Here are my problems/questions: 1. How (...) (26 years ago, 9-Feb-99, to lugnet.robotics.handyboard)
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| | MC 68HC711 E9CFN2 - please help me as soon as possible!!!!
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Hi! Please Fred Martin or somebody please help me on this! I'd like to know if the MC 68HC711 E9CFN2 chip can be used with the HandyBoard. It has 12 kB of internal EPROM, I've never seen a smd eprom chip, but I don't need the EPROM. The case is that (...) (26 years ago, 9-Feb-99, to lugnet.robotics.handyboard)
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| | Downloading
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Thanks for the new Downloader_MCL Fred!! Finally I can reliably download the pcode to my Handyboard. I've had my board for some time now and had almost given up hope about ever using it. However, the new downloader works perfect. Now I can get into (...) (26 years ago, 9-Feb-99, to lugnet.robotics.handyboard)
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| | before to try to unsubscribe
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I have been a member of this list for a while now. I enjoy this list very much and find it to be very useful and helpful. The issues that the members bring forward are great and the support/attention that Fred G. Martin gives to the list is out of (...) (26 years ago, 9-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Stupid multiple sonars...
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|
a small signal diode like 1N914 should do. -----Original Message----- From: Ian Hojnicki <damasta@camelot.bradley.edu> To: handyboard@media.mit.edu <handyboard@media.mit.edu> Date: Tuesday, February 09, 1999 12:16 AM Subject: Stupid multiple (...) (26 years ago, 9-Feb-99, to lugnet.robotics.handyboard)
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| | unsubscribe
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I would like to unsubscribe the mailing list Thank you (26 years ago, 9-Feb-99, to lugnet.robotics.handyboard)
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| | Re: IR
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hi! we are currently doing our thesis and we find it difficult to program and connect the IR to the HB. could anyone please help???? -theresa (26 years ago, 9-Feb-99, to lugnet.robotics.handyboard)
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| | Stupid multiple sonars...
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I guess I have a really simple question to ask... I know that I can share many of the lines off of the SPI in order to hook up two polaroid sensors... However, is it really necessary to add a diode to each of the ECHO lines? If so, what are the (...) (26 years ago, 9-Feb-99, to lugnet.robotics.handyboard)
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| | Color sensor
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Fred and others, I was the one who posted some questions regarding on ball sensors, and thanks for all those varied replies. I am also considering a color sensor, since tennis ball have a distinct color - I supposed that a color sensor is enough. I (...) (26 years ago, 9-Feb-99, to lugnet.robotics.handyboard)
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| | 68HC11 Emulator for Win-32
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The March, 1999 issue of Dr. Dobb's Journal has an article about WOOKIE, a windoze based emulator for 68HC11 software development. It looks interesting. The source and an executable are available as freeware from: (URL) - - - Nick - - - (26 years ago, 8-Feb-99, to lugnet.robotics.handyboard)
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| | Unsuscribe
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I would like to unsiscribe from the mailing list. Thank you. (26 years ago, 8-Feb-99, to lugnet.robotics.handyboard)
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| | Canadian Boarders?
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I would like to know if there are any Canadians on the list to talk about parts acquisitions. It seems that my local radio shack is quite useless for this kind of project I would just use the parts list but I am saving it as a last resort as you (...) (26 years ago, 8-Feb-99, to lugnet.robotics.handyboard)
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| | Unsuscribe
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I would like to unsuscribe from the mailing list. Thank you (26 years ago, 8-Feb-99, to lugnet.robotics.handyboard)
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| | Newton Operating System
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Does anyone know whether one can run a Handy Board with software for a Newton. We have an Apple eMate, which has a Newton operating system and it would be useful to run the Handy Board with it. Mike Howard (26 years ago, 8-Feb-99, to lugnet.robotics.handyboard)
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| | HOW TO UNSUBSCRIBE
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hmm, the last reminder "didn't take." to unsubscribe from the Handy Board list, send mail to fredm@media.mit.edu. Please, please, *please* DO NOT send mail to handyboard. one thousand tongue lashings will follow if you disobey these instructions. (...) (26 years ago, 8-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Unsuscribe
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I was wondering if any of you knew where to get a SN28784 chip, which is on the Sonar Module board. I did find the TL851 from Texas Instruments, but no luck finding the SN28784. I would appreciate help from anyone, thank you. oooo$$$...$$$oooo (...) (26 years ago, 8-Feb-99, to lugnet.robotics.handyboard)
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| | download without interface board
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I was wondering if there is a way to directly connect to the handyboard, without the interface/charger board. Perhaps using the interface cable from a miniboard. can I download a program the same as the miniboard. If anyone has any experience with (...) (26 years ago, 8-Feb-99, to lugnet.robotics.handyboard)
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| | Re: where do you buy a 68hc11?
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|
Hello Steve, Try B G Micro, I bought three from them a while back for $6.95 each. They may be removed from equiptment but mine worked ok. Terry Gathright ---...--- (...) (26 years ago, 8-Feb-99, to lugnet.robotics.handyboard)
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| | Re: where do you buy a 68hc11?
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|
Try (URL) ( 1-800-276-2206 ) I just purchased two 68HC11A1FN's for $6.95 each. G'Luck, Ranjit (...) -- Ranjit Diol - COMPSys Dowagiac,Michigan e-mail: rsdiol@mail.com website: (URL) (26 years ago, 8-Feb-99, to lugnet.robotics.handyboard)
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| | Problem with my handyboard
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My handyboard is dead. It happened when I was fooling around with the expansion socket J3 and the LCD socket. I might have induced a short. Now first here are the symptoms: - I can download the pcode to the handyboard. It says the bootstrap was (...) (26 years ago, 8-Feb-99, to lugnet.robotics.handyboard)
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| | where do you buy a 68hc11?
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|
Hello all, I'm in the purchasing phase of my handy board project. I understand that Digi-Key and Mouser do not sell 68HC11 microcontrollers. I tried Newark, and they want me to buy 23 at a time(!) Where have you been buying your 68HC11's? (I may be (...) (26 years ago, 8-Feb-99, to lugnet.robotics.handyboard)
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| | DAA and Test Opcodes
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|
Hello All, Does anybody use the DAA and TEST opcodes? Thank You, Scott Jappinen (26 years ago, 8-Feb-99, to lugnet.robotics.handyboard)
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| |
| | Re: Handyboard Expansion Sonar Issues
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|
Hello All, Still a little confused about connecting the sonar unit. Can I simply plug the polaroid connector to the sockets provided ,install the 1.5 wire to digital 7 , install the cap at C7? or do I have to have the diodes and connect to the motor (...) (26 years ago, 7-Feb-99, to lugnet.robotics.handyboard)
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| | BEEPER
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|
Dear Friends, We have put ICs 6811,74374,74244,622...4132,74138 on the handy board.The charger interfacer board is completely ready.All resistors, capacitors have been completely connected.LCD is not connected. When we try to download the pcode, it (...) (26 years ago, 7-Feb-99, to lugnet.robotics.handyboard)
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| |
| | Re: Matrices with Interactive C?
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Dear Peter, It supports multidimensional arrays, hence I think you can write a program to do matrix operations. Yours Sincerely, Nitin (...) (26 years ago, 7-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Thanks
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Thanks, I had overlooked the spot somehow. Terry G. (26 years ago, 7-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Handyboard Expansion Sonar Issues
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sonar stuff is at (URL) fred In your message you said: (...) (26 years ago, 7-Feb-99, to lugnet.robotics.handyboard)
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| | Unsuscribe
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I would like to unsubscribe from the mailing list. Thank you (26 years ago, 7-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Handyboard Expansion Sonar Issues
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|
Look at these: (URL) and (URL) also added a 100uF cap across the supply as shown in this link: (URL) suggest ana even larger cap. (470uF), but I haven't had any problems with power sag until the batteries are almost discharged. - - - Nick - - - (...) (26 years ago, 7-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Handyboard Expansion Sonar Issues
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|
Hello, Where do I look for the directions for connecting the Polaroid sonar to the expansion board. <put the capacitor c7 (0.1uf) in the sonar board, as indicated in the directions? > Thanks Terry G. ---...--- (...) (26 years ago, 7-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Interactive C Primitives
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[Fred G. Martin] spake unto the ether: (...) Security through obscurity is always a bad idea :-) I can agree that software data structures are not public, but all the hardware stuff should be documented, since it's not likely to move around. *Rich* (26 years ago, 7-Feb-99, to lugnet.robotics.handyboard)
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| | Re: BEEPER
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|
it *might* be comms problems between the HB and your PC. if you can find an old 386/486, try the downloader on that. also, try booting your PC into DOS mode and see if things work better. f. In your message you said: (...) (26 years ago, 7-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Interactive C Primitives
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these are documented in sec 5.10 of the hb tech ref. the larger issue is knowing the places you are supposed to peek and poke. some of these are hardware specific (e.g, motor port); others are software based/defined in the pcode implementation (...) (26 years ago, 7-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Interactive C Primitives
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|
My apologies for having posted this question. After re-reading the HB Tech Manual for the umpteenth time, para. 5.10 suddenly appeared out of nowhere! *Nick hangs his head in shame* - - - Nick - - - (...) (26 years ago, 7-Feb-99, to lugnet.robotics.handyboard)
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| | Interactive C Primitives
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There are several IC primitives for which I cannot find documentation nor source, such as: poke, peek, pokeword, peekword, bit_set, bit_clear These six are relatively simple to figure out by context and familiarity with other languages, but I find (...) (26 years ago, 7-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Handyboard Expansion Sonar Issues
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|
The quickest check is to go from V+ of the diode string and see if continuity to pin 1 of TL851 and pin 5 of SN28784 are less than 5 ohms. Similarly check from ground of your power connector to pin 3 of TL851 and pin 16 of SN28784 are less than 5 (...) (26 years ago, 7-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Dinsmore Compass 1490
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|
The Dinsmore 1490 (basically a Hall effect unit) reports the 8 cardinal compass points, a 45 degree precsion (N-NE-E-SE-S-SW-W-NW). If you wanted more precision then you have to upgrade to the Dinsmore 1525 or 1655 which produce analog signals. They (...) (26 years ago, 6-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Dinsmore Compass 1490
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(...) Why would you want to? They would be as expensive to build than to buy. The Dinsmore device is only $12, and PNI Vector2X is $49. (retail, probably cheaper somewhere). The Dinsmore device has a compass mechanism (real basic, like you take (...) (26 years ago, 6-Feb-99, to lugnet.robotics.handyboard)
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| | [moderately off topic post] LCD shutter material?
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|
Hi all, This really doesn't have anything to with the HB, but I'm at my wits end: I'm building a large high speed shutter-type device that will be controlled by a microcontroller (likely a BS2SX). Years ago I heard of a type of LCD shutter material (...) (26 years ago, 6-Feb-99, to lugnet.robotics.handyboard)
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| | IR Proximity Detector using a pic
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Hi, I found this very easy and cheap to build IR Proximity Detector. It uses one PIC12C508 or 509. I post this on the mailing list, because i searched some days until i found it, and maybe there are people, who are searching the same :) For those (...) (26 years ago, 6-Feb-99, to lugnet.robotics.handyboard)
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| | RE: Dinsmore Compass 1490
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|
You say these devices just use hall effect devices to detect the direction, do you have any technical information that would assist in producing a digital compass from scratch ?. Thanks John Hatton mailto:johnhatton@email.com (...) (26 years ago, 6-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Dinsmore Compass 1490
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(...) The dinsmore devices are really easy to work with. This one has 4 hall effect devices in it, and the output is digital. If you align it with cardinal coordinates you can tell North, East, South, and West very easily only one device is (...) (26 years ago, 5-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Please help!!!!!!!
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|
yes, the only change is that R11 moved (and should be 5 watts now). sorry i haven't updated things, but that's really all that's different. fred In your message you said: (...) (26 years ago, 5-Feb-99, to lugnet.robotics.handyboard)
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| | Dinsmore Compass 1490
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Hi, I found this on the internet, and I wanted to know if anyone is using it: (URL) produce a digital Compass which is very cheap ($12 only). Anyone already used such a compass ? Is there a way to get such a compass working with the HandyBoard ? (...) (26 years ago, 5-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Handyboard Expansion Sonar Issues
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|
Bill - - Thanks! - - - Nick - - - (...) (26 years ago, 5-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Handyboard Expansion Sonar Issues
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|
(...) It's possible that the flat flex cable could make electrical contact either way, since the socket has "teeth" in it that could penetrate the insulation on the one side of the cable. And *don't* trust that the dotted edge is the correct one; I (...) (26 years ago, 5-Feb-99, to lugnet.robotics.handyboard)
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| | Parts list up-date
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I will be going down to my local electronics store to buy the part to put two of these boards together. I have been going through the list to get a true description of all the parts and have found that Digi-key no longer stocks some parts by the (...) (26 years ago, 5-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Handyboard Expansion Sonar Issues
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Thanks. That seems to have done it. I don't know how I missed that line. Way cool device. Thanks again for your help. Stephen Michael sa_michael@hotmail.com (...) MHotMailB8836FEE69C5...0D6B0DFE0; Thu Feb 04 14:53:35 1999 (...) didn't use HELO (...) (26 years ago, 5-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Please help!!!!!!!
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|
We ought to get Fred's input on this; however, the only change I see is that Resistor R11 has been moved between versions 1.0 and 1.1. Everything else looks to me to be the same between the two versions. (...) ___...___ Chad Pennebaker, President (...) (26 years ago, 5-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Handyboard Expansion Sonar Issues
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(...) Please explain. Now I'm worried about damaging my sonar board. Since the foil cable has conductors on only one side, I didn't think that it was possible to plug it in "backwards" and still make an electrical connection. My understanding of the (...) (26 years ago, 5-Feb-99, to lugnet.robotics.handyboard)
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| | Please help!!!!!!!
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I have a serial/batt board that's version 1.1 and it is not the board specified in the assembly manual so I have no clu on how to construct the thing I searched the site but there are no assembly instructions for this version can somebody help me (...) (26 years ago, 5-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Matrices with Interactive C?
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Adam: You have made a 2 dimensional aray? How did you do it? Did you use int foobar[2][3]; ?? I cound not get it to work this way. Thanks for the insights, --philsky (26 years ago, 5-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Handyboard Expansion Sonar Issues
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There is a very high probability that you plugged the foil cable in backwards. Doing so, even for a moment, will destroy the IC chips. It will still click (I haven't figured that one out yet), but the IC chips and possibly even the electrolytic (...) (26 years ago, 5-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Matrices with Interactive C?
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I don't think it 'directly' supports matrices, but I have used a 2 dimenstional array to simulate a matrix. You may have to write some functions for multiplication etc, but it works ok. -----Original Message----- From: Peter Eacmen (...) (26 years ago, 5-Feb-99, to lugnet.robotics.handyboard)
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| | Re: stack pointer
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Windows tips: Tip 1: Lose Windows!!! Reboot your computer, hit "F8" when the little message "Starting Windows 95" comes up. Select the option "Command prompt only". Now, run IC and/or DL and you should have no problems. Basically, windows is nothing (...) (26 years ago, 5-Feb-99, to lugnet.robotics.handyboard)
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| | Re: A few questions...
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a few notes... in the faq there is a discussion about how to measure the resistance of a motor coil, as a way of determining if it's compatible with the hb. also in the faq, is a description of a mod that will allow using a separate power supply for (...) (26 years ago, 5-Feb-99, to lugnet.robotics.handyboard)
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| | Re: A few questions...
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I bought their Robot Platform (roomy and sturdy!) which came with two gearbox motors. I, too, am using the HB w/exp. If the motors you received are the same as the ones that are used on their Platform then you will have trouble using them via the HB (...) (26 years ago, 5-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Motor outputs
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Texas Instruments is the original manufacturer for those IC's (...) (26 years ago, 5-Feb-99, to lugnet.robotics.handyboard)
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| | A few questions...
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Hello all, I have gotten both a Handy Board and an expansion board and they both appear to work. My servo problem reported earlier is no longer an issue. I plan to use the HB with two High Power gear box/motor sets I got from HVW Technologies. They (...) (26 years ago, 5-Feb-99, to lugnet.robotics.handyboard)
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| | Matrices with Interactive C?
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Does interactive C support matrices? (26 years ago, 4-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Close out blank PC boards
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i would ask people to please not patronize this person, as his email is a spam. thank you, fred (26 years ago, 4-Feb-99, to lugnet.robotics.handyboard)
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| | Re: stack pointer
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it's probably a comms problem. make sure to use full screen dos window. maybe other windows people can suggest tweaks they've used to get their machines talking to ethe board reliably? fred In your message you said: (...) (26 years ago, 4-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Handyboard Expansion Sonar Issues
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did you put the capacitor c7 (0.1uf) in the sonar board, as indicated in the directions? if not, plesae do so and let me know if this solves your problem. fred In your message you said: (...) (26 years ago, 4-Feb-99, to lugnet.robotics.handyboard)
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| | Close out blank PC boards
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I obtained the close out inventory (about 450 boards) of a custom printed circuit board manufacturer and I am offering the following sizes to others wanting to make their own printed circuits using these blank boards. 1ea 3x5 $ .45 double and single (...) (26 years ago, 4-Feb-99, to lugnet.robotics.handyboard)
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| | RE:stack pointer
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hi fred and all, i am facing a problem with the handyboard about the stack pointer. every time i use a check on the digital and analog port on the console window, it will give me a result of stack pointer off by 65... bytes. i would like to know (...) (26 years ago, 4-Feb-99, to lugnet.robotics.handyboard)
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| | Re: sensors for tennis ball
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Hi all, Does anyone know how advanced is the lego mindstorms robotics kits? And how much programming can you do with them? thanks -Mike (26 years ago, 4-Feb-99, to lugnet.robotics.handyboard)
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| | RE: Handyboard Expansion Sonar Issues
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To anyone who can help: I too have contructed the HB expansion board. All i/o ports appear to work. The servo controllers appear to work well also. However, like Ranjit, I'm having Polaroid Sonar problems. I got this as a kit from Wirtz Electronics. (...) (26 years ago, 4-Feb-99, to lugnet.robotics.handyboard)
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| | Unsubscribe
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Thank's for the help !! Bye (26 years ago, 4-Feb-99, to lugnet.robotics.handyboard)
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| | Re: NVRAM
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Dallas Semiconductor makes some static RAMs with an internal battery. One of them is the DA1230AB/Y, a 256kbit (32Kbyte) battery backed static RAM. (URL) - - - Nick - - - (...) (26 years ago, 4-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Memory erase or reset?
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Either disconnect the batteries and all sources of power or remove the memory chip.... -phil (26 years ago, 4-Feb-99, to lugnet.robotics.handyboard)
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| | Re: R4 Resistor
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thank you! yes, 3.83k is correct. fred In your message you said: (...) ile (...) (26 years ago, 4-Feb-99, to lugnet.robotics.handyboard)
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| | Re: Re: R4 Resistor
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"Fred G. Martin" schrieb: (...) i have had the same problem, so i havent installed the ir-circuit yet. the mistake is in "The Handy Board Technical Reference" (July 12, 1998) PDF File ... On page 46 ( i am not sure) is a Part Listing: it says : .... (...) (26 years ago, 4-Feb-99, to lugnet.robotics.handyboard)
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| | Setting the Config Register
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Greetings all! I just finished building the handyboard from a kit, and it seems to be working just fine except for the fact that I can't seem to get the config register to set to 0x0c. It is now working on the 0x0d setting, but I know this is (...) (26 years ago, 4-Feb-99, to lugnet.robotics.handyboard)
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| | Re: R4 Resistor
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where is this list that says 2.94K? please tell me so i can eradicate the incorrect value. to answer, yes, just use it, it affects the IR xmit frequency and nothing else. fred In your message you said: (...) (26 years ago, 4-Feb-99, to lugnet.robotics.handyboard)
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| | NVRAM
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Hi! Here is Cesar Mello, from Brazil. I'd like to know if there is any NVRAM version of the 62256 chip, or any other solution smaller than the external batteries, or if it's possible to keep Interactive C and the user program loaded in an EPROM. (...) (26 years ago, 4-Feb-99, to lugnet.robotics.handyboard)
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