 | | 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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