 | | 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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