 | | Re: Pseudocode
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I think what you may be wondering is how does the code do all this at once instead of sequentially as normal code runs. If you are not wondering this then I'll tell you anyway. The awesome feature of the handyboard is the pcode. The pcode is a (...) (27 years ago, 20-Sep-97, to lugnet.robotics.handyboard)
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| | Re: LEGO motors and the handyboard ?
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Cutting the trace is only ONE solution! I had the same problem and did not consult the handyboard FAQ on the web. This FAQ gives you some options if you don't want to damage your board. Another solution is to use your own custom H-bridge, or do like (...) (27 years ago, 20-Sep-97, to lugnet.robotics.handyboard)
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| | Re: Pseudocode
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(...) One thing to remember: the input is the world (through the sensors) and the output are the robots actions on the world. A program outline repeat turn on drive motors repeat read wall/obstacle sensor until sensor reads an obstacle stop motors (...) (27 years ago, 19-Sep-97, to lugnet.robotics.handyboard)
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| | Re: LEGO motors and the handyboard ?
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The HB gets reset due to the large current drawn from the motors. You should separate HB and motors power supply. What you need is to cut the trace (+ve motor power share with HB main power) nearby J13. Then, apply motors power supply to J13 and (...) (27 years ago, 19-Sep-97, to lugnet.robotics.handyboard)
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| | Pseudocode
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Hello, Im very new to the list and to the entire concept of all of it basically. but- i'll cut to the chase (its breif) Just learning c programming i ran across a chapter in the book which explains pseudocode and its impact. I dont know how many (...) (27 years ago, 19-Sep-97, to lugnet.robotics.handyboard)
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| | Handyboard and TTL ?
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L.S. I come across all nice little modules wich send out TTL signals like light sensors, clock modules etc. I would like to use a couple of them to spice up my robot but haven't got a clue what TTL is and how to use it. I tried to look on the (...) (27 years ago, 19-Sep-97, to lugnet.robotics.handyboard)
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| | LEGO motors and the handyboard ?
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L.S. Recently I connected 3 standard LEGO motors to the Handyboard to power a 4 wheel driven LEGO model I build. With the standard LEGO (9v 7VA) adapter I can easily run 3 motors at once without any noticable slow down of any of them. But when (...) (27 years ago, 19-Sep-97, to lugnet.robotics.handyboard)
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| | polariod sonar system
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does anybody have a circuit for a polariod sonar/traking system, I've got three polariod transducers in my spare's box and I desperatly want to use them on my 'bot. (27 years ago, 18-Sep-97, to lugnet.robotics.handyboard)
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| | mini ssc
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Hi, Has anyone successfully interfaced the handyboard with Minissc II servo controller by lynxmotion? I'm thinking about purchasing one, however is it cheaper to build one yourself? anyone did this? thanks, phet (27 years ago, 18-Sep-97, to lugnet.robotics.handyboard)
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| | Re: mc68hc11
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The 68hc11s all have the same core processor. They are not all the same; they have different peripherals, pins, ports, etc. The a1fn is the a8 with the rom disabled. So it is pin compatible. Check out the pink book or www.mot.com for more details. (...) (27 years ago, 18-Sep-97, to lugnet.robotics.handyboard)
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| | Re: Homebrew Sonar
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Here's an idea for homebrew sonar that I keep mulling over but haven't built yet. If anyone builds one of these be sure and tell me if it doesn't work so I won't :-) Basically the idea goes like this: take a signal generator (like the EXAR chip) and (...) (27 years ago, 17-Sep-97, to lugnet.robotics.handyboard)
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| | Re: Homebrew Sonar
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Check out (URL) There's some basic theory and 6811 assembly code in there for doing time-of-flight stuff with el cheapo 40kHz transducers we got from All Electronics Corp and some homebrew circuitry. Colby --- "King, Terry" wrote: (...) --- end of (...) (27 years ago, 17-Sep-97, to lugnet.robotics.handyboard)
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| | Homebrew Sonar
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(...) Check this site out, it might be what your looking for: (URL) pretty complete with theory, schematics, construction advice, etc.. I hope it helps. Terry King Terry.King@fmr.com (27 years ago, 17-Sep-97, to lugnet.robotics.handyboard)
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| | mc68hc11
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hi Are all chips in the mc68hc11 family alike? in other words, coulda mc68hc11a1fn chip replace any other mc68hc11 chip? Ore are the circuitry diffrent? Also, i was checking out motorolla's mc68hc11 website, and they had a 'hc11 referense and (...) (27 years ago, 17-Sep-97, to lugnet.robotics.handyboard)
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| | Re: mc68hc11a1fn
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(...) Check out (URL) for 6811 info, Motorola's own site with a wealth of good downloadable stuff. Regards Colin Barnard Miranda Robotics 'O brave new world that has such creatures in it' 54 London Road Teynham Kent ME9 9QN England (27 years ago, 16-Sep-97, to lugnet.robotics.handyboard)
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| | Re: mc68hc11a1fn and sonar
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Hi, In addition to de reference manual I started reading a book called "Microcontroller technonoly, the 68hc11" by Peter Spasov (ISBN-0-13-583568-2). I think it's a rather good book. It begins with the fundamentals of microcontrollers. It handles (...) (27 years ago, 16-Sep-97, to lugnet.robotics.handyboard)
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| | mc68hc11a1fn and sonar
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hello, everyone I have 2 questions: Does anyone know of any good books or sites about the motorolla mc68hc11 family? I'd like to understand on how this actually works and stuff. Is the Motorola mc68hc11 reference manual a good book for the job? Are (...) (27 years ago, 16-Sep-97, to lugnet.robotics.handyboard)
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| | PCode
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Hello, I'm trying to decipher IC's command stream w/ the handyboard. I've downloaded the IC source, but before spend a lot of time munging the code, are there other documents describing the theory of the Pcode interpreter? I imagine it was a lot of (...) (27 years ago, 16-Sep-97, to lugnet.robotics.handyboard)
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| | Re: IR and Sonar
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Try Radio Shack, Digikey, Mouser Electronics for IR stuff. Polaroid OEM Components Group. 800 392-1170 2 sonars for $99. It's a bit pricey so whether it's worth the money depends on you. It may be worth is just to get used to tinkering with (...) (27 years ago, 15-Sep-97, to lugnet.robotics.handyboard)
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| | Dual Hall Effect Sensor hook up
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I have the Micro 8SS27 dual hall effect sensor (received from Gleason Research), which I intend to use for a shaft encoder. Can someone help me figure out how to hook it up? Thanks. To get random signatures put text files into a folder called (...) (27 years ago, 15-Sep-97, to lugnet.robotics.handyboard)
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| | Motor wiring and capacitors
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Hello handy boarders I have a wire guided car that I want to us as a robot platform. It has differential steering. The wiring of the two motors has a total of 3 wires with a jumper cable between the two motors. Can I wire the existing black, red, (...) (27 years ago, 15-Sep-97, to lugnet.robotics.handyboard)
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| | Motor wiring and capacitors
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Hello handy boarders I have a wire guided car that I want to us as a robot platform. It has differential steering. The wiring of the two motors has a total of 3 wires with a jumper cable between the two motors. Can I wire the existing black, red, (...) (27 years ago, 15-Sep-97, to lugnet.robotics.handyboard)
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| | RS-485 Network
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I'm trying to build a rs-485 netwotk. Do you know if exist some protocol to start to work? German Pablo Gentile Systems Engineer. Electronics Expert. (really??? ;>) ) ggentile@cvtci.com.ar (27 years ago, 15-Sep-97, to lugnet.robotics.handyboard)
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| | sony ir files
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Hello fellow Handyboard users, I am a student at Albion College who is doing a directed study in robotics. I have been trying to use the sony-ir.icb file on the Handyboard. I followed the user guide instructions by replacing the r22_ir.lis file with (...) (27 years ago, 15-Sep-97, to lugnet.robotics.handyboard)
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| | Re: Batteries problem
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(...) Avoid this problem by using a pre-assembled battery pack. I sell an 8 AA 9.6v 650mAH shrink wrapped pack with solder tags in the UK for GBP15-00 including UK postage and VAT. Also available with leads, plugs etc, name your choice. If this item (...) (27 years ago, 15-Sep-97, to lugnet.robotics.handyboard)
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| | IR and Sonar
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I was using the IR sensors that ship with the handyboard from Gleason Research up until recently. I managed to melt both of them. Anyways, I am looking for some good IR sensors and emitters that can detect an object before my robot hits it. :-) Can (...) (27 years ago, 15-Sep-97, to lugnet.robotics.handyboard)
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| | How to order IC 3.1
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(...) Firstly, we wish to apologize to the Handyboard community for difficulties purchasing Interactive C 3.1 through Digital Micro Systems. We've tried to contact DMS, but no luck so far after the move. We are attempting to make a deal with them to (...) (27 years ago, 15-Sep-97, to lugnet.robotics.handyboard)
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| | Re: anywhere to buy IC 3.1 besides Digital Micro Systems?
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Greetings, Mr. Drushel, HandyBoard list, An email sent earlier to this list from Newton Labs indicating that they would be selling its product directly, (while DMSC is offline, I take it). Regarding the same subject, I would like to inquire if (...) (27 years ago, 14-Sep-97, to lugnet.robotics.handyboard)
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| | anywhere to buy IC 3.1 besides Digital Micro Systems?
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I have been trying for most of this week to access the online ordering form at Digital Micro Systems (the link from the Newton Labs page) to order a copy of IC 3.1. The first couple times I tried, I actually got to the form, but it barfed when I (...) (27 years ago, 14-Sep-97, to lugnet.robotics.handyboard)
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| | Re: Batteries problem
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The packs you are using are 4x1.2V=4.8V. That's not enough for the HB to operate on. You need to connect the two packs in series and then to the HB. The red of one pack goes to the black of the other. The remaining two wires, red and black, one from (...) (27 years ago, 14-Sep-97, to lugnet.robotics.handyboard)
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| | Batteries problem
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I am trying to connect the batteries to the HB but after hours of charging the screen doesn't turn ON. The batteries are two packs of 4 and I connect the two reds with +ve and the two blacks with -ve Is there any case that I connect the wires (...) (27 years ago, 14-Sep-97, to lugnet.robotics.handyboard)
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| | How to get IC 3.1 ?
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Hoi, Anybody got a clue how to get Interactive C and the corresponding registration key ? I ordered it with DSMC and lost contact since. My key expired ofcourse without any response from them what so ever. I mailed DSMC again without any luck so I'm (...) (27 years ago, 13-Sep-97, to lugnet.robotics.handyboard)
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| | Have 68HC11's - will trade for Motor Drivers etc.
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I have a limited supply of Motorola MC68HC711E9CFN2 chips I will trade for other Handy Board Components (Motor Drivers, IR receivers, LCDs etc). The 12K OTP ROMs have been previously programmed. The chips come with the OTP ROM contents zeroed and (...) (27 years ago, 12-Sep-97, to lugnet.robotics.handyboard)
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| | IR sensor
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Hello there, Is it just me or can I not find any specific information dealing with the functions for the HB's IR sensor, (not the sony_ir stuff). What are the arguments the functions carry? What do they return? Basically, how do I use it? I just (...) (27 years ago, 11-Sep-97, to lugnet.robotics.handyboard)
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| | Re: My robot is on the web
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Keith, Pretty cool! How'd you get the sonar servo to rotate 180 degrees? Mike Ross (...) (27 years ago, 11-Sep-97, to lugnet.robotics.handyboard)
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| | (no subject)
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I'm trying to build a rs-485 netwotk. Do you know if exist some protocol to start to work? German Pablo Gentile Systems Engineer. Electronics Expert. (really??? ;>) ) ggentile@cvtci.com.ar (27 years ago, 11-Sep-97, to lugnet.robotics.handyboard)
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| | My robot is on the web
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Just in case any of you would like to see my robotic creation it is now on the web as: (URL) me what you think. Keith Keith Soldavin kas219@email.psu.edu (URL) (27 years ago, 11-Sep-97, to lugnet.robotics.handyboard)
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| | Help Error during assembling the HB
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Hello, I am assembling a Handy Board with Gred G. Martins Assembling instructions. But after step 6 the download of the file pcode_hb.s19 produces the following error: 'DLM: 6811 File Downloader with Intelligent EEPROM burn by Fred 'Martin portions (...) (27 years ago, 8-Sep-97, to lugnet.robotics.handyboard)
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| | Re: Help Error during assembling the HB
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There are a couple of versions of DLM out there. The one I have I have to type : dlm pcode_hb -ram -256 for it to work on my handyboard. I also have to use it from a DOS 6.x machine, on a Win95 machine it complains about memory errors which are very (...) (27 years ago, 8-Sep-97, to lugnet.robotics.handyboard)
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| | Re: DC adapter
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Hmm... As usual I opened my mouth only to change feet. Naturally, for my own reasons, I disabled zap mode on my board so I did not think about that. (...) -- ===...=== peter.harrison@cannock.ac.uk Cannock Chase Technical College (27 years ago, 8-Sep-97, to lugnet.robotics.handyboard)
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| | Re: DC adapter
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a regulated supply would be really nasty when you put the interface board in ZAP mode -- the supply would try to raise the level of the battery to 15v or whatever, and that would be bad. so unless you really know what you are doing, steer clear of (...) (27 years ago, 5-Sep-97, to lugnet.robotics.handyboard)
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| | Re: DC adapter
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(...) Isn't this a bit sweeping? Surely the problem is that a 12v regulated supply will not have enough headroom with a 9.6V battery. I use a 7.2V battery without problems (that I am aware of).It is not the regulation that is the actual problem but (...) (27 years ago, 5-Sep-97, to lugnet.robotics.handyboard)
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| | serial routines
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I was just curious with all the talk about serial routines if anyone has sucessfully attempted a wireless data link to the handyboard to the PC. It seems like if you had a fast enough wireless modem with a clean enough connection you should be able (...) (27 years ago, 5-Sep-97, to lugnet.robotics.handyboard)
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| | Re: Serial routines
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[Jeff Keyzer] spake unto the ether: [Re: my serialio.c and conio.c libraries] (...) This is good to hear...if there is anyone else out there using the routines, with either success or failure stories, please let me know. One design issue I wasn't (...) (27 years ago, 5-Sep-97, to lugnet.robotics.handyboard)
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| | Re: Serial routines
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(...) They're working great for me, no such problems. I can send/receive and decode characters into numbers very easily. I've got my HB hooked up to a 486 DX2/66 running Linux, using some simple C serial routines to communicate with the board. (...) (27 years ago, 5-Sep-97, to lugnet.robotics.handyboard)
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| | (no subject)
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I'm able to compile version 2.861 with Kent Farnsworth setup, but not ver 3.1 of the P-code. Has anybody been able to do this? I get a lot of phasing errors when I try. There is a problem with the current LCD initialization routine I would like to (...) (27 years ago, 4-Sep-97, to lugnet.robotics.handyboard)
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| | Re: Serial routines
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[Jodi Seaborn] spake unto the ether: (...) Hi Jodi, the serial input routines (i.e., from some other source to the Handy Board) do work, it's just that the I/O is polled, not interrupt-driven. Thus, unless the device sending characters sends them at (...) (27 years ago, 4-Sep-97, to lugnet.robotics.handyboard)
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| | Re: DC adapter
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Good question. Answer: DO NOT USE REGULATED ADAPTERS WITH THE HANDY BOARD. I will add this to the FAQ, because it is not obvious, but the HB power circuitry was designed explicitly for CHEAPO UNREGULATED WALL WARTS ONLY. sorry, Fred In your message (...) (27 years ago, 4-Sep-97, to lugnet.robotics.handyboard)
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| | DC adapter
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Hi all, Just another (hopefully unanswered) question about the DC adapter: Do the specifications stated in the FAQ (18 volts unconnected) also apply to _regulated_ adapters, or only to unregulated? I'm asking this because I just bought a new (...) (27 years ago, 4-Sep-97, to lugnet.robotics.handyboard)
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| | (no subject)
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I'm able to compile version 2.861 with Kent Farnsworth setup, but not ver 3.1 of the P-code. Has anybody been able to do this? I get a lot of phasing errors when I try. There is a problem with the current LCD initialization routine I would like to (...) (27 years ago, 4-Sep-97, to lugnet.robotics.handyboard)
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| | Re: Suppliers in Germany ?
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Hello, here is a list of suppliers in Germany. It's an Excel-sheet and I've attached it to this mail. I hope you can use this list. If you have any further questions you can send me an e-mail directly. Steffen. (27 years ago, 4-Sep-97, to lugnet.robotics.handyboard)
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| | Serial routines
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Has anyone used Richard Drushel's math and serial libraries with a real serial port? The HB seems to miss about every other character when I use any of the higher level functions. Thanks, Jodi Graf (27 years ago, 4-Sep-97, to lugnet.robotics.handyboard)
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| | (no subject)
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I have write a code for manipulate the LCD in the handy board. Because i can't use a battery backed RAM, i need to write in assembler. Well , i'm really read all the FAQ for LCD and for Handy board (including the apendix B for the 6270) .I'm using (...) (27 years ago, 3-Sep-97, to lugnet.robotics.handyboard)
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| | (no subject)
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German Pablo Gentile German Pablo Gentile Systems Engineer. Electronics Expert. (really??? ;>) ) ggentile@cvtci.com.ar (27 years ago, 3-Sep-97, to lugnet.robotics.handyboard)
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| | Re:
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(...) Check out Dave Chu's robotics and electronics page @ (URL) has schematics for what you are looking for! Hope this helps. Laz (27 years ago, 3-Sep-97, to lugnet.robotics.handyboard)
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| | Re: Pic board onto handyboard?
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(...) Hello Michael I might be able to help you out a bit! I think that the toy you are talking about is featured in the March 1996 issue of Electronics Now mag (cover page) It describes how to build a runabout Robot controlled by a Sony compatible (...) (27 years ago, 3-Sep-97, to lugnet.robotics.handyboard)
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| | motor drivers
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Hi all, I suppose that this is really a Mini Board quesiton, but it involves L293D motor drivers, so here goes. The Mini Board manual says that the MB accepts DC power supply of 6-36V. I was using power ranging from 25-32V to run one, and the L293Ds (...) (27 years ago, 3-Sep-97, to lugnet.robotics.handyboard)
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| | (no subject)
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I have a question to ask I want to use two 16V (maybe a bit more) motors and one 9V the question is To use either an Opto Darlington Isolator that my supervisor knows about, which uses the digital outputs where they are just switches or to cut the (...) (27 years ago, 3-Sep-97, to lugnet.robotics.handyboard)
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| | Pic board onto handyboard?
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Dear Handyboarders Some time ago I bought a toy that runs off 2 - 1.5 volt batteries. The controller board has a PIC on it, control of the toy was via a TV remote, and it ran two separate motors for the drive train. There is also an on/off switch. (...) (27 years ago, 3-Sep-97, to lugnet.robotics.handyboard)
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| | Re: IC version 3.1 -- FYI
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FYI IC3.1 is US$33.00 per copy (personal copy, download document), and US$20.00 with any assembled or unassembled kits. It is available in many different platforms. Patrick --00---...--- Low cost MIT Handyboard supplier and Official Distributor of (...) (27 years ago, 3-Sep-97, to lugnet.robotics.handyboard)
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| | Suppliers in Germany ?
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Hello, since the available HB parts-list only names part-suppliers form the US: does anyone have a list of suppliers (and article numbers) from Germany ? I would appriciate if it could be sent to the mailinglist (or directly to me). Thank you , (...) (27 years ago, 3-Sep-97, to lugnet.robotics.handyboard)
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| | HB IR transmit circuitry problem
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As I mentioned in the previous mail message my IR transmitter on the handy board oscillates @57kHz. I ordered the exact parts# form digikey as specified in the HB documentation and also did the math. The result should be a freg between 39 -40kHz. (...) (27 years ago, 3-Sep-97, to lugnet.robotics.handyboard)
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| | Re: HB IR transmit circuitry problem
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what value are you using for the R4 resistor? There was an incorrect value in some of the Handy Board documentation and it might not be fully expunged. Also, are you using a polypropylene capacitor for C6. -Fred -- This message was composed using (...) (27 years ago, 3-Sep-97, to lugnet.robotics.handyboard)
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| | (no subject)
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I have a question to ask I want to use two 16V (maybe a bit more) motors and one 9V the question is To use either an Opto Darlington Isolator that my supervisor knows about, which uses the digital outputs or to cut the trace close to the J13 and (...) (27 years ago, 31-Aug-97, to lugnet.robotics.handyboard)
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| | (no subject)
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It worked so thanks everybody It was the voltage it needed 12V Thanks again (27 years ago, 31-Aug-97, to lugnet.robotics.handyboard)
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| | Re: L293 Questions
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warm is normal, burn your fingers hot is not. jm (...) (27 years ago, 31-Aug-97, to lugnet.robotics.handyboard)
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| | Re: HB problem
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You need a 12V adapter and if both PWR and Batt are not OFF you are not in download mode. jm (...) should I > increase or decrease the voltage (...) (27 years ago, 31-Aug-97, to lugnet.robotics.handyboard)
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| | L293 Questions
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Hi all! Just for being sure: Is it normal that the L293Ds become warm when drawing ~0.5A for an extended period? Thanks, Jan (27 years ago, 31-Aug-97, to lugnet.robotics.handyboard)
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| | HB problems
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I have a problem: When I am trying to download the pcode_hb.s19 file a (...) I am using an adaptor providing 9V is that enough or should I increase or decrease the voltage When I provide the voltage on the HB pressing the STOP button the yellow (...) (27 years ago, 31-Aug-97, to lugnet.robotics.handyboard)
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| | Re: Download problems
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Usually, PC has two external serial ports (DB9 and DB25). The DB9 usually used by your mouse, and DB25 is connected to the external modem. The HB should be connected to DB25 in place of external modem, and it is usually configured as COM2. Another (...) (27 years ago, 31-Aug-97, to lugnet.robotics.handyboard)
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| | Re: Download problems
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Did you put the HB in download mode: power up while holding down the stop button? What box do you have? A Dell? I know of an issue with older Dell com ports. just guessin', jm (...) (27 years ago, 30-Aug-97, to lugnet.robotics.handyboard)
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| | Download problems
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Hello I just wanted to say that I have got the HB from Hong Kong two weeks ago but I didn't reply due to the fact that I had problems with my monitor Now that my computer works I am trying to see if the HB is working I have a problem: When I am (...) (27 years ago, 30-Aug-97, to lugnet.robotics.handyboard)
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| | HB IR transmit circuitry problem
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I just finished building my Handy Board and I was testing the IR transmit circuitry. I found that the oscillator was actually oscillating @ 57kHz instead of 39-41kHz. That makes it useless for now! I made sure to get the exact capacitor and resistor (...) (27 years ago, 30-Aug-97, to lugnet.robotics.handyboard)
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| | Re: IC version 3.1
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(...) Yes, the freeware MS-DOS/Windows tools have been known to have problems on some new/fast PCs. It all has to do with old serial drivers. Newton Labs stands behind the commercial product. I recommend that you try it. -Fred -- This message was (...) (27 years ago, 29-Aug-97, to lugnet.robotics.handyboard)
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| | IC version 3.1
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It has recently come to my attention that IC version 3.1 has been released. I have been using (actually struggling with) the earlier version that came with my purchase of an assembled Handyboard from Gleason Research. Does the new version work (...) (27 years ago, 29-Aug-97, to lugnet.robotics.handyboard)
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| | Re: Manipulate the LCD in assembler
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|
Folks, I gave it a little more thought, and had some coffee to wake me up. I remember now! Somehow I blew out the D0 line on my LCD and I had to use 4 bit mode from then on since the upper 4 addresses were still fine. I had forgotten that a long (...) (27 years ago, 28-Aug-97, to lugnet.robotics.handyboard)
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| | Re: Manipulate the LCD in assembler
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At 11:28 PM -0400 on 8/26/97, German Gentile wrote: Folks, Ok, I took a look at the code last night. I found simple errors like not initializing the stack, addressing variables in RAM chip when in single chip mode and forgetting to use # for (...) (27 years ago, 28-Aug-97, to lugnet.robotics.handyboard)
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| | RE: Size Conversions
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These sizes refer to the Unified Thread Standard. A 6-32 thread has 32 threads per inch and a nominal outer diameter of 0.138 inches. There are coarse (UNC) and fine (UNF) series (and some others that are less common), as follows: nom size major dia (...) (27 years ago, 27-Aug-97, to lugnet.robotics.handyboard)
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| | IC under NT
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(...) IC 3.1 for Windows 95/NT is written from the ground up as a 32-bit windows application, so the serial works fine under NT, regardless of the speed of your machine. If you want to try it out to see if it fixes your problem, here's a 7-day (...) (27 years ago, 27-Aug-97, to lugnet.robotics.handyboard)
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| | digital ins
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Hello again, I realized a solution to the amplified input problem that is simple and at least worth mentioning. A diode clamp (0-5V) does the job quite nicely, and is easy to build. I got the idea from Horowitz and Hill, "The Art of Electronics", (...) (27 years ago, 27-Aug-97, to lugnet.robotics.handyboard)
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| | Re: Help!!!! Handy Board Problem
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I am going to guess this is a software problem on the PC side. If you can boot your computer in DOS mode, try running IC then. Or find an older box :-(. Freeware DOS IC is known to have serial line comms bugs with some fast machines. NT can't be (...) (27 years ago, 27-Aug-97, to lugnet.robotics.handyboard)
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| | Size Conversions
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I apologize in advance as this question is completely of the list topics but I hope that somebody will have the answer. I am currently building a six legged walker using the Handyboard as the main CPU and using a modified Miniboard using the Servo16 (...) (27 years ago, 27-Aug-97, to lugnet.robotics.handyboard)
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| | Re: Microphone on a Handyboard
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If you need more than a +200 gain, try an LM358 in single supply mode and use +5v. These are fantastic op-amps and widely available (Digikey). jm (...) (27 years ago, 27-Aug-97, to lugnet.robotics.handyboard)
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| | Re: digital ins
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If you want to exaggerate the response, perhaps a LM339 +5v single supply comparator will do. Set up your circuit to go high(+5v) above your 2-3v range of operation. This solves all your input problems. Loads of manufactures make this thing. Data (...) (27 years ago, 27-Aug-97, to lugnet.robotics.handyboard)
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| | Microphone on a Handyboard
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(...) Assuming you've hooked the LM386's ground to ground and the + voltage to 5v, you should be set hooking the output of the LM386 to the analog input. Do not insert a capacitor in series, as might be shown for hooking up the LM386 to a speaker. (...) (27 years ago, 27-Aug-97, to lugnet.robotics.handyboard)
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| | microphone as a sound sensor?
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Hi all, has anyone interfaced a microphone to an analog input of the HB? I've amplified the signal with an op-amp (LM386) but can't figure how to integrate the (AC) signal into a usable voltage range for the HB. I don't think that just rectifying (...) (27 years ago, 27-Aug-97, to lugnet.robotics.handyboard)
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| | Manipulate the LCD in assembler
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I have write a code for manipulate the LCD in the handy board. Because i can't use a battery backed RAM, i need to write in assembler. Well , i'm really read all the FAQ for LCD and for Handy board (including the apendix B for the 6270) .I'm using (...) (27 years ago, 27-Aug-97, to lugnet.robotics.handyboard)
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| | Help!!!! Handy Board Problem
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Hi! I'm currently assembling the handy board, and i got to the stage where i have the bare minimum to run IC. The problem starts when I try to send commands from IC (ver 2.851) to the handy board (running v 2.81). About 85% of the time i get the (...) (27 years ago, 27-Aug-97, to lugnet.robotics.handyboard)
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| | 68HC11's inputs
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John, Thanks for the excerpt. Ouch. On first read, it looked like the 6811's input pin was beefier than I had originally thought. On my second reading, I realized that my hack probably is in fact outside the specs for the chip, so if you're trying (...) (27 years ago, 27-Aug-97, to lugnet.robotics.handyboard)
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| | Re: digital ins
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(...) From the pink book (rev 3): pp. 2-24,25 "2.4.3 Internal Circuitry - Digital Input-Only Pin ...When the pin current is increased to very high levels (typically more than 100mA, specified limit is 25mA), physical damage can result. [...] As (...) (27 years ago, 26-Aug-97, to lugnet.robotics.handyboard)
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| | Re: digital ins
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(...) ... (...) Chuck is right about the correct solutions. For a less correct solution, you can take advantage of the fact that HC parts (including the 6811) have built in voltage limiters that are only good for fractional milliamps (in some cases (...) (27 years ago, 26-Aug-97, to lugnet.robotics.handyboard)
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| | Re: digital ins
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(...) 5.12 volts (...) Yes. (...) 5.12 volts max, 0 volts minimum (...) The correct solution to your problem is to use an op-amp signal conditioner, possibly feeding into a schmidt trigger if you need some hysteresis. (sp?) You can also rig a zener (...) (27 years ago, 26-Aug-97, to lugnet.robotics.handyboard)
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| | Adding to the data bus
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After looking at the addressing scheme on the handyboard and determining it is possible to add a number of more outputs and inputs by extending the data lines to another board and using the free lines comming from the 74hc138. I built a robot arm (...) (27 years ago, 26-Aug-97, to lugnet.robotics.handyboard)
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| | digital ins
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Hi all, At what voltage on the digital ins does one risk damaging the HB? I want to feed an amplified signal to the digital ins on my HB to exaggerate the response of a photosensor in the 2-3V range of its operation. Unfortunately, this means that (...) (27 years ago, 26-Aug-97, to lugnet.robotics.handyboard)
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| | IC memory usage
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(...) IC 3.1's pcode is structured the same way. -- Randy ---...--- Randy Sargent Newton Research Labs Senior Design Engineer Robotic Systems and Software rsargent@newtonlabs.com (URL) (27 years ago, 26-Aug-97, to lugnet.robotics.handyboard)
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| | Re: free memory
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(...) Hi, I've just been working on the p-code interpreter. I've been working with the Version 2.861, not the HandyBoard version. But I did a "diff" and there doesn't seem to be much difference. At any rate, here's the map I made for Version 2.861: (...) (27 years ago, 26-Aug-97, to lugnet.robotics.handyboard)
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| | Re: free memory
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I don't remember exactly, but the memory map for IC is something like: pcode itself: 8K used user compiled code + global program data: 16K available user process stacks and runtime locals: 8K available ---...--- 32K total memory this is ball park. (...) (27 years ago, 26-Aug-97, to lugnet.robotics.handyboard)
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| | (no subject)
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No, there is not. We built printf to the LCD as a special case. Sorry! -Fred In your message you said: (...) (27 years ago, 25-Aug-97, to lugnet.robotics.handyboard)
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| | (no subject)
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Hello, Does anyone know how I can get a sprintf function with IC ? Since there is a printf function, the code must be somewhere in the system. (Unfortunately, the printf outputs only to the LCD !). Thanks ! Laurent VARTANIAN. (27 years ago, 25-Aug-97, to lugnet.robotics.handyboard)
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| | free memory
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Ther is a way to tell how much free RAM I have on the HB with IC? or how much memory does pcode take? regards stefano nardone || || tel.: +39 81 7142222 (work) | fax: +39 81 645130 || e-mail: stefanon@promos.it | stefanon@synapsis.it || web: (URL) (27 years ago, 25-Aug-97, to lugnet.robotics.handyboard)
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