 | | RE: Is there a device that...?
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In C you can use the functions outport and inport, and the paralell port has TTL levels (5 V.). Bye Jose Luis ----- Original Message ----- From: Mar, Ericson <ericson.mar@csfb.com> To: 'Jaron' <j.paludanus@cable.a2000.nl>; Peter <eacmen@att.net>; (...) (25 years ago, 13-Sep-99, to lugnet.robotics.handyboard)
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| | Re: Is there a device that...?
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Its Easy to do in pascal as well as C++ using the PORT[address] command. Ive used It before to control external devices. A normal parralell pot has 8 outputs D0 - 7 and a few lines that you can use as inputs (not sure which ones though?) The port (...) (25 years ago, 13-Sep-99, to lugnet.robotics.handyboard)
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| | RE: Is there a device that...?
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Yeah! You're right! I've seen it done in Basic so I would assume C++ has a function. But, I don't remeber wether they are at 12V or 5V. (?) (...) (25 years ago, 13-Sep-99, to lugnet.robotics.handyboard)
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| | Re: Is there a device that...?
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Isn't your parallel port itself what you want? I always understood that it could be reached (coded) quite easily? That should give you 7 channels! ----- Original Message ----- From: Peter <eacmen@att.net> To: Handy Board Mailing List (...) (25 years ago, 13-Sep-99, to lugnet.robotics.handyboard)
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| | Re: Four Wheel Base
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I disassembled quite some (lego) models, I also use differential steering. I position the wheels like most models on a square (so width and length of wheel base is equal). Funny thing about a square is that a circle can be drawn from the middle (...) (25 years ago, 13-Sep-99, to lugnet.robotics.handyboard)
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| | Re: ------( Terms of use for lugnet.com )------
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Sorry about this mess below -- this only applies to people reading the HB list via the LUGNET server. The message below was auto-posted by the server when the new newsgroup (which is being gatewayed with the mailing list) was created. I forgot to (...) (25 years ago, 13-Sep-99, to lugnet.robotics.handyboard)
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| | Re: ------( Welcome to lugnet.robotics.handyboard )------
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(This was a special message posted by the LUGNET server to the hb newsgroup, and subsequently echoed back out to the hb mailing list. The gateway preparations are about 98% complete. Still a few loose ends to nail down.) --Todd (...) (25 years ago, 13-Sep-99, to lugnet.robotics.handyboard)
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| | Four Wheel Base
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Hi, Has someone tried a four wheel robot base using diferential traction?, I'm making this question because I'm not sure of the tree wheel configuration, in the last base that I made, the caster wheel has ever maked some bad influence in the robot (...) (25 years ago, 12-Sep-99, to lugnet.robotics.handyboard)
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| | Re: Is there a device that...?
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Peter, There are quite a few different products such as that. The two I use are: PicoScope & PicoLogger - (URL) - By TiePie Engineering (URL) Is there a device that connects to a computers COM or Parallel port that (...) Charles Hacker Lecturer in (...) (25 years ago, 12-Sep-99, to lugnet.robotics.handyboard)
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| | Debugging the memory circuit
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We've assembled two handy boards up to the point where we are testing the downloader. In section 6.0.6 of the assembly guide, it says "If the download process appears to go correctly, but then the Handy Board does not boot with the Interactive C (...) (25 years ago, 12-Sep-99, to lugnet.robotics.handyboard)
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| | ------( Terms of use for lugnet.com )------
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TERMS OF USE FOR LUGNET.COM OVERVIEW AND DEFINITIONS lugnet.com ("LUGNET") is a privately owned Internet site designed and run primarily for the benefit of those who enjoy building with, discussing, collecting, buying & selling, trading, and (...) (25 years ago, 12-Sep-99, to lugnet.robotics.handyboard)
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| | ------( Welcome to lugnet.robotics.handyboard )------
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Welcome to lugnet.robotics.handyboard, a LUGNET discussion group. CHARTER/PURPOSE: lugnet.robotics.handyboard (group): Focused discussion group for the Handy Board device: distribution of information of any sort about obtaining, debugging, or using (...) (25 years ago, 12-Sep-99, to lugnet.robotics.handyboard)
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| | Re: Is there a device that...?
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You can try some IO cards. I don't know of any that connect to the ports but I know most can plug into ISA/PCI ports and have programmable I/O ports taht can be used by various differnt languages. I remeber somthing in the lines of "PC Systems (...) (25 years ago, 11-Sep-99, to lugnet.robotics.handyboard)
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| | Is there a device that...?
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Is there a device that connects to a computers COM or Parallel port that can measure voltage, on different channels. All I need is a digital input like the HB. So if there is a signal it would report true and if there is no signal then it would (...) (25 years ago, 11-Sep-99, to lugnet.robotics.handyboard)
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| | Re: RF Module
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Hi, Sorry I didn't get back to you yesterday. It sounds like you need to tune your radio modules. It could be your transmitter, receiver or both. If you don't have a function generator to create an input square wave for testing, you could try to get (...) (25 years ago, 10-Sep-99, to lugnet.robotics.handyboard)
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| | RE: Please help me unsubscribe!
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I just don't understand why anybody would *want* to get off the handyboard list... (...) (25 years ago, 9-Sep-99, to lugnet.robotics.handyboard)
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| | Conveting ASM files to ICB
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Hello, I have not been able to successfully convert ASM files to the ICB format to use with Interactive C. As a test I tried to convert servo_a5.icb to servo_a5.asm, this is what I got. The file cannot be loaded into IC. Any suggestions? script (...) (25 years ago, 9-Sep-99, to lugnet.robotics.handyboard)
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| | LMD18200
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is anyone familiar with this driver chip National Semi LMD18200 H BRIDGE up to 3A continuous 6A peak(200ns) supply voltage from 12-55V QUESTION does this mean i can't use a 9.6V battery pack for motors? is this a plug and play? (25 years ago, 9-Sep-99, to lugnet.robotics.handyboard)
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| | hb
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Hi all!! Have someone the eagle files *.sch and *.brd for the hb? Thanks markus (25 years ago, 9-Sep-99, to lugnet.robotics.handyboard)
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| | Re: LMD18200
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(...) Correct, it has a minimum voltage for correct operation. You can use a separate battery pack with a higher voltage and simply connect the grounds to your 9.6V battery. This chip is NOT a 293 replacement. You would have to build a small circuit (...) (25 years ago, 9-Sep-99, to lugnet.robotics.handyboard)
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| | Re: RF Module
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Hi. Have you tried attaching the data out (middle pin on three pin header) from the encoder board to the data in (also middle pin on three pin header) on the decoder with a common ground to each? This will allow you to test the encoder/decoder (...) (25 years ago, 9-Sep-99, to lugnet.robotics.handyboard)
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| | Re: Please help me unsubscribe!
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Mark, I'm afraid that once you get on the Handy Board mailing list, the only way you can get off is to build a Handy Board, and then use a secret code to get disconnected. You can also sign up for the 6.270 class at MIT, get a grade of B or better, (...) (25 years ago, 9-Sep-99, to lugnet.robotics.handyboard)
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| | RF Module
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-- MIME ATTACHMENTS DISCARDED: 1. Content-Type: text/plain; charset="ks_c_5601-1987" Content-Transfer-Encoding: base64 Content-Length: 1007 2. Content-Type: text/html; charset="ks_c_5601-1987" Content-Transfer-Encoding: base64 Content-Length: 1922 (25 years ago, 9-Sep-99, to lugnet.robotics.handyboard)
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| | Please help me unsubscribe!
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Hello everybody, When I lent my email account to a friend a few months back he subscribed me to the handy board mailing list. Could somebody please help me to remove my email address from this mailing list as I have no idea how to. Regards, Mark (25 years ago, 9-Sep-99, to lugnet.robotics.handyboard)
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| | Re: Please help me unsubscribe!
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(...) Gary, you must have had a GOOD day. Enjoyed the humour. Mike (25 years ago, 9-Sep-99, to lugnet.robotics.handyboard)
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| | RE: VOLTAGE AND CURRENT
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Greetings, My buddies and I encountered a similar problem with the motor drivers. The actual specs on a single "Stock" motor driver is .5A . We needed a a driver to handle at least 1A, so we got the TI motor drivers. We found that stacking 2 TI (...) (25 years ago, 9-Sep-99, to lugnet.robotics.handyboard)
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| | Re: VOLTAGE AND CURRENT
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the car will almost undoubtedly fry the motor driver on the HB, and having it on the same power will probably generate enough noise to occasionally reset the HB. best bet would be to have the car use its own power and h-bridges, with the control (...) (25 years ago, 8-Sep-99, to lugnet.robotics.handyboard)
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| | Re: VOLTAGE AND CURRENT
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First of all - get rid of the CAPS LOCK!!! Second of all, if your RC Car draws a Max Current of 3.5 Amps then you'll blow the motor drivers on the handyboard since they're only spec'd to provide 1 A. If the RC car starts asking for more current then (...) (25 years ago, 8-Sep-99, to lugnet.robotics.handyboard)
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| | Re: Error at address 0x0000
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This was the case for the error that I was getting. I switched to a slower machine and things worked after that. -Jake ---...--- Forwarded by Jacob Levirne/Trilogy on 09/08/1999 03:57 PM ---...--- "Dvorak Viktor" <dvorakv@cesnet.cz> on 08/28/1999 (...) (25 years ago, 8-Sep-99, to lugnet.robotics.handyboard)
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| | Error at address 0x0000
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Hi, I saw that some else also had this error when trying to download to the board in section 6 of the manual. I am also getting this error. I have tried replacing the memory chip, the address hold chip, and the NAND gates. None of this has helped. I (...) (25 years ago, 8-Sep-99, to lugnet.robotics.handyboard)
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| | VOLTAGE AND CURRENT
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SIMPLE QUESTION TO ANYBODY: I'M PLANNING ON INTERFACING THE HANDY BOARD WITH AN R/C CAR. NOW THE MOTORS OF THE R/C CAR DRAW 1 AMP CONTINUOUSLY, AND A PEAK CURRENT OF 3.5 AMPS. THE R/C CAR USES A 9.6 VOLT BATTERY. NOW , ACCORDING TO HANDYBOARD (...) (25 years ago, 8-Sep-99, to lugnet.robotics.handyboard)
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| | Robot sold
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Hello, The completed and running robot that I had listed here previously has been sold. Thank you all for your interest! Bob Kelly (25 years ago, 8-Sep-99, to lugnet.robotics.handyboard)
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| | DIY expansion board
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Hi all, I want to add some extra analogue ports and some digital ports to my handy board. I have looked at the circuit schematics for the expansion board and worked out what I need to do. I don't want to buy an expansion board as I don't need the (...) (25 years ago, 8-Sep-99, to lugnet.robotics.handyboard)
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| | Re: bad GP2D02 link
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(URL) Message----- From: Stephan Adelsberger <astephan@dec1.wi-in...-essen.de> To: Handyboard list <handyboard@media.mit.edu> Date: Tuesday, September 07, 1999 4:06 PM Subject: bad GP2D02 link (...) (25 years ago, 8-Sep-99, to lugnet.robotics.handyboard)
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| | RE: A good toy to hack for the HB?--TIA
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(URL) is from Damark, $60 for the same tank. (If the URL doesn't work go to www.damark.com and search for 'tank') --Chuck McManis (...) (25 years ago, 7-Sep-99, to lugnet.robotics.handyboard)
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| | Handy Board help page
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Check out this link... (URL) (25 years ago, 7-Sep-99, to lugnet.robotics.handyboard)
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| | RE: Parts List
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I believe The Robot Store sells the kit for $170...but not including the Expansion board. Check the HB site for the site. (...) (25 years ago, 7-Sep-99, to lugnet.robotics.handyboard)
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| | bad GP2D02 link
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What's wrong with Barry Brouillette GP2D02 Home page?? The link: (URL) the main Handybord Page won't work. I get an error message: employees is invalid. Has anyone the correct link or saved the pages&icb local? thank you (25 years ago, 7-Sep-99, to lugnet.robotics.handyboard)
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| | exp.bord analog routed trough 5&6?
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Unfortunately I ruined my analog ports 0-3. Is it posible to route the expansionboard analog ports through port 5&6 of the handyboard instead of 0&1?? What do I have to do?? thank you Stephan (25 years ago, 7-Sep-99, to lugnet.robotics.handyboard)
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| | A good toy to hack for the HB?--TIA
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Hello all, The school year's starting and I need to commence my annual science project. I wanted a good RC car to hack. The LEGOs aren't sufficient. I don't need speed at all, actually I'd rather it be slow but I can always gear it down. But I would (...) (25 years ago, 6-Sep-99, to lugnet.robotics.handyboard)
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| | RE: Use of GP2DO2
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The problem could be in the power circuitry. Are the motors powered from a separate supply ? You could try placing some capacitors between the sensor's power connectors. Ronald -----Original Message----- From: Javaid Iqbal (...) (25 years ago, 6-Sep-99, to lugnet.robotics.handyboard)
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| | Use of GP2DO2
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Hi all, I am using two GP2DO2 on Rug Warrior. Sensors are giving me very stable reading when motors are not running, but when motors are running the readings start jumping around. I am running the motors but the robot is static as I have placed it (...) (25 years ago, 6-Sep-99, to lugnet.robotics.handyboard)
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| | Thank you
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Turns out I just needed a common ground between servos and HB Thanx all! :) Alex (25 years ago, 5-Sep-99, to lugnet.robotics.handyboard)
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| | Re: servo problem increased
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Alex, My servos shutters when I first hooked them up but it was because the values were out of range. My servos work well in a range of 700 to 3800. Bye, Terry-----Original Message----- From: Alex Stewart <robotman5@hotmail.com> To: (...) (25 years ago, 5-Sep-99, to lugnet.robotics.handyboard)
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| | Re: Parts List
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I have just helped 12 people build up the handy board with expansion board at a cost of 165 each. But I live in the Heart of Silicon Valley. I was able to get board and all but five components locally. Those were the 68HC11, LCD, 470 cap, inductor (...) (25 years ago, 5-Sep-99, to lugnet.robotics.handyboard)
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| | servo problem increased
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Me again Now when I give servo_a5 or a7_init(1); the other servo shutters and nothing happens , when you unhook the sevo your not trying to drive the one you are kicks up but you can olny get it in varying speeds in one direction. Is it possible (...) (25 years ago, 4-Sep-99, to lugnet.robotics.handyboard)
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| | Re: Parts List
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I should have phrased it better. I am a third year electrical engineering student and am trying to teach a class of twenty High school kids some basic electrical work in an after school project. I wanted them to get the experience of working with (...) (25 years ago, 4-Sep-99, to lugnet.robotics.handyboard)
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| | Servo Problem! ???
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Hi All The talrik bot running of a HB is doing serverly wierd things. I'vew tested these servo's on a old RC Reciver and they work fine , and my handy board can drive other servo s fine(not hacked thoe) Problem is when I give servo_a7_init(1); the (...) (25 years ago, 4-Sep-99, to lugnet.robotics.handyboard)
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| | Re: Parts List
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It would be cheaper to buy it in kit form. If you try to collect the parts it may wind up more expesive due to shipping...depending on how n\many places you gotta go to...and also, availability, hunting the parts down, etc. This method is the worst. (...) (25 years ago, 4-Sep-99, to lugnet.robotics.handyboard)
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| | Parts List
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Do any of you have a more informative parts list? (Or did I miss it on the ftp site?) I am looking at buying the gear to build 25 handyboards for a High school project and need to find out if it would be cheaper to buy/ have the parts donated or (...) (25 years ago, 4-Sep-99, to lugnet.robotics.handyboard)
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| | Re: Linux for the HandyBoard
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Where are you located? I have a bunch of 486 Digitals that I am trying to get rid of. If you are in the boston area you could come by and get a 486 and a 14" monitor for 40 bucks. Or you could go to the MIT flea market and get about the same thing (...) (25 years ago, 3-Sep-99, to lugnet.robotics.handyboard)
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| | RE: SOLDER
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Hi, I tend to use 22 SWG multi core solder for all my soldering jobs, and find it works for me. Russ.. -----Original Message----- From: Paul DaCosta [mailto:germano@voicenet.com] Sent: Friday, September 03, 1999 2:01 PM To: Handyboard Subject: (...) (25 years ago, 3-Sep-99, to lugnet.robotics.handyboard)
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| | RE: Linux for the HandyBoard
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thanks I maily wanted it for building a cheap, viable Linux platform without having to delve into a somewhat-costly PC/104 board or the like... does anyone know of a cheap pc/104 or other small 486-based board available? thanks, --phil Phil: Check (...) (25 years ago, 3-Sep-99, to lugnet.robotics.handyboard)
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| | SOLDER
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WHAT'S THE BEST "SIZE" SOLDER TO USE WHEN SOLDERING A 28 GAUGE WIRE (MOTORS AND SENSORS) TO A MALE PIN! (25 years ago, 3-Sep-99, to lugnet.robotics.handyboard)
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| | Any have a BS11 there willing to part with?
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Hi I know this is'nt a HB ques , but , Does anyone have a BS11 that theyed be willing to part with , or know somewere they can be uptained relitvely CHEAP Thanx -- Alex (25 years ago, 2-Sep-99, to lugnet.robotics.handyboard)
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| | Re: Linux for the HandyBoard
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A 486 Board + 486 + 4Meg of ram + 100 Meg drive + keyboard should cost around $20. Or free if you go dig in the right trash ;^). I don't know where you are but around here (San Francisco Bay area) shops like Weirdstuff ((URL) are selling used (...) (25 years ago, 2-Sep-99, to lugnet.robotics.handyboard)
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| | 2 IN 1
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(...) (25 years ago, 2-Sep-99, to lugnet.robotics.handyboard)
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| | Re: Linux for the HandyBoard
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thanks I maily wanted it for building a cheap, viable Linux platform without having to delve into a somewhat-costly PC/104 board or the like... does anyone know of a cheap pc/104 or other small 486-based board available? thanks, --phil -----Original (...) (25 years ago, 2-Sep-99, to lugnet.robotics.handyboard)
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| | Re: Linux for the HandyBoard
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No there is not. --Chuck (...) (25 years ago, 2-Sep-99, to lugnet.robotics.handyboard)
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| | Re: Linux for the HandyBoard
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Phil <thehahns@netwurx.net> moved upon the face of the 'Net and spake thusly: (...) The HB is not within an order of magnitude of having enough memory, and is lacking other hardware needed for virtual memory. There is a project called ELKS (...) (25 years ago, 2-Sep-99, to lugnet.robotics.handyboard)
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| | Re: Linux for the HandyBoard
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(...) Only way I can figure is to talk to the Linux uC project people at: (URL) they don't have a working version for the 68HC11. The thing about a microcontroller is that it's so different from an intel or alpha- based microprocessor (really any (...) (25 years ago, 2-Sep-99, to lugnet.robotics.handyboard)
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| | COMPLETED ROBOT FOR SALE
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COMPLETED ROBOT NEEDS GOOD HOME: $600.00 or best offer. (Spayed/neutered and has all its shots) I HAVE PHOTOS AVAILABLE VIA E-MAIL (OFF LIST) IF INTERESTED.... Completed, fully assembled robot for sale that incorporates the following components: 1 (...) (25 years ago, 1-Sep-99, to lugnet.robotics.handyboard)
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| | Linux for the HandyBoard
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Friends- Is there any way to get a Linux kernel onto the HB? -phil (25 years ago, 1-Sep-99, to lugnet.robotics.handyboard)
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| | RE: PCB Design tools?
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I searched the net for the best free PCB design software about eight months ago, someone from this list recommended Eagle, it turned out to be the best, very easy to use and quit powerful. It would definitely be worth your time to check it out, the (...) (25 years ago, 1-Sep-99, to lugnet.robotics.handyboard)
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| | Re: "Error Synchronizing with the board" message
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Hi, I had such a problem with another contollerboard. First the download was successful. The a started IC and it runs well. Suddenly the same message ("Error Synchronizing with the board") was displayed on the monitor. My problem was a loose (...) (25 years ago, 31-Aug-99, to lugnet.robotics.handyboard)
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| | Re: EE RF question
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Yes, that is what I'm trying to do. I think that this would eliminate interferance. Though the price is tethered operation. I guess it doesn't really have to be a coax. It can just be an RCA A/V cable right? Or how about a single wire! ---...--- (...) (25 years ago, 4-Aug-99, to lugnet.robotics.handyboard)
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| | Re: Fischer Technik parts
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Yup, I've boughten from Timberdoodle, and I believe their prices are a bit cheaper than most places, and yeah their service is better than most. --phil -----Original Message----- From: Mihalka, Michael <MihalkaM@marshallcenter.org> To: (...) (25 years ago, 4-Aug-99, to lugnet.robotics.handyboard)
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| | Re: EE RF question
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Pherd, It sounds as though he is planning on patching the output of a RF transmitter to the input of a RF receiver. 73's, Jose -----Original Message----- From: FThompson9@aol.com <FThompson9@aol.com> To: handyboard@media.mit.edu (...) (25 years ago, 4-Aug-99, to lugnet.robotics.handyboard)
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| | Re: IR sensors
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To blink LEDs at 40khz, you could try using the 555 timer. Radio Shack carries the 555 timer chip, a little booklet explaining how to use it, and any external components you need. In addition to the 555 chip, you'll just need three resistors and a (...) (25 years ago, 4-Aug-99, to lugnet.robotics.handyboard)
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| | Re: IR sensors
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I've been using the Miniboard to send and receive IR messages among other things. I find that the board is right on the edges of being fast enough to generate the 40KHz carrier and thus, I don't use it that way. Rather, I use the Miniboard to (...) (25 years ago, 3-Aug-99, to lugnet.robotics.handyboard)
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| | Re: EE RF question
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(...) I'm not to clear on what you are describing here. Generally speaking I would say yes, you can slap a piece of coax in without too much loss of function. But you really need to know what type of antenna your feeding, the radio's frequency, the (...) (25 years ago, 3-Aug-99, to lugnet.robotics.handyboard)
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| | RE: Fischer Technik parts
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Different places depending on where you live. If you live in the US, one place where you can buy many sets is www.timberdoodle.com (a home schooling site but extremely nice people). Otherwise try the mailorder parts service at www.knobloch-gmbh.de. (...) (25 years ago, 3-Aug-99, to lugnet.robotics.handyboard)
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| | Re: Fischer Technik parts
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(...) I have several of the sensor and walking robot kits for sale (unopened... brand new.. etc). They are identical to the ones you see at www.RobotStore.com only with a different box design. If you are interested, please contact me and maybe we (...) (25 years ago, 3-Aug-99, to lugnet.robotics.handyboard)
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| | New GCC-HC11 Compiler Patch (Aug 3, 1999)
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Announcing the latest patch to the gcc-2.8.1 compiler to add an HC11 compile target. The latest patches were submitted to me by Dean Huxley. I finished incorporating his fixes and the readme changes this morning at 1am. Changes include Pragma fixes (...) (25 years ago, 3-Aug-99, to lugnet.robotics.handyboard)
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| | Fischer Technik parts
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Where would one purchase Fischer Technik parts? (25 years ago, 3-Aug-99, to lugnet.robotics.handyboard)
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| | IR sensors
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I have both a miniboard and a Handy board. I have recently purchased some Sharp 40mhz IR detectors to use with these boards. I have very little knowledge of electronics and don't know how to flash the IR LED at a rate that the detectors will need. (...) (25 years ago, 3-Aug-99, to lugnet.robotics.handyboard)
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| | EE RF question
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Hi! If you have an RF Transmitter and Reciever with Antennas, can you detach the antennas and just connect a co-ax cable between them? I'm guessing this would reduce the noise and interferance to a minumum. Is this right? ---...--- ericson mar (...) (25 years ago, 3-Aug-99, to lugnet.robotics.handyboard)
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| | Brand New Gleason Research Handyboard For Sale
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I've just bought a new handyboard, and realized that i'm way over my head trying to build a robot. All i've done so far is perform some software tests to ensure the the handy board & the expeansion board work. I've got one brand new Gleason Research (...) (25 years ago, 2-Aug-99, to lugnet.robotics.handyboard)
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| | Vision on HB
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Anyone tried using a CCD camera vision system on the handy board ? If so how did you go about doing it , hardware , software, wise?Sample code would be great:) Thanx, Alex Stewart (25 years ago, 2-Aug-99, to lugnet.robotics.handyboard)
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| | IC code site
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Update: Things have been really slow so far. I've added the two functions that I've gotten off the list to the archive. I'll be entering code fragments from "Mobile Robots" later in the week. If there are other books out there with IC or easily (...) (25 years ago, 2-Aug-99, to lugnet.robotics.handyboard)
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| | Any one have experence in robotic vision?
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This really isnt a HB question but >>>> Have been reading a few vision books , thay all have formaulas and examples etc but none of them help you with actual code , my actual question is does any one have some example vision code in C or anything? (25 years ago, 2-Aug-99, to lugnet.robotics.handyboard)
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| | Noise on the handy board
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Fred and handyboard experts, I have assembled two handyboards and I am now helping 15 other people build theirs at San Jose State University. I found a problem on the first two I build that I belive causes the Sharp GP2D02 not to work. The school (...) (25 years ago, 31-Jul-99, to lugnet.robotics.handyboard)
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| | Re: Millisecond timing
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(...) See the Polaroid sonar code (from the HB web site) for an example of how to measure timing signals on the TIC3 channel. You initialize with: bit_set( 0x1009, 0x30 ); /* ddrd */ bit_set( 0x1021, 1 ); /* at tctl2, */ bit_clear( 0x1021, 2 ); /* (...) (25 years ago, 30-Jul-99, to lugnet.robotics.handyboard)
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| | Re: Millisecond timing
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The clock speed on the Handy Board runs at 2 Mhz, which is plenty fast enough for most things IF you run the right code. IC, used in its C implementation is too slow to catch anything at 1 ms reliably. However, there are a few simple work arounds. (...) (25 years ago, 30-Jul-99, to lugnet.robotics.handyboard)
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| | Millisecond timing
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I recently bought a Handy Board to use in acquiring time measurements varying by one millisecond. The Handy Board has a clock speed of 2kHz, therefore it should be able to measure down to one half millisecond. What I have found however is that the (...) (25 years ago, 30-Jul-99, to lugnet.robotics.handyboard)
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| | Can't bootstrap! & IR reflective sensors help
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After assembling my own handyboard (ugh), and everything was (supposedly) solded OK, i tried to put the handyboard in bootstrap mode. But i get no results... i tested the stop button and it works fine (i compared with the OTHER handyboard i had)... (...) (25 years ago, 30-Jul-99, to lugnet.robotics.handyboard)
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| | Re: Reading Serial Port
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David Boosalis <dboosalis@mail.arc.nasa.gov> moved upon the face of the 'Net and spake thusly: (...) "Use The Source, Luke". Check the source code of the downloader in the Unix port of Interactive C. (...) I think you want 9600, not 921kbaud (unless (...) (25 years ago, 29-Jul-99, to lugnet.robotics.handyboard)
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| | Re: Dead handyboard?
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(...) Antistatic bags are conductive, right? You might have shorted the power to the ground via the bag itself, thereby killing your battery. Once a NiCad cell shorts, then it will can a large amount of current from a charger, possibly killing off a (...) (25 years ago, 29-Jul-99, to lugnet.robotics.handyboard)
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| | Dead handyboard?
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My hb was working fine, I took it on a trip in an antistatic bag. When I took it out of the bag, the battery was completely drained. But as soon as I started to charge it, one of the resistors burned up. So I tried charging it via the interface (...) (25 years ago, 29-Jul-99, to lugnet.robotics.handyboard)
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| | Sharp GP2D12
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Hi all, I want to use the GP2D12 distance measuring sensor with my handyboard. Does anybody know the pinout details for the three pins? Thanks, Thomas (25 years ago, 29-Jul-99, to lugnet.robotics.handyboard)
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| | Sharp GP2D12
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(25 years ago, 29-Jul-99, to lugnet.robotics.handyboard)
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| | Re: R: Reading Serial Port
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also remember that at 9600 baud or higher, you may not see the flashing of the serial LEDs. try setting the baud rate to 300 or even 110 if you're doing visual-flash debugging. fred In your message you said: (...) (25 years ago, 29-Jul-99, to lugnet.robotics.handyboard)
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| | Re: Reading Serial Port
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It isn't hanging, it's a blocking read until it recieves some specified number of characters. You can use a non blocking read by specifying O_NONBLOCK, in which case read() will return immediately. The Linux serial programming HOWTO is very good, I (...) (25 years ago, 29-Jul-99, to lugnet.robotics.handyboard)
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| | R: Reading Serial Port
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You can try Java comm API, under linux too. (If you want to use java ... :-) Stefano ---...--- | Da: David Boosalis <dboosalis@mail.arc.nasa.gov> | A: handyboard mailist <handyboard@media.mit.edu> | Oggetto: Reading Serial Port | Data: 29 July 1999 (...) (25 years ago, 29-Jul-99, to lugnet.robotics.handyboard)
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| | Reading Serial Port
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This is not really a HB question, but I am hoping someone here has experience in it anyway. My question is in how do you read the Serial port under Linux. The Linux HOWTO's give an example, which I show below. What happens is that it hangs on the (...) (25 years ago, 29-Jul-99, to lugnet.robotics.handyboard)
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| | Serial line output
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Just started to learn how to use my new HB. In going through the IC manual I could not find any routines for writing to the serial port. Does anybody have a good example on how to write "hello world" to the serial port, and have the attached (...) (25 years ago, 29-Jul-99, to lugnet.robotics.handyboard)
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| | Re: submersible, ballast, depth sensor
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Hi all, Seeing notes about the sub and all, I thought I shall share some info. I know this list is purely for HB enthusiasts and forgive me if this does not interest you. The reason I got involved in HB was when I planned to use HB for a Aerial (...) (25 years ago, 28-Jul-99, to lugnet.robotics.handyboard)
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| | Linking HB with UART
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Recently , i am trying to use HB as the controller for a Remote control project . However , i have yet to figure out how to make the HB take in a 8 bit digital signal from the UART?Is there any circuit require to execute the describe function? i am (...) (25 years ago, 28-Jul-99, to lugnet.robotics.handyboard)
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| | RE: submersible, ballast, depth sensor
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There is a whole community of Radio Control submariners who have extensive experience that you could make use of. If you want it to act like a true submarine with diving planes etc. you should definitely use their knowledge base. It is much harder (...) (25 years ago, 28-Jul-99, to lugnet.robotics.handyboard)
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| | Re: submersible, ballast, depth sensor
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(...) Yes. You missed the "with a hole at the bottom connected to the water" which means that water comes in as you move the air to the reservoir. And this means reducing the effective volume of the submersible but keeping its weight. Just the same (...) (25 years ago, 28-Jul-99, to lugnet.robotics.handyboard)
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