 | | mail bounces
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dear all, please be aware that whenever you post a message to the list, you will get some bounces back. this does not mean your message didn't go through. instead, it means that there were a few bad addresses on the list. there are always at least (...) (28 years ago, 19-Mar-97, to lugnet.robotics.handyboard)
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| | Re:system time
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Hi Joe, The mail bounced back to me. I am resending the mail again. -Pandit ---...--- (...) (28 years ago, 19-Mar-97, to lugnet.robotics.handyboard)
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| | External power for motors
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Hello, Y'all! I was wondering if anyone has done this: Cut the trace leading to the H.B. Motor driver chips, and then re-wired it so that you can use external power supply/ I know I saw it somewhere on the 'web... Could anyone give me a URL or (...) (28 years ago, 18-Mar-97, to lugnet.robotics.handyboard)
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| | Re: IR collision avoidance
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(...) The Radio Shack LEDs should work fine. The trick is that these things are very sensitive to intensity, duty cycle, and frequency stability. To modify intensity change the amount of current flowing through the LED (lower resistor value == more (...) (28 years ago, 18-Mar-97, to lugnet.robotics.handyboard)
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| | Re: IR collision avoidance
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(...) could u please tell me where u bought the infrared LED's? The one that i bought from radio shack (part no.276 143) is giving a maximum range of 7.5 inches and i badly need to sense atleast 1 foot. thanks Sriram We didn't want that (...) (28 years ago, 18-Mar-97, to lugnet.robotics.handyboard)
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| | mini boards
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Douglas Electronics also sells blank Mini Board PCBs. See the "get your hands on a handy board" link for contact info for Douglsa. -Fred (28 years ago, 18-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Re:Re:system time
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Hi Joe, From the code below I see that there are a few things that I see that may be a bit incorrect. In the main() function, I see that there is a statement "while(1);". This statement is a complete C statement which will loop forever with out any (...) (28 years ago, 18-Mar-97, to lugnet.robotics.handyboard)
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| | Re:Re:system time
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I've posted the wrong code. Try this one: void time(int d) {d+=1;} void main() {int d; while(1); start_process(time(d), 1, 50); } Joe (28 years ago, 18-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Re:system time
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Pandit, I thought that I would post it to the mailing list.It seems to work fine on its own but I had problems using it in one program.If I reconfigure a bit I might get it to work. void time(int d) {d+=1;} void main() {int d; start_process(time(d), (...) (28 years ago, 18-Mar-97, to lugnet.robotics.handyboard)
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| | mini board boards
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Does anyone know who I can puchase a couple of mini-boards? I only need the printed circuit boards. I don't need a full kit. Thanks Ed Arnold hilander@bellsouth.net (28 years ago, 18-Mar-97, to lugnet.robotics.handyboard)
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| | Re: RMB
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In a message dated 97-03-17 19:17:14 EST, mar@cooper.edu (MAR ERICSON) writes: << Does anyone know what RMB means in Assembler? >> I think it means "reserve memory byte" Jim Eaton (28 years ago, 18-Mar-97, to lugnet.robotics.handyboard)
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| | Re: RMB
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(...) RMB (Reserve Memory Bytes) RMB directive advances the location counter by the value of the expression in the operand field, effectively reserving a block of memory. The block of memory reserved is not initialized. Example: Location Counter (...) (28 years ago, 18-Mar-97, to lugnet.robotics.handyboard)
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| | compiler,code length, etc
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Hi, I'm using a very old freeware version of ICC11 for my miniboard programs. According to the documentation files that I have, it's from 1993. Is there a more recent version of a C compiler that I can use for my miniboard programs, maybe one that (...) (28 years ago, 17-Mar-97, to lugnet.robotics.handyboard)
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| | RMB
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Does anyone know what RMB means in Assembler? ---...--- ericson mar Master of Engineering Candidate Project: Mobile Robotics mar@cooper.edu (212)353-4356 Department of Mechanical Engineering The Cooper Union for the Advancement of Science and Art (...) (28 years ago, 17-Mar-97, to lugnet.robotics.handyboard)
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| | PWM
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Does the handyboard produce PWM if so what ports and how many. Is it hardware or software generated. (28 years ago, 17-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Sonar and the handyboard
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There's a program that already does this that comes with the stuff you got from the kent directory. Check the files. ---...--- ericson mar Master of Engineering Candidate Project: Mobile Robotics mar@cooper.edu (212)353-4356 Department of Mechanical (...) (28 years ago, 17-Mar-97, to lugnet.robotics.handyboard)
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| | Re: ds1233-10
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(...) I bought mine from JDR: < (URL) > A search for "ds233" at JDR yielded this: Product Info PRICE ---...--- BUY DS1233 $1.79 DALLAS 5V ECONO RESET, TO-92 (-10) 1 products found! (28 years ago, 17-Mar-97, to lugnet.robotics.handyboard)
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| | Sonar and the handyboard
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I just bought the Polaroid sonar unit and I need to test it. I have downloaded the sonar drivers and hookup instructions from the FTP site but I need some help. I want to write a small program that will take a sonar reading and display the distance (...) (28 years ago, 17-Mar-97, to lugnet.robotics.handyboard)
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| | Re: controlling an opto isolated motor
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(...) I've got a MOSFET h-bridge I built that uses an opto isolator and it talks to the Handyboard, I don't know if it will solve your problem but I'll tell you what I did with it. I've designed in a "Handyboard" mode. In this mode you can connect (...) (28 years ago, 17-Mar-97, to lugnet.robotics.handyboard)
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| | Re: ds1233-10
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Did you try : Insight (1-800-677-6011) supplies the Dallas Semiconductor voltage monitor (DS1233-10).? from the handyboard web page: (URL) where I got mine. jm (28 years ago, 17-Mar-97, to lugnet.robotics.handyboard)
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| | Re:system time
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(...) Since the system time is already provided, creating a process which runs every millisecond to achieve this may not be in your best interest, and will probably slow things down quite a bit. I dont recall whether the system clock counts in (...) (28 years ago, 17-Mar-97, to lugnet.robotics.handyboard)
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| | HOW TO UNSUBSCRIBE
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Please, do not send unsubscribe requests to the main Handy Board mailing list. Instead, send them to me, Fred Martin, fredm@media.mit.edu. I am the only person who can remove you from the list. Thank you for your consideration of others on the (...) (28 years ago, 17-Mar-97, to lugnet.robotics.handyboard)
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| | re: ztx614
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If I have interpreted the schematics correctly almost any npn can be used for the ztx614. The 614 simply provides ground for the IR transmitter with a collector current of about 3ma. The base current is set by the 10k R to about (5/10k) 0.5ma. If I (...) (28 years ago, 17-Mar-97, to lugnet.robotics.handyboard)
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| | unsubscribe
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Please unsubscribe me. ejevremo@alum.uax.es (28 years ago, 17-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Re:system time
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Hi Joe, Do you have the C-code that you are attempting to use and have the problem with ? Could you please post or send it to me ? I could not see any thing wrong from what you described in the mail. It is clearer to see the code. Regards, -Pandit (...) (28 years ago, 17-Mar-97, to lugnet.robotics.handyboard)
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| | Re:system time
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Pandit, As far as I know I can only read system time as along integer or floating point number(both cannot be used in conditionals).I do not know what casting is.One idea I came up with is creating process which runs for one millisecond and putting (...) (28 years ago, 17-Mar-97, to lugnet.robotics.handyboard)
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| | Re: LCD Panel Substitute
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Bill Conroy wrote: I am having an extremely difficult time finding a source for the Hitachi 16x2 LCD panel. I am wondering what an appropriate substitute would be. I am looking at the following part from page 53 of the Mouser Electronics Purchasing (...) (28 years ago, 17-Mar-97, to lugnet.robotics.handyboard)
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| | RE: Newbie
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I suppose that if you got the HB and write in this mail list you know the HB web. Just in case get http: //el.www.media.mit.e...ndy-board. There you have the a complete guide that how assembly, check, etc.. is a file in Acrobat PDF format with more (...) (28 years ago, 16-Mar-97, to lugnet.robotics.handyboard)
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| | RE: Ascii to integer...
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When I make programs with IC manipulating chars or char arrays, I have used pointers and after I get the memory addresses as reference. In your case you can get the address of the char with & and the content with peek and after subtract till the (...) (28 years ago, 16-Mar-97, to lugnet.robotics.handyboard)
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| | RE: ztx614
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Hi this is Rick Hormigo from Southern Mississippi University, and I'm new in this list and this is my answer for the question about ZTX614. I'm foreigner, so I'm sorry for my English !!! The only one very famous darlinton for medium power that I (...) (28 years ago, 16-Mar-97, to lugnet.robotics.handyboard)
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| | Re: sonar help..
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There is an OEM kit which includes 2 ranging units and an instrument grade sonar transducer. Instrument grade meaning no protective enclosure. This kit has an order no. 606783 Just phone Polaroid Customer Service at 800 225 1618 and I'm sure they'll (...) (28 years ago, 16-Mar-97, to lugnet.robotics.handyboard)
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| | Re: sonar help..
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Sriram, It looks as though the diagram you have is correct. I should warn you that I have a sonar board in which the cable was put on backward by Polaroid manufacturing. There is a manual that you should have for the ranging unit. In the manual (pg (...) (28 years ago, 16-Mar-97, to lugnet.robotics.handyboard)
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| | Re: sonar help..
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where can i purchase a soner unit everyone talks about or is anyone done with thiers and would like to sell it please e-mail me with info. thank you in advance bryan wiabel offrds2@aol.com (28 years ago, 16-Mar-97, to lugnet.robotics.handyboard)
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| | music?
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Hi, unlike most handyboard subscribers, I am not using the handyboard for robotics, but for music: my HB is an interface between gesture sensors a macintosh based multimedia system running Opcode Max and Macromedia Director with MIDI equipment and (...) (28 years ago, 16-Mar-97, to lugnet.robotics.handyboard)
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| | system time
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When I try to use the system time as part of an expression in an if-else statement I get an error message while trying to download to the board.Goes something like : type <float> cannot be used in a conditional Is there any way of getting system (...) (28 years ago, 16-Mar-97, to lugnet.robotics.handyboard)
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| | Handy Board Cost
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Is the $290 for an assembled board from Gleasons a reasonable price. Just want to make sure that I havent overlooked any better deals. (28 years ago, 16-Mar-97, to lugnet.robotics.handyboard)
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| | sonar help..
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(...) Hi everyone, Iam having some problems connecting my polaroid sonar to the handyboard. Any help will be greatly appreciated. According to the application notes (from polaroid) i've connected the flexible cable to the J1 connector as illustrated (...) (28 years ago, 15-Mar-97, to lugnet.robotics.handyboard)
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| | Never Mind!
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Sorry, ignore my last message about the over-voltage problem I was having. The reading was caused by a low battery in my multimeter. Oops! :) (...) everything >seems to check out. Help! (28 years ago, 15-Mar-97, to lugnet.robotics.handyboard)
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| | Handy Board Assembly Problem
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Hi! Thanks all for your input on the HB, puchased one and have started to assemble it, but have run into a problem. On the first step, the measured voltage across C14 is 5.8V. I've run through the debug steps and everything seems to check out. Help! (28 years ago, 15-Mar-97, to lugnet.robotics.handyboard)
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| | (no subject)
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Hello, All! Long time listener, first time caller. Hello. Does anyone hve any info. on how to control the direction of a motor while having it seperated from the H.B. by an optoisolator? (the motors run at 3.0- volts) I figured out how-to, if I use (...) (28 years ago, 15-Mar-97, to lugnet.robotics.handyboard)
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