 | | supplier for Sharp IS1U60 infrared demodulator
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Hello Folks- A couple of months ago I built a HB with the exception of one part... U15 (Sharp IS1U60 infrared demodulator) ... I now have the need. I am looking for the info for a supplier or individual that will sell a small number(2). I'm in the (...) (28 years ago, 7-Jan-99, to lugnet.robotics.handyboard)
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| | (no subject)
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unsubscribe Thierry VOINIER CNRS-LMA-IM 31, Chemin Joseph Aiguier 13402 Marseille France Tel : 04 91 16 44 73 Fax : 04 91 22 08 75 E-mail : voinier@alphalma.cnrs-mrs.fr (URL) (28 years ago, 7-Jan-99, to lugnet.robotics.handyboard)
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| | RE: GP2D02?
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I own an handy-board now for 2 months and I have now 2 GP2D02 connected to it. (took me 1 hour to hook them up and test) You need a digital output-pin(like one off the spi-pins) or make use of the expansion-board, which has digital outputs. I (...) (28 years ago, 7-Jan-99, to lugnet.robotics.handyboard)
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| | Position Control Question ?
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Hi Everybody Through reading every day e_mails, I have been led to beleive that I have to be carefull in choosing a servo motor brand, so could any body help me in choosing a servo for my application which is a position control,I mean a ref. and a (...) (28 years ago, 7-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Type conversion IC.
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I don't have IC handy, but you should just be able to do a hard cast. float aFloat = 1.3; int anInteger = 0; anInteger = (int) aFloat; /*cast the float to an int */ /*you can also do it in a function call*/ FuntionTakesAnInt( (int) aFloat ); Hope (...) (28 years ago, 7-Jan-99, to lugnet.robotics.handyboard)
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| | type conversion
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Hi to all And HAPPY NEW YEAR. I have a question. How can i convert a floating variable into a integer variable? I must send via serial line the result of the functions SECONDS(). Thank Federico E-mail:fedsante@tin.it (28 years ago, 6-Jan-99, to lugnet.robotics.handyboard)
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| | Type conversion IC.
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Hi to all And HAPPY NEW YEAR. I have a question. How can i convert a floating variable into a integer variable? I must send via serial line the result of the functions SECONDS(). Thank Federico E-mail:fedsante@tin.it (28 years ago, 6-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Handyboard power supply
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what is the amp-hour rating of each cell. standard AA rechargables are 500 to 800 mAh. if your cells are significantly different than this, the charging might not work properly. generally though i don't see too many probs with this. you might need (...) (28 years ago, 6-Jan-99, to lugnet.robotics.handyboard)
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| | GP2D02?
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If anyone who has successfully interfaced the GP2D02 to the Handyboard would share that knowledge with the less experienced, it would be greatly appreciated. Thanks! (28 years ago, 6-Jan-99, to lugnet.robotics.handyboard)
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| | Re: using external batteries
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the label on the diagram says "cut motor trace here" with an arrow that points to a dark band. if you look at your HB, it won't have a dark band. that's where you need to cut. slice through the green-coated trace where that dark band on the picture (...) (28 years ago, 6-Jan-99, to lugnet.robotics.handyboard)
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| | using external batteries
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dear readers and fred, i read the instructions on the website on how to use external battaries. the problem is: - in the website, i couldnt see the copper trace properly which we need to cut in order to use the external batteries port. could any one (...) (28 years ago, 6-Jan-99, to lugnet.robotics.handyboard)
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| | Re: servo help
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try running the servo off of a separate power supply; e.g., 4 AA cells. you'd connect the servo red wire to the battery + lead, the servo black wire to the battery - lead, and also connect the battery - lead to the HB motor ground. in general it is (...) (28 years ago, 6-Jan-99, to lugnet.robotics.handyboard)
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| | Re: INTERACTIVE C
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We have developed a library of functions so that one can write HB-style code and run it either on the HB or compile it with the library and run it on a PC. It hasn't been thoroughly debugged, but works consistently (There are some timing issues that (...) (28 years ago, 6-Jan-99, to lugnet.robotics.handyboard)
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| | Interrupt Request line
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Hi all, Does anyone know how to get a the interrupt line on the handyboard. Been looking at the documentation, and was a bit surprised that the interrupt was not available. Am I missing something? Charles Hacker Lecturer in Electronics, Computing (...) (28 years ago, 6-Jan-99, to lugnet.robotics.handyboard)
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| | Trinity Fire-Fighting Contest
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Has anyone built robots for the trinity fire-fighting contest. I would like to hear your design and what kind of major problems that you encountered in building it. A website would be great. The reason for my interest is that I need to include any (...) (28 years ago, 6-Jan-99, to lugnet.robotics.handyboard)
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| | servo help
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I could really use some help connecting a Futaba 3101 microservo. I bought the micro servo to reduce the weight instead of the standard S148 servo. Anyway, I connected the red line to the HB +5V supply on the SPI expansion header. The black wire to (...) (28 years ago, 5-Jan-99, to lugnet.robotics.handyboard)
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| | Re: INTERACTIVE C
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If you use icc11 (a cross compiler, not an interpreted compiler) for the handyboard (they have a library for controlling the handyboard) then printf() calls write to the PC and lcd_write calls write to the LCD. --Chuck icc11 is available from (...) (28 years ago, 5-Jan-99, to lugnet.robotics.handyboard)
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| | Handyboard power supply
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Hi Fred and other, I intend to use grandcell rechargable batteries to supply the HD. Each battery is 1.5V . If I supply 7 batteries of total 10.5V to the HD , is there any problem ? rgds, phillip (28 years ago, 5-Jan-99, to lugnet.robotics.handyboard)
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| | INTERACTIVE C
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Dear Friends, In Interactive C,the printf statement writes messages to the LCD screen.Is there any way by which we can write to the monitor screen of the computer from which the programs were downloaded? Yours Sincerely, Nitin (28 years ago, 4-Jan-99, to lugnet.robotics.handyboard)
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| | Serial Communication Clarifications for Newbies, Please...
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Howdy, I've been playing with my HB for about a month now, and after reading all the documentation again, I was able to solve the newbie questions that I have posted few weeks ago... But now, I'm stuck with serioal I/O :) Could someone help me (...) (28 years ago, 4-Jan-99, to lugnet.robotics.handyboard)
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| | again - pc/win95 and hb pcode source
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Hi! Some time ago i asked this question now i try again, maybe anybody can help me! I dowloaded the environment for the pc(dos) to assemble a s19-pcode file for the hb. Now i tried a little bit but it does now work, What you can download under pcode (...) (28 years ago, 4-Jan-99, to lugnet.robotics.handyboard)
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| | HBML:
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We are not able to get the Dallas Semiconductor 1233 power on reset chip in India here. Can I use a regular power on reset circuit or can i find any particlular replacement for the chip. Please reply soon thank you -Milind (28 years ago, 4-Jan-99, to lugnet.robotics.handyboard)
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| | Re: INTERACTIVE C
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not really. you can issue serial line characters to the desktop PC from the HB (see the FAQ), but IC cannot display them. so, for interactive development, it won't work. but if you can quit IC and run a terminal emulator program on your PC (e.g., (...) (28 years ago, 4-Jan-99, to lugnet.robotics.handyboard)
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| | Good link-source
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www. columbia-center.org/...ting/index html This company has a intetresting "radar" -ultrasonic in nature. The software, I thought, was especially interesting and adaptable to the handy board by some one a whole lot cleverer than myself. Also some (...) (28 years ago, 3-Jan-99, to lugnet.robotics.handyboard)
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| | Re: Announcing the Handy Board Expansion Board
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(...) you can buy these at LEGO Pitsco-Dacta, (URL) are part number 979891, $27 ea. Fred (...) (28 years ago, 2-Jan-99, to lugnet.robotics.handyboard)
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| | DEBUGGING SOFTWARE
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Dear friends, With respect to page 31(page no as taken from printout) of the Handy board assembly manual (hba.pdf) downloaded from (URL) site, it has been said there that custom software shall be available soon for testing memory.I want to know (...) (28 years ago, 2-Jan-99, to lugnet.robotics.handyboard)
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| | Re: sensors input
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michael, The parallel combination of resistors is the recprical of the sum of their recpricol values. Req = 1 / ( 1/R1 + 1/R2 + 1/R3 + ...) Your 16 LED resistors combine to make Req = 1/( 16 x (1/82)) = 5.125 ohms. So your LEDs are drawing just (...) (28 years ago, 1-Jan-99, to lugnet.robotics.handyboard)
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| | RE: Announcing the Handy Board Expansion Board
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How can I get ahold of a Lego shaft encoder? (...) (28 years ago, 1-Jan-99, to lugnet.robotics.handyboard)
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| | Re: sensors input
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You don't really show your connection to your Handyboard, but I would suspect that with 16 connectted in parallel, you are probably drawing sufficient current to drop your voltage below the reset value of the micro monitor (DS1233? if I remember (...) (28 years ago, 1-Jan-99, to lugnet.robotics.handyboard)
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| | Announcing the Handy Board Expansion Board
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Greetings everyone, It's the last day of 1998, so it's a good time to announce the official release of the Handy Board expansion board. The Handy Board Expansion Board is officially released! The Expansion Board plugs on top of the Handy Board, and (...) (28 years ago, 31-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Miniboard in space.
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Can you possibly share your complete design (maybe in a web page ?). That would be a graet service for us all. Thanks (...) (28 years ago, 31-Dec-98, to lugnet.robotics.handyboard)
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| | Re: HBLS Subject Headers (please Read)
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either that or switch to an email client with better filtering. I use Claris Emailer 2 adn simply filter all mail whose to or from includes "handyboard" cheers, tim ___...___ Dr. Timothy Bates Don't compromise. Use QuickTime. Dept Psychology (URL) (...) (28 years ago, 31-Dec-98, to lugnet.robotics.handyboard)
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| | sensors input
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hi everyone, i have tried to configure a set of sensors used for sensoring the wall in the maze. the circuitry of each of the sensors is: +5V +5V ----- ----- | | | | \ \ / / R1=82 ohm \ \ R2=120Kohms / / | | | | ------- |/ IR emitter \./ |\ IR (...) (28 years ago, 30-Dec-98, to lugnet.robotics.handyboard)
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| | HBLS Re: pcode 3.2 beta 1 with FP divide fix
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Hello All- Just as a data point for Randy...... I have installed 3.2 beta 1 pcode on my HandyBoard, and I get the right answer for floating point divides. : ) (...) (28 years ago, 30-Dec-98, to lugnet.robotics.handyboard)
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| | HBLS Subject Headers (please Read)
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It would be great if everyone put something in the header of every message for the list. This would make it possible to have mail coming from the list automatically filed. Could we put something like 'HBLS' in the subject of every message for the (...) (28 years ago, 30-Dec-98, to lugnet.robotics.handyboard)
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| | Re: DC Motor Manufacturers
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Regarding the DC motor manufacturers that I had sent you a mail about. Here are the details: I have talked to the manufacturer here in India for obtaining the details for you and the good news are that they already export these motors to the USA. (...) (28 years ago, 30-Dec-98, to lugnet.robotics.handyboard)
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| | Re: DC Motor Manufacturers
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we are developing a small rover here at V.E.S. Institute of technology, India and we are using DC motors made by a manufacturer here in Bombay,India. They make all kinds of DC motors and special internally geared motors having the ratings that we (...) (28 years ago, 29-Dec-98, to lugnet.robotics.handyboard)
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| | RE: digital inputs?
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hi everyone, i would like to know if there is any digital inputs other than the 16 inputs used for the sensors. which means i would like to have more inputs! is this possible? from michael (28 years ago, 29-Dec-98, to lugnet.robotics.handyboard)
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| | encoder to handyboard?
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dear readers and fred martin my DC motor comes with a 10 pin optical encoder(supply current-10mA) how do i connect my encoder part to the handy board? can i ignore the encoder? my robot only needs to sense retroreflective white tape, can i just use (...) (28 years ago, 29-Dec-98, to lugnet.robotics.handyboard)
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| | Photocells?
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I am seeking help in locating suppliers of quality photocells or light sensing equipment suitable for use in a handyboard environment. Thanks! (28 years ago, 29-Dec-98, to lugnet.robotics.handyboard)
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| | http://tcw2.ppsw.rug.nl/hb/hbassem/index.html/join mailing list
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I wish to join the handy board mailing list. (28 years ago, 29-Dec-98, to lugnet.robotics.handyboard)
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| | DC Motor Manufacturers
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Hello everyone, Has anyone found a good source for DC motors? I am looking for small motors to use as direct drive movement of a small 1.5 LB robot. Any help is greatly appreciated! Bill Denzel Senior Mechatronics Student California Polytechnic (...) (28 years ago, 27-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Downloading problems
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I haad similar problems and then I realized that I did not need to download pcode or anything special. I just ran IC and it connected -- all the ports are working fine... Scott Sherman (...) (28 years ago, 27-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Downloading problems
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(...) please download the latest 6811 Downloader for Macintosh, just posted last week on the HB web site. Fixes compatibility probs. (...) th the (...) OK, yes, you've already downloaed. (...) plus (...) please download these files from the HB web (...) (28 years ago, 27-Dec-98, to lugnet.robotics.handyboard)
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| | Downloading problems
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Fred This is a followup to your answer regarding downloading problems 1. The 6811 Downloader does not seem to work with HB. I get mesaages varying from recieved 0, wanted 255-or serial port not responding. I am DL from a MAC PPC 6500 OS 8. 2. This (...) (28 years ago, 26-Dec-98, to lugnet.robotics.handyboard)
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| | RE: servo motor
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Since the System 3000 servos appear to be made by Futaba, and they specify a standard Futaba "J" connector, my guess is that they would plug right in. Futaba practice is as you state: red=5V, black=common, white=signal. Brett Anthony -----Original (...) (28 years ago, 26-Dec-98, to lugnet.robotics.handyboard)
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| | Re: CHARGER BOARD PROBLEM(URGENT)
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phillip, please go through the sequence of tests in the assembly directions (as if you were building the serial/charger board from scratch), and indicate the point at which you first detect a problem. (URL) your message you said: (...) (28 years ago, 26-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Downloading problems
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Use 6811 Downloader to download pcode_hb.s19. Power cycle, and the Handy Board should beep and display a version message on its LCD screen. Then, run IC modem or IC printer depending on which port you are using. It should be configured to boot with (...) (28 years ago, 26-Dec-98, to lugnet.robotics.handyboard)
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| | Downloading problems
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I assembled the HB board some 2.5 years ago. At that time it seemed to work very well. The hook is that I'm quite strong on the Hardware side and rather anemic with regard to software. In the earlier time I would download it from a Mac 11si-no (...) (28 years ago, 26-Dec-98, to lugnet.robotics.handyboard)
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| | Re: dc motor output control? Please help!
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the short answer is that you can't use 3v motors with the handy board. the FAQ states this: (URL) you use the "separate motor power supply" hack, with a 6v battery, you might be able to get 3v motors to work. see (URL) your message you said: (...) (28 years ago, 25-Dec-98, to lugnet.robotics.handyboard)
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| | CHARGER BOARD PROBLEM(URGENT)
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hI FRed, anothony and others, I just plug in the RJ11 in the HD and charger board. It supposed that the red LED on the charger board should light up. It failed to light up. When I plug in the adaptor onto the charger board, the red LED light up but (...) (28 years ago, 25-Dec-98, to lugnet.robotics.handyboard)
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| | Merry Christmas!
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Merry christmas! Megan See you real soon, you rock my world! Justin thanks for the many rides to camp Erv Shine on you crazy diamond! Joel be careful! See you soon. Jeremy Don't work too hard, *laugh* Jacob See ya soon, take care. All my A-Rocket (...) (28 years ago, 25-Dec-98, to lugnet.robotics.handyboard)
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| | dc motor output control? Please help!
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hi everyone, i need some help on controling the output voltage of the dc motor ports. the o/p of the motor port is 12V. but my motor required voltage is only 3V. i like to know if there is any way to clamp down the voltage to 5V or lesser. i try (...) (28 years ago, 25-Dec-98, to lugnet.robotics.handyboard)
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| | servo motor
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Hello again, I am using a Tower Hobbies System 3000 servo motor on my expansion board. Does anyone know if the black, red, and white wire match up with ground, 5 volts, and control respectively for that particular brand of servo motor? Scott Sherman (...) (28 years ago, 24-Dec-98, to lugnet.robotics.handyboard)
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| | Source of Handyboard in UK?
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I have a small quantity of handyboard pcb's available for 16GBP the set, handyboard plus charger including the hard to find ZTX darlington. Post paid in UK, Visa and Mastercard accepted. This is a limited offer, once they are gone I will not be (...) (28 years ago, 24-Dec-98, to lugnet.robotics.handyboard)
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| | Happy Holidays
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Happy Holidays For All !!! (28 years ago, 23-Dec-98, to lugnet.robotics.handyboard)
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| | RE: expansion board - servo control
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I've had a similar problem, make sure your servo power is fully charged. An undercharged system will sometimes drive all the way one way. Mike Ross ---...--- From: shsc9801@condor.stcl...state.edu] Sent: Wednesday, December 23, 1998 8:04 AM To: (...) (28 years ago, 23-Dec-98, to lugnet.robotics.handyboard)
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| | serial ports question
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hi, can i have 2 sets of serial communications at the same time with the handyboard? i have 1 set that is between the handyboard and the SSC via pa7. i want to have another channel, pc serial application to handyboard, in that one direction only, (...) (28 years ago, 23-Dec-98, to lugnet.robotics.handyboard)
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| | RE: encoder and motor questions
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I am doing something very similar, but instead I am trying to follow a black line on a white background. Either way, I am using IR detectors and emitters. They are readily available and work very well. I'm sorry I have never used an encoder to know (...) (28 years ago, 23-Dec-98, to lugnet.robotics.handyboard)
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| | Re: expansion board - servo control
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hard to tell what is wrong. do you have a scope so that you can view the servo control signal. fred In your message you said: (...) (28 years ago, 23-Dec-98, to lugnet.robotics.handyboard)
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| | encoder and motor questions
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dear viewers here are some questions i need to ask: 1) my DC motor comes with a 10 pin optical encoder(supply current-10mA) pin 1- GND pin 2- Vcc pin 3- dir pin 4-standyby pin 5 and 6 - A1 and A2 pin 7 &8 - B1 and B2 pin 9 and 10 - Z1 and Z2 how do (...) (28 years ago, 23-Dec-98, to lugnet.robotics.handyboard)
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| | expansion board - servo control
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Hello, I emailed this to the handy board list and got one response. I am mailing it back hoping that I can get some more responses from those on the list and perhaps fred. (...) (28 years ago, 23-Dec-98, to lugnet.robotics.handyboard)
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| | charger board problem ( URGENT)
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hI Anthony and others, I just plug in the RJ11 in the HD and charger board. It supposed that the red LED on the charger board should light up. It failed to light up. When I plug in the adaptor onto the charger board, the red LED light up but NOT the (...) (28 years ago, 23-Dec-98, to lugnet.robotics.handyboard)
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| | RE: expansion board - servo control
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I also saw a similar problem while experimenting with an Atmel microcontroller and a Futuba servo. My problem ended up being that I had forgotten to have a common ground between the controller and the servo. Once I connected the grounds everything (...) (28 years ago, 23-Dec-98, to lugnet.robotics.handyboard)
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| | new 6811 Downloader for PowerMac G3's!
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Hi everyone, I've built a new version of a 6811 Downloader application for Mac that works fine with PowerMac G3's. (It also works with older Macs.) You can download it from the Handy Board home page: (URL) (28 years ago, 22-Dec-98, to lugnet.robotics.handyboard)
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| | Re: dc motor output control
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How about lifting pint 8 of the L293 chip and running a wire from it to a 7805 regulator (not the one used for logic). You could also run the wire to a separate battery pack. 4 NiCds in series gets you real close to 5V with no regulator. In motor (...) (28 years ago, 22-Dec-98, to lugnet.robotics.handyboard)
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| | Re: dc motor output control
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On my first robot, I just took a resistor in-line and used that. It got very hot, though, and didn't work evenly (some of them must have started to burn out before the others did....) (28 years ago, 22-Dec-98, to lugnet.robotics.handyboard)
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| | Re: I need a poloroid sonar board pinout.
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Wayne Try this link. (URL) It shows modifications for interfacing the one step board to a microcontroller. I also have an old one step ($1 at a garage sale) but I have not tried the modifications shown for use with the handyboard. I have taken the (...) (28 years ago, 22-Dec-98, to lugnet.robotics.handyboard)
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| | RE: expansion board - servo control
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|
-----Original Message----- From: shsc9801@condor.stcl...dstate.edu [mailto:shsc9801@con...state.edu] Sent: Monday, December 21, 1998 1:39 PM To: handyboard@media.mit.edu Subject: expansion board - servo control Hi, I stopped working with the (...) (28 years ago, 21-Dec-98, to lugnet.robotics.handyboard)
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| | expansion board - servo control
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Hi, I stopped working with the handyboard for a while but just started back up again. I put the expansion board onto my handyboard and began testing it. After testing the general tests done before with just the handyboard I started testing the servo (...) (28 years ago, 21-Dec-98, to lugnet.robotics.handyboard)
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| | unable to download P_code
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Hi everybody, When the one end of the RJ11 cable plug into the RJ12 side entry(J10), it supposed the red LED on the charger board will light up. However, it failed to light up. Hence, this made the booststrap failed and I unable to download the (...) (28 years ago, 21-Dec-98, to lugnet.robotics.handyboard)
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| | FW: change of address
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-----Original Message----- From: Jaron Paludanus [mailto:j.paludanus@....a2000.nl] Sent: donderdag 17 december 1998 23:58 To: Fred G Martin Subject: change of address I'm not sure my previous mail came through but I have gone high-speed by cable (...) (28 years ago, 21-Dec-98, to lugnet.robotics.handyboard)
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| | Unable to download P_code
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Hi everybody, When the one end of the RJ11 cable plug into the RJ12 side entry(J10), it supposed the red LED on the charger board will light up. However, it failed to light up. Hence, this made the booststrap failed and I unable to download the (...) (28 years ago, 21-Dec-98, to lugnet.robotics.handyboard)
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| | Help Needed -Reply
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You don't need to put that code into eeprom. Just put the code inside a main() function block like this: void main(void) { YOUR CODE } Be sure and include the start button logic at the start of your code. The handyboard with start and automaticly (...) (28 years ago, 21-Dec-98, to lugnet.robotics.handyboard)
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| | I need a poloroid sonar board pinout.
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I got a hold of a Poloroid OneStep Sonar camera at the second hand store, but it does not seem to match any of the pinouts I've seen on the Web... I've aready seen the pinout at WIRZ, but it is not the same. this board has 16 pins all at the edge of (...) (28 years ago, 20-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Help Needed
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Ever tried making a main() function? I don't have a handyboard yet, but I think it runs without the connection... See you, Cesar (28 years ago, 20-Dec-98, to lugnet.robotics.handyboard)
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| | Help Needed
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Hi I have an IC program (c text format), and I want to download this program to the eeprom of the handyboard and run it without having connection with the host PC (remove the phone cable) and use the start button to run. How I can convert my c file (...) (28 years ago, 20-Dec-98, to lugnet.robotics.handyboard)
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| | Re: stepper motors from 5 1/4 drives
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Hi! (...) okay, another newbie reply :-) After I received this message I opened several 5 1/4 drives that were going to trash at my job and took all the stepper motors and integrated circuits. Here's what I figured out: 1 - All the stepper motors I (...) (28 years ago, 20-Dec-98, to lugnet.robotics.handyboard)
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| | Re: a/d range
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Hi friends! Thank you for the replies about this topic. Now I could get a Reference Manual too... The a/d range is determined by the references given to the VrefH and VrefL pins. But be careful about this: "There should be at least 2.5V between (...) (28 years ago, 20-Dec-98, to lugnet.robotics.handyboard)
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| | dc motor output control???...???
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hi everyone, i need some help on controling the output voltage of the dc motor ports. the output voltage is 9.6V and i like to know if there is any way to clamp down the voltage to 5V or lesser. i try using a enternal resistor but the output signal (...) (28 years ago, 19-Dec-98, to lugnet.robotics.handyboard)
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| | Re: LCD configs (was:Suppliers and rf link)
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john calhoun, Mine just arrived and they are 1 X 16 connectors. I ordered 2035TNLD/Y displays for $8.00 each. You might want to order now while they have the 2X16 displays with 1X16 connectors. I have soldered the connector on and tested it and its (...) (28 years ago, 19-Dec-98, to lugnet.robotics.handyboard)
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| | Re: dc motor output control
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Maybe you can put a series of diodes in series and in parallel but the other direction to reduce the voltage. H-bridge +- +- +- +- motor H-bridge -+ -+ -+ -+ Good luck, James (...) (28 years ago, 19-Dec-98, to lugnet.robotics.handyboard)
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| | RE: urgent request help !!!!
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What about the display board itself? Could it be that one of the SMT parts on the board is dead? Or a trace on the LCD is shorted? --phil (28 years ago, 19-Dec-98, to lugnet.robotics.handyboard)
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| | RE: urgent request help !!!!
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-----Original Message----- From: phillip chia [mailto:philchia@sin...et.com.sg] Sent: Friday, December 18, 1998 7:04 AM To: handybd Cc: Mr Peter Lim Subject: urgent request help !!!! Hi Fred and others, I very desperate to debug the problem that (...) (28 years ago, 18-Dec-98, to lugnet.robotics.handyboard)
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| | dc motor output control
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hi everyone, i need some help on controling the output voltage of the dc motor ports. the output voltage is 9.6V and i like to know if there is any way to clamp down the voltage to 5V or lesser. i try using a enternal resistor but the output signal (...) (28 years ago, 18-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Downloader and a/d
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Cesar, (...) According to my book, you can set the reference voltages to anything from Vss to Vss + 6.0 V (notice that this is higher than Vdd). The A/D result is a ratioatic comparison for the sample voltage to the references. Page 48 of the (...) (28 years ago, 18-Dec-98, to lugnet.robotics.handyboard)
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| | Replacing L293D with L298H
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Hi Fred and others, I very desperate to debug the problem that took place in my HD. When I download the P_code, it is successfully downloaded. However, when the next instruction ask to reset the board, no words of sentence appear on the LCD. Only 16 (...) (28 years ago, 18-Dec-98, to lugnet.robotics.handyboard)
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| | Downloader and a/d
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Hi friends! First thank you a lot for the advices on the FingerBoard. It really gets near to what I need, but that ram chip is another headake. So I believe more in a "light" version of the Handyboard right now, later I'll make a specific version (...) (28 years ago, 18-Dec-98, to lugnet.robotics.handyboard)
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| | Re: HD LCD problems
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(...) On a lark, I'll suggest that perhaps U6 is damaged. If you have another 74HC138 around, try swapping it for the one on your HB. I had a "similar" problem (although not identical) and was able to diagnose the 74HC138 as the problem. I too was (...) (28 years ago, 17-Dec-98, to lugnet.robotics.handyboard)
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| | RE: Hot serial interface board
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<<snip>> So here's my question. Does your serial interface board run hot, i.e. noticeably hot to the touch. On my serial interface board (version 1.1 as printed on the board) the white ceramic block gets very hot along with the power chip? in the (...) (28 years ago, 16-Dec-98, to lugnet.robotics.handyboard)
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| | A Poloroid Sonar question.
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I've got a poloroid sonar question. I got a hold of a Poloroid OneStep Sonar camera at the second hand store, but it does not seem to match any of the pinouts I've seen on the Web... This board has 16pins, I believe this board is manufactured by TI. (...) (28 years ago, 16-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Mapping
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Thanks for the tip on reflection error. I'll have to build in a function to weight the position accordingly. I'm trying to stay away from occupency grids and use the native vectors to conserve memory while maintaining accuracy. I may have to resort (...) (28 years ago, 16-Dec-98, to lugnet.robotics.handyboard)
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| | HD LCD problems
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Hi FThompson, Fred and other, I encountered some problem in the downloading. I was successfully able to download the p_code into the HD. However, When the instruction proned me to reset the board,it always appears on the LCD without any lettering (...) (28 years ago, 16-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Beginner's Help
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(...) I've never hot HBDL to work, and I've tried it on a 386 (laptop), 486 and Pentium. Don't know why: just won't work under win3.11 win95 or win98. The DOS one I've used with quite a bit of success. Make sure you are restarting the computer (ie, (...) (28 years ago, 16-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Beginner's Help
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Richard, Thanks for the help. I finally got the board to accept the pcode. I acquired a PS/2 mouse to free up my COM1 port. I used the HBDL.exe program that came with the board. After several unsuccessfully attempts to program the board, for some (...) (28 years ago, 15-Dec-98, to lugnet.robotics.handyboard)
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| | 68hc11a1 x 68hc11a8 and IC hardware
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Hi people! I'd like to know two things: 1) Can I use the 68hc11a8 instead of the 68hc11a1 in the Handyboard, without recompiling Interactive C? 2) What's the minimum hardware to run Interactive C? I just want to blink a led to see if the hb is (...) (28 years ago, 15-Dec-98, to lugnet.robotics.handyboard)
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| | HB Reset not executing main().
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I built two more Handyboards and I've noticed something odd. When I download a program with a main() function, and reset the board, main() does not get executed. I thought it was supposed to. I'm using IC v3.1 (for the Mac) and Handyboard version (...) (28 years ago, 15-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Beginner's Help
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Make sure that your com port 2 is actually wired to the motherboard I've heard a lot of stories with com ports not working because they forgot to connect the ribbon cable. Check that first. Try booting ito dos and use the DL.exe instead of the HBDL (...) (28 years ago, 15-Dec-98, to lugnet.robotics.handyboard)
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| | Re: some kind of dividing circuit?!?!?!?!
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In reference to your question about the motor with encoders. I know this isn't a software solution, but what if you used an external hardware (chip) counter that reset after 2^(number of bits) clicks. Then send resets as your steps to the (...) (28 years ago, 15-Dec-98, to lugnet.robotics.handyboard)
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| | Re: Mapping
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(...) Watch the critical angle for the sonar too. If the sonar doesn't hit almost straight on, some of the energy will be reflected off at an angle, and may provide false longer distances. Smooth surfaces will have a lower critical angle then coarse (...) (28 years ago, 15-Dec-98, to lugnet.robotics.handyboard)
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