 | | Re: Help!! Polaroid problem!!!
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Hey, I just wanted to thank everybody for there help with this, it did turn out to be the pull up resistor problem, I feel like a moron. We used the handyboardy sonar interfacing schematic when we wired it up and failed to realize that we aren't (...) (26 years ago, 23-Apr-98, to lugnet.robotics.handyboard)
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| | examples
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I was wondering if anyone out there could send me some very basic, easy to understand programs that could help me figure out how to use sonar modules. Thanks, Richard (26 years ago, 23-Apr-98, to lugnet.robotics.handyboard)
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| | Re: Help!! Polaroid problem!!!
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Generally the capacitor is the problem :-) The capacitor in the original note is there to pull BINH true* to allow the sensor to detect things that are closer than 18". Generally, when you include it, unless the design of the system holding the (...) (26 years ago, 23-Apr-98, to lugnet.robotics.handyboard)
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| | Re: PWM and encoder
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(...) Are you using the "smooth" PWM motor routines? Note also, that a DC motor does not change velocity linearly with an increase in current unless it is under load. This was a recently asked question on the list. Maybe grepping the digest for (...) (26 years ago, 23-Apr-98, to lugnet.robotics.handyboard)
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| | Re: Help!! Polaroid problem!!!
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(...) residual noise? It was my understanding that the Polaroid module used pulse time differentials to relay distance information. One need only look at the difference in time, between the leading edge of the init pulse, and the leading edge of the (...) (26 years ago, 23-Apr-98, to lugnet.robotics.handyboard)
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| | Trinity College contest report
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Hi all, first, the URL: (URL) went to last weekend's Fire-Fighting Robot Contest at Trinity College, along with my colleague Steve Ocko, who had built a cute robot based on our network-cricket technology (see (URL) for more on that). We spent about (...) (26 years ago, 22-Apr-98, to lugnet.robotics.handyboard)
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| | A few questions....
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First I want everyone to know two things. First I am new to this list. Second, I have moderate knowledge of electronics.... Until about a few weeks ago, I had been working with Basic Stamps 1 and 2. After looking at all the information about (...) (26 years ago, 22-Apr-98, to lugnet.robotics.handyboard)
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| | Re: Help!! Polaroid problem!!!
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oh yeah? Well, what about the capcitor, huh? ;) ---...--- 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 (...) (26 years ago, 22-Apr-98, to lugnet.robotics.handyboard)
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| | Re: PWM and encoder
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Well, actually, it's not power either. Power is V * I. Sorry, it's actually the voltage. ---...--- ericson mar Master of Engineering Candidate Project: Mobile Robotics mar@cooper.edu (212)353-4356 Department of Mechanical Engineering The Cooper (...) (26 years ago, 22-Apr-98, to lugnet.robotics.handyboard)
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| | Re: PWM and encoder
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The 100, 50, 40, etc. are not really "speeds". They are power. It is related to the average voltage level of your output. Speed depends on the torque and characteristics of your motor. You can hold on the the wheel and still drive the motor at 100. (...) (26 years ago, 22-Apr-98, to lugnet.robotics.handyboard)
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| | Re: Help!! Polaroid problem!!!
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When it first worked for me, I used the HB NiCd. I grounded binh and it worked. I used binh to measure like 7 inches and it worked fine too. ---...--- ericson mar Master of Engineering Candidate Project: Mobile Robotics mar@cooper.edu (212)353-4356 (...) (26 years ago, 22-Apr-98, to lugnet.robotics.handyboard)
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| | Re: Serial Communication: HB -> Win95
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To answer my own question, at least partially, here is a Win95 Host program to communicate (single bytes) with the HandyBoard over a serial line: /* Win95 Visual C++ Host Code to talk to HandyBoard */ #include <conio.h> // _outp, _inp #include (...) (26 years ago, 22-Apr-98, to lugnet.robotics.handyboard)
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| | Re: IC stack problem
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(...) The funny thing is, it doesn't complain about arrays smaller than 4x4. All values are stored correctly for an array of size 3x3. What's this 'magic' number 4 then? Jan Sipke van der veen (26 years ago, 22-Apr-98, to lugnet.robotics.handyboard)
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| | Re: loading files with IC
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In fact, that's weird.. I can't answer to that. To me, I'm pretty sure that IC would have gave me an error, like when I try to load a C program without having loaded the ICB containing the special function used by this C program. For example, i (...) (26 years ago, 22-Apr-98, to lugnet.robotics.handyboard)
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| | Re: Handy board help
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You can build a stepper motor controller on a separate circuit board, then remove the motor control IC's off the handy board and use the output signals to control your stepper. Will have to write a program to run it. you will need a min of 4 outputs (...) (26 years ago, 22-Apr-98, to lugnet.robotics.handyboard)
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| | Re: PWM and encoder
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The nonlinearity has to due with the characteristics of your motor. You will find that a single step of power at the low end has a greater effect on the speed than a single step at the high end, as the motor approaches its top speed. The (...) (26 years ago, 22-Apr-98, to lugnet.robotics.handyboard)
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| | Re: Help!! Polaroid problem!!!
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The reason you don't need a pull up resistor for the Handy Board is because the Handy Board has built in 47k pull up resistors on the digital inputs! -----Original Message----- From: MAR ERICSON <mar@cooper.edu> To: Darkman <lroska@cyberus.ca> Cc: (...) (26 years ago, 22-Apr-98, to lugnet.robotics.handyboard)
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| | IC stack problem
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Hello everybody, Is something wrong with this code or is it IC? { int a[4][4], i; for (i=0; i<4; i++) { a[i][i]=i; } } When I type this at the IC prompt it complains: Downloading 79 bytes (addresses C200-C24E): 79 loaded COMPILER ERROR!: 2 extra (...) (26 years ago, 22-Apr-98, to lugnet.robotics.handyboard)
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| | Re: Help!! Polaroid problem!!!
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well....I might be the way you are powering the sensors ??? Maybe luck ???? :)))))) Actually I don't why you don't need any of those supporting parts. A short question ...For what range are you using the sensors (are you using the binh signal) ?? We (...) (26 years ago, 22-Apr-98, to lugnet.robotics.handyboard)
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| | Digitial input problem
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Hi all, i have built a handyboard. It works fine. But on Digital PIN 9 "PAI" i got allways high level (1) during test via "hptest.c". I think i haven´t any soldering problems. That´s wrong ??? bernd klein (26 years ago, 22-Apr-98, to lugnet.robotics.handyboard)
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| | PWM and encoder
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Hi, i have some questions about PWM and encoder. I made following tests: 1) Speed : motor(0,100) my encoder count f.e. 20clicks / per second 2) Speed: motor(0,50) my encoder count f.e. 15clicks / per second 3) Speed: motor(0,40) my encoder count (...) (26 years ago, 22-Apr-98, to lugnet.robotics.handyboard)
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| | Re: IR Transmit ?!? HELP
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(...) Did you follow the instructions in the HB Assembly debug? at (URL) says: Output Stage If LED9R fails to light after the poke command is issued, trace the following progression of signals. Please refer to the infrared output schematic: * 6811 (...) (26 years ago, 22-Apr-98, to lugnet.robotics.handyboard)
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| | IR Transmit ?!? HELP
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I recently assembled a Handy Board, everything is perfect except for the IR Transmitter. The IR Tx LED does not light. It is not the LED itself because I replaced it. I can't seem to figre out what's wrong. Please help. Thank You Peter Eacmen (26 years ago, 22-Apr-98, to lugnet.robotics.handyboard)
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| | To Prof. Fred Martin: Neat!
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Hi, I saw your robot at the Trinity fire fighting contest last Sunday. It was neat, and very animate. I was curious to know if you had figured out why it did what it did during your first run (?). And, what type of sensor were you using on the rear (...) (26 years ago, 22-Apr-98, to lugnet.robotics.handyboard)
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| | Re: Help!! Polaroid problem!!!
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Why does it seem like everyone except me needs a pullup resistor and perhaps a capacitor somewhere to operate the Polaroid? I've never had any problems without any of these components. ??? The first time I connected the sensor, it worked perfectly. (...) (26 years ago, 22-Apr-98, to lugnet.robotics.handyboard)
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| | tsl1301 or 1401
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Has anyone tried to use one of the TI tsl1301 or 1401 linear sensors with the HB. I ended up with a few but am having a tough time trying to figure out what the data sheets are trying to tell me. Not real clear (to me). Bruce A. Moore (26 years ago, 21-Apr-98, to lugnet.robotics.handyboard)
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| | Handy board help
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I am interested in using the Handy Board, but I have a few questions about it first. Please help. :) I noticed the Handy Board supports 4 motors but I am interested in using stepper motors with it. Is this possible? If so what modifications would be (...) (26 years ago, 21-Apr-98, to lugnet.robotics.handyboard)
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| | Re: Help!! Polaroid problem!!!
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Are you using a pullup resistor on the ECHO pin? If not that is your problem. The ECHO output is an open collector driver which requires an 4.7 K pull-up resistor between the output and Vcc. The pull-up is necessary for connecting the module to a (...) (26 years ago, 21-Apr-98, to lugnet.robotics.handyboard)
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| | Help!! Polaroid problem!!!
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I am trying to use one of the Polaroid 6500 kits from Wirz with my senior design project. It doesn't exactly use a handyboard, but our microcontroller is virtually identical at the lowest level. The problem is when we attach the device to the scope, (...) (26 years ago, 21-Apr-98, to lugnet.robotics.handyboard)
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| | is IC compatible with the MC68HC11F1
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hi from France, I already have a handy-board running with a 11A1 chip and I plan to adapt the circuit for a 11F1 chip, with the same memory map. Does someone have any experience about running IC with this chip? Will it work with the pcode_hb.s19 (...) (26 years ago, 21-Apr-98, to lugnet.robotics.handyboard)
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| | Help!!! Polaroid problem!
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I am trying to use one of the Polaroid 6500 kits from Wirz with my senior design project. It doesn't exactly use a handyboard, but our microcontroller is virtually identical at the lowest level. The problem is when we attach the device to the scope, (...) (26 years ago, 21-Apr-98, to lugnet.robotics.handyboard)
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| | Re: Class functions from C++ to C
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Hi Kate you could use some precompiler to convert C++ to C. I think that the GNU C++ compilers have such a precompiler. (At least the older ones do.) Tom krasing@iastate.edu schrieb: (...) (26 years ago, 21-Apr-98, to lugnet.robotics.handyboard)
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| | Serial Communication: HB -> Win95
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I am using the serial_putchar() and serial_getchar() communication routines on the HandyBoard, and everything is working fine from the PC to the HB. However, I am having trouble getting the HB to send data back to the PC. Here is main() on the HB: (...) (26 years ago, 21-Apr-98, to lugnet.robotics.handyboard)
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| | Class functions from C++ to C
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I'm using A-Life techniques to control a simple robot. The program I'm using was initially written by my A-Life professor in C++, and as I use IC, I need to bring it over to C. I'm having difficulties as it calls a class (bots) from a C++ library (...) (26 years ago, 20-Apr-98, to lugnet.robotics.handyboard)
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| | newby
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Hi. I teach 8th grade science and I am very interested in adding Robotics to our curriculum in the fall. I have been following with keen interest, the listserv on the handyboard. Could somebody tell me, where I can obtain reading materials to help (...) (26 years ago, 20-Apr-98, to lugnet.robotics.handyboard)
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| | loading files with IC
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Howdy from the world of program failure... please consider this scenario: 1. let's say I write a series of functions, put them in a file, and download the file to my HB. Now I write a program that uses the previously downloaded functions, and (...) (26 years ago, 20-Apr-98, to lugnet.robotics.handyboard)
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| | Help encoders with quadrature outputs
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Hello, I am curently trying to use encoders with quadratures outputs If someone has already developped a program for such encoders I would be very interested in. A 8 bits counters can also be connected to this encoders. If someone has already (...) (26 years ago, 20-Apr-98, to lugnet.robotics.handyboard)
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| | encoders
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I haven't had a chance to experiment with this yet, but it look like a something that might work. Have you check out any mice, some of them have two encoders on them. they are small, low power and cheap. I plan to experiment with them this summer, (...) (26 years ago, 20-Apr-98, to lugnet.robotics.handyboard)
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| | FW: Optical Encoders
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I sent to this to Paul personally . . . there may be general interest. (...) (26 years ago, 20-Apr-98, to lugnet.robotics.handyboard)
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| | Re: Optical Encoders(thanks)
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Thanks Daniel & David for your help. (26 years ago, 19-Apr-98, to lugnet.robotics.handyboard)
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