 | | Re: Assembler math/PID
|
|
Justin, Thanks for your reply. I assume you had one process doing the PID in a tight loop, and then had other concurrent processes doing other tasks. Was there ever a problem with the PID process not getting scheduled within the 1Khz system (...) (26 years ago, 4-Dec-98, to lugnet.robotics.handyboard)
|
| |
| | Two way audio
|
|
Hi, We are trying to transmit our voices to our remote robot to create the impression that the robot is talking. In addition, we want to be able to hear what the robot hears. Does anyone know any products that we can attach to our robot that will (...) (26 years ago, 4-Dec-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Extra output for clocking
|
|
Thanks for the advice on the ouput compare and portA. What I realized was the CPU time is being shared by some many functions, like the LCD printing, IR, PWM, that I'm not getting a fast enough pulse from the motor ports. I disabled a lot of these (...) (26 years ago, 4-Dec-98, to lugnet.robotics.handyboard)
|
| |
| | motor questions using motor(x,y)
|
|
Hi all, The motor(x,y) function in the lib_hb.c file works as expected (the motor speed does vary depending on value given and the correct motor goes on), but when I actually have a motor in the header both LEDs go on! (and I get corresponding (...) (26 years ago, 3-Dec-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Sonar question
|
|
The Polaroid Sonar board requires a supply voltage less than 7 volts. The battery of the handy board is around 12, so you'll probably shorten the life of your sonar board considerably if you connect it straight in (i.e. burn it up :.)). The diodes (...) (26 years ago, 3-Dec-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Sonar question
|
|
(...) The battery for the handy board is a 9.6V cell (8 * 1.2V cells in series.) A normal 1n400X diode will drop 0.7V each. (6 * 0.7 = 4.2) 9.6 - 4.2 = 5.4V (26 years ago, 3-Dec-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Sonar question
|
|
I'don't even bother using diodes at all I just use a 7805 voltage regulator that is well heat sinked and never had a problem with it -----Original Message----- From: ruizvic@mx1.ibm.com <ruizvic@mx1.ibm.com> To: handyboard@media.mit.edu (...) (26 years ago, 3-Dec-98, to lugnet.robotics.handyboard)
|
| |
| | Re: 2sonar
|
|
(...) I haven't used the transducer multiplexor myself; I decided to just hook up a second sonar module to the HB in the same manner as the first is hooked up. It looks like using the multiplexor ought to be fairly simple, though. First off, in the (...) (26 years ago, 3-Dec-98, to lugnet.robotics.handyboard)
|
| |
| | Sonar question
|
|
Hi to all, I would like to know what difference there are if I connect the 6 diodes between the Handy Board & the Polaroid Sonar Card. Can I connect the cards without diodes? I tested the voltage at the Catode at the end of the 6th diode and my (...) (26 years ago, 3-Dec-98, to lugnet.robotics.handyboard)
|
| |
| | Assembler math/PID
|
|
Hello, I am writing PID code that runs on the system interrupt. I am finding that I have to rewrite alot of the great math functionality available through IC. Does anyone know of a way to use an IC function on a regular system interrupt schedule? (...) (26 years ago, 3-Dec-98, to lugnet.robotics.handyboard)
|
| |
| | motor code questions
|
|
Hi, I got my Handyboard up and going and was trying the following code for driving my motors. (Figure I would try known code before forking out on my own). The code I got from the 'Inspiration to implemntation' book. Anyways it does not seem to (...) (26 years ago, 2-Dec-98, to lugnet.robotics.handyboard)
|
| |
| | sonar
|
|
what program to control about 2sonar.jpg? how i adjust program (sonar.c) for 2 sonar in picture 2sonar.c? (26 years ago, 2-Dec-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Hacking Servos
|
|
Thank you all very much for your help :) Best, Andre. (...) ===...=== Andre Philippi - Applications Developer | Phone: 626-296-5016 philippi@corp.earthlink.net | Fax: 626-296-5113 Earthlink Network, Inc. | 3100 New York Drive (URL) | Pasadena, CA (...) (26 years ago, 1-Dec-98, to lugnet.robotics.handyboard)
|
| |
| | RE: Hacking Servos
|
|
Yeah, I remember seeing that one; I may actaully have the info at home... Anyway, an R/C servo has a hard stop to limit travel because the electronics use a simple potentiometer on the output shaft for position feedback. These pots typically have (...) (26 years ago, 1-Dec-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Hacking Servos
|
|
(...) I put together a page with detailed instructions that has been used by a number of high school students without any problems. The robot is based on a Basic Stamp but the servo modifications are easy and work with any controller. (URL) (26 years ago, 1-Dec-98, to lugnet.robotics.handyboard)
|
| |
| | Hacking Servos
|
|
Howdy Folks :) I remember reading a web doc a while ago on how to convert servos so their shafts can rotate more than 180 degrees... It was a nice doc, with pics, schematics, and everthing... but I lost the URL... :( Does any one know what doc am I (...) (26 years ago, 1-Dec-98, to lugnet.robotics.handyboard)
|
| |
| | Re: HandyBoard and iMac?
|
|
It doesn't bother me that much: I haven't used a floppy in two or three years. I have ISDN at home: it's way faster than a floppy ;^). -- Eric (...) (26 years ago, 1-Dec-98, to lugnet.robotics.handyboard)
|
| |
| | 2sonar
|
|
i use circuit on 2sonar.jpg . if i use sonar.c program, how i adjust this program for 2 sonar trasducers. ?(a picture on 2sonar.jpg) i want to 1 sonar working single , don't together.or to alternate. Sonar number 1(#1)is working until check (...) (26 years ago, 1-Dec-98, to lugnet.robotics.handyboard)
|
| |
| | 2sonar
|
|
i use circuit on 2sonar.jpg . if i use sonar.c program, how i adjust this program for 2 sonar trasducers. ?(a picture on 2sonar.jpg) i want to 1 sonar working single , don't together.or to alternate. Sonar number 1(#1)is working until check (...) (26 years ago, 1-Dec-98, to lugnet.robotics.handyboard)
|
| |
| | 2sonar
|
|
i use circuit on 2sonar.jpg . if i use sonar.c program, how i adjust this program for 2 sonar trasducers. ?(a picture on 2sonar.jpg) i want to 1 sonar working single , don't together.or to alternate. Sonar number 1(#1)is working until check (...) (26 years ago, 1-Dec-98, to lugnet.robotics.handyboard)
|
| |
| | Re: HandyBoard and iMac?
|
|
hi eric, i haven't tried any of these products, but they *should* work. the mac hb software uses low level driver calls, so if that stuff is patched and translated to usb, it would work. but if i were you i'd get one and try it on an existing (...) (26 years ago, 1-Dec-98, to lugnet.robotics.handyboard)
|
| |
| | micro-mouse
|
|
Hi, can anyone tell me what should I initialise before I start writting all my program for my robot in a microcontroller. Thank you Chin (26 years ago, 1-Dec-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Re: What needs to be done to get both the Floating point fix & the Smooth PWM?
|
|
Hi I did the port of the smoothpwm stuff into the IC 3.x source code. The Newton Labs ftp site has the smoothpwm files available from: ftp://newtonlabs.com...mooth-pwm/ If someone can get me the code for the FP fix, I'll see if I can get a new pcode (...) (26 years ago, 1-Dec-98, to lugnet.robotics.handyboard)
|
| |
| | Re: HandyBoard and iMac?
|
|
It doesn't even have a floppy drive! -----Original Message----- From: Eric Noyau <noyau@apple.com> To: handyboard@media.mit.edu <handyboard@media.mit.edu> Date: Monday, November 30, 1998 8:39 PM Subject: HandyBoard and iMac? (...) can get one dirt (...) (26 years ago, 1-Dec-98, to lugnet.robotics.handyboard)
|
| |
| | HandyBoard and iMac?
|
|
I'm replacing my aging home PC with an iMac (look at my email address: I can get one dirt cheap!) and I'm wondering if I can use it to pilot my trusty HandyBoard. Anybody have any experience in this area? I'd like to throw away the PC... The iMac (...) (26 years ago, 1-Dec-98, to lugnet.robotics.handyboard)
|
| |
| | time usage
|
|
hello, i am having trouble conserving time in my IC code. i am using an analog() function, and a motor() function. does anyone know how long it takes to execute these functions? also, do the encoder functions that are posted on the website take much (...) (26 years ago, 30-Nov-98, to lugnet.robotics.handyboard)
|
| |
| | What needs to be done to get both the Floating point fix & the Smooth PWM?
|
|
What changes need to be done to get both the floating point fix in IC v. 3.2 beta 1 and the smoother PWM functions? (...) (26 years ago, 30-Nov-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Logic level conversion
|
|
To convert from 0-3 to 0-5 I would suspect that all you need is a 2N2222 NPN transistor with a couple of resistors to bias it. For example: +5volts 100 ohm resistor collector ---...---0-5 input 0-3v output -----1k resistor ----- base emitter 0volts (...) (26 years ago, 30-Nov-98, to lugnet.robotics.handyboard)
|
| |
| | Re: stepper motor standard libary
|
|
check out this page (URL) Message----- From: phillip chia <philchia@singnet.com.sg> To: handybd <handyboard@media.mit.edu> Date: Monday, November 30, 1998 11:45 AM Subject: stepper motor standard libary (...) (26 years ago, 30-Nov-98, to lugnet.robotics.handyboard)
|
| |
| | Logic level conversion
|
|
I have a device that uses 0 - 3V logic levels for the data output. What can I do to convert the output to match the 68HC11's 0 - 5V logic level? Thanks for the help, Dave (26 years ago, 30-Nov-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Good 9V motor source -Reply
|
|
These motors are exellent quality and very powerful the gears are metal and the motors does not exed 300 mA @12V stalled. I currently use the same motors on my robot and had no problems at all. I drive them using the motor drivers on the Handy Board (...) (26 years ago, 30-Nov-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Print to IC's console window
|
|
(...) there is no builtin way of doing this. to get msgs back over the serial line, see the FAQ question at: (URL) Is it true that the handy board can only work when the LCD is plugged onto (...) you need a replacement pcode file to let the HB work (...) (26 years ago, 30-Nov-98, to lugnet.robotics.handyboard)
|
| |
| | Good 9V motor source -Reply
|
|
jameco (www.jameco.com) has several new gear head motors in the 3-12v range with various gear ratios. I ordered two for my latest project and they seem to be solid and up to the task. jameco's latest catalog also has some robotic stuff including (...) (26 years ago, 30-Nov-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Extra output for clocking
|
|
Hugo Robertson: One of the nice things about the 68HC11 chip is its well rounded timming system. Grab your Handy board Technical reference manual and have a look at page 48. PA0-3 are "Input Capture" pins. When the logic level changes (according to (...) (26 years ago, 30-Nov-98, to lugnet.robotics.handyboard)
|
| |
| | Print to IC's console window
|
|
Hi, Does anyone know how to print messages to the IC's console window while running IC.exe. Is it true that the handy board can only work when the LCD is plugged onto the handy board ? It is because when ever it unplugged the LCD from the handy (...) (26 years ago, 30-Nov-98, to lugnet.robotics.handyboard)
|
| |
| | uncondition jump to label
|
|
Hi all, Can we use goto command in IC for unconditional jump to label. If yes, how. If no, any alternative any body using for this. Help would be much appreciated. regards Javaid Iqbal (26 years ago, 30-Nov-98, to lugnet.robotics.handyboard)
|
| |
| | Extra output for clocking
|
|
I have a stepper motor controlled by a Motorola MC3479 driver, which basically allows me to input a clock and the direction from the handyboard and the driver does the sequencing. So I'm using 2 pins from the HB's motor output for controlling the (...) (26 years ago, 30-Nov-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Good 9V motor source
|
|
(...) The Bulldozer kit has a decent gearbox in it, however there are some problems with it. The motors are 3v, so you really need to use an alternate power supply. Also, the tracks are not very good at all and will not last under any real use. the (...) (26 years ago, 30-Nov-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Good 9V motor source
|
|
(...) Try Lego Technic kits. Start with a basic kit like the Giant Model Set (#8277) for $44, and add a couple 9V mini gear motors (#5225) for $17.50 each and a gear assortment for $4.50. Call Lego Shop-At-Home for a catalog (1-800-453-4652). If (...) (26 years ago, 29-Nov-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Choosing a shaft encoder?
|
|
(...) I would have to agree. We evaluated incremental encoders from US Digital. We purchased the "low cost" encoders and paid just over $54 US. -d # rsh -l God universe.all find / -name '*windows*' -exec rm -rf {} \; (26 years ago, 29-Nov-98, to lugnet.robotics.handyboard)
|
