 | | Re: Sonar limited by signed int... change to unsigned?
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Hi I've the same problem! I've wrote a first program to solve that, but i didn't work. Look at my message from 16. October. (sonar and overflow) If you don't need that accuray, then you can just use the overflow_counter, but this is not at all (...) (24 years ago, 26-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Sonar limited by signed int... change to unsigned?
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Hi, The sonar code is limited to 15' since we are using a signed int. I don't want to change the timer resolution since the multitasker will run slower. The counter only supports an int right? So we can use a signed int and check the overflow flag? (...) (24 years ago, 26-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Re: new to hb :) - Functional Pointers
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no, IC does not support function pointers. fred (...) (24 years ago, 25-Oct-00, to lugnet.robotics.handyboard)
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| |
| | new to hb :) - Functional Pointers
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Can I use function pointers in IC ? (simple question1 :) - ciaran (24 years ago, 24-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Re: Difficulty with timing
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|
For doing interrupts and otherwise using .asm functions in IC, I'm writing a series explaining the why's and how's of doing this on a RugWarrior site at rugwarrior@egroups.com. Sign up and join in. The subject line in the series is "asm-IC." Best (...) (24 years ago, 23-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Difficulty with timing
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|
I am attempting to take in some information into my handyboard through one of the external digital ports, the value I am trying to send in is 128 bits in total length(using serial of course), and then I am wanting to relay this to a windows machine (...) (24 years ago, 23-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Re: that _raw_analog undefined thing
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|
Hi Naomi. The problem is not with the get_char function, I think that is with the analog function. Try to find this files in your IC/LIBS directory: lib_hb.asm lib_hb.c lib_hb.icb Expens.c HBsensor.c The _raw_analog is a rutine and it is defined in (...) (24 years ago, 23-Oct-00, to lugnet.robotics.handyboard)
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| |
| | _raw_analog problem solved... kind of
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|
Dear Mr. Martin, Since the ic libs seem to be different than they were, I found a old copy of old ic download and re-installed once again. Problem gone. Is it that your new _raw_analog won't work with old code? Feeing like a pain in the (...) (24 years ago, 22-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Re: that _raw_analog undefined thing
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|
Dear Mr. Martin, First, thank you for your patience. I'm really sorry to be so much trouble. The Targa thing is easy to explain, so I'll start with that. Yes, the files are all in ZIP archives. When I unzip them, the .icb files show the suffix .icb, (...) (24 years ago, 22-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Re: that _raw_analog undefined thing
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|
At this point I'm not clear exactly what error message you're getting. Would you 1. send a transcript of Interactive C's bootup text, leading to the error? 2. explain the Targa file problem. i don't understand where you'd be seeing this message -- (...) (24 years ago, 22-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Re: that _raw_analog undefined thing
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|
I did that twice with no new results. I'm stuck for other ideas. It doesn't make sense. Naomi (...) them (...) (24 years ago, 22-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Re: that _raw_analog undefined thing
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|
I had already tried that but I did it again at your suggestion, threw everything away and re-downloaded and same problem. It makes no sense to me. Naomi (...) them (...) (24 years ago, 22-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Re: that _raw_analog undefined thing
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|
Hi. You may want to try redownloading and installing your lib files. Get them from (URL) and put them in your \ic\libs\ folder. Fred (...) (24 years ago, 21-Oct-00, to lugnet.robotics.handyboard)
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| |
| | that _raw_analog undefined thing
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|
One more thing about the problem I just posted about my code not compiling because _raw_analog is undefined according to ic. Those .icb files come in from downloading as targa files and the machine seems to think they're photoshop files. Could that (...) (24 years ago, 21-Oct-00, to lugnet.robotics.handyboard)
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| |
| | _raw_analog undefined
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|
Hi, I'm having a problem, maybe a stupid one, I don't know. This is it: Everything was going fine until I started writing a new ic program using serial_getchar. All of a sudden, when I tried to run the program, I was getting all these error messages (...) (24 years ago, 21-Oct-00, to lugnet.robotics.handyboard)
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| |
| | handyboard@media.mit.edu is no longer!
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|
hi everyone, todd lehman and i have completed the transition from handyboard@media.mit.edu to LUGNET. we moved 233 addresses from the MIT list to LUGNET delivery. apparently 7 of you were on both lists at once -- getting double messages. here's (...) (24 years ago, 18-Oct-00, to lugnet.robotics.handyboard)
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| |
| | kitchen electrical appliances.
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|
Dear sir or madame: Elecpro,a joint venture located in China mainland, is specialized in manufacturing kitchen electrical appliances. including rice cooker,electrical pressure cooker etc. In 1998 it passed the ISO9002 of international quality system (...) (24 years ago, 18-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Re: Running 4.5 V motor
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|
(...) If you mean a older lego 4.5V motor, then yes, it will work OK (I suppose). The max. voltage I ever ran a 4.5V battery at was 54V, and it seemed to survive OK. (Nom. 54V, I doubt more than 40 actual volts...I was launching airplanes with (...) (24 years ago, 17-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Running 4.5 V motor
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|
Is it okay to run a 4.5 V motor with the handy board's 9V motor driver as long as the pulse in only on <=50% of the time? (24 years ago, 17-Oct-00, to lugnet.robotics.handyboard)
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| |
| | sonar and overflow
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|
Hi I've got a HB with an Exp-Board and the 6500 Polaroid Sonar Ranging Module. I want to measure distances greater than about 2.7m. So I tried to count the overflow flag at 0x1025 bit 7. But my counter runs to fast, that means it count more than the (...) (24 years ago, 16-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Problem with expansion board or code
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|
I have taken a program for the basic hadyboard analog port and converted it over to us the expasion board analog ports. The only problem is it only read the first port. I have tried it on three of my handyboard with the same result. I have recheck (...) (24 years ago, 16-Oct-00, to lugnet.robotics.handyboard)
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| |
| | DC motor & Photoelectric sensor
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|
Hi, I have a slight problem with my handy board, and I wonder if someone could help me out. I have to use a photoelectric sensor and a DC motor on my handy board, and both have to work at the same time. The sensor requires a 10 volt supply voltage, (...) (24 years ago, 16-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Where can i get a kit to build?
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|
Hello. i want to build a handyboard but live in Scotland, U.K. Can anyone point me towards a location that i will let me buy a handy board in kit form. Cheers. (24 years ago, 11-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Re: Sorry ~ and a question
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|
(...) I've used Karl's sbasic a LOT on a Marvin Green Botboard 2 with great results. Its Basic, plain and simple. Which means its pretty verbose, C is a bit cleaner, but to each their own. I have a Miniboard that I use the freeware ICC11 with and I (...) (24 years ago, 15-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Re: Sorry ~ and a question
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|
Steve, You might try this. It is Karl Lunt's SBasic for the HC11. I haven't used it, but a lot of people swear by it. (URL) Luck, Gary Livick (...) (24 years ago, 14-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Re: Sorry ~ and a question
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|
(...) I think Fred is migrating away from the MIT mailing list. Both still work currently. Anyway, your message to lugnet.robotics.hand...lugnet.com was probably rejected because you hadn't filled out the news-posting setup form[1] yet to let the (...) (24 years ago, 14-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Sorry ~ and a question
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|
Sorry about that eirlier post fokes ~ but I was useing what was posted from Fred, that said for us to use this e-mail address: lugnet.robotics.hand...lugnet.com when posting to the Handy Board list or by way of the Lugnet web page. It seams that (...) (24 years ago, 14-Oct-00, to lugnet.robotics.handyboard)
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| |
| | posts will not go through???
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I've tried 3 times to write to the list ??? keeps getting bounced back to me ~ but I recieve other's posts?? why? (24 years ago, 14-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Help!
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|
Dear Sir, I desperately need a circuit that can drive a single 4 pole steeper motor, with lcd output. Press button, motor turns 180 degrees LCD display shows "Flipped" Press button again motor turns 180 degrees again, display shows "Trickster Ready" (...) (24 years ago, 12-Oct-00, to lugnet.robotics.handyboard)
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| |
| | revised msleep() function for standard IC library
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Based upon a student suggestion in our Autonomous Robotiics course Subject: revised msleep() function for standard IC library here at CWRU, I have written a new, multitasking-friendlier version of the msleep() function. The old version was a (...) (24 years ago, 12-Oct-00, to lugnet.robotics.handyboard)
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| |
| | re: MCI commands in Visual C++
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|
hi everyone, ok this is off the topic but i'm hoping someone can help. i can play .wav files using the Multimedia control interface in Visual c++, the only problem is i can't figure out a way to play without having to rewind the .wav file every (...) (24 years ago, 11-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Re: More on Miniboard woes and woohoos.
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|
The current version of ICC11 has a builtin downloader that talks to MB. Only for W95/NT/... though. ICC11 works with just about ANY HC11 boards, minus lack of support for paging. (...) -- // richard (URL) (24 years ago, 7-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Re: Linux and handyboard help!
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|
I got it!! Thanks! I was loading the wrong library. I had the correct library in the directory, but I hadn't run ic -config and changed it. Thanks again. ___...___ Jesse Dosher, K7DSP University of Washington, Dept. of Electrical Engineering, (...) (24 years ago, 6-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Re: Linux and handyboard help!
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|
Chuck, here's the results from ic -config: jdosher@keynes:~...ic/ic:8# ./ic -config Interactive C for 6811. Version 2.860 BETA (Oct 4 2000) IC written by Randy Sargent and Anne Wright. Copyright 1994. (uses board pcode by R. Sargent, F. Martin, and (...) (24 years ago, 6-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Re: More on Miniboard woes and woohoos.
|
|
(...) I'm hitting two posts at once here... James, It came as a printf.c file with the freeware ICC11 compiler on the Miniboard site. I was curious as it was to be used with the dhry.c code Richard Mann included. However, that dhry.c code when I (...) (24 years ago, 6-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Re: More on Miniboard woes and woohoos.
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|
(...) I didn't think printf() was even available on the shareware (old) version of icc? (24 years ago, 6-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Re: Linux and handyboard help!
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|
Do an ic -config and check to see what library it downloads, make sure its the handyboard library and the 6.270 board library. --Chuck (...) (24 years ago, 6-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Re: More on Miniboard woes and woohoos.
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|
If you upgrade to the commercial version of icc11 not only do you get a downloader that works under windows 9x but also very nice library interface. (disclaimer: I wrote the library :-) In general on embedded systems you _don't_ want to use printf, (...) (24 years ago, 6-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Linux and handyboard help!
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|
Hi all, HELP! I seem to be having some strange behavior using IC under linux. For some unexplainable reason, when using IC under linux to load a file onto the handyboard, the board's digital inputs don't respond. I can take the same board and the (...) (24 years ago, 6-Oct-00, to lugnet.robotics.handyboard)
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| |
| | More on Miniboard woes and woohoos.
|
|
Hi again, Thanks to those who sent suggestions. Running in DOS mode, not W95 dlm does work just fine. Ick. Oh well. Anyway, I thought that 2K of EEPROM would be enough to do something with, and it may be, but probably not in ICC - The printf.c (...) (24 years ago, 6-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Re: Miniboard download random failures
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|
(...) "expected (...) James, Yes, I am running from a DOS window in W9X. Do I have to boot to DOS mode to correct for this? Uhm, I'm a Mac person, so, have patience, how does one boot to DOS instead of Win95? thanks, DLC (24 years ago, 5-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Re: Miniboard download random failures
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|
(...) Are you running DLM from a dos window in Win9x? I've had this problem but it usually stops when I run it in DOS. Just a thought. -Jim Munro <jimmn@xnet.com> (24 years ago, 5-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Freeware ICC11 and bad iasm11.exe?
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|
Me again, I just got the ICC11 freeware from the Miniboard site and installed it, moving the crt.s over as it says to do in the docs, etc. I tried to compile the test compile of icc11 dhry.c printf.c and got a LOT of "phasing" errors, whatever that (...) (24 years ago, 5-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Miniboard download random failures
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|
Hello, I just finished building a Miniboard using the HC811E2 processor. After swapping the Rx and Tx lines on my serial cable the download and reset switch do as the manual says. However, when I use dlm to download a program the bootstrap section (...) (24 years ago, 5-Oct-00, to lugnet.robotics.handyboard)
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| |
| | serial communication
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|
Hi.. I am also facing problem in serial communications. My problem is that I am trying to use the handyboard to drive a modem. I have used a cross-serial cable to connect my handyboard's external serial board to a modem. But whenever I run my app, (...) (24 years ago, 5-Oct-00, to lugnet.robotics.handyboard)
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| |
| | R: communication via serial port
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|
Using java and comm API ? ----- Original Message ----- From: Ray Tang <raytang_1@hotmail.com> To: <handyboard@media.mit.edu> Sent: Thursday, October 05, 2000 4:49 AM Subject: communication via serial port (...) and (...) the (...) a (...) (24 years ago, 5-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Linux and v1.21 handyboard (fwd)
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|
Hi, I've successfully located and compiled the IC files for the Handy Board. I can load and run programs on the board, BUT the digital input(s) are not being "seen". E.g. a simple program like: void test3(){ while (1){ if (digital(10)) printf("10 is (...) (24 years ago, 5-Oct-00, to lugnet.robotics.handyboard)
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| |
| | communication via serial port
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|
Hi, This isn't an off topic question... Has anyone tried programming the serial port (on Linux) to communicate with the Handyboard? I am working on an RF link between the Handyboard and a PC via serial communication, but I don't know much about (...) (24 years ago, 5-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Re: external power
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|
I am by no means an expert on the subject but this is how I did it. First I cut the heavy motor power trace as shown in the FAQ. Next I soldered a four pin female header on top of the expansion board where the expansion board picks up power for the (...) (24 years ago, 4-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Re: Multiple GP2D02 range sensors
|
|
Greetings, (...) From what I could understand from the documentation ((URL) you could use one timing signal for all of them, as long as each sensor is connected to its own output line (to which the sensor would serially output its 8 bit value). (...) (24 years ago, 4-Oct-00, to lugnet.robotics.handyboard)
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| |
| | external power
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|
i was wondering if i can modify the handyboard to accept a secondary power supply for the motors and still use the expansion board at the same time. if there is anything else i need to know or do, i would greatly appreciate hearing about it. thank (...) (24 years ago, 4-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Re: Trouble with handyboards
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|
It is common when polarized caps are put in backwards! Some of those little beggars are hard to see, and easy to get backwards. Other things, such as solder bridges or bad solder joints, can be a problem. Some have even reported finding debris under (...) (24 years ago, 4-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Trouble with handyboards
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|
I am having students in one of my classes build handyboards, and most are working fine, but some are failing. They all passed intermediate tests, but failed when fully assembled. The most common failure mode that I am seeing results in the (...) (24 years ago, 4-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Multiple GP2D02 range sensors
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|
I would like to connect multiple (two to four) GP2D02 range sensors to my handyboard. Will each need to have is own timing signal or can they share somehow. If each does need a signal, how many can I connect? Should I get an Expansion Board? any (...) (24 years ago, 4-Oct-00, to lugnet.robotics.handyboard)
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| |
| | Re: announcing handyboard.com !
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|
Dr. Martin ... Good luck in your new steps down the path of life! -Nick (...) (24 years ago, 2-Oct-00, to lugnet.robotics.handyboard)
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| |
| | announcing handyboard.com !
|
|
Dear Handy Boarders, I'd like to officially announce some changes in the Handy Board world. First, I've left MIT. My last day of work was August 31, 2000. I'm don't have a new job yet, and I'm not sure when (or if) I'll have a normal job. (I do have (...) (24 years ago, 2-Oct-00, to lugnet.robotics.handyboard)
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| |
| | PWM decoding
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|
I sent this email a while back but didn't get any response so I'm trying again. What I am after is a way to decode the pwm output of a standard radio control receiver (the same signals sent to the servos) into a numerical form that can be used (...) (24 years ago, 29-Sep-00, to lugnet.robotics.handyboard)
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| |
| | flow control with Switch
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|
I try to use a "switch" instead o using alot of "if... else". I use the one like a normal C compiler, but it doesn´t work. What can I do?. Daniel (24 years ago, 29-Sep-00, to lugnet.robotics.handyboard)
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| |
| | Found C7
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|
Fred, Thanks for the tip. You're right - it is printed on the board itself. I found it as soon as I put on my glasses. :-) Steve Mosiman (24 years ago, 26-Sep-00, to lugnet.robotics.handyboard)
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| |
| | Re: Capacitor on Sonar Board
|
|
look on the polaroid board itself. it has (or used to, anyhow) a blank space where you could mount a component that is labeled "C7". the cap goes there. if you absolutely cannot find a spot on the polaroid board labeled C7, they must have updated (...) (24 years ago, 26-Sep-00, to lugnet.robotics.handyboard)
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| |
| | Capacitor on Sonar Board
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|
The instructions on connecting the Polaroid Ultrasonic Ranging System to the Handy Board (at (URL) say to be sure and install the 0.1 uF capacitor in the C7 position on the sonar board. It is unclear what is meant here. Is this refering to the (...) (24 years ago, 26-Sep-00, to lugnet.robotics.handyboard)
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| |
| | Out of Office AutoReply: robot contest
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|
I'm out of the office starting Mon, 9/25, returning Thurs., 9/28. Call Mike Kaphon 11325 with urgent matters. Thanks. (24 years ago, 25-Sep-00, to lugnet.robotics.handyboard)
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| |
| | robot contest
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|
Ever wanted to join a robot contest? No events in your area? Give your robot a try at F.IRC. Join the First Internet Robot Contest (F.IRC) for robotics hobbyists around the world. No entrance fee! DATE: Oct 1 – Nov 30 (URL) 20+ attractive prizes: (...) (24 years ago, 25-Sep-00, to lugnet.robotics.handyboard)
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| |
| | Re: Batteries again, sorry
|
|
you're almost right. if you plugged a nimh pack into the HB's charge jack, the external pack would charge the internal batteries. but it would not power the board significantly. this is because the HB's charge jack includes a current-limit resistor (...) (24 years ago, 22-Sep-00, to lugnet.robotics.handyboard)
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| |
| | Batteries again, sorry
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|
This should be my last question in terms of batteries. Assuming that I have nicads powering the HB, what effect would there be if, when the batteries were getting low, I connected a fully charged battery pack (e.g. containing the nimh cells) into (...) (24 years ago, 22-Sep-00, to lugnet.robotics.handyboard)
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| |
| | Re: Batteries again
|
|
in theory this can be a problem. in practice, as long as the nicads are occasionally allowed to fully discharge, they'll last for a good long time in fine condition. fred In your message you said: (...) es. (...) (24 years ago, 22-Sep-00, to lugnet.robotics.handyboard)
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| |
| | Batteries again
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|
As Fred is recommending using nicads due to the constant trickle charge when connected to the mains adapter I have a question regarding the nicad batteries. If the batteries are trickle charged before they are fully discharged (usual practice I (...) (24 years ago, 22-Sep-00, to lugnet.robotics.handyboard)
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| |
| | Re: Possible error in assembly guide.
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|
Are you getting a good ground???...??? If it works.. then hey! RS232 is +10 to -10 but there is room for slop! +7 to -7 will work too!!!!!!! It just won't drive a cable to the max length of the RS232 spec. Most of the time though people just don't (...) (24 years ago, 22-Sep-00, to lugnet.robotics.handyboard)
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| |
| | Possible error in assembly guide.
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|
Near the end of the "interface/charger serial circuit" heading of the "Assembling The Handy Board" guide, it says measure the voltage of pin 6 of the MAX232, I did that and got -9.5 which is correct. Then I connected pin2 of j9 and pin6 of max232 so (...) (24 years ago, 22-Sep-00, to lugnet.robotics.handyboard)
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| |
| | Re: nimh batteries
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|
the issue with nimh is that plain trickle charge is not appropriate. you must remove charge current when the cells are full charge. the HB charge circuit just doesn't do that. i'd really recommend switching back to nicad. fred In your message you (...) (24 years ago, 21-Sep-00, to lugnet.robotics.handyboard)
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| |
| | Re: nimh batteries
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|
Would installing a diode (power diode, >3A ?) into the +ve line of the battery pack be suitable to prevent the power circuitry of the HB from trying to recharge the nimh cells ?. Or do I actually need to do anything at all ?, i.e. the nimh cells (...) (24 years ago, 21-Sep-00, to lugnet.robotics.handyboard)
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| |
| | Spazbotlink
|
|
OOPS sorry, I forgot to give the complete url It's nfn.no-ip.com/spazbot (24 years ago, 21-Sep-00, to lugnet.robotics.handyboard)
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| |
| | Spazbot Homepage updated.. adding more!
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|
OK.. So now that my Explorer code has been perfected and I got more of the servo twitch out of Spazbot, I found time to update the web site! (URL) I registered with the Dynamic DNS nameserver, lets see how well it works. Just before my DHCP lease (...) (24 years ago, 21-Sep-00, to lugnet.robotics.handyboard)
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| |
| | I need help! ! !
|
|
Hi everyone, I'm studying C programing now, but I've had my handy board for more than a year now, I want to now if anyone has a small project, just a motor and some sensors, with all the code I have to put, and how to put the code in the IC program (...) (24 years ago, 19-Sep-00, to lugnet.robotics.handyboard)
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| |
| | Re: nimh batteries
|
|
Should I modify the hb circuit to disable the recharge circuitry if I am using nimh batteries or will the circuitry just not recharge the batteries ?, i.e. no damage to the cells by using them on an 'as-is' board. As an extra question to the list in (...) (24 years ago, 19-Sep-00, to lugnet.robotics.handyboard)
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| |
| | Re: Battery Power and handyboard.
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|
i'm not sure if wiring two nicad packs in parallel is a good idea. the packs would fight each other if either one's voltage varied even slightly from the other. i'd recommend either (1) John's initial suggestion of adding a separate pack solely for (...) (24 years ago, 19-Sep-00, to lugnet.robotics.handyboard)
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| |
| | Re: Fuzzy Logic
|
|
(...) The Motorola reference manual (cpu12rm.pdf at motorola-site) of the 68hc12 (successor of 6811) section 9 has a practical approach to fuzzy logic. The special 68hc12 instructions are easy to implement in 68hc11 code. ntk. (24 years ago, 19-Sep-00, to lugnet.robotics.handyboard)
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| |
| | Re: Battery Power and handyboard.
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|
I am currently using nickel hydride AA cells in two 4-cell battery boxes and so far during my construction and testing of the board they have not needed recharging yet. I didn't have access to a mains power supply most of the time, so after checking (...) (24 years ago, 19-Sep-00, to lugnet.robotics.handyboard)
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| |
| | Re: Battery Power and handyboard.
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Jerry, I really haven't timed how long a battery charge lasts on the Handyboard but I did add a second 9.6v battery pack for the purpose of isolating the motor power from the logic circuit power. I did this to eliminate motor RF interference to the (...) (24 years ago, 19-Sep-00, to lugnet.robotics.handyboard)
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| | Battery Power and handyboard.
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Hi, Quick question. How much runtime are you getting with your Handyboard based robot? With sonar /IRPD pinging once per second and my sensor array being controlled by two servos and my Lego motors pushing the 6 wheel drive rover I am getting 2Hrs. (...) (24 years ago, 19-Sep-00, to lugnet.robotics.handyboard)
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| | Here's Spazbot based on the handyboard
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I put up a website regarding the robot I built with the handyboard. I'll be designing more sensors for it soon, Spazbot is at nfn.no-ip.com/spazbot (24 years ago, 19-Sep-00, to lugnet.robotics.handyboard)
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| | Hall Effect
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You are going to find that it is not the encoders as I thought also. The HB seems to be incapable of reading correctly. I don't know why, but I have been trying for about 3 months with no/or little success. Someone knows, but no one is telling. I (...) (24 years ago, 18-Sep-00, to lugnet.robotics.handyboard)
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| | Sonar and Compass together on expansion board.
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I am working in adapting a PNI compass to the handyboard. And I have a 6500 sonar board connected to the expansion board, here's my idea: Use a Lithium 3.6V battery to save calibration settings after poweroff M/S is jumper selectable Calibrate is (...) (24 years ago, 17-Sep-00, to lugnet.robotics.handyboard)
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| | Pcode benchmark
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The pcode includes a benchmark primitive to see how well the multitasking environment is functioning. Does anyone know how to access this function? George Musser georgejr@musser.com Share information about yourself, create your own public profile at (...) (24 years ago, 15-Sep-00, to lugnet.robotics.handyboard)
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| | Communication Protocol
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Hi everyone, I'm working on a project that implies the communication of the Handy-Board with a PC computer via the serial port. The person who is in charge of programming the software that will run on the PC asked me what is the communication (...) (24 years ago, 15-Sep-00, to lugnet.robotics.handyboard)
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| | IR transmission
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What value resistor should I put in series with the IR led for transmitting from the hb ?. The red led that is present as an indicator is rated for about 5mA (I think they normally run at about 2-3mA) using a 1K resistor (R5) so should I run the IR (...) (24 years ago, 14-Sep-00, to lugnet.robotics.handyboard)
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| | Got some code for you: Sonar on handy in feet & inches!
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Hi, I wanted to see how to convert the sonar hits into feet in inches. Well as the textbook rule goes it looke like it takes 333.333 ticks = 1 inch round trip. Since the timer is running 2,000,000 counts per second. But in real life I had to fudge (...) (24 years ago, 14-Sep-00, to lugnet.robotics.handyboard)
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| | Hall Effect Encoder = sloppy, going optical
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Well the Quad hall effect switch encoder does not give repeable resolution. If I say 14 ticks = right turn (motors going in opposite direction) well. sometime it is on the money, sometime it's not. And I don't have a racer.. I have it running slow (...) (24 years ago, 13-Sep-00, to lugnet.robotics.handyboard)
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| | Re: Rover based on Hanyboard is evolving well!
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Sure.. hey I thought I replied to the list. Here's the picture so far.. note: lugenet doesn't allow jpeg attachments so You will get the image, lugenet will reject them. I am hoping to put up a webpage soon. I've got a few sensors I am designing (...) (24 years ago, 13-Sep-00, to lugnet.robotics.handyboard)
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| | **cant use 100 step mtr prgrm wth...
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Hi, I am trying to use the 100 step motor code and a Hb expansion board. I can get either one of them to work ALONE ONLY. So I can only use the expansion board. OR the 100 step pcode, How do I install both so they dont conflict with one another. (...) (24 years ago, 13-Sep-00, to lugnet.robotics.handyboard)
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| | Problems with microprocesseurs
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Hello, I work with a Handy Board and an other board based on 68hc11E2. The first is master and the second is slave. The SPI communication is OK between 2 boards. The first send the position of servos to the second. At the start, all is OK. After 2 (...) (24 years ago, 13-Sep-00, to lugnet.robotics.handyboard)
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| | Re: Rover based on Hanyboard is evolving well!
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Hi You can only run the counter 4x slower as now. But in this case, the complete HB works 4x times slower, so this isn't a usefull solution. The other possibility is the use the overflow flag and integers. I didn't solve that problem. For more (...) (24 years ago, 13-Sep-00, to lugnet.robotics.handyboard)
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| | Rover based on Hanyboard is evolving well!
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Hi, I managed to build up a pan & tilt platform for my rover out of Servos, I hot glued them together and built a mount for my ultrasonic transducer out of perfboard. Also you need to make a baffle for the rear of the transducer or you do get (...) (24 years ago, 13-Sep-00, to lugnet.robotics.handyboard)
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| | RE: Here's the Rover with handyboard
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Please let us out of your list. ---...--- Click here for Free Video!! (URL) Original Message ----- From: T. Gathright <terrygathright@home.com> To: Jerry Normandin <jerrynormandin@ne.m...aone.net>; <handyboard@media.mit.edu> Sent: Monday, September (...) (24 years ago, 12-Sep-00, to lugnet.robotics.handyboard)
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| | Peekword returns an int... can I typecast in Interactive C?
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Hello, my problem is that peekword returns an int. I need a long. Is there a way around this in Interactive C??? (24 years ago, 12-Sep-00, to lugnet.robotics.handyboard)
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| | Interactive C question can you cast an int to a long?
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Hi, I have an interactive C question, I'd like to return this: return peekword(0x1014) - start_time; as a long.. since this is why there's a distance limit in the sonar.c code. Can I return this as a long? (24 years ago, 12-Sep-00, to lugnet.robotics.handyboard)
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| | possibly the way the driver is written limiting sonar range?
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Hi, I was playing with my handyboard's sonar.. The distance limitation is in the code, since we are using integers we are limited to -32,778 to 32,768.. and that's why I am at @15 ft limit. After we change the sonar code to longs the problem is (...) (24 years ago, 12-Sep-00, to lugnet.robotics.handyboard)
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| | Here's the code I wrote so far, any ideas why my Polaroid 6500 has only 15ft range?
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Hi everyone, Here's some code that I have so far. I have no clue why I only get 15' range out of my Polaroid 6500. I did not get the usual fastener that clasps the tranducer into place, could that do it? My tansducer is mounted on "sensor array" (...) (24 years ago, 12-Sep-00, to lugnet.robotics.handyboard)
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| | Polaroid 6500 ranging.. only getting 15ft range!
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Hi, How do you get 35ft range out of the handyboard? I get a negetive number when hitting an object over 15ft away! Does anyone else have this problem? Can I adjust it somehow? Thanks! (24 years ago, 12-Sep-00, to lugnet.robotics.handyboard)
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| | handy board
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Hello, I am in need of some assistance please. I am trying to have a portable omni view digital camera take compressed mjpeg images and send them over a modem connection. To do this I believe I would need a handy board. Another characteristic of it (...) (24 years ago, 12-Sep-00, to lugnet.robotics.handyboard)
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