 | | Re: your mail
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What is it that you want to accomplish by doing this? Drive your motors? According to the CPU and Memory diagram, the LCD control lines come directly from the HC11 microprocessor. The voltage is generally about 5 or so, but the lines cannot output (...) (28 years ago, 23-Mar-97, to lugnet.robotics.handyboard)
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| | (no subject)
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HI! I had an Idea..... What would happen if I were to wire some motors to the LCD output (to screen)? But for me to really do that, I need a couple of things answered: 1) How many volts does it run at? 2)Did anyone ever try this? Advice? Thanks.... (...) (28 years ago, 22-Mar-97, to lugnet.robotics.handyboard)
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| | Vector2X
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I have just recvd and read over the docs of my newly acquired Vector2X compass. I would greatly appreciate any assistance that an experienced user might have to offer. Although it looks as though the wiring overhead is minimal, I would like to (...) (28 years ago, 22-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Runtime Error 3
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Peter, Are you familiar with C in general? I think if you put a static value in the [] of the array declaration and fix the increment of f (f+1) to f++ or f=f+1, then you'll be OK. Try it. ---...--- Adam B. Cox check out my web page Computer (...) (28 years ago, 22-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Re:Re:System time
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Hi Joe, I kind of guess that this result will come up as I mentioned that I do not fully understand the intention of the program. I would suggest that you put sleep(onemilisec); in the time keeping process it self in side the while(1) loop for the (...) (28 years ago, 22-Mar-97, to lugnet.robotics.handyboard)
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| | Re: SONARS GALORE!!!
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HI Adam, Please post your schematic as you mentioned. I am interrested. Thank you, -Pandit ---...--- (...) (28 years ago, 22-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Re:system time
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Hi Joe, I am glad that you get it going. For casting, you can cast variables as well. Again, it is best to avoid any type casting if you can. I would not encurage any one to do much of casting if not necessary. Some programing language makes this (...) (28 years ago, 22-Mar-97, to lugnet.robotics.handyboard)
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| | Some answers on Re: Sonar and the handyboard
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Adam and Tom have been exchanging quite a bit of mail on the topic of Ultrasonics and the Handyboard. A lot of good information has come to light as well as some misinformation. I've spent some time figuring out just what is what, and this is the (...) (28 years ago, 22-Mar-97, to lugnet.robotics.handyboard)
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| | Re:system time
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Pandit, Thanks a lot for your help.I had already thought that it could be the board running out of resources that caused the problem but I am not very experienced with programing.I agree with your improvements on the program and will implement them (...) (28 years ago, 22-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Runtime Error 3
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Hi Peter, Well let me give it a shot, without actually downloading it to the Handy Board. It should go something like this: /* GLOBALS */ int num_sensors = /*put the number of analog sensor inputs you want*/ void main() { int sensors[num_sensors]; (...) (28 years ago, 22-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Sonar and the handyboard
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Tom, I put the cap in too - never noticed much defference. It must just be for some minimal filtering of noise. I don't know how well you know Ben, but it sounds as though you will probably be fixing this one solo, eh? Do you have manuals? I'll look (...) (28 years ago, 21-Mar-97, to lugnet.robotics.handyboard)
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| | Runtime Error 3
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I'm kind of new to IC and I don't know how to deal with all the errors yet. I wrote a simple code to record sensor inputs every 15 minutes. This is the code I wrote: void main() { while(1) { int x[]; int s=analog(0); int f=0; s=x[f]; sleep(900.0); (...) (28 years ago, 21-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Sonar and the handyboard
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(...) I wouldn't think so. I am looking in Kents documentation, and sure enough, there is something about putting a resistor on BINH. Also something about putting a cap in C7 on the ranging board. I'll play with things tonight. (...) Good thinking (...) (28 years ago, 21-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Sonar and the handyboard
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Tom, You mentioned that the INIT has the 330ohm. I'm pretty sure it's the BINH and NOT the INIT that should have the 330ohm. Reread Kents documentation. I don't think you would have damaged the unit in this short of time. Like I've mentioned on many (...) (28 years ago, 21-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Sonar and the handyboard
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Ahh... This sounds right from when I had the same problem. I just forgot about the disconnecting of the BINH. Mainly because it was accidental at the time. Anyways, the point I wish to make is that you have a bad ranging unit. This symptom is (...) (28 years ago, 21-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Sonar and the handyboard
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Thanks, I followed Chuck M's advice, and disconnected the BINH, and the thing words, with 23" as the minimum distance. (...) I would have to possibly agree. I noticed in your earlier mail you have suggested putting a 330 ohm resistor between INIT (...) (28 years ago, 21-Mar-97, to lugnet.robotics.handyboard)
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| | SONARS GALORE!!!
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For those who are interested..... I have recently developed a way of signalling 4 sonars from the HB using a logical switching circuit controlled by one ranging board and another board developed to switch which transducer is being signalled by the (...) (28 years ago, 21-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Sonar and the handyboard
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Tom, I purchased 2 OEM kits (4 ranging units w/transducers) From this I had 3 bad ranging units. You'll notice a socketed chip on the PCB. I would suspect that this chip is suspect to failure. Anyways, in order to solve your problem, I would suggest (...) (28 years ago, 21-Mar-97, to lugnet.robotics.handyboard)
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| | Interactive C Sample Source
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Is there any sample source avail on the web/ftp of IC routines. Like generic routines for object avoidance, navigation, light following, sound following stuff like that. (...) ___...___ Victor Clark Xerox Document & Data Services Xerox Corporation (...) (28 years ago, 21-Mar-97, to lugnet.robotics.handyboard)
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| | Re: New motor drivers
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Yes. I use 12 V motors with these chips. The 1A ones. ---...--- 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 (...) (28 years ago, 20-Mar-97, to lugnet.robotics.handyboard)
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