 | | Analog ports....
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Hello to all, I've run into a small problem with my analog ports. I've got 3 IR transmitter/recievers hooked up to 3 ports, and the "levels" that they are reading is stuck. What I mean is that if I print out to the LCD screen the current values of (...) (28 years ago, 25-Mar-97, to lugnet.robotics.handyboard)
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| | Odometers
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Has anyone used odometers to make their bot drive in a straight line. I am trying to do this and it seems like the delay in reading the encoder values from 1 line to the next causes problems. I have tried taking two results after sleeping for 0.3 (...) (28 years ago, 24-Mar-97, to lugnet.robotics.handyboard)
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| | COX SERVOS
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I have a 10-14yrold COX micro servo that will rotate freely in both directions when applied straight DC. Does anyone know if these older servos operate differently than PWM. This would be a great solution vs hacking my new servos. (28 years ago, 24-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Adam's schematic / sending large files to the list
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Everyone.... I would like to take this moment to appologize to those who were inconvenienced by my email. It was only after I had sent it that I realized the implications. oops! I will, however, submit the code that I use (it's simple) and some (...) (28 years ago, 24-Mar-97, to lugnet.robotics.handyboard)
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| | Re: Vector2X
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(...) I will try to get a package together tonight that will have to schematics, and the icb file as well as some C demonstration code. I thought I damaged my compass a week ago, but it turns out I broke a wire. I have a schematic, and all the (...) (28 years ago, 24-Mar-97, to lugnet.robotics.handyboard)
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| | Adam's schematic / sending large files to the list
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Hi all, a few reactions to Adam's multi-sonar schematic: * looks like a clever idea and it's an extremely clearly drawn schematic. I put a copy up at (URL) Adam, if you would ZIP up and e-mail me the code you use to drive this, along with any other (...) (28 years ago, 24-Mar-97, to lugnet.robotics.handyboard)
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| | System time &square waves
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I am still having trouble with the my program and thought that I might ask whether there is any code or does anyone know of a way to identify the frequency of digital square waves with the handy board. Joe Martin joema@mpx.com.au (28 years ago, 24-Mar-97, to lugnet.robotics.handyboard)
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| | Thanks.
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Hello, Thank you to everyone for all the help with the Handy-Board. In particular, thank you Fred Martin and Randy Sargent. Keep up the good work. -Luke (28 years ago, 23-Mar-97, to lugnet.robotics.handyboard)
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| | Re:Re:System time
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Pandit, It turns out that we where both wrong about your program.It does not work because the time over which d adds 1 to itself is not defined the program does not count at a rate of one unit per millisecond.I have in fact found that it will at (...) (28 years ago, 23-Mar-97, to lugnet.robotics.handyboard)
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| | Re: your mail
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The LCD pins are just the databus, and some strobes. No power here, just information. And not much possibility for PWM either, since databus timing is constrained by the CPU bus timing. Best to hook something stuctured to the databus, ie the (...) (28 years ago, 23-Mar-97, to lugnet.robotics.handyboard)
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| | 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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