 | | Re: HELP!! Dead board
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You shouldn't be seeing voltages over 5v anywhere in the logic circuits. Test if the 7805 is producing more than 5v, or if the RAM circuit (which is on a separate regulator) has more than 5v. In practice I'd rarely see more than a 0.2v error from (...) (24 years ago, 30-Nov-00, to lugnet.robotics.handyboard)
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| | HELP!! Dead board
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Hi, I've a dead board here and don't know what to do anymore... The following is happening: I can download the pcode to the board, but when I then try to reset the board, the IC message won't show up on the display, there won't be any beep, and IC (...) (24 years ago, 29-Nov-00, to lugnet.robotics.handyboard)
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| | expansion board ?
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i am using the handyboard/expansion board and am using servos for movement i want to be able to have the motors stop in response to a pushbutton being pressed. the button is hooked to the digital in (port 7) on the handyboard here is my code for the (...) (24 years ago, 27-Nov-00, to lugnet.robotics.handyboard)
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| | sbasic11
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has anyone used sbasic or any other form of basic on the handyboard and can they share there info on how to set it all up thanks Justin (24 years ago, 27-Nov-00, to lugnet.robotics.handyboard)
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| | Connect a wireless modem to HandyBoard?
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Hi Everyone there! I am relatively new to the HandyBoard ( and for that matter, the robot scene in general ) I would like to know if anyone out there can advise me on whether it might be possible to connect a wireless modem to a HandyBoard? I was (...) (24 years ago, 27-Nov-00, to lugnet.robotics.handyboard)
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| | handyboard ?
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can someone please post some example code of how to read the state of a pushbutton connected to one of the expansion board inputs i wish to use it to stop a motor routine also can anyone recommend a good cheap stepper controller for use with the (...) (24 years ago, 26-Nov-00, to lugnet.robotics.handyboard)
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| | Fun with HTML
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I've started playing around a bit with HTML and I've been creating a web site of sorts. I invite you to visit it at (URL) so far there isn't enough content but I'm more able to update this site than my previous one. --Chuck (24 years ago, 26-Nov-00, to lugnet.robotics.handyboard)
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| | Problems with sonar
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Hi I've tried to use the overflow flag to measure distances greater than 2.7m with the polaroid sonar. I've added the following line to the sonar_init(): bit_clear(0x1024,0x80); /* clear TOI, no Timer Overflow Interrupt */ I think the overflow flag (...) (24 years ago, 23-Nov-00, to lugnet.robotics.handyboard)
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| | serial comm again
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Hi. Thanks to all who had answered... unfortunately, I am still facing difficulties..(maybe i am not good enough!) Anyway, I have another question to ask... When I tried to do a loop-back test by connecting the TD and RD pin of the handyboard (...) (24 years ago, 23-Nov-00, to lugnet.robotics.handyboard)
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| | Re: Reading encoder forward/reverse
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(...) Hello Richard I think you should use a Gray code (consecutive decimal numbers are represented by binary expressions that differ in the state of one, and only one, one bit. Synonym: reflected or mirrored code). Its very simple for two bits: 00 (...) (24 years ago, 22-Nov-00, to lugnet.robotics.handyboard)
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| | Reading encoder forward/reverse
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I would like to tell which way my optical incremental encoder is turning. It has two outputs, one offsett from the other. Is there any library around that can count and give direction? (the "encoders.c" functions seem to only count regardless of (...) (24 years ago, 21-Nov-00, to lugnet.robotics.handyboard)
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| | Re: Some Sonar Data
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Excellent work! Gary Livick (...) (24 years ago, 20-Nov-00, to lugnet.robotics.handyboard)
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| | Some Sonar Data
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A simple experiment I was doing earlier today showing the effects of delay between multiple pings of the sonar (to let echos die down, etc): (URL) a by-product, it has some kind of neat pictures showing the accuracy and such of the sonar, if you're (...) (24 years ago, 19-Nov-00, to lugnet.robotics.handyboard)
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| | Re: GP2D02 driver affecting motor outputs?
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Well, since I wrote it, I suppose I should fix it. I need a day or so. Gary Livick (...) (24 years ago, 18-Nov-00, to lugnet.robotics.handyboard)
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| | GP2D02 driver affecting motor outputs?
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I connect a motor to a motor output on my handyboard and it works fine. I start running the program found here: (URL) program continuously collects data from a GP2D02 sensor. A motor that is working before I start collecting data starts running at (...) (24 years ago, 18-Nov-00, to lugnet.robotics.handyboard)
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| | Commapi
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I've been trying to use commapi to have my pc communicate with the HB. It seems to be more or less set up properly as I can send characters to the HB. There's a little oddity there as it seems to send an extra character to the HB. If I have just a (...) (24 years ago, 16-Nov-00, to lugnet.robotics.handyboard)
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| | polaroid sonar again
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I think I have more of a problem with the my ranging module than before. I'm getting 2000 to 3000 ticks regardless of what's in front of the transducer. Earlier, I was getting various values. I did accidently turn the thing on without the tranducer (...) (24 years ago, 12-Nov-00, to lugnet.robotics.handyboard)
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| | Re: polaroid sonar
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(...) In my experiments I have found that in using the Polaroid boards you have to be very careful of ground loops and making sure you give adequate time for the board to reset and that cap on the power line to recharge. I used to get a weird value (...) (24 years ago, 12-Nov-00, to lugnet.robotics.handyboard)
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| | polaroid sonar
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I just hooked up a polaroid sonar module with the suggested capacitor, and it does work for the most part. Unfortunately about every 5th value (using the display_sonar function) is markedly different that the others, half the reading or so. Is this (...) (24 years ago, 12-Nov-00, to lugnet.robotics.handyboard)
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| | An analysis of Rich Drushel's lock_process() errors
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An analysis of lock_process() errors. My lock_process(float sec) library code has some bugs in it. After some digging around in the pcode assembly source, and some test programs in IC, I have determined the cause of the bugs. What to do about them, (...) (24 years ago, 11-Nov-00, to lugnet.robotics.handyboard)
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