 | | Reading PWM Servo Signal into Handyboard
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I need to read the pulse width modulated signal put out by a radio control receiver into the Handyboard. I have thought about using a radio control PWM to electric motor speed controller and feeding this into an analog in port on the Handyboard but (...) (24 years ago, 22-Jan-01, to lugnet.robotics.handyboard)
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| | Re: Trouble working with PORTC
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Yes, I'm answering myself. I now notice that Port C is being used by the LCD. Therefore, I'm guessing that this is part of the problem (the whole problem, a really big problem?). I'm still curious as to how Port C might be shared - is it still (...) (24 years ago, 20-Jan-01, to lugnet.robotics.handyboard)
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| | Trouble working with PORTC
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I'm having a little trouble working with Port C on my 68hc11. A little background: the 68hc11 is part of a rug warrior pro. This board brings Port C out to an expansion socket which I can access. I'm generally using Interactive C 3.1 to work with (...) (24 years ago, 20-Jan-01, to lugnet.robotics.handyboard)
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| | Re: Sonar and the expansion board.
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Hi, Try some of these techniques from the sites list here and see what you get. If you still get the errors in readings then you should assume that there is a problem with the board. Fortunately all chips on the board are replaceable and there is a (...) (24 years ago, 20-Jan-01, to lugnet.robotics.handyboard)
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| | Sonar and the expansion board.
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I am having quite a problem with getting the proper readings from the sonar. Here is a little background on what I have tried. I have a total of four driver boards and four sonar modules. I have soldered on the non-polarized tantalum 0.1uF (...) (24 years ago, 20-Jan-01, to lugnet.robotics.handyboard)
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| | Re: downloading the pcode during assembly
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It is possible that the pins of the 68HC11 chip are not making good contact in the socket. To fix the problem remove the chip, take a sewing push pin and make a hook in the tip. Use it to very gently pull out each pin connection in the CPU socket. (...) (24 years ago, 16-Jan-01, to lugnet.robotics.handyboard)
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| | 2x20 Optrex LCD for my handyboard
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Hi, I recently purchased a 2x20 LCD pannel for my Handy Board, I need to know how to modify the pcode to take advantage of the new screen, Can anyone help? (24 years ago, 16-Jan-01, to lugnet.robotics.handyboard)
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| | as11_ic on unix now mailing to make icb properly.
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Hi, I am on the unix platform for development. I am working on 1-wire network code for the handyboard (in assembly) I'm getting Unrecognized Mnemonic errors and value truncated errors. I then decided to assemble speed.asm, and noticed I get the same (...) (24 years ago, 16-Jan-01, to lugnet.robotics.handyboard)
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| | Re: hacking servo motors
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(...) Hi all, why so complicated ? Use a pair of gears to double the turn ability. We had the same problem (to find a beacon) and succesfully build it. I guess you don't have to be 1 degree accurate, or ?? I think 2 degrees will work. (You don't (...) (24 years ago, 16-Jan-01, to lugnet.robotics.handyboard)
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| | Re: hacking servo motors
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It's just an ordinary motor after you modify it to take out the feedback device, and you have no idea of where it is pointing at any time. Maybe you could have the robot turn in a circle to find the beacon? Or use a small stepper motor? You can (...) (24 years ago, 15-Jan-01, to lugnet.robotics.handyboard)
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