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 Sorry, during my fluid mechanics lectures on drag I must have been designing a gearbox in my mind. FRC season will do that. - sanddrag [more] |
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You can easily generate a PWM signal to drive a Victor, Jaguar, or Talon using the RTS & DTR pins of the RS232 serial port on an old junker laptop with an early Pentium or 486 processor.
Attached Files
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Code Examples 2012-08-09
Code Examples 20120809.pdf
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uploaded: 08-09-2012 05:59 PM
filetype: pdf
filesize: 45.98kb
downloads: 207
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Demo Program (source code) 2012-08-09
PWM DEMO 20120809.zip
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uploaded: 08-09-2012 06:03 PM
filetype: zip
filesize: 1.61kb
downloads: 81
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Ready-to-run (compiled) app 2012-08-09
PWM-GEN 8-9-2012.zip
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uploaded: 08-09-2012 06:04 PM
filetype: zip
filesize: 128.97kb
downloads: 74
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Make a DOS boot diskette 2012-08-10
Make a DOS boot diskette 20120810.pdf
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uploaded: 08-10-2012 04:59 PM
filetype: pdf
filesize: 74.03kb
downloads: 76
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RTS signal conditioning 2012-08-09
Signal conversion circuit 20120809.pdf
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uploaded: 08-11-2012 06:09 PM
filetype: pdf
filesize: 118.41kb
downloads: 251
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PWM Signal Generator 2012-08-13
PWM Signal Generator 2012-08-13.pdf
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uploaded: 08-13-2012 04:44 PM
filetype: pdf
filesize: 71.35kb
downloads: 221
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FreeDOS Bootable USB 2012-08-13
FreeDOS boot USB 2012-08-13.pdf
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uploaded: 08-13-2012 05:38 PM
filetype: pdf
filesize: 81.33kb
downloads: 121
Discussion
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07-18-2012 04:33 PM
Ether
Re: paper: RC Servo Signal Generator
There was a small error in the Code Examples so I updated that file.
I also uploaded a complete working demo program (full source code) that can serve as a starting point for creating your own app. Just add a user interface. Or, you can just use the TP7 IDE as the user interface.
Remember: this program works properly ONLY on DOS machine, where the app has full and exclusive control of the machine and direct access to the hardware.
It will not work properly in a "DOS Window" under Windows.
07-24-2012 06:52 AM
Ether
Re: paper: RC Servo Signal Generator
I just uploaded a beta-test version of a ready-to-run app which supports both the RTS and DTR pins of the RS232, so you can generate two independently-adjustable PWM signals with one RS232 serial port:
http://www.chiefdelphi.com/media/papers/2702
Note that you can drive up to 4 motor controllers (in parallel) with each signal.
Screenshot of the user interface. I'd be interested in constructive feedback from users.
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