Subject:
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Re: Add motor driver to RCX
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Newsgroups:
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lugnet.robotics.rcx
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Date:
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Sun, 1 Aug 2004 11:17:43 GMT
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Viewed:
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3722 times
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> can't see any other way of using a bidirectional 300mA PWM
> signal to control a more powerful H-bridge.
Good idea. It will be difficult, though, to determine the differnce between
braked and floating motor setting, or am I wrong? Or maybe one should measure
the resistance on the RCX terminal, when no voltage is put out.
I thought of invading the RCX and pull out the logic signals, and connect then
to another motor driver - but I need to get a cheap defect RCX to test with.
Morten
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Message has 1 Reply:
 | | Re: Add motor driver to RCX
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| (...) Yes, I suggest making an inertia circuit for use with trains, but for cars something else might be better. In RCX float or braked modes the power H-bridge flywheel diodes will brake the motor, but in high power applications, how often is float (...) (20 years ago, 1-Aug-04, to lugnet.robotics.rcx)
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Message is in Reply To:
| | Re: Add motor driver to RCX
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| (...) I'm working on a scheme to do that sort of thing. I propose to use opto-couplers with their LEDs in reverse parallel, connected to the RCX output, and their transistors driving a power H-bridge powered from a separate supply. I can't see any (...) (20 years ago, 31-Jul-04, to lugnet.robotics.rcx)
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