02-06-2003, 08:23 AM
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Chief Propeller Head
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Join Date: Jan 2003
Location: Melbourne, Australia
Posts: 269
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and more...
and another!
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02-06-2003, 08:24 AM
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Chief Propeller Head
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Join Date: Jan 2003
Location: Melbourne, Australia
Posts: 269
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second last....
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02-06-2003, 08:25 AM
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Chief Propeller Head
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Join Date: Jan 2003
Location: Melbourne, Australia
Posts: 269
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here you can see the POTentiometer in the background.
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02-18-2003, 07:06 PM
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Chief Propeller Head
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Join Date: Jan 2003
Location: Melbourne, Australia
Posts: 269
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Just wanted to say quickly that I haven't abandoned this project. I just bought a house so things are pretty busy at the moment!
Watch this space!
ph2t.
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02-18-2003, 08:21 PM
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Administrator
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Join Date: Apr 2002
Posts: 3,729
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02-28-2003, 02:12 PM
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Registered User
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Join Date: Oct 2002
Location: NY
Posts: 116
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baited
I'm on it too!
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03-02-2003, 07:48 AM
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Chief Propeller Head
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Join Date: Jan 2003
Location: Melbourne, Australia
Posts: 269
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coolies ejaf, let me know how you go!
ph2t.
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03-04-2003, 03:26 PM
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Chief Propeller Head
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Join Date: Jan 2003
Location: Melbourne, Australia
Posts: 269
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Finallly some new info!
Well I've finally got some video of my exploits to show. 
This first example shows how the speed varies. I don't have a long enough table to show the full range of speed but this is a good enough "proof of concept" thing.
Download the 900K AVI (DivX) here
The second video shows a close up of the rear wheels on the car and how the speed of them vary as I change the "pulse width" on the controller. You can see a green light that varies with intensity as more power goes to the motor. I've been using that as an indicator.
Download the 1.2M AVI (DivX) here
Now I need to confirm the stop/start voltages at the comparator stage and go off and buy some proper resistor values so I can update the schematic with the correct values. Once this is done I willl focus on getting reverse happening as well on the same POT ( as stated before I'll need a daul-gang POT for this).
Let me know what you think....
ph2t.
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03-04-2003, 03:42 PM
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Clones Are Good
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Join Date: Jan 2003
Location: St. George, Utah, USA
Posts: 123
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Absolutely incredible.
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03-04-2003, 03:57 PM
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Chief Propeller Head
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Join Date: Jan 2003
Location: Melbourne, Australia
Posts: 269
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thanks!
please keep the feedback coming, it's the only way I'll learn...
ph2t.
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03-04-2003, 11:42 PM
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Chief Propeller Head
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Join Date: Jan 2003
Location: Melbourne, Australia
Posts: 269
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Controller connections..
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03-04-2003, 11:44 PM
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Chief Propeller Head
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Join Date: Jan 2003
Location: Melbourne, Australia
Posts: 269
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The Birdnest!
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03-04-2003, 11:57 PM
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Chief Propeller Head
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Join Date: Jan 2003
Location: Melbourne, Australia
Posts: 269
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New Video
I managed to increase the sensitivity of the POT to allow for better control of power to the motor.
This video shows a closeup of the wheels and how the speed changes as I turn the POT.
Download the 570K AVI (DivX) here
Here's another shot of the car in motion, this time the speed control is definately evident.
Download the 640K AVI (DivX) here
ph2t.
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03-05-2003, 10:19 AM
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Clones Are Good
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Join Date: Jan 2003
Location: St. George, Utah, USA
Posts: 123
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ph2t - you work for Agilent?
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03-05-2003, 07:06 PM
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Chief Propeller Head
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Join Date: Jan 2003
Location: Melbourne, Australia
Posts: 269
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no, my wife does..........
we're moving house at the moment, so we've got agilent & dell boxes everywhere
ph2t.
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