Recommend me a Motor Contoller
can anyone recommend me a 20+ amp motor contoller, that supports 2 motors (individual motor control) and supports reverse, is (relativley) inexpensive, and that is interfaceable with my bs2? i cant seem to find any at a resonable price...
Comments
http://www.parallax.com/detail.asp?product_id=29144
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Chris Savage
Parallax Tech Support
csavage@parallax.com
Dave
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Dave Andreae
Tech Support
dandreae@parallax.com
Http://www.parallax.com
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Take a look at the L298 chip (data sheet attached). Pay attention to Figure 6 in the applications section.
Regards,
Bruce Bates
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Chris Savage
Parallax Tech Support
csavage@parallax.com
I've used a few LM298's in the past. You can feed the PWM signal into the enable pin to control speed. I haven't tried the BS2 method of PWM yet·(it's not "true" PWM) so I don't know if it will work. Another thing about the LM298 is you·will NEVER get the full rated current output, even with -1VDC on the sense pin. If you try to pull more than 25% of rated current through an LM298 you will need a good sized heat sink.
Havokane, Watcha makin that needs 20 amps?·
I'm building a semi-autonomous boat/submarine. As soon as I get more of it assembled I'm going to post in the projects section. The HB-25 and the BS2 are going to control the·main propulsion which is two ~10A trolling motors. I've designed but not yet built a self winding reel system, when the boat submerges the antenna array will stay on the surface and be connected to the vessle by cables at a constant tension.
http://cgi.ebay.com/Brushless-Motor-Speed-Controller-TP-70A-ESC_W0QQitemZ120026322556QQihZ002QQcategoryZ34056QQrdZ1QQcmdZViewItem