 | | Handyboard low voltage motor control —Paul Dito
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| | | Hi All, Most of you guys seem to want more power to control motors, well, I want to go the other way. I'm looking to drive 1.5v motors with the handyboard. The lowest voltage the L293 can take is 4.5v (Vmin of Vcc1), and that still has my motors (...) (25 years ago, 18-Oct-99, to lugnet.robotics.handyboard)
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| | | | | Re: Handyboard low voltage motor control —Gary Livick
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| | | | How about a resistor in series? Gary Livick (...) (25 years ago, 18-Oct-99, to lugnet.robotics.handyboard)
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| | | | | | Re: Handyboard low voltage motor control —Paul Dito
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| | | | That'll work, of course, but that also means I'll be dissapating about 8 volts at .5A through the resistor... Gary Livick wrote in message <380B55B1.1C3703C4@p...ll.net>... (...) to (...) still (...) but (...) (25 years ago, 18-Oct-99, to lugnet.robotics.handyboard)
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| | | | | | Re: Handyboard low voltage motor control —Gary Livick
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| | | | Good point... There is another way. You can build your own h-bridges using mechanical relays and maybe a few diodes. They drop zero volts, which is good. However, you obviously can't PWM the things. If you just want rudimentary speed control, you (...) (25 years ago, 18-Oct-99, to lugnet.robotics.handyboard)
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| | | | | | Re: Handyboard low voltage motor control —Paul Dito
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| | | | Well, I went with separate h-bridge to maintain PWM and it turns out that even though the motors are geared down, they still don't have enough torque to haul around all the batteries. Looks like I'll stick with 9v motors... Thanks for the (...) (25 years ago, 20-Oct-99, to lugnet.robotics.handyboard)
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