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 D/A converter keypad dc motor control

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abicash Posted - Sep 15 2006 : 12:08:45 AM
looking for following
1. Want to control speed of 12v/100ma dc motor.
2. 3nos thumbwheel switches set decimal count 000-999 where 999=12v.
3. Corresponding voltage is fed to motor after a start push 2 on switch is pressed.
I can drive the motor by transistors or pwm but dont know anything bout d/a conversion.
Anyone ?
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Aaron Cake Posted - Sep 15 2006 : 3:45:36 PM
Microcontroller that looks at the input from the switch and then does PWM on an output to control the motor.

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