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Could someone please help me with the logic circuit required to drive a 3 volt 10ohm motor in a forward direction only via this IC A relay will be used on the power input or output to control the motor with a photo interrupter unless the stop function is ultra easy via the photo interrupter controlling the logic stop mode BA6845FS Datasheet pdf - Magnetic Disk LSIs > FDD stepping motor driver - ROHM Many thanks in anticipation | |
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| | #2 |
| Look at the first line of the truth table...It tells what pins need to be hi/lo to make the motor go forward......
__________________ Eccentric millionaire financed by 'er indoors | |
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What is the circuit to make the relevant pins go hi and lo
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| | #4 |
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You need two switches as shown, - one connected to pins 4,5 and one to pins 12,13
Last edited by Wp100; 12th June 2009 at 12:16 PM. | |
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So the Pins need to be switched to cause the motor to run and the speed depends on the rate of switching?
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| | #6 |
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Using switches will send the motor at full Vcc speed. If you want to control the motor speed then you have to use PWM or something similar - a way of sending switched pulses to the Driver chip. Searching this forum on Stepper Motor Drivers will give you a better idea - a popular combination is the L297 logic chip with the L293/8 drivers | |
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| | #7 |
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How do I use this photo interrupter circuit (without relay) to pull pins 12/13 (in12/22) low when beam blocked and high when beam not blocked. Silicon Chip Online - Circuit Notebook Last edited by carlson; 13th June 2009 at 05:50 AM. | |
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| | #8 |
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Hmm...No link!
__________________ Eccentric millionaire financed by 'er indoors | |
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| | #9 |
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| driver, motor, stepper |
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