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Precision bi-directional brushless dc motor w/ driver


0-2700 RPM. Voltage controlled input. Maybe possible to PWM speed control
I would consider a resister network like that of a keypad or
using 74x164 serial-in parallel-out shift register / multiplexer etc.
Pin 1 = Motor drive enable 0 = Off 1 = On -
Pin 3 = Direction control 0=CCW, 1=CW
Pin 4 = Output from sensor A 2.5V center
Pin 6 = Gnd (internally connected to pin 2)
Pin 7 = Output from sensor B 2.5V center
Pin 8 = Output from sendor C 2.5V center
Connect a 1.5K resistor between pins 2 and 3 to ensure reliable
switching, else pin 3 floats at 1.7V and the motor is unstable.
It may be possible to pulse width modulate the motor enable (pin 1) to
I used a 300 Ohm pot for speed control.
There is also a a circuit for RPM display on LEDs I know of & have used for PIC Micros.
What you see is what you get "WYSIWYG"
Otherwise items will not be combined
All items untested unless otherwise stated.



Precision bi-directional brushless dc motor w/ driver