AVT 3225 Quick Start Manual

Universal Stepper Motor
kits
Controller
This controller allows the construction of advanced
mock-up mechanisms, extension of machines and
tools such as milling machines or drills but can also
be useful in photography to build a drive for taking
timelapses and 360º photos.
Controller allows stepper motors bipolar (4-wire) and
unipolar (5-, 6- or 8-wire) to be continuously adjusted
in speed and direction using a single potentiometer.
Circuit description
Range of changes in the speed of the motor axis is
divided into two sub-ranges of 1...10 or 7...100 cycles
per second. This selection can be made using the
appropriate jumper. Microstep control with a
resolution of 1/64 or 1/8 step. Microstep operation
involves rotating the magnetic field of the stator in a
much smoother way than in full and half-step control.
By working with the microstep, smaller steps and
more accurate positioning can be achieved. When the
motor is controlled at low frequencies with a full step
Features
• infinitely variable speed and direction of rotation
(with the same potentiometer)
• speed control divided into two ranges
(1 ÷ 10 and 7 ÷ 100 cycles per second)
• microstep control with 1/64 or 1/8 step resolution
• suitable for bipolar (4 wires) and unipolar
(5 or 6 wires) motors
• timer function, time steplessly adjustable
from 0.5 ÷ 70 s
• supply voltage range (rated motor voltage) 8 ÷ 25 V
• output current up to 2 A per channel (coil)
or half-step, the movement becomes discontinuous
and is characterised by high levels of noise and
vibration. With a small step, the energy provided to
the rotor at one step is only a fraction of the energy
of a full step and is so small that it can easily be
absorbed and cushioned by the internal friction in the
motor and its inertia. No vibration is then generated,
and the motor rotor will not run out at any time
beyond its desired position. Microstep control also
enables much quieter motor operation. The controller
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ASSEMBLY DIFFICULTY
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