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How do you drive a NEMA 17 stepper motor using A4988 driver?
Method 1:
- Take a look at the datasheet for your stepper motor.
- Put the driver into full-step mode by leaving the three microstep selection pins disconnected.
- Hold the motor at a fixed position by not clocking the STEP input.
- Measure the voltage (Vref) on the metal trimmer pot itself while you adjust it.
How do you increase torque on a NEMA 17 stepper motor?
The effect of stack length in size 17 motors can be seen in the nearby image. These NEMA size 17 step motors have different stack lengths. Stack lengths are increased by adding more rotor and stator sections. This increases torque while maintaining motor width, height and mounting dimensions.
How do you run a stepper motor smoothly?
Smooth operation at low speeds with consistent torque is possible using stepper motors and drives. It is accomplished by ensuring the drive and motor work together, and often by using microstepping. Microstepping is driving the stepper motor such that each pulse does not complete a full step.
How does NEMA 17 work?
NEMA 17 is a hybrid stepping motor with a 1.8° step angle (200 steps/revolution). Each phase draws 1.2 A at 4 V, allowing for a holding torque of 3.2 kg-cm. NEMA 17 Stepper motor is generally used in Printers, CNC machines and Laser Cutters.
What voltage is a stepper motor?
Stepper motors have a rated voltage and current. A typical stepper motor like our NEMA 17 might have a rated voltage of 2.8 Volts and a maximum current of 1.68 Amps. This basically means if you hook it up to 2.8 Volts it will draw 1.68 Amps.
How can you improve the accuracy of stepper motors?
With a standard, non-cumulative, accuracy of ±5 percent, the first and most logical way to increase accuracy is to microstep the motor. Micro stepping is a method of controlling stepper motors that achieves not only a higher resolution but smoother motion at low speeds, which can be a big benefit in some applications.
What is a NEMA 17 stepper motor?
A NEMA 17 stepper motor is a stepper motor with a 1.7 x 1.7 inch (43.18 x 43.18 mm) faceplate. The NEMA 17 is larger and generally heavier than for example a NEMA 14, but this also means it has more room to put a higher torque. However, its size is not an indication of its power.
What voltage is a NEMA 17 stepper motor?
A typical stepper motor like our NEMA 17 might have a rated voltage of 2.8 Volts and a maximum current of 1.68 Amps. This basically means if you hook it up to 2.8 Volts it will draw 1.68 Amps. If you try to run it at a higher voltage it will draw more current and get excessively hot.