Pololu STSPIN820 Stepper Motor Driver Carrier

This breakout board for the STMicroelectronics STSPIN820 stepper motor driver offers microstepping resolutions down to 1/256 of a step and enables stepless control of a bipolar stepper motor with up to 0.9 A per phase without a heat sink or additional air supply.

Key features:

• Simple step and direction control interface
• Eight different step resolutions with up to 256 microsteps: full step, half step, 1/4 step, 1/8 step, 1/16 step, 1/32 step, 1/128 step and 1/256 step
• The adjustable current control allows you to set the maximum current output, enabling you to use voltages above the rated voltage of your stepper motor to achieve higher step rates.
• Motor supply voltage: 7 V to 45 V
• Can continuously deliver 0.9 A per phase without additional cooling
• Can be directly connected to 3.3V and 5V systems.
• Overheating protection, overcurrent shutdown and short-circuit protection
• 4-layer 2 oz copper PCB for improved heat dissipation
• Exposed, solderable ground pad under the driver IC on the underside of the circuit board
• Module size, pin assignment and interface are in many respects identical to those of the Pololu A4988 stepper motor driver.

Specifications:

• Motor driver: STSPIN820
• Minimum operating voltage: 7 V
• Maximum operating voltage: 45 V
• Continuous current per phase: 0.9 A
• Maximum current per phase: 1.5 A
• Minimum logic voltage: 2 V
• Maximum logic voltage: 5.5 V
• Microstep resolutions: full, 1/2, 1/4, 1/8, 1/16, 1/32, 1/128, 1/256
• Current limiting control: Potentiometer
• Reverse polarity protection?: No
• Header soldered?: No