MP6500 Stepper Motor Driver Carrier, Potentiometer Current Control

This breakout board for the MPS MP6500 microprocessor-controlled BPS stepper motor driver is Pololu's newest stepper motor driver. The module has a pinout and interface very similar to those of Pololu's popular A4988 carriers, so it can be used as a drop-in replacement for those boards in many applications. The MP6500 offers microstepping down to 1/8 step, operates from 4.5 V to 35 V and can deliver up to approximately 1.8 A per phase continuously without a heatsink or forced airflow. This version of the board uses an onboard trimmer potentiometer to set the current limit. The board is shipped with 0.1" male headers, which are not soldered.

Features:

• Simple step and direction control interface
• Four different step resolutions: full step, half step, 1/4 step and 1/8 step
• The adjustable current control lets you set the maximum current output, which allows you to use voltages above your stepper motor's rated voltage to achieve higher step rates
• Potentiometer current control - this version uses a built-in trimmer potentiometer to set the current limit up to 2.5 A
• Internal current sensing allows the driver to automatically adjust the decay mode to ensure a smooth waveform
• 4.5 V to 35 V supply voltage range
• Can deliver up to 1.8 A per phase continuously without additional cooling
• Built-in regulator (no external logic power supply required)
• Can be connected directly to 3.3 V and 5 V systems
• Over-temperature shutdown, over-current shutdown, short-circuit protection and undervoltage lockout
• 4-layer, 2 oz copper PCB for improved heat dissipation
• Solderable ground pad under the driver IC on the underside of the PCB
• Module size, pinout and interfaces match those of the Pololu A4988 stepper motor drivers in most respects

Specifications:

• Minimum operating voltage: 4.5 V
• Maximum operating voltage: 35 V
• Continuous current per phase: 1.8 A
• Maximum current per phase: 2 A
• Minimum logic voltage: 2.1 V
• Maximum logic voltage: 6 V
• Microstep resolutions: full, 1/2, 1/4 and 1/8
• Current limit control: potentiometer
• Reverse-voltage protection?: No
• Pin headers soldered?: No