This breakout board for the MPS MP6500 microstepping bipolar stepper motor driver is Pololu’s latest stepper motor driver. The module has a pinout and interface that are very similar to that 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 up to 1/8-step microstepping, operates from 4.5 V to 35 V, and can deliver up to approximately 1.8 A per phase continuously without a heat sink or forced air flow. This version of the board allows for dynamic current limit control through a pair of digital inputs, and the board ships with 0.1″ male header pins included but not soldered in.
Features:
Simple step and direction control interface
Four different step resolutions: full-step, half-step, 1/4-step, and 1/8-step
Adjustable current control lets you set the maximum current output, which lets you use voltages above your stepper motor’s rated voltage to achieve higher step rates
Digital Current Control — this carrier version allows a microcontroller to dynamically adjust the current limit up to around 2 A
Internal current sensing allows the driver to automatically adjust the decay mode as necessary to provide the smoothest current waveform
4.5 V to 35 V supply voltage range
Can deliver 1.8 A per phase continuously without additional cooling
Built-in regulator (no external logic voltage supply needed)
Can interface directly with 3.3 V and 5 V systems
Over-temperature thermal shutdown, over-current shutdown, short circuit protection, and under-voltage lockout
4-layer, 2 oz copper PCB for improved heat dissipation
Exposed solderable ground pad below the driver IC on the bottom of the PCB
Module size, pinout, and interface match those of Pololu's A4988 stepper motor driver carriers in most respects
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