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Description
Breakout board for Allegro's A4988 microstepping bipolar stepper motor driver
Simple step and direction control interface
Operates from 8-35 V and delivers up to 2A per coil
Adjustable current limiting and five different microstep resolutions
The Pololu 8-35V 2A Single Bipolar Stepper Motor Driver A4988 is a breakout board for Allegro's easy-to-use A4988 microstepping bipolar stepper motor driver and is a drop-in replacement for the A4983 stepper motor driver carrier. The driver features adjustable current limiting, overcurrent protection, and five different microstep resolutions.
This breakout board for Allegro’s A4988 microstepping bipolar stepper motor driver features adjustable current limiting, over-current and over-temperature protection, and five different microstep resolutions (down to 1/16-step). It operates from 8 V to 35 V and can deliver up to approximately 1 A per phase without a heat sink or forced air flow (it is rated for 2 A per coil with sufficient additional cooling). This board ships with 0.1″ male header pins included but not soldered in.
Features: • Simple step and direction control interface • Intelligent chopping control that automatically selects the correct current decay mode (fast decay or slow decay) • Five different step resolutions: full-step, half-step, quarter-step, eighth-step, and sixteenth-step • Over-temperature thermal shutdown, under-voltage lockout, and crossover-current protection • Short to ground and shorted-load protection
Needed to add heat sinks at the bottom of the pcb where the thermal vias are and a copper heat sink on the top of the chip; the way I've used it temps got >>80 degrees C; now it works fine. Sometimes my steppers are showing strange things (stepping back instead of forward); probably a temp thing because it only happens after driving them for a while. For "lights" stuff this is more than ok!
A
Alvin
Easy to use
Pretty much plug and play by following the pin layouts on the datasheet. Only requires step and direction inputs to run. Works with bipolar and unipolar stepper motors. More info can be found on the pololu page.
J
Jocelyn
Petit mais très bon
Très bon produit fonctionne très bien avec linux cnc et tous les moteurs bipolaire et hybride
k
ken
Stepper driver
Nice little unit performs to specs
R
Rayne
Works great and small size
Perfect size to snap a couple of these into a bread board for testing stepper motors
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