Each EasyDriver can drive up to about 750mA per phase of a bi-polar stepper motor. It defaults to 8 step microstepping mode.(So if your motor is 200 full steps per revolution, you would get 1600 steps/rev using EasyDriver.) It is a chopper microstepping driver based on the Allegro A3967 driver chip. For the complete specs of the design, read the A3967 datasheet. It has a variable max current from about 150mA/phase to 750mA/phase. It can take a maximum motor drive voltage of around 30V, and includes on-board 5V regulation, so only one supply is necessary. The best part - low cost. The parts cost is maybe $10, less if you make the board yourself.
-- above text and all designs are from Brian Schmalz's Project page.
Confused why you say the microstepping mode is permanently set to 8-step. The standard V4.4 board defaults to 8-step mode but this can be changed using pins MS1 or MS2. It appears the board allows access to MS1 & MS2 pins, so why do you say it is perma
What driver is the best to use with the 4WD Arduino robot platform??
I have tried the exact setup described on http://www.schmalzhaus.com/Eas..., using the code from example 2 - but the motor only turns in one direction.
Since this easydriver is v4.4 and the picture shows pins ms1 and ms2 available, allowing the selection of microstepping resolution: Has your description of the item been updated from v3?
Would it not be nice to have a compatible stepper in this catalog?
The only stepper available as of now is a 5-pin stepper which is not compatible to this driver.
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