A3967SLBT / stepper motor drive module board

A3967SLBT / stepper motor drive module board

Price: $1.24Sku: FA2015
Product Introduction

A3967SLBT / stepper motor drive module board

1.GND : There are three GND (Ground) pins on the Easy Driver. They are all connected together inside the board. Connect the
negative side of your power supply, as well as from any other boards you are using to drive the Easy Driver to one or more of the
GND pins.
2. M+ : This is the power input to the Easy Driver. Connect this to the positive power supply lead. This should be a 6V to 30V, 2A
(or more) power supply that is clean (low ripple).

3. A and B : (four pins) These are the motor connections. See below diagrams for how to hook these up. A and B are the two coils
of the motor, and can swap the two wires for a given coil (it will just reverse the direction of the motor). Make CERTAIN that
this connection to the motor is solid, and NOT through a connector that has any chance of intermittent contact (which will fry the
motor driver chip).
4. STEP : This needs to be a 0V to 5V (or 0V to 3.3V if you’ve set your Easy Driver that way) digital signal. Each rising edge of
this signal will cause one step (or microstep) to be taken.

5. DIR (Direction) : This needs to be a 0V to 5V (or 0V to 3.3V if you’ve set your Easy Driver up that way) digital signal. The
level if this signal (high/low) is sampled on each rising edge of STEP to determine which direction to take the step (or
microstep).
6. That’s it – those are the only signals that you absolutely need to connect to anything. All the rest below are optional – in
other words, the Easy Driver sets them to reasonable default values.

7. MS1/MS2 : These digital inputs control the microstepping mode. Possible settings are (MS1/MS2) : full step (0,0), half step
(1,0), 1/4 step (0,1), and 1/8 step (1,1 : default).
8. RST (reset) : This normally high input signal will reset the internal translator and disable all output drivers when pulled
low.

9. SLP (sleep) : This normally high input signal will minimize power consumption by disabling internal circuitry and the output
drivers when pulled low.
10. ENABLE : This normally low input signal will disable all outputs when pulled high.

11. PFD : This one is complicated – please see the datasheet for more information. We default it to slow decay mode, but you can
over-ride with your own voltage on this pin. (or by populating R17)
12. 5V : This is an OUTPUT pin that will provide either 5V (default) or 3.3V from the voltage regulator, at a small amount of
current (say 50mA – depends on input voltage) to power a circuit that you may need powered. If you cut jumper APWR (SJ1) then you
can use the 5V pin as a VCC input to the Easy Driver, powering it with your own VCC supply.

Leave a Reply

Your email address will not be published.