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LV8729 V1.0

Product Introduction


LV8729 driver module with 128 subdivisions is a good choice for Nema stepper motor whose current is less than 1.5A, which makes motor steady, quiet and precise.



Model LV8729
Dimensions 1.5mm * 2.0mm (Same with the A4988 and DRV8825)
Maximum Drive Current 1.5A (Default 0.8A)
Operating Voltage 6V-36V, the proposed voltage is 12V
Support Subdivisions 1, ½, ¼, ⅛, 1/16, 1/32, 1/64, 1/128
Product Process four layer PCB board

Pin Functions


Interface Resources

Wiring Diagram


Motor Current Setting


Current limits can be adjusted by measuring the VREF and the adjustable resistance (pls check wiring diagram). Connect the voltmeter + to VREF, [-] to the GND and read the value. LV8729 uses 0.10ohm current sense resistor, so the current limits can be calculated as follows: [Current Limit = VREF x 2]


Please do not exceed the current rating of the motor current, or motor and motor driver will be over-heated, or even damage.


Microstep MS1 MS2 MS3
Full Step Low Low Low
½ Step High Low Low
¼ Step Low High Low
⅛ Step High High Low
1/16 Step Low Low High
1/32 Step High Low High
1/64 Step Low High High
1/128 Step High High High



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