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.
Features
Specifications
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, 1/2, 1/4, 1/8, 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]
!!! warning
Please do not exceed the current rating of the motor current, or motor and motor driver will be over-heated, or even damage.
!!!
Micro-stepping
Microstep | MS1 | MS2 | MS3 |
|---|---|---|---|
Full Step | Low | Low | Low |
1/2 Step | High | Low | Low |
1/4 Step | Low | High | Low |
1/8 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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Updated on: 01/07/2026
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