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# LV8729_V1.0

## Product Introduction

![LV8729](https://raw.githubusercontent.com/FYSETC/wiki.fysetc/main/docs/images/crisp/LV8729.png "=800xauto")

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

![LV8729-pin](https://raw.githubusercontent.com/FYSETC/wiki.fysetc/main/docs/images/crisp/LV8729-pin.jpg "=800xauto")

## Interface Resources

### Wiring Diagram

![LV8729-wiring-diagram](https://raw.githubusercontent.com/FYSETC/wiki.fysetc/main/docs/images/crisp/LV8729-wiring-diagram.jpg "=800xauto")

### Motor Current Setting

![LV8729-current-setting](https://raw.githubusercontent.com/FYSETC/wiki.fysetc/main/docs/images/crisp/LV8729-current-setting.jpg "=800xauto")

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.

### 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

## Attention


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