Stepper Motor Driver Control Module Components HP240 750ma DC 725V Product Introduction: Feature: 1A small stepper motor drive module, drives a two-phase four-wire stepper motor 2 Communicate with the host computer via TTL232 mode, easy and convenient to use. 3 Automatic acceleration and deceleration programs in the module to ensure that the stepper motor does not lose steps during the driving process. 4 Can control the stepper motor, drive the program-controlled cart, have stable and excellent performance. 5 Small in size and light in weight, convenient to carry and use at any time, very convenient and practical. Specifications: Item Type: Stepper Motor Driver Board Material: PCB Model: HP240 Length Range: 800,000pcs (number of stepper motor punches) Acceleration Steps: 1-9 levels (the stepper motor has 9 steps to choose from) Driving voltage: 7-25 Vdc Driving current: 700mA Operating temperature: -40-65 Storage temperature: -40-65 Size of the Product: Approx. 45 x 35 x 15mm / 1.8 x 1.4 x 0.6in Package List: 1 x Stepper Motor Driver Board Note: 1 Serial Port Communication Format: Baud Rate 9600 , no parity bit, 8-bit data, 1-bit shutdown 2 Notes: The data is binary complement When using it, pay attention to the correct polarity of the power supply before turning it on VR1 is to adjust the current d motor drive and increase it clockwise. Presentation of the product in pictures: