{"product_id":"ydmt42a-485-bus-2-phase-4-wire-42-35-28-20-stepper-motor-driver-control-module-with-28-stepper-motor","title":"YDMT42A 485 Bus 2-Phase 4-Wire 42\/35\/28\/20 Stepper Motor Driver Control Module with 28 Stepper Motor","description":"\u003cp\u003e\u003cb\u003e28 Motor Parameter:\u003c\/b\u003e\u003cbr\u003e- Size: 28 x 28 x 33mm\u003cbr\u003e- Current: 1A\u003cbr\u003e- Torque: 0.1N.m\u003cbr\u003e- Net weight: 105g\u003cbr\u003e\u003cbr\u003e\u003cb\u003eDescription:\u003c\/b\u003e\u003cbr\u003e- YDMT421A is a highly integrated two-phase stepper motor drive control module. Its core integrates efficient driving units and intelligent control units. Users do not need complex pulse direction signals or independent controller programming. They only need to send instructions through the universal RS485 bus according to the standard Modbus communication protocol to accurately control the motor to perform various complex motion tasks. It greatly simplifies system design, reduces wiring complexity, and lowers the development threshold.\u003cbr\u003e\u003cb\u003e\u003cbr\u003eAdvantage:\u003c\/b\u003e\u003cbr\u003e- Minimalist integration, intelligent driving: YDMT42A combines high-performance stepper motor drivers with intelligent controllers, enabling comprehensive motion control through standard RS485 interfaces and Modbus protocols. It is an ideal choice for space limited, wiring simplified, and intelligent upgrade applications.\u003cbr\u003e- Ultra mini size: 59 x 38 x 12mm\u003cbr\u003e- Power supply: 9V - 32V\u003cbr\u003e- Current of 0 - 2.5A, subdivision up to 1\/32.\u003cbr\u003e- Suitable for 42\/35\/28\/20 two-phase four-wire stepper motors.\u003cbr\u003e\u003cb\u003e\u003cbr\u003eFeatures:\u003c\/b\u003e\u003cbr\u003e\u003cu\u003eHighly integrated:\u003c\/u\u003e\u003cbr\u003e- Driver unit + control unit integrated design, saving space and simplifying system architecture.\u003cbr\u003e\u003cbr\u003e\u003cu\u003eUniversal interface:\u003c\/u\u003e\u003cbr\u003e- Standard RS485 communication interface, supports Modbus RTU protocol, and has strong compatibility.\u003cbr\u003e\u003cbr\u003e\u003cu\u003eWide compatibility:\u003c\/u\u003e\u003cbr\u003e- Host computer: Compatible with any device that has RS485 interface and supports Modbus host protocol, such as PLC, HMI (serial screen), PC (with RS485 converter), industrial computer, microcontroller, etc.\u003cbr\u003e- Motor: Suitable for two-phase four-wire stepper motors of 42 series, 35 series, 28 series, 20 series and smaller sizes.\u003cbr\u003e\u003cbr\u003e\u003cu\u003eRich motion functions:\u003c\/u\u003e\u003cbr\u003e- Jog: Manually control the forward and reverse rotation of the motor.\u003cbr\u003e- Repeat: Run in a loop according to the set parameters.\u003cbr\u003e- Home: Accurately locate the mechanical zero point (with the assistance of the origin limit signal).\u003cbr\u003e- Velocity mode: Continuous uniform rotation.\u003cbr\u003e- Multi point motion: Programmable execution of multiple motion trajectories including position, velocity, and acceleration.\u003cbr\u003e\u003cbr\u003e\u003cu\u003ePrecision drive performance:\u003c\/u\u003e\u003cbr\u003e- Wide voltage input: 9-32V DC power supply, suitable for various power supply environments.\u003cbr\u003e- Adjustable current: 0-2.5A peak current output, infinitely adjustable, perfectly matching different motor requirements, optimizing heating and torque.\u003cbr\u003e- High subdivision: Supports up to 1\/32 micro step subdivision, providing extremely smooth, low-noise, high-resolution motion effects.\u003cbr\u003e- Limit input: Provides positive limit (P-Limit), negative limit (N-Limit), and home limit (Home) signal input interfaces to ensure safe operation and achieve precise positioning.\u003cbr\u003e- Driver protection: The DRV8825 chip has built-in overcurrent, overheating, undervoltage protection, etc.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eIndicators:\u003c\/b\u003e\u003cbr\u003e- Operation indicator: flash for normal operation; light on or light off for operation failure.\u003cbr\u003e- Alarm indicator: light on for driver over-current\/over-temperature protection; light off for normal operation.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eMicrostep\/subdivision calculation:\u003c\/b\u003e\u003cbr\u003e- To calculate how many pulses Pc the controller needs to send for a stepper motor to complete one revolution, we need to know the step angle θ of the stepper motor (step angle refers to the angle the rotor rotates for each pulse signal received by the stepper motor). Common step angles include 1.8°, 0.9°, 3.6°, and 0.72°. Based on the step angle, we can calculate Pc=360\/θ. If the step angle is 1.8°, then the number of pulses required for the motor to rotate once is Pc=360\/1.8=200 (without using micro steps or with micro steps being 1).\u003cbr\u003e- Microstep Sm is the number of pulses used to control each step angle when controlling a stepper motor. For example, if the step angle is 1.8° and the microstep is set to 4, it means that 4 pulses are used to control the stepper motor to rotate 1.8°. When using microstep for control, the motor needs to send a pulse count Pc=(360\/θ) * Sm per revolution. If the step angle of the motor is 1.8° and the micro step is set to 4, the number of pulses required for the motor to rotate once is Pc=(360\/1.8) * 4=800\u003cbr\u003e\u003cbr\u003e\u003cb\u003eTypical Application:\u003c\/b\u003e\u003cbr\u003e- Small precision motion control units in automation equipment (such as sorting, dispensing, positioning platforms, 3D printing).\u003cbr\u003e- The motion actuator of instruments and laboratory equipment.\u003cbr\u003e- Teaching experiment kit, maker project.\u003cbr\u003e- Small robot joint drive.\u003cbr\u003e- Stepper motor applications that require simplified wiring or remote control.\u003cbr\u003e- An upgraded solution to replace traditional \"pulse + direction\" drivers and achieve more intelligent control.\u003cbr\u003e\u003cbr\u003e\u003cb\u003ePackage Included:\u003c\/b\u003e\u003cbr\u003e- 1 x Stepper Motor Driver Module\u003cbr\u003e- 1 x 28 Stepper Motor\u003c\/p\u003e\n\u003cp\u003e\u003cimg style=\"width: 1000px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/100924\/100924-01.jpg\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cimg style=\"width: 1000px;\" src=\"https:\/\/www.comseek.com\/image\/catalog\/100924\/100924-02.jpg\"\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Thanksbuyer","offers":[{"title":"Default Title","offer_id":41028914708529,"sku":"100925","price":35.06,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0578\/4790\/6353\/files\/1772501391-1.jpg?v=1780358838","url":"https:\/\/www.thanksbuyer.com\/ja\/products\/ydmt42a-485-bus-2-phase-4-wire-42-35-28-20-stepper-motor-driver-control-module-with-28-stepper-motor","provider":"Thanksbuyer Online,SDR Radio, Testers and Measurement devices, Astronomy products,  Audio Amplifer and Decoders","version":"1.0","type":"link"}