{"product_id":"tmc2209-v985-stepper-motor-driver-module-with-heatsink","title":"TMC2209 V985 Stepper Motor Driver Module with Heatsink","description":"\u003cp\u003eControl a two-phase bipolar stepper motor with this black V985 TMC2209 module, supplied with soldered headers and a separate blue aluminium heatsink.\u003c\/p\u003e\r\n\u003cp\u003eUse STEP\/DIR signals for motion control, with optional UART configuration when supported by your controller and firmware.\u003c\/p\u003e\r\n\u003ch2\u003eModule specifications\u003c\/h2\u003e\r\n\u003cp\u003eThese are supplier-stated figures for the V985 module, not Techexpress NZ measurements or load-test results.\u003c\/p\u003e\r\n\u003ctable\u003e\r\n\u003ctbody\u003e\r\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eBoard\u003c\/th\u003e\r\n\u003ctd\u003eBlack V985 TMC2209 module\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eMotor supply (VM)\u003c\/th\u003e\r\n\u003ctd\u003e5.5–28 V DC; not suitable for 36 V or 48 V supplies\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eLogic supply (VIO)\u003c\/th\u003e\r\n\u003ctd\u003e3.3 V or 5 V\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eControl\u003c\/th\u003e\r\n\u003ctd\u003eSTEP\/DIR; optional UART configuration\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eHeaders\u003c\/th\u003e\r\n\u003ctd\u003eTwo soldered rows of eight pins, 2.54 mm pitch\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePCB size\u003c\/th\u003e\r\n\u003ctd\u003e20.5 × 15.0 mm; allow additional clearance for headers and heatsink\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eCurrent setting\u003c\/th\u003e\r\n\u003ctd\u003eOnboard trimmer or UART, depending on module and controller configuration\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003c\/tbody\u003e\r\n\u003c\/table\u003e\r\n\u003ch2\u003eDriver IC features\u003c\/h2\u003e\r\n\u003cp\u003eThe TMC2209 IC supports StealthChop2, SpreadCycle and MicroPlyer microstep interpolation. Available modes and UART access depend on the module wiring, controller and firmware. IC maximum ratings are not guaranteed operating ratings for the complete module.\u003c\/p\u003e\r\n\u003ch2\u003eIncluded\u003c\/h2\u003e\r\n\u003cul\u003e\r\n\u003cli\u003e1 × V985 TMC2209 driver module with both header rows soldered.\u003c\/li\u003e\r\n\u003cli\u003e1 × separate blue aluminium heatsink with thermal adhesive.\u003c\/li\u003e\r\n\u003c\/ul\u003e\r\n\u003ch2\u003eConnection functions\u003c\/h2\u003e\r\n\u003cp\u003eThis is a function reference, not a physical pin-position diagram. Match the labels on your exact module and carrier.\u003c\/p\u003e\r\n\u003ctable\u003e\r\n\u003ctbody\u003e\r\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eVM \/ GND\u003c\/th\u003e\r\n\u003ctd\u003eMotor supply and return\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eVIO \/ GND\u003c\/th\u003e\r\n\u003ctd\u003eLogic supply and common logic reference\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eSTEP \/ DIR\u003c\/th\u003e\r\n\u003ctd\u003eStep-command and direction inputs\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eEN\u003c\/th\u003e\r\n\u003ctd\u003eEnable input; check the carrier documentation for its active state\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eM1A \/ M1B\u003c\/th\u003e\r\n\u003ctd\u003eFirst motor winding pair\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003eM2A \/ M2B\u003c\/th\u003e\r\n\u003ctd\u003eSecond motor winding pair\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003ctr\u003e\n\u003cth scope=\"row\"\u003ePDN \/ UART\u003c\/th\u003e\r\n\u003ctd\u003ePower-down\/serial configuration; routing depends on the carrier\u003c\/td\u003e\r\n\u003c\/tr\u003e\r\n\u003c\/tbody\u003e\r\n\u003c\/table\u003e\r\n\u003ch2\u003eCompatibility and safe setup\u003c\/h2\u003e\r\n\u003cp\u003e\u003cstrong\u003eCheck every pin label and supply rail against your controller documentation before fitting the module.\u003c\/strong\u003e The common two-row socket format alone does not establish compatibility. Do not assume a drop-in replacement for an A4988, DRV8825 or another TMC2209 board. Physical header positions, UART routing and tested controller compatibility have not been independently verified by Techexpress NZ.\u003c\/p\u003e\r\n\u003col\u003e\r\n\u003cli\u003eDisconnect motor power, logic power and USB before fitting the module or changing wiring.\u003c\/li\u003e\r\n\u003cli\u003eConfirm orientation, motor supply, logic supply and ground connections against the exact module and carrier documentation. Do not infer orientation from board colour or trimmer position.\u003c\/li\u003e\r\n\u003cli\u003eFit the heatsink’s adhesive base to the large gold thermal area on the reverse, keeping it clear of pins, the trimmer and other electrical contacts.\u003c\/li\u003e\r\n\u003cli\u003eIdentify the motor’s two winding pairs with a meter. With power off, connect one winding to M1A\/M1B and the other to M2A\/M2B, following the exact module labels.\u003c\/li\u003e\r\n\u003cli\u003eSet current conservatively using the instructions for your exact module and controller. Do not reuse an A4988 or DRV8825 Vref setting. No universal Vref multiplier or guaranteed continuous module current is specified here.\u003c\/li\u003e\r\n\u003cli\u003eConfigure STEP\/DIR or UART in the controller, then test a short, slow move. Stop if motion is erratic or temperature rises rapidly. Switch every supply off before making changes.\u003c\/li\u003e\r\n\u003c\/ol\u003e\r\n\u003cp\u003e\u003cstrong\u003eNever connect or disconnect the motor while powered.\u003c\/strong\u003e Keep current within both motor and module limits. Cooling, airflow, ambient temperature and configuration affect the usable current.\u003c\/p\u003e\r\n\u003ch2\u003eTroubleshooting\u003c\/h2\u003e\r\n\u003cul\u003e\r\n\u003cli\u003e\n\u003cstrong\u003eNo motion:\u003c\/strong\u003e check supply rails, reference ground, enable state and STEP commands against the controller documentation.\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cstrong\u003eBuzzing or missed steps:\u003c\/strong\u003e power off and check winding pairs, current setting, microstep configuration and mechanical load before increasing current.\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cstrong\u003eOverheating:\u003c\/strong\u003e stop, review the current setting and heatsink contact, and improve cooling before retesting.\u003c\/li\u003e\r\n\u003cli\u003e\n\u003cstrong\u003eUART not responding:\u003c\/strong\u003e check the carrier’s UART routing and firmware settings; UART support is not established by the socket shape alone.\u003c\/li\u003e\r\n\u003c\/ul\u003e","brand":"Techexpress NZ","offers":[{"title":"Default","offer_id":50753709310050,"sku":"TMC2209-V985-NZ","price":24.99,"currency_code":"NZD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1907\/5887\/files\/01-tmc2209-v985-module-and-heatsink_TUGE0U2I9LJC.png?v=1792781896","url":"https:\/\/www.techexpress.co.nz\/products\/tmc2209-v985-stepper-motor-driver-module-with-heatsink","provider":"Techexpress NZ","version":"1.0","type":"link"}