{"product_id":"s42c-closed-loop-stepper-motor-assembly-uart-3d-printer","title":"S42C Closed-Loop Stepper Motor Assembly | UART | 3D Printer","description":"\n\u003ch2\u003eS42C Closed-Loop Stepper Motor Assembly for 3D Printer Builders\u003c\/h2\u003e\n\u003cp\u003eUpgrade your 3D printer's motion control system with this fully assembled \u003cstrong\u003eS42C Closed-Loop Stepper Motor\u003c\/strong\u003e. Featuring an integrated driver board, pre-wired harness, and UART configuration access, this unit is engineered for builders and enthusiasts who demand precise, stable, and quiet motion travel — right out of the box.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eClosed-Loop Motion Control:\u003c\/strong\u003e Integrated motor and driver board combine closed-loop step compensation with a compact rear module, ensuring stable and accurate movement even during fast print cycles.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePre-Assembled Wiring:\u003c\/strong\u003e Arrives fully wired with a connected harness and ready-to-route cable layout — simplifying installation for upgrades, repairs, and worktable reconfigurations.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUART Access \u0026amp; Parameter Retention:\u003c\/strong\u003e Direct UART control interface with saved parameter support lets you reload configuration values without repeating the full tuning workflow — ideal for repeat setup tasks.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eLow-Vibration Operation:\u003c\/strong\u003e Onboard control software is designed to reduce operating sound and vibration, supporting smoother printer movement — especially beneficial for enclosed builds and daily use environments.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePowerful 32-Bit Control Chip:\u003c\/strong\u003e Built around the STM32G031G8U6 running at 64 MHz, delivering responsive and precise closed-loop feedback for demanding motion control applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eControl Board\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eS42C Closed-Loop Driver Board\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTop Speed\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2000 RPM\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMain Control Chip\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSTM32G031G8U6, 32-bit, 64 MHz\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eControl Method\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eUART \/ Touch Interface\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eItem Shape\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eRectangular\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eAssembly Required\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNo\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eQuantity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 Set\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eMade in Mainland China\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × S42C Closed-Loop Stepper Motor Assembly (with driver board and pre-installed cable set)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003e\u003cstrong\u003eImportant Note:\u003c\/strong\u003e Initial board connection requires calibration before normal parameter setup. Please complete the calibration step before configuring your standard operating parameters. Please allow 1–2 cm tolerance due to manual measurement. Colors may vary slightly from product images due to monitor differences.\u003c\/p\u003e\n\n\u003ch3\u003eYou May Also Like\u003c\/h3\u003e\n\u003cp\u003eLooking for more precision build components? Explore related products in our store:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/ancient-nutrition-multi-collagen-advanced-muscle-60-capsules\"\u003eAncient Nutrition Multi Collagen Advanced Muscle 60 Capsules\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"\/products\/bu-29mm-sinking-minnow-jerkbait-fishing-lure-bass-trout-pike\"\u003eB\u0026amp;U 29mm Sinking Minnow Jerkbait Lure – Bass Trout Pike\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/hand-power-tools\" target=\"_blank\" rel=\"noopener\"\u003eOSHA guidance on hand and power tools\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Does the S42C closed-loop stepper motor arrive fully assembled and ready to install?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The S42C motor assembly comes fully pre-assembled with the driver board integrated and the cable harness pre-installed. No additional assembly is required — simply connect it to your 3D printer's control board and complete the initial calibration step before configuring your parameters.\u003c\/p\u003e\n\u003ch4\u003eQ: What control interface does the S42C stepper motor support?\u003c\/h4\u003e\n\u003cp\u003eA: The S42C supports UART communication for direct parameter configuration and retention. This allows tuning users to save and reload settings without repeating the full configuration workflow, making it highly practical for iterative builds and upgrades.\u003c\/p\u003e\n\u003ch4\u003eQ: Is this motor compatible with enclosed 3D printer builds?\u003c\/h4\u003e\n\u003cp\u003eA: Yes. The S42C's onboard control software is designed to reduce operating vibration and sound, making it particularly well-suited for enclosed printer builds and environments where quiet, stable motion is important for daily printing operations.\u003c\/p\u003e\n\u003c!-- production-packaging-notice --\u003e\n\u003ch3\u003eProduction \u0026amp; Packaging Notice\u003c\/h3\u003e\n\u003cp\u003eTo maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.\u003c\/p\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"FAQPage\", \"mainEntity\": [{\"@type\": \"Question\", \"name\": \"Does the S42C closed-loop stepper motor arrive fully assembled and ready to install?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes. The S42C motor assembly comes fully pre-assembled with the driver board integrated and the cable harness pre-installed. 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The S42C's onboard control software is designed to reduce operating vibration and sound, making it particularly well-suited for enclosed printer builds and environments where quiet, stable motion is important for daily printing operations.\"}}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\": \"https:\/\/schema.org\", \"@type\": \"BreadcrumbList\", \"itemListElement\": [{\"@type\": \"ListItem\", \"position\": 1, \"name\": \"Home\", \"item\": \"https:\/\/fzefzx-nb.myshopify.com\/\"}, {\"@type\": \"ListItem\", \"position\": 2, \"name\": \"Home page\", \"item\": \"https:\/\/fzefzx-nb.myshopify.com\/collections\/frontpage\"}, {\"@type\": \"ListItem\", \"position\": 3, \"name\": \"S42C Closed-Loop Stepper Motor Assembly | UART | 3D Printer\", \"item\": \"https:\/\/fzefzx-nb.myshopify.com\/products\/s42c-closed-loop-stepper-motor-assembly-uart-3d-printer\"}]}\u003c\/script\u003e","brand":"P3","offers":[{"title":"CN \/ No plug","offer_id":67623627391345,"sku":"1005012879398526-CN-No plug","price":255.7,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1046\/3431\/9217\/files\/Sfad547ee58d141e6ad077caa6dd46083O.webp?v=1790943693","url":"https:\/\/p3shopmart.com\/products\/s42c-closed-loop-stepper-motor-assembly-uart-3d-printer","provider":"P3","version":"1.0","type":"link"}