{"product_id":"infrared-tracking-obstacle-avoidance-sensor-module-smart-car","title":"Infrared Tracking \u0026 Obstacle Avoidance Sensor Module – Smart Car","description":"\n\u003ch2\u003eHello STEM Infrared Tracking \u0026amp; Obstacle Avoidance Module (HS-S04B)\u003c\/h2\u003e\n\u003cp\u003eTake your robotics and smart car projects to the next level with this versatile \u003cstrong\u003eInfrared Tracking \u0026amp; Obstacle Avoidance Sensor Module\u003c\/strong\u003e from \u003cstrong\u003eHello STEM\u003c\/strong\u003e. Designed for makers, students, and hobbyists, this compact infrared reflection sensor delivers reliable line-following and proximity detection performance in a plug-and-play format — perfect for DIY smart cars, robotic platforms, and STEM education projects.\u003c\/p\u003e\n\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDual Functionality:\u003c\/strong\u003e Supports both line\/track following and obstacle detection, making it ideal for a wide range of autonomous robot builds.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eInfrared Reflection Technology:\u003c\/strong\u003e Uses IR emitter and receiver pairs to accurately detect surface contrasts (black\/white lines) and nearby obstacles without physical contact.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e5V Operating Voltage:\u003c\/strong\u003e Compatible with Arduino, Raspberry Pi, and most popular microcontroller development boards.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel HS-S04B:\u003c\/strong\u003e Compact and lightweight design for easy integration into smart car chassis and robotic assemblies.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDigital Output:\u003c\/strong\u003e Clean HIGH\/LOW signal output for straightforward interfacing with any digital I\/O pin.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdjustable Sensitivity:\u003c\/strong\u003e On-board potentiometer lets you fine-tune detection range to suit your project environment.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStable \u0026amp; Reliable:\u003c\/strong\u003e High-quality components ensure consistent readings across a variety of surfaces and lighting conditions.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHello STEM\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHS-S04B\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWorking Voltage\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e5V DC\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOutput Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDigital (HIGH\/LOW)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSmart car, line follower, obstacle avoidance robot\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 China\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 × Infrared Tracking \u0026amp; Obstacle Avoidance Sensor Module (HS-S04B)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho Is This For?\u003c\/h3\u003e\n\u003cp\u003eWhether you're a student building your first autonomous robot, a teacher running a STEM workshop, or an experienced maker prototyping a new smart vehicle, this infrared sensor module gives you the detection capability you need at an accessible price point.\u003c\/p\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: What microcontrollers is this infrared tracking module compatible with?\u003c\/h4\u003e\n\u003cp\u003eA: The HS-S04B infrared tracking and obstacle avoidance module operates at 5V and outputs a standard digital signal, making it compatible with Arduino (Uno, Mega, Nano), Raspberry Pi (via a logic level adapter), ESP32, ESP8266, and most other 5V microcontroller development boards commonly used in smart car and robotics projects.\u003c\/p\u003e\n\u003ch4\u003eQ: How do I adjust the detection sensitivity of this infrared sensor module?\u003c\/h4\u003e\n\u003cp\u003eA: The module features a built-in potentiometer (adjustable trimmer). Using a small flathead screwdriver, you can turn the potentiometer clockwise or counterclockwise to increase or decrease the detection range and sensitivity, allowing you to optimize performance for different surfaces and ambient light conditions.\u003c\/p\u003e\n\u003ch4\u003eQ: Can this module be used for both line tracking and obstacle avoidance on the same smart car?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The HS-S04B is designed to support both line\/track following (detecting black lines on white surfaces or vice versa) and obstacle detection using infrared reflection. You can use multiple modules on a single smart car chassis — one set for line tracking and another angled forward for obstacle avoidance — making it a highly flexible choice for robotics builds.\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\": \"What microcontrollers is this infrared tracking module compatible with?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The HS-S04B infrared tracking and obstacle avoidance module operates at 5V and outputs a standard digital signal, making it compatible with Arduino (Uno, Mega, Nano), Raspberry Pi (via a logic level adapter), ESP32, ESP8266, and most other 5V microcontroller development boards commonly used in smart car and robotics projects.\"}}, {\"@type\": \"Question\", \"name\": \"How do I adjust the detection sensitivity of this infrared sensor module?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"The module features a built-in potentiometer (adjustable trimmer). 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