{"product_id":"infrared-sensor-module-line-tracking-obstacle-avoidance-arduino","title":"Infrared Sensor Module – Line Tracking \u0026 Obstacle Avoidance Arduino","description":"\n\u003ch2\u003eHello STEM Infrared Sensor Module (HS-S01A) – Line Tracking \u0026amp; Obstacle Avoidance for Arduino\u003c\/h2\u003e\n\u003cp\u003eTake your Arduino projects to the next level with the \u003cstrong\u003eHello STEM HS-S01A Infrared Sensor Module\u003c\/strong\u003e. Designed for makers, students, and electronics enthusiasts, this compact digital photoelectric sensor delivers reliable line-tracing and obstacle-detection performance in a plug-and-play form factor. Whether you're building a line-following robot, a proximity-sensing device, or experimenting with automation, this module integrates seamlessly with Arduino development boards and most compatible microcontroller kits.\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\/trace tracking and obstacle avoidance in a single compact module.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDigital Output:\u003c\/strong\u003e Clean HIGH\/LOW digital signal output for easy interfacing with Arduino and compatible boards — no analog conversion needed.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePhotoelectric (Infrared) Sensing:\u003c\/strong\u003e Uses IR emitter and receiver technology for accurate, consistent detection across varying lighting conditions.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCompact Form Factor:\u003c\/strong\u003e At just 36 × 18 × 14 mm, it fits neatly into tight builds, robots, and enclosures without adding bulk.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePolymer Construction:\u003c\/strong\u003e Lightweight and durable polymer body built to withstand repeated prototyping and classroom use.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWide Compatibility:\u003c\/strong\u003e Works with Arduino UNO, Mega, Nano, and most standard 5V microcontroller development platforms.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdjustable Sensitivity:\u003c\/strong\u003e Onboard potentiometer allows you to fine-tune detection range and sensitivity for your specific application.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e HS-S01A | \u003cstrong\u003eOutput Type:\u003c\/strong\u003e Digital Sensor | \u003cstrong\u003eWorking Principle:\u003c\/strong\u003e Photoelectric (Infrared)\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eHS-S01A\u003c\/td\u003e\n\u003c\/tr\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\u003eSensor Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eInfrared (Photoelectric)\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\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMaterial\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003ePolymer\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e36 × 18 × 14 mm\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 × Hello STEM HS-S01A Infrared Sensor Module\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWho Is This For?\u003c\/h3\u003e\n\u003cp\u003ePerfect for \u003cstrong\u003eSTEM students, hobbyists, robotics builders, and educators\u003c\/strong\u003e looking for an affordable, reliable infrared sensor to power Arduino-based automation and robotics projects. Whether it's your first robot build or your fiftieth, the HS-S01A makes smart sensing simple.\u003c\/p\u003e\n\n\u003cp\u003eLearn more: \u003ca href=\"https:\/\/www.osha.gov\/eye-face-protection\" target=\"_blank\" rel=\"noopener\"\u003eOSHA on eye and face protection\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003ch4\u003eQ: Is this infrared sensor module compatible with Arduino UNO and Nano boards?\u003c\/h4\u003e\n\u003cp\u003eA: Yes! The Hello STEM HS-S01A infrared sensor module is fully compatible with Arduino UNO, Nano, Mega, and most other 5V microcontroller development boards. Simply connect the VCC, GND, and signal pins, and you're ready to code.\u003c\/p\u003e\n\n\u003ch4\u003eQ: Can this module handle both line tracking and obstacle avoidance?\u003c\/h4\u003e\n\u003cp\u003eA: Absolutely. The HS-S01A infrared sensor module is designed for dual use — it can detect surface lines (trace tracking) for line-following robots and detect nearby objects (obstacle avoidance) for autonomous navigation projects. The onboard sensitivity potentiometer lets you tune it for either use case.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What is the detection range of the HS-S01A infrared sensor?\u003c\/h4\u003e\n\u003cp\u003eA: The detection range can be adjusted via the onboard potentiometer, typically spanning a few centimeters. For line tracking, it works best close to a reflective surface; for obstacle avoidance, the range can be tuned to suit your specific build requirements.\u003c\/p\u003e\n\n\u003ch4\u003eQ: What output type does this sensor use?\u003c\/h4\u003e\n\u003cp\u003eA: The HS-S01A uses a digital output, producing a clean HIGH or LOW signal. This makes it straightforward to read with any digital input pin on your Arduino or compatible development board — no analog-to-digital conversion required.\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\": \"Is this infrared sensor module compatible with Arduino UNO and Nano boards?\", \"acceptedAnswer\": {\"@type\": \"Answer\", \"text\": \"Yes! 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