{"product_id":"f3-3mm-940nm-leds-infrared-emitter-and-ir-receiver-diodes-each-5pcs-infrared-to-tube-for-arduino","title":"F3 3MM 940nm LEDs infrared emitter and IR receiver diodes each 5pcs Infrared to tube For arduino","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the F3 3MM 940nm infrared emitter and IR receiver diodes—a concise, ready-to-build pair kit designed for Arduino projects and hands-on learning. This set includes 5 infrared emitters and 5 IR receivers, giving you a complete sensing toolkit right out of the box.\u003c\/p\u003e \u003ch3\u003eWhat’s included\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e5 x IR emitters (diodes) tuned for 940nm light\u003c\/li\u003e \u003cli\u003e5 x IR receivers (diodes) ready to detect 940nm IR light\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy 940nm infrared matters\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eNear-infrared light is less visible to the eye, enabling non-intrusive sensing for experiments and demonstrations.\u003c\/li\u003e \u003cli\u003eIdeal for line-following experiments, obstacle detection, and simple IR communication drills with microcontrollers.\u003c\/li\u003e \u003cli\u003eThe 940nm wavelength is widely compatible with common sensors and LED\/diode packages used in DIY robotics and education kits.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eKey setup and prototyping considerations\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003ePower and current: IR LEDs generally require a current-limiting resistor when powered from a 3V source. Start with a conservative resistor value and adjust based on brightness and power usage.\u003c\/li\u003e \u003cli\u003eAlignment and distance: For reliable sensing, place emitters and receivers with a clear line-of-sight and minimal ambient IR interference; reflective surfaces can help in line-tracking setups.\u003c\/li\u003e \u003cli\u003eArduino integration: Connect emitters to digital pins through resistors and drive them in code to emit bursts for sensing tests. Connect receivers to digital or analog inputs as part of a simple IR detection loop.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases you can tackle today\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eLine-following robots: illuminate a surface with the 940nm emitters and detect contrasts with the receivers to determine the robot’s path.\u003c\/li\u003e \u003cli\u003eObstacle sensing: monitor changes in reflected IR light to sense objects entering or leaving the sensor field.\u003c\/li\u003e \u003cli\u003eDIY IR communication experiments: perform basic, point-to-point IR signaling between microcontroller boards for educational demonstrations.\u003c\/li\u003e \u003cli\u003eClassroom and workshop projects: a tangible way to teach electronics fundamentals—forward voltage, current limiting, and sensor–actuator wiring—without expensive modules.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat makes this kit stand out for Arduino makers\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eSimple, compact set that bundles emitters and receivers in one package, accelerating prototyping and experimentation.\u003c\/li\u003e \u003cli\u003e940nm choice aligns with widely used IR sensors and practical, classroom-friendly demonstrations.\u003c\/li\u003e \u003cli\u003eDurable components designed for hobbyist use, enabling quick iterations from concept to testable prototype.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePro tips to maximize results\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eVerify polarity and wiring before powering the diodes; a small mistake can affect both emission and reception.\u003c\/li\u003e \u003cli\u003eWhen testing with Arduino, begin with a basic sketch that toggles emitters and reads the receiver state to confirm clean signal changes before integrating into larger projects.\u003c\/li\u003e \u003cli\u003eExperiment with different distances and angles to understand the sensor’s responsiveness in your environment.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Electronics","offers":[{"title":"10SET 3MM 940nm","offer_id":56769902248284,"sku":"10SET 3MM 940nm","price":0.6,"currency_code":"GBP","in_stock":true},{"title":"1 SET 3MM 940nm","offer_id":56769902281052,"sku":"1 SET 3MM 940nm","price":0.36,"currency_code":"GBP","in_stock":true},{"title":"10PCS Receiver Diode","offer_id":56769902313820,"sku":"10PCS Receiver Diode","price":0.48,"currency_code":"GBP","in_stock":true},{"title":"10PCS Infrared Diode","offer_id":56769902346588,"sku":"10PCS Infrared Diode","price":0.48,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1000\/2042\/0956\/files\/Sb86841346cb544109c288ee49b8d770bI.webp?v=1771502784","url":"https:\/\/robotbuilder.co\/products\/f3-3mm-940nm-leds-infrared-emitter-and-ir-receiver-diodes-each-5pcs-infrared-to-tube-for-arduino","provider":"Electronics","version":"1.0","type":"link"}