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1. PHOTOREFLECTOR QRD1114 FAIRCHILD SEMICONDUCTOR HOW TO
2. PHOTOREFLECTOR QRD1114 FAIRCHILD SEMICONDUCTOR PDF
3. PHOTOREFLECTOR QRD1114 FAIRCHILD SEMICONDUCTOR SERIAL
4. PHOTOREFLECTOR QRD1114 FAIRCHILD SEMICONDUCTOR PRO

Original Assignee Lenmark Enterprise Software Inc Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) ( en Inventor Uday Parshionikar Mihir Parshionikar Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Active Application number US13/418,331 Other versions US20120229248A1

PHOTOREFLECTOR QRD1114 FAIRCHILD SEMICONDUCTOR PDF

Google Patents Multipurpose controller for electronic devices, facial expressions management and drowsiness detectionĭownload PDF Info Publication number US9013264B2 US9013264B2 US13/418,331 US201213418331A US9013264B2 US 9013264 B2 US9013264 B2 US 9013264B2 US 201213418331 A US201213418331 A US 201213418331A US 9013264 B2 US9013264 B2 US 9013264B2 Authority US United States Prior art keywords sensor user signal controller electronic device Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google Patents US9013264B2 - Multipurpose controller for electronic devices, facial expressions management and drowsiness detection Keep moving in and out to get a feel for the sensor's viewing distance.US9013264B2 - Multipurpose controller for electronic devices, facial expressions management and drowsiness detection You should see the voltage dip from ~4.8V to less than 0.2V.

PHOTOREFLECTOR QRD1114 FAIRCHILD SEMICONDUCTOR SERIAL

While you monitor the voltage outputs in the serial monitor, move your hand towards the sensor's head. Int proximityADC = analogRead(QRD1114_PIN) įloat proximityV = (float)proximityADC * 5.0 / 1023.0 Īfter uploading, open your serial monitor, and set the baud rate to 9600 bps. Read in the ADC and convert it to a voltage: If this is your first time using Arduino, please review our tutorial on installing the Arduino IDE.If you have not previously installed an Arduino library, please check out our installation guide.

Note: This example assumes you are using the latest version of the Arduino IDE on your desktop.

We'll then use the jumper wires to connect from breadboard to Arduino. This resistor kit is handy for some trial-and-error testing to hone in on the most sensitive circuit possible.īreadboard and Jumper Wires - The photodetector's legs can be bent and shaped to fit a standard 0.1"-spaced breadboard. On the other half of the sensor we'll need a 10kΩ pull-up resistor to take advantage of the phototransistor's light-dependent current throughput. Resistor Kit - The LED portion of the photodetector requires a current-limiting resistor - somewhere in the range of 330Ω.

PHOTOREFLECTOR QRD1114 FAIRCHILD SEMICONDUCTOR PRO

Any Arduino-compatible development platform - be it a RedBoard, Pro or Pro Mini - can substitute. Beyond the sensor itself, the following materials are recommended:Īrduino Uno - We'll be using the Arduino's analog-to-digital converter to read in the analog output voltage of the photodetector.

PHOTOREFLECTOR QRD1114 FAIRCHILD SEMICONDUCTOR HOW TO

This tutorial serves as a quick primer on reflective photodetector's and demonstrates how to hook them up and use them. The component can be used to produce an analog signal - read by a microcontroller's analog-to-digital converter pin - proportional to a nearby object's proximity. The QRD1114 is easy to hook up: All you need is a current-limiting resistor for the IR LED and a pull-up resistor on the phototransistor's collector pin.