Introduction: Building an Infrared Sensor

Picture of Building an Infrared Sensor

Here is how to build and Infrared Sensor using the QRD1114 

Step 1: Parts Needed

One of : QRD1114  Light Sensor

One of : 220 Ohm Resistor

One of : 10 K Ohm Resistor

One of : 3 Wire Cable

Step 2: How It Works

Picture of How It Works

Step 3: Building the Infrared Sensor

Picture of Building the Infrared Sensor

Step 4:

Picture of


FranciscoI1 (author)2015-07-22

PulkitS1 (author)2015-06-08

brother, can I use TCRT5000 IR phototransistor instead of QRD11114
Please help

ManiA2 (author)2014-12-01


I want to turn on and turn off my LED table study lamp by moving my hand over a sensor. Hand over tuns on and hand over again to turn off. Do I need a infrared sensor and a flip flap?

What do you suggest? A simple one and as small as possible!!

NIkheel94 (author)ManiA22015-05-26

I am really sorry i missed your comment.
I dont have experince with IR sensor and Flip Flop circuit to be able to advise you on it.
Easiest thing that i can suggest would be to use an Ultrasonic sensor to detect if you hand is there or not and it works in the dark.