DIY InfraRed Sensor

Wonder how to get started? Is definitely simple!

Infrared(IR) sensor is a sensor used to detect absence and presence of object. Also Infrared sensor can be used for robot line tracking.  It is a very low cost sensor which can be done by ourselves. An Infrared sensor has a pair of infrared transmitter and receiver. Resistors are needed in order to do the Infrared sensor circuit.

Let's have a quick look on this video to understand what is IR sensor and how it works: http://www.youtube.com/watch?v=vBZZqGXnuv4

Infrared transmitter and receiver

Resistor

LED 1 is the infrared transmitter, Q1 is the receiver

Let's get started! Take the first step to do the Infrared sensor circuit. 

• First, you need to have soldering tools such as soldering gun and soldering lead. 
• Then, place the resistors, infrared transmitter and receiver on a doughnut board.
• Solder the components iron pin to fix them on the doughnut board, then solder the track to connect to another component by referring the schematic above.   
• Complete the circuit as shown in the schematic above.

Here is the video to learn how to soldering. Enjoy it.

http://www.youtube.com/watch?v=vHRiDOeYrHU

Congratulation! You have done the IR sensor!