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Test and Adjustment of IR Sensor System 

 

 

 

Educational Revision

  

BEST Robotics Inc © 2019  

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Test & Adjustment of the IR Sensor System 

Goal: 

To conduct simple tests for correct operation of the assembled BEST IR Sensor Kit 

and to make adjustments for sensitivity. 

Materials Needed 

 

 

BEST IR Sensor System (Assembled PCBs) 

 

5V Power Supply  

 

Mini test hook probes (recommended) 

 

3-wire cables (2) 

 

Solderless breadboard (optional) 

 

Oscilloscope or frequency counter (optional) 

 

 

This document will walk you through testing the BEST IR Sensor System’s operation and adjusting its 
sensitivity.  

Step 1: Separate the PC Boards 

 

 

 

  In the kit the two PC boards are manufactured as a single board to make it a little larger for 

easier assembly.  After soldering on all the components, the two boards will be cut apart.   If you have 
not already done so, cut the board as described in the final step of the assembly instructions. 

 

 

Receiver 

Transmitter 

Carefully Cut Boards Apart Here 

Summary of Contents for IR Sensor System

Page 1: ...re cables 2 Solderless breadboard optional Oscilloscope or frequency counter optional This document will walk you through testing the BEST IR Sensor System s operation and adjusting its sensitivity Step 1 Separate the PC Boards In the kit the two PC boards are manufactured as a single board to make it a little larger for easier assembly After soldering on all the components the two boards will be ...

Page 2: ... two boards The IR detecting IC is the dark 3 legged device with a bump on its side located on one edge of the board The bump is a lens so the IR should shine on the bump Note that as supplied it is looking in the plane of the board If you want it to look in a direction perpendicular to the plane of the board carefully bend the IC back so the bump is away from the board There is a clear area on th...

Page 3: ...nected Using another 3 wire cable connect the receiver board to the transmitter board The male end of the cable plugs into the 3 pin socket on the receiver board J3 with black wire connected to the same end as that of the first cable on J2 Note that the cable s connector will be offset 0 1 from the first cable s connector The female end of this cable plugs onto the 3 pin connector on the XMT board...

Page 4: ...IP to monitor the frequency If you lack that equipment don t panic You can do a pretty good job without any special test equipment Separate the transmitter and receiver until the receiver just barely detects the IR signal Now when you adjust the potentiometer you should find that the receiver detects the IR signal somewhere in the middle of its range of travel but does not detect the IR signal at ...

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