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Infrared object detector.

Component
 
OddBot's picture
By OddBot
@ December 3, 2009

Price: 
$4.8 USD
Vendor's Description: 


Dagu now stocks this IR detector. It has an adjustable range from 3cm to 80cm and a dgital output with indicating LED. Although it can't be used to measure distance it can be used as a cheap alternative to an Ultrasonic or Sharp IR sensor if you just want basic object advoidance navigation. See a video of it in action here.

Specifications:

Voltage: 5V
Max Curent: 100 mA
Range: 30mm - 800mm

Diameter: 17mm
Length: 45mm
Lead: 450mm

The lead has 3 connections. Red is +5V, Green is ground and Yellow is the digital output.

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By Anas
@ Tue, 2011-03-29 08:44
Anas's picture

ok...

thank you..

By Anas
@ Mon, 2011-03-28 18:41
Anas's picture

what is the value of the pull-up resister shown in the figure? is it important or can be neglected?

 

By OddBot
@ Tue, 2011-03-29 04:21
OddBot's picture

The output is an open collector output so you must have a pullup resistor. The value is usually 10-20K.

If you are using an Arduino then you can use the internal pullup resistors which are about 20K.

By Calculon320
@ Mon, 2010-01-25 09:06
Calculon320's picture
with the little screw?
By OddBot
@ Mon, 2010-01-25 09:27
OddBot's picture
I demolished one of these to see what was inside, very little aparently and the little screw adjust the sensitivity.
By Calculon320
@ Thu, 2009-12-03 20:52
Calculon320's picture
So it's a trigger? this is exactly what calculon needs for his xmos project. is it affected by sunlight?
By OddBot
@ Fri, 2009-12-04 02:51
OddBot's picture
As this is an IR sensor I would assume that Sunlight will have some effect. Bright sunlight might reduce it's range.
By TeleFox
@ Fri, 2009-12-04 06:28
TeleFox's picture

It does look like the filter on the front is pretty thick, so hopefully the sensor can shrug off a decent amount of ambient light interference. Looks like a nice little package, saves you the hassle of aligning and protecting a normal IR couple.

By OddBot
@ Fri, 2009-12-04 07:17
OddBot's picture

I tested this sensor indoors, outdoors in the shade and outdoors in full sunlight. The range was not affected noticeably by sunlight but the reflectivity of an object makes a big difference.

As an example it detects a white wall from much farther away than a dark wooden desk.

By Benbo231
@ Thu, 2009-12-03 18:04
Benbo231's picture
My christmas list is currently one of everything in the DAGU inventory. Another awesome product, Oddbot!