IR PROXIMITY SENSOR DESIGN

Thread Starter

billyredwood01

Joined Mar 4, 2021
1
I'm trying to design a IR proximity circuit using an IR LED and a photodiode. But I cannot seem to gwt it to light up a regular LED when I come into close proximity of it. Any ideas?
 

LesJones

Joined Jan 8, 2017
3,138
Post the schematic of your design that does not work. Also information about the components used, the distance between source and detector and if it works in transmisive or reflective mode.

Les.
 

LowQCab

Joined Nov 6, 2012
351
Also what the purpose of the Detector is,
what frequency it needs to operate at,
Battery or AC Powered,
and if it is expected to drive anything more than a single LED,
and any other info regarding what you are trying to accomplish.
.
.
.
 

AnalogKid

Joined Aug 1, 2013
9,188
If you are trying to use reflection, Omron and others make reflective sensor modules you can look into for guidance.

ak
 

click_here

Joined Sep 22, 2020
98
I did something similar in uni for a line sensor.

Is your IR receiver in a position where it can see the IR LED directly?

I had to wrap the outside of the IR receiver with a bit of Aluminium foil so that it would only pick up the reflected light, rather than the light coming from the LED next to it.
 
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