What is this black thing next to the capacitor??? is it an LDR?
http://flickr.com/photos/34820337@N05/3239709484/in/photostream/
http://flickr.com/photos/34820337@N05/3239709262/in/photostream/
http://flickr.com/photos/34820337@N05/3238870929/in/photostream/
It ha the shape of half a cilider, and two terminals comming out of it... what is it?
it was in an IR controlled mini car...
http://flickr.com/photos/34820337@N05/3239709262/in/photostream/
http://flickr.com/photos/34820337@N05/3238870929/in/photostream/
It ha the shape of half a cilider, and two terminals comming out of it... what is it?
it was in an IR controlled mini car...
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Jan 31, 2009. 5:50 AMamando96 (author)
says:
hmm never thought of that... maybe it is... but then where is the IR receiver? :O
Jan 31, 2009. 10:10 AMalex-sharetskiy
says:
never mind my dumb idea, i clicked the first picture and it looked silver to me that should be a IR receiver does it have any markings on it? or on the circuit board
Jan 31, 2009. 10:39 AMamando96 (author)
says:
no markings at all, or i would have searched them on google... thats why it's being hard to indentify it...
Mar 8, 2009. 3:26 PMamando96 (author)
says:
yea IR something, not transistor though coz they detect veriations of light or something like that... anyways made an IR proximity detector with it ha
Jan 31, 2009. 11:13 AMamando96 (author)
says:
yea... but like IR what? lol transistor, resistor... something else... :O
Feb 3, 2009. 1:51 PMste5442
says:
It is more than likely the IR receiver.
The device has two pins, one called the 'collector' and one called the 'emitter' I suspect. Connect a voltmeter across the two pins and point the IR transmitter (the remote) at the sensor. You should see the voltage flick between 'something' (depending on the supply voltage) and a few hundred mV as the transistor turns on and off.
The chances are that there is some modulation happening so you probably need a scope to see the changes - a DMM (and your eyes!) would be too slow to see the changes!
Hope this helps!
PCBPolice Electronics Forum - we need some users....please!
The device has two pins, one called the 'collector' and one called the 'emitter' I suspect. Connect a voltmeter across the two pins and point the IR transmitter (the remote) at the sensor. You should see the voltage flick between 'something' (depending on the supply voltage) and a few hundred mV as the transistor turns on and off.
The chances are that there is some modulation happening so you probably need a scope to see the changes - a DMM (and your eyes!) would be too slow to see the changes!
Hope this helps!
PCBPolice Electronics Forum - we need some users....please!
Jan 31, 2009. 11:17 AMalex-sharetskiy
says:
a resistor that changes it's resistance when Infra Red light is shined on it
Feb 3, 2009. 1:51 PMste5442
says:
Feb 3, 2009. 4:02 PMalex-sharetskiy
says:
dude, i don't like spam :( just tell those people on the forum about instructables.. much easier post a forum topic on your website
Jan 30, 2009. 2:39 PMUziMonkey
says:
Probably not. It's probably some IR receiver IC. It having only two pins would be a big clue here, as most things in this TO-style package have three pins.
Feb 3, 2009. 1:52 PMste5442
says:
Another thing to note is that the casing of the device is actually a filter - it looks totally opaque but its not to IR.
PCBPolice Electronics Forum - we need some users....please!
PCBPolice Electronics Forum - we need some users....please!
Feb 3, 2009. 3:25 PMamando96 (author)
says:
Just did that, the voltage(or something) defenantly changes when an IR light is shined on it... so i guess it is... lol
Feb 3, 2009. 2:15 PMamando96 (author)
says:
ya i forgot about that, so that normal light cant interfeere with the IR signals...
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