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What is this cable/device?


2.5mm Jack to USB data CableWhat Type of cable is this?Some help with 9V Longlife VARTA batteries?LED lamps keep glowing when dimmer is turned offNoise (capacitance-related?) in serial signalSimple voltage/wattage/resistor question about night lightArduino getting a bit of power after disconnecting supplyReqForHelp: Understanding Vf relationship to supplied V and ANeoPixel led WS2812B shines the right color only every 2nd timeAdvice for LED project






.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;








2












$begingroup$


I hope I'm on the appropriate site.



Does anyone know what this thing is?



It has a mini mono plug.
The white square is slippery..but it is not covering double-sided tape.
A white LED did not light up when I plugged it into a mic input on my PC.
I thought there were little holes and it might be a mic but they are small indentations, not holes.



Thanks!



enter image description here



enter image description here










share|improve this question









$endgroup$











  • $begingroup$
    Could be anything, but maybe a piezo mic?
    $endgroup$
    – Wesley Lee
    Mar 23 at 19:16










  • $begingroup$
    When I plugged it into a PC I tried to record with it...but nothing. And why the LED?
    $endgroup$
    – Steve Wellens
    Mar 23 at 19:21






  • 2




    $begingroup$
    I've seen similar things before used to put remote photodiodes on a remote-operated device. I have one on an HDMI splitter and it uses the same connector. I can't say for sure, but I'm guessing the LED is a photodiode (or an LED being used as a photodiode) and this is meant to be plugged into one very specific device and nothing else. A picture showing the "LED" might be a good idea, by the way.
    $endgroup$
    – Hearth
    Mar 23 at 19:23











  • $begingroup$
    The bottom picture includes the LED. Maybe I should have angled the shot.
    $endgroup$
    – Steve Wellens
    Mar 23 at 20:42

















2












$begingroup$


I hope I'm on the appropriate site.



Does anyone know what this thing is?



It has a mini mono plug.
The white square is slippery..but it is not covering double-sided tape.
A white LED did not light up when I plugged it into a mic input on my PC.
I thought there were little holes and it might be a mic but they are small indentations, not holes.



Thanks!



enter image description here



enter image description here










share|improve this question









$endgroup$











  • $begingroup$
    Could be anything, but maybe a piezo mic?
    $endgroup$
    – Wesley Lee
    Mar 23 at 19:16










  • $begingroup$
    When I plugged it into a PC I tried to record with it...but nothing. And why the LED?
    $endgroup$
    – Steve Wellens
    Mar 23 at 19:21






  • 2




    $begingroup$
    I've seen similar things before used to put remote photodiodes on a remote-operated device. I have one on an HDMI splitter and it uses the same connector. I can't say for sure, but I'm guessing the LED is a photodiode (or an LED being used as a photodiode) and this is meant to be plugged into one very specific device and nothing else. A picture showing the "LED" might be a good idea, by the way.
    $endgroup$
    – Hearth
    Mar 23 at 19:23











  • $begingroup$
    The bottom picture includes the LED. Maybe I should have angled the shot.
    $endgroup$
    – Steve Wellens
    Mar 23 at 20:42













2












2








2





$begingroup$


I hope I'm on the appropriate site.



Does anyone know what this thing is?



It has a mini mono plug.
The white square is slippery..but it is not covering double-sided tape.
A white LED did not light up when I plugged it into a mic input on my PC.
I thought there were little holes and it might be a mic but they are small indentations, not holes.



Thanks!



enter image description here



enter image description here










share|improve this question









$endgroup$




I hope I'm on the appropriate site.



Does anyone know what this thing is?



It has a mini mono plug.
The white square is slippery..but it is not covering double-sided tape.
A white LED did not light up when I plugged it into a mic input on my PC.
I thought there were little holes and it might be a mic but they are small indentations, not holes.



Thanks!



enter image description here



enter image description here







led cables plug






share|improve this question













share|improve this question











share|improve this question




share|improve this question










asked Mar 23 at 19:13









Steve WellensSteve Wellens

1133




1133











  • $begingroup$
    Could be anything, but maybe a piezo mic?
    $endgroup$
    – Wesley Lee
    Mar 23 at 19:16










  • $begingroup$
    When I plugged it into a PC I tried to record with it...but nothing. And why the LED?
    $endgroup$
    – Steve Wellens
    Mar 23 at 19:21






  • 2




    $begingroup$
    I've seen similar things before used to put remote photodiodes on a remote-operated device. I have one on an HDMI splitter and it uses the same connector. I can't say for sure, but I'm guessing the LED is a photodiode (or an LED being used as a photodiode) and this is meant to be plugged into one very specific device and nothing else. A picture showing the "LED" might be a good idea, by the way.
    $endgroup$
    – Hearth
    Mar 23 at 19:23











  • $begingroup$
    The bottom picture includes the LED. Maybe I should have angled the shot.
    $endgroup$
    – Steve Wellens
    Mar 23 at 20:42
















  • $begingroup$
    Could be anything, but maybe a piezo mic?
    $endgroup$
    – Wesley Lee
    Mar 23 at 19:16










  • $begingroup$
    When I plugged it into a PC I tried to record with it...but nothing. And why the LED?
    $endgroup$
    – Steve Wellens
    Mar 23 at 19:21






  • 2




    $begingroup$
    I've seen similar things before used to put remote photodiodes on a remote-operated device. I have one on an HDMI splitter and it uses the same connector. I can't say for sure, but I'm guessing the LED is a photodiode (or an LED being used as a photodiode) and this is meant to be plugged into one very specific device and nothing else. A picture showing the "LED" might be a good idea, by the way.
    $endgroup$
    – Hearth
    Mar 23 at 19:23











  • $begingroup$
    The bottom picture includes the LED. Maybe I should have angled the shot.
    $endgroup$
    – Steve Wellens
    Mar 23 at 20:42















$begingroup$
Could be anything, but maybe a piezo mic?
$endgroup$
– Wesley Lee
Mar 23 at 19:16




$begingroup$
Could be anything, but maybe a piezo mic?
$endgroup$
– Wesley Lee
Mar 23 at 19:16












$begingroup$
When I plugged it into a PC I tried to record with it...but nothing. And why the LED?
$endgroup$
– Steve Wellens
Mar 23 at 19:21




$begingroup$
When I plugged it into a PC I tried to record with it...but nothing. And why the LED?
$endgroup$
– Steve Wellens
Mar 23 at 19:21




2




2




$begingroup$
I've seen similar things before used to put remote photodiodes on a remote-operated device. I have one on an HDMI splitter and it uses the same connector. I can't say for sure, but I'm guessing the LED is a photodiode (or an LED being used as a photodiode) and this is meant to be plugged into one very specific device and nothing else. A picture showing the "LED" might be a good idea, by the way.
$endgroup$
– Hearth
Mar 23 at 19:23





$begingroup$
I've seen similar things before used to put remote photodiodes on a remote-operated device. I have one on an HDMI splitter and it uses the same connector. I can't say for sure, but I'm guessing the LED is a photodiode (or an LED being used as a photodiode) and this is meant to be plugged into one very specific device and nothing else. A picture showing the "LED" might be a good idea, by the way.
$endgroup$
– Hearth
Mar 23 at 19:23













$begingroup$
The bottom picture includes the LED. Maybe I should have angled the shot.
$endgroup$
– Steve Wellens
Mar 23 at 20:42




$begingroup$
The bottom picture includes the LED. Maybe I should have angled the shot.
$endgroup$
– Steve Wellens
Mar 23 at 20:42










1 Answer
1






active

oldest

votes


















6












$begingroup$

That's an infrared transmitter for extenders or control systems. That plastic chunk with the IR LED gets glued on a device like TV or Blu-Ray player so that it shines on the device's IR receiver.






share|improve this answer









$endgroup$












  • $begingroup$
    Thanks! I guess I can throw it in my junk cables box.
    $endgroup$
    – Steve Wellens
    Mar 23 at 20:43











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1 Answer
1






active

oldest

votes








1 Answer
1






active

oldest

votes









active

oldest

votes






active

oldest

votes









6












$begingroup$

That's an infrared transmitter for extenders or control systems. That plastic chunk with the IR LED gets glued on a device like TV or Blu-Ray player so that it shines on the device's IR receiver.






share|improve this answer









$endgroup$












  • $begingroup$
    Thanks! I guess I can throw it in my junk cables box.
    $endgroup$
    – Steve Wellens
    Mar 23 at 20:43















6












$begingroup$

That's an infrared transmitter for extenders or control systems. That plastic chunk with the IR LED gets glued on a device like TV or Blu-Ray player so that it shines on the device's IR receiver.






share|improve this answer









$endgroup$












  • $begingroup$
    Thanks! I guess I can throw it in my junk cables box.
    $endgroup$
    – Steve Wellens
    Mar 23 at 20:43













6












6








6





$begingroup$

That's an infrared transmitter for extenders or control systems. That plastic chunk with the IR LED gets glued on a device like TV or Blu-Ray player so that it shines on the device's IR receiver.






share|improve this answer









$endgroup$



That's an infrared transmitter for extenders or control systems. That plastic chunk with the IR LED gets glued on a device like TV or Blu-Ray player so that it shines on the device's IR receiver.







share|improve this answer












share|improve this answer



share|improve this answer










answered Mar 23 at 19:27









JustmeJustme

3,1282413




3,1282413











  • $begingroup$
    Thanks! I guess I can throw it in my junk cables box.
    $endgroup$
    – Steve Wellens
    Mar 23 at 20:43
















  • $begingroup$
    Thanks! I guess I can throw it in my junk cables box.
    $endgroup$
    – Steve Wellens
    Mar 23 at 20:43















$begingroup$
Thanks! I guess I can throw it in my junk cables box.
$endgroup$
– Steve Wellens
Mar 23 at 20:43




$begingroup$
Thanks! I guess I can throw it in my junk cables box.
$endgroup$
– Steve Wellens
Mar 23 at 20:43

















draft saved

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