DIY Smartphone Notification Lamp





Introduction: DIY Smartphone Notification Lamp

About: I love writing, I make video in MY UPLOADED VIDEOS channel in Youtube for my instruction, and i love making something.


So many gadgets for your smartphone, but it's not cheap for you buy it. So now i will show you how to make unique gadget for your smartphone for cheap and under 30 minutes to make it. I will make Smartphone notification lamp because its so useful when i have new notification or any new message and this gadgets can use as flashlight.

Let's Make It!!

Step 1: Tools and Materials You Will Need


  • Old audio jacks (Use 3.5 mm jack)
  • 1 Low voltage LED (Use the low voltage led for best result)


  • Soldering iron
  • Hot glue gun / any glue for make the case

Step 2: Open the Case

Take the audio jack and open the case slowly, Don't broken the inside.

Step 3: Search the Output Voltage

  • Take your smartphone
  • Plug in the audio jack
  • Listen any music on your smartphone and set the volume full.
  • Paste the led and search the positive and negative output
  • And its look like image 4 and 5

Step 4: Solder It!

Take your soldering iron and solder it slowly. After that its look like image.

Step 5: Make the Case

Make the case for looking best. I use hot glue to make the case like image.But you can use anything for make the case. And cover it using heat shrink tubing or anything. I use white tape to cover it.

Step 6: Finish

  • Plug in this gadget to your smartphone
  • Set the audio volume on your smartphone full
  • And if you get new Notification or new message, the led will on
  • To see how it works, watch the video

Step 7: Thanks

All finish, I hope you enjoy this. Don't forget to like, subscribe, and vote me :)

Sorry for my bad english.


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20 Discussions

not a bad idea. I wonder if it could be done with an rgb led

Does this light work on Iphones, I noticed you have a samsung and when I assembled mine, the LED never lights(polarity is correct and wiring is correct) And when tested the jack should drive enought power to light the LED (I tested a 1W 8Ohm speaker which worked on the jack.) But the LED never lights even when I know the jack is working. I also tried multiple LEDS.

I have an iPhone SE.

Nice thinking! If you use a headphone splitter you can still use your headphones while getting LED notifications.

This would be great to bring to the library!

1 reply

It doesn't work. Can't even strip the plug !


1 year ago

Maybe a stupid question. Do you plug out when you answer the call? I think speaker and microphone will be off when it is plugged in.

1 reply

I suspect this will only work if you have some kind of notification sound enabled with enough energy to light the LED. For instance the Pop on my droid probably won't work.


1 year ago

So, dumb question: the power for the LED comes from the audio signal traveling through the audio port, right?

This is really neat. I like it. It would be cool to use RGB LEDs and watch how the LEDs mix colors with the notification. I think I'll try it!

Cool enough.. to be a 'ible Yeah. but...... where do you put this gadget when you wanna plug in your headphones? :) By the way.. I'm irritated of there to be these plugs, (jack's), of several dimensions like 1,4mm 1,8mm 2,1mm 2,4mm 2,8mm........3,1mm ...6,0mm. hmm......

I wish to correct the author:

"Old audio jacks (Use 3.5 mm jack)"

That is the wrong item or description. The correct item is a plug since the jack is already in the smartphone. I recommend correcting this error soon because I may be the first of many comments about this error.


1 year ago

Excellent. My iphone 6 s plus has this feature under accessibilty. I love it and it is very useful, especially when I am in a noisy setting and wouldn't hear the notification. I can easily see this in my pockets and purse's outer pocket.

1 reply

Thanks. i hope you enjoy this. Happy making

This is so cool yet so simple! I bet it can even activate other types of things haha

1 reply