DIY USB light bulb

A useful homemade product that will definitely come in handy almost anywhere where there is USB:
  • At home for lighting: you can connect it to either a computer or a laptop.
  • On a hike, fishing or hunting: you can connect it to an external battery (power bank) and the lighting in a tent or outdoors is ready!
  • In the car for illumination: now every radio has a USB input. If you make the wire longer, you can generally use it as a mobile inspection lamp.
  • There are quite a few other uses.

DIY USB light bulb

DIY USB light bulb

DIY USB light bulb

What do you need for a USB lamp?


  • USB cable from any unnecessary charging.
  • LEDs 1-3 W power.
  • A pair of 5-500 Ohm resistors - the resistance depends on the brightness of the light LEDs.
  • Non-working 220 V LED light bulb.

What you need for a USB lamp

What you need for a USB lamp

Making a USB lamp


Let's disassemble the light bulb. To do this, you need to pry off the white dome with a flat screwdriver. It is glued and should gradually release from your pressure.
Making a USB lamp

Making a USB lamp

We remove the internal board, we will no longer need it, we will have our own.
Making a USB lamp

We make a hole in the base for the wire with a hot soldering iron. You can simply drill it with a drill.
DIY USB light bulb

We pass the wire to power the light bulb.
DIY USB light bulb

We now need to assemble a very simple power supply circuit LEDs from USB - 5 V.
putting together a diagram

We do everything on a piece of plastic. My brightness is low, but if you want brighter, you need to do everything on an aluminum piece of metal. For better heat removal from LEDs. The resistance of the resistors can also be used to adjust the glow power LEDs, and hence their heating.
DIY USB light bulb

We glue our assembled board to the light bulb. Glue with hot glue.
DIY USB light bulb

Now let's assemble the light bulb. Glass can be glued with super glue.
DIY USB light bulb

Here's what the finished USB-powered lamp looks like.
DIY USB light bulb

Here's how to glow. Almost like the light before when it worked on 220 V. LEDs You can take something more powerful and larger in quantity. But in this case, the current consumption will also increase, which may affect the USB load. I made the best option.
How does a USB light glow?

Watch the video


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