Today we’re going to DIY to rebuild an electric car lamp:
Preparing of DIY Electric Car Lamp
The effect of DIY modification is to use USB bus as the power input interface to replace the previous control line to input directly as following picture.
Material Tool Preparation of electronic car lamp
- Electric car lamp 1
- USB base 1
- Wire tools, etc.
Design Principle of Car Lamp
First, the input and control of this electric lamp is > 12V power supply. There are two control terminals, LED and speaker, and three control lines at the public ground terminal. Connect the four pin ends of the USB base with the pad on the circuit board of the car lamp according to the figure below. Later, a car lamp controller connected to the USB base can be used.First,
DIY process sharing
As you can see from previous disassembly articles, this electric car lamp is easy to disassemble.
There are four fixed screws at the bottom:
Remove four fixing screws:
You can see the internal structure:
The circuit board is fixed to the radiating aluminium sheet:
Find three pad contacts for the control line:
Open the hole at the bottom, then install the USB base and fix it with hot melt adhesive.
Then the USB wire is welded to the corresponding control end pad of the circuit board.
After the welding is finished, the wiring is arranged and the cover can be closed.
Finally, stick a label on it.
My Felling about diy car lamp
This DIY transformation of electric vehicle lamp uses USB base as power input interface, mainly considering the high frequency of use of USB interface, and four pin input meets the requirements of the number of lines for this power input, and then will continue DIY, a special vehicle lamp controller powered by mobile power supply, so that there is no power supply in bicycles and other places. The 5V portable power supply can also be used on the riding equipment for normal use.