1. Materials and tools
material:
1500mAh mobile phone battery X2
MC34063 3V liter 5V board X1
TP4056 Lithium Battery Charging Board X1
USB female X1
How many panels are left for decoration
tool:
Electric soldering iron
Hot melt glue gun and glue stick
Utility knife
File
AB glue
scissors
And a pair of dexterous hands (this is a must drop)
Two, production and testing
Put the material in a shape first, and record the length, width and height to cut the board
Then start cutting
The next step is to solder, connect the parts together with wires
Glue the boards together with hot melt glue
Test it, use a USB light
Pouring AB glue in the hole of the net indicator light can create a dim light
Finally it’s finished. Use a file and a utility knife to trim the corners to make it more rounded.
Because I forgot to consider the thickness of the board, I re-cut it several times and I was exhausted.
Try plugging in a USB fan
Then charge it, the red indicator light is on
After a few hours, the battery is fully charged and the green light is on
Three, summary and perception
This time the production is finally completed, because the 34063 is used, the current can only reach 300~400mA
What makes me depressed is that the booster board of the kit can reach more than 300 mA and almost does not generate heat, but the self-made one can only reach 200 mA and has a huge heat.
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