In this tutorial, I’ll show you how to connect a
solar panel to your phone so that you never
run out of power. There are lots of variations of
this circuit, so make sure to verify your phone’s
capabilities and ports, and your solar panel specs,
before beginning.
1. SET UP THE CHARGING CABLE
First, cut the existing connector off the solar
panel and place it on the back of the phone case
to get the right position. Measure and cut the
wire so that it can be plugged in, but doesn’t have
much extra slack. Put the heat-shrink tube on,
and solder the red and black wires to the USB
connector (Figure
M
). Heat the tubing so that the
USB circuitry is covered (Figure
N
).
MAKE A SOLAR PHONE CHARGER
TIME REQUIRED:
1–2 Hours
DIFFICULTY:
Easy
COST:
$50–$60
MATERIALS
» 5V solar panel, smaller than your
phone
» USB-C plug or whichever port your
phone takes
» Heat-shrink tubing
» Metal hinges, small
» Gorilla Super Glue Gel
» Rare earth magnet, tiny and flat
» Phone case, with a magnetic base
» Cable holder 3D-print the free file
from makezine.com/go/solar-phone-
charger, or buy a tiny cable clip.
TOOLS
» Soldering iron and solder
» Heat gun or butane lighter
» 3D printer (optional) to print a cable
holder
Lee Wilkins
M
N
79
make.co
M82_074-80_SquishyTech_Lee_F1.indd 79M82_074-80_SquishyTech_Lee_F1.indd 79 7/12/22 10:46 AM7/12/22 10:46 AM
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