How To Make a Solar Charging Bag
Watch more Fun Tech & Science Projects videos: http://www.howcast.com/guides/570-Fun-Tech-and-Science-Projects Subscribe to Howcast's YouTube Channel - http://howc.st/uLaHRS Learn to make a solar charging bag to give your electronics juice on the go. Howcast uploads the highest quality how-to videos daily! Be sure to check out our playlists for guides that interest you: http://howc.st/ytmainplaylists Subscribe to Howcast's other YouTube Channels: Howcast Health Channel - http://howc.st/HOE3aY Howcast Video Games Channel - http://howc.st/tYKKrk Howcast Tech Channel - http://howc.st/rx9FwR Howcast Food Channel - http://howc.st/umBoJX Howcast Arts & Recreation Channel - http://howc.st/vmB86i Howcast Sports & Fitness Channel - http://howc.st/vKjUjm Howcast Personal Care & Style Channel - http://howc.st/vbbNt3 Howcast empowers people with engaging, useful how-to information wherever, whenever they need to know how. Emphasizing high-quality instructional videos, Howcast brings you experts who provide accurate information in easy-to-follow tutorials on everything from makeup, hairstyling, nail art design, and soccer to parkour, skateboarding, dancing, kissing, and much, much more. Step 1: Remove the solar panel Carefully remove the solar panel from the light fixture with a screwdriver. It should have two wires soldered to a rechargeable battery. Detach the wires using the wire cutters, and strip the ends with the wire strippers. Step 2: Test the voltage Place the solar panel in direct sunlight, and touch the positive probe of the voltage meter to the panel's positive wire and the negative probe to the negative wire. The screen on the voltage meter will give you a reading. You're looking for 5 volts, the output for a standard USB cord. Tip Make sure the meter's probes are connected correctly, or the voltage meter reading will be very low or negative. Step 3: Add more solar panels If one solar panel does not provide enough volts to charge your device, add another. Solder its positive wire to the negative wire of the first solar panel. Test the voltage again. If it's still not enough, add a third panel. Step 4: Add a diode Using the soldering equipment, solder the diode to the positive wire. The diode will restrict the flow of electricity to one direction. A stripe on one end of the diode tells which way the electricity will flow through it. Face the diode stripe away from the solar panel, which will prevent any stray current from flowing back into the solar panel. Step 5: Add the USB cord Cut off the end of the USB cord that does not go into the electronic device you want to charge. Strip about a ? inch of the protective coating. Step 6: Solder the USB cord Solder the positive and negative wires in the USB cord to the corresponding wires of the solar panel. If using more than one panel, solder to the panel with the unused wires. Then, take the panels out into direct sunlight and see if they charge your device. Tip To increase the stability of the solar panels, hot glue them to a piece of cardboard. Step 7: Sew the vinyl Cut out a piece of clear plastic vinyl slightly larger than the size of the panels to act as a sleeve. Find a spot on your bag for the solar panels. Cut a small hole in the bag to fit the USB cord through, and then sew three sides of the vinyl plastic to the bag, directly over the small hole. Step 8: Add the solar panels Feed the USB cord through the hole until you can slide the solar panels into the plastic vinyl sleeve. Once you have the panels snugly inside the sleeve, sew the last side of the vinyl sleeve to the bag. Now get out there and power up! Did You Know? In 2008, an unmanned plane flew nonstop for 82 hours, 37 minutes, powered entirely by solar energy.