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DIY Portable USB Solar Charger ($20 - 4 Ports) : 5 Steps (with Pictures) - Instructables
DIY Solar USB Charger: 7 Steps (w/ Photos) - Footprint Hero
A very simple DIY solar-powered USB charger | Embedded Lab
DIY Solar Powered USB Charger | Solar One
DIY Portable USB Solar Charger ($20 - 4 Ports) : 5 Steps (with Pictures) - Instructables
DIY Solar Powered USB Mobile Charger : 7 Steps (with Pictures) - Instructables
DIY Solar Cell Phone or USB Charger
20 DIY Solar Charger Ideas – How to Make a Solar Charger
Solar USB Charger | Design for DIY Manufacturing
A very simple DIY solar-powered USB charger | Embedded Lab
Adafruit Universal USB / DC / Solar Lithium Ion/Polymer charger [bq24074] : ID 4755 : $14.95 : Adafruit Industries, Unique & fun DIY electronics and kits