Hard⏱ time2 hr$ cost20
Solar Phone Charger
Wire solar cells to charge a small battery or device from sunlight.
Start building ↓
Result first
The build
Step 01
Check the panel
Measure the panel's voltage in sun.
Step 02
Add a regulator
Wire a USB charge module for steady output.
Step 03
Connect
Link panel to module to device.
Step 04
Charge in sun
Track the charge gained.
Working Principle
The solar cells turn sunlight into a voltage; a regulator conditions it to the steady level a device safely needs.
The science behind it
A closer look
Photovoltaic cells free electrons when light hits them; the module ensures the output matches charging requirements.
Take it further
Variables to test
- 1 Compare full sun vs cloud charging rate.
- 2 Angle the panel — find the best tilt.
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