Solar Charger Desk Stand
Build a stand that aims a ready-made solar charger at the sun — and measure what angle works.
One weekend · about 90 minutes of active work
Use only a finished, manufacturer-rated USB solar charger. An adult checks it before any phone is connected. No homemade batteries or cut cables.
Materials
- —A finished USB solar charger rated for phones
- —Your phone's undamaged charging cable
- —Reused cardboard, tape, ruler, pencil
- —Optional: a borrowed plug-in USB power meter
- —A notebook for the sunlight log
Steps
- 1. Sunlight log15 min, spread over a day
Check your desk at three times. Write: time, direct sun or shade. Direct sun makes a sharp shadow.
- 2. Plan the layout10 min
Mark where the panel goes and a shaded spot for the phone, within cable reach and away from drinks.
- 3. Build the stand30 min
Fold and tape cardboard into a triangle support with three notches for different angles. Keep any vents uncovered.
- 4. Angle test30 min
With an adult, try each notch. Use the charger's indicator or the USB meter. Record which angle gives the strongest reading. Stop if anything gets hot.
- 5. Look again5 min
Write what surprised you. Does the best angle change by time of day?
Field Notes
Write these in your notebook when you finish:
- □Best angle and time
- □What shaded the panel
- □What I would test next