This is an easy way to power an highly brightness LED for 10 hours, some parts are recycled or was buy from ebay for 1$ or less …

– Solar panel 5v – 0.5A (ebay)
– 5V Mini USB 1A TP4056 Lithium Battery Charging Board (ebay)
– LM2596 DCDC Converter (ebay or dx.com)
– A Li-On 3.7V batteries (recycled from old phone)
– A photo-resistor, 10k pot meter, 1K resistor pull down, highly brightness 10mm LED (white warm), cables, and small box…
Continuer la lecture de Revive an old garden lamp with a solar panel →