Desktop Solarlight

thingiverse

The Solarlight powers up when the sun sets and the lithium battery is not fully charged. Its brightness adjusts proportionally to the light it receives. A waterproof circuit, a battery holder, and a solar panel are glued together using Aquarium Silicone. This device was printed with Formfutura's HDGlass PETG material. The TP4056 charger module controls the loading of the lithium battery up to 4.2 volts. The circuit design is based on a YouTube tutorial by Edmund Brisenio. Only one 20700 lithium-ion battery is used, and the light stays on until sunrise. All components were sourced from AliExpress: * The TP4056 charger module can be found at https://de.aliexpress.com/item/5PCS-Micro-USB-5V-1A-18650-TP4056-Lithium-Battery-Charger-Module-Charging-Board-With-Protection-Dual/1852341893.html * The S9012 transistor is available at https://de.aliexpress.com/item/S9013-NPN-Transistor-Straight-Insert-TO-92-100pcs-1lot/32807254616.html * A 1-watt or 3-watt LED can be purchased at https://de.aliexpress.com/item/10pcs-lot-1W-3W-LED-Heat-Sink-Aluminum-Base-Plate-PCB-Board-Substrate-20mm-DIY-LED/32808863319.html * The solar panel is available at https://de.aliexpress.com/item/SUNWALK-6V-3W-500mA-Polycrystalline-silicon-Mini-Solar-Panel-module-Cell-for-Charger-DC-Battery-DIY/32788320504.html * A battery holder can be found at https://de.aliexpress.com/item/New-Plastic-18650-Battery-Case-Holder-Storage-Box-with-Wire-Leads-for-18650-Batteries-3-7V/32658520557.html