[ad_1]
The Photo voltaic Bottle Lamp is a solar-powered mild that reuses a waste plastic bottle by attaching a 3D-printed photo voltaic lamp instead of the previous plastic cap. It additionally makes intelligent use of the light-refracting properties of water!
I designed this lamp as a low-cost resolution for lighting rural houses, changing their dangerous kerosene lamps and on the similar time upcycling among the thousands and thousands of waste plastic bottles which can be every day thrown into the rubbish. These lamps are additionally nice for adorning a backyard, for tenting or touring, or for emergencies when the ability is out.
A Liter of Gentle
My design was impressed by the Moser bottle daylight lamp invented by Brazilian mechanic Alfredo Moser. The idea is that clear plastic beverage bottles stuffed with water will be mounted into the roof of an unlit constructing to refract daylight round a room, equal to a 40W–60W bulb. In 2011, Illac Diaz used Moser’s know-how to begin Liter of Gentle, a grassroots motion to supply photo voltaic lighting to communities world wide.
The Moser bottle is straightforward and cheap, however it solely works throughout the daytime. So I designed a photo voltaic bottle cap that may present mild throughout the night time.
How the Circuit Works
A
The photo voltaic lamp will be thought-about as a standalone photo voltaic photovoltaic (SPV) system and comprises 4 primary elements (Determine A):
• Photo voltaic panel — converts photo voltaic power to electrical power
• Controller — costs the battery (charger) and drives the load (driver)
• Battery — shops {the electrical} power
• Load (LED) — gives the specified mild output
The circuit, proven in Determine B on the next web page, will be broadly divided into two elements. The charger circuit extracts energy generated by the photo voltaic panel throughout the day and costs the battery. It’s based mostly on a TP4056 single-cell Li-ion charger module. The LED driver circuit powers the LED, robotically switches it on at night time, and controls the brightness.
B
Throughout the day, the photo voltaic cell generates voltage and turns ON the transistor Q2, so it doesn’t have the present bias to the bottom of transistor Q1. Q1 is OFF so the LED will exit.
When there is no such thing as a daylight, there’s no photo voltaic present to base Q2 so it won’t conduct, however on the similar time, transistor Q1 will conduct. Now the battery’s present will stream to the LED via the resistors (R3 or R4).
The three-pin button swap is used to attach both R3 or R4 within the LED circuit. When the pole is related to R3, the brightness is Low (excessive resistance, low LED present) and when related to R4, the brightness is Excessive (low resistance, excessive LED present). You may study extra in regards to the circuit in my video.
Bottled Sunshine
Get pleasure from your new Photo voltaic Bottle Lamp! You can also make a number of related bottle lamps and place them round your backyard or garden.
Cost it
• USB charging — Earlier than the primary use, it’s endorsed to cost the battery. You may simply cost the lamp via a micro USB cable by connecting it to any USB energy supply like a telephone charger. The crimson LED signifies that the battery is charging and the blue LED signifies charging is full.
• Photo voltaic charging — You too can cost the battery by putting the bottle lamp in vibrant daylight for no less than a day (Determine S).
S
TEST IT
Press the button swap to set the specified brightness (Low/Excessive) and take a look at the lamp by masking the photo voltaic cell together with your hand. The sunshine ought to be turned on (Determine T)!
T
Place the bottle lamp within the vibrant daylight, and the photo voltaic cell will cost the battery. When the solar goes down, the lamp shall be robotically switched on (Determine U).
U
MODIFY IT
• Weatherproofing — You may apply epoxy spray paint on the joint of the 3D-printed enclosure to make it extra water-resistant. Apply conformal coating to the PCB to guard the board and its elements from the surroundings and corrosion.
• Simpler construct — Use a PVC-wrapped battery with its personal JST connector to keep away from use of terminal plates.
• Gentle mods — Add some cleaning soap resolution to the water to diffuse the sunshine extra, or add meals coloring to make the sunshine coloured.
• Roof mount — To mild a room or shed, you may observe Liter of Gentle’s directions for mounting the lamp on the roof.
Undertaking Steps
1. ASSEMBLE THE PCB2. 3D PRINT THE ENCLOSURE3. MOUNT THE SOLAR PANEL
[ad_2]