DIY SOLAR FLASHLIGHT

Introduction: DIY SOLAR FLASHLIGHT

I built this flashlight so i would have one that used sunlight and didn't require any batteries. When fully charged it can stay lit in approx 30 minutes.

Step 1: What You Will Need

Step 2: The Circuit

Step 3: Putting on the Solar Panel

Step 4: Add the Capacitors

Step 5: Mounting the Switch

Step 6: Mounting the LED's

Step 7: Connecting the LED's

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    14 Comments

    1
    mikailmansor37
    mikailmansor37

    Question 1 year ago

    Hello, i wanna ask you how long does it takes to charge the flashlight & what is the formula to calculate the charging time & the runtime of the flashlight ?

    0
    Radionuclei95
    Radionuclei95

    Answer 1 year ago

    I don't know a formula, but the LEDs should take about 16mAh each which makes a total of 48mAh. And the total capacity is 6 Farad. I don't know how much that is in mAh, so I don't really know how to calculate it. I'm sorry but that's all I can do, I hope it helps somewhat.

    0
    destinykoskela
    destinykoskela

    Question 2 years ago on Step 1

    Would you be able to list the name of each material you used? I’m just getting into this and need to know what things are called and what kinda of resistor and what the cap metal things are, so I’m able to buy them

    0
    jack.atr1210
    jack.atr1210

    Question 3 years ago on Introduction

    Can you provide me with the model or a link for the solar panel?

    0
    mdempsey617
    mdempsey617

    5 years ago

    Hello!

    This project is awesome and just what I was looking for. I am traveling to Honduras in a few weeks with a group of engineering students and we are attempting to teach children at an orphanage about solar energy. On top of that, we are wanting to give these children a sustainable technology they can use in their everyday life - hence the flashlight. Due to the frequent and unpredictable power outages the orphanage faces, I was wondering if there was a way to make this particular design last for a few hours rather than 30 minuets. Would replacing the capacitors with rechargeable batteries help? I would appreciate any suggestions you have.

    Thanks!

    0
    jerrymonkey123
    jerrymonkey123

    6 years ago

    normally the cap's limit voltage will be twice.Ex your solar is 5.5 then for safety you should use 12V or 16V. Caps are as danger as a lipo battery.IT EXPLOSES!!

    0
    GeckoDiode
    GeckoDiode

    7 years ago on Introduction

    If the capacitance of the super capacitors were higher, would the flashlight stay lit longer?

    0
    bergerab
    bergerab

    8 years ago on Introduction

    Personally I'd love to see some more textual explanation of your steps, but all in all you nailed it! The project looks really professional and sleek!

    0
    sammydogjj
    sammydogjj

    8 years ago

    Nice profile pic ;) lol

    0
    dbyrd26
    dbyrd26

    8 years ago

    Very nice instructable. I like your use of supercapacitors!