Hello Friends, welcome back in my new Instructables. Today I'm going to build my own smallest & 3D Printed Keychain light with inbuilt 500mah lipo battery. And trust me guys this project is going to be an amazing because I used the powerful Cree LED. Since everyone knows that how powerful Cree LED Is. Make one for yourself and enjoy!

My Self Kishan Pratap Singh, Currently I'm a student of Intermediate College. I started to make a videos on YouTube from Class 9th & I gained upto 67k Subscription after 2 Years of Hard Work by making short videos. But channel is still not monetized, so I decided to take a help of any other's tech Creator. I found a person who said that he will be monetize my YouTube channel. I trust on him & he hacked my YouTube channel via Fraud.But I didn't Give UP and started a New Channel NEXT BUILDER on YouTube. And Thankyou very much to PCBWAY Who supported me after hacking my channel. I request you guys to keep supporting me on Instructables & YouTube also.Do you know what's the reason to build this keychain light? Let me tell you, sometimes we go outside for camping or any other things. Then we need a emergency light also, if we forgot the emergency light then this tiny keychain light will helps us alot. Since it's attached to a keychain, it's always within reach, eliminating the need to search for a flashlight for light. It’s handy for tasks like unlocking doors in the dark, reading menus in dim restaurants, or checking the car's engine at night.

Step 1: Design EnclosureSince I wanna make it as small as possible so I decided to choose 3d Printing for long term use & durability. I started to design it's enclosure using Autodesk Fusion 360.

Step 2: Print EnclosureAfter successfully design the enclosure of this project. I visited to Pcbway to order the 3d Printed Parts at very affordable price. I submitted the enclosure design to there website & After a week I received my package from Pcbway and the quality of enclosure is really mind blowing. You can also order your own PCB, PCBA, 3d Printing, CNC and much more from PCBWAY. Just use the link to get $5 exclusive discount coupon. Click here

Step 3: Prepare LEDI'm using high power 3w Cree LED with high luminous. Since it will consume a lot of battery power, wo I'll recommend to use 1w led for longer backup.

The LED PCB has two solder pads with polarity marked on it.First tin the terminals apply a small amount of solder on the tip of your soldering iron.Then solder the wires with the correct polarity. You may see the above image for your referenceNow connect the both wires of LED with the lipo battery

Step 4: Charging Module ConnectionHere I'm Using TP4056 Charging Module to charge the lipo battery safely.

The charging has also two solder pads with polarity marked on it.First tin the both terminal and apply a small amount of flux for better results.Now solder the battery wires with the charging Module, as shown in the image for your reference.

Step 5: Switch ConnectionI'm using mini 3 pin slide switch to turn on & turn off the LED.

Mini slide switch has 3 pins to connect the wires.First tin the two terminal of the slide switch one from middle & second one from any side you prefer.Now solder the wires to both pins of slide switch.Connect the battery wire on middle and led wire to side pin.

Step 6: Place ComponentsNow start to place all the components one by one in 3d Printed Case.

First place the charging Module in the case, make sure the charging pin is on the point of the hole.Now please the lipo battery in the case and fix it using double side tape.Now fix the slide switch to it's place and glue it using super glue.Now Close the enclosure properly using super glue.

Step 7: Project TestingNow our project is successful completed. Now plug the Micro USB to charging Module and charge the battery fully before use. And as you can see the light is too high.