How to make a LED blinky Guitar Keychain

 Guitar Key chain

Make a cool guitar key-chain which blinks when plugged to a USB or OTG (On The Go) supported phone. I have used a White LED here but you can personalize it with any color.

Difficulty level : Easy

Things you will need :

1. Printed Circuit Board (PCB)
2. 1k Ohm resistor X 2
3. LED (Any color)
4. Hot glue gun
5. Acrylic colors
6. IC 555
7. 22uF electrolytic capacitor
8. Small piece of wires
9. Sand paper

Circuit Diagram : 

#Steps :

Step 1: Cut a guitar using card paper of your desired shape and size. Use this as a stencil to draw on the PCB.

Step 2 : Draw the guitars on a PCB (Make sure there is enough space for the circuit to fit in).

Step 3 : Cut the guitar shape using a hack-saw. Polish the copper side of the PCB with a sand paper till it becomes shiny.

Step 4 : Draw the circuit on the shiny side as shown in the diagram using a permanent marker.

Step 5 : Etch the PCB till all the copper fades out. Rinse the guitar with water. Remove the marker ink with acetone or nail polish remover.

Step 6 : Drill holes for the components.

Step 7 : Place the components in their respective places and solder them.

Step 8 : Paint the solder side with Texture white and leave to dry.

Step 9 : Scratch the surface a little so that the hot glue adheres properly and then cover the whole component side with hot glue. Make sure it is smooth and looks glossy.

Step 10 : Paint the guitar with Acrylic colors of your choice and let it dry.

Final Product

Just plug it in USB port and watch it GLOW!! Attach a chain to tie your keys.

Connected to USB port.

Connected via OTG.

Connected via OTG.

Please SHARE if you like it. Comment if you have any doubts. :)

Please like us on Facebook at www.facebook.com/ArtronicsBlog

How to make a LED heart minion necklace

 Minion Heart Necklace

Yet another unique gift for your special someone. What makes it unique is, it glows and blows minds!
Well technically, the LED's in the necklace glow when you press the pendant and also when you thread it to a metal chain. Here are the steps to make it.

 Here's a video of how it looks when its done: http://youtu.be/jx08CxBUhYQ

Prerequisite : Basic soldering knowledge.

Difficulty level : Medium

Things you will need :
1. 2x RGB LED's
2. 2x 3V Battery
3. Soldering iron and wire
4. Hot glue gun
5. Reset switch
6. Conducting wires
7. Texture white
8. Acrylic colors

#Steps:

Step 1: Take a general purpose PCB and cut two heart shaped parts.

Step 2: Take one part and design the circuit as shown in the diagram. Solder the LEDs in series with the battery (6V). Connect a switch between the terminals.  Make contact on the PCB for the negative terminal of the battery using small wire.

Step 3: Extend two terminals out of the PCB (to attach the necklace later) and solder the terminals to the circuit.

Step 4: Take the other part of PCB and make contact for the positive terminal of the battery.

Step 5: Place batteries on the terminals with the right polarities. Check and Make sure the LEDs glow before going further to make sure the circuit works.

Step 6: Join the two parts and align them properly. Use a pair of clippers to hold them firm. Use a hot glue gun to bind the two pieces together and seal the circuit. Make sure you leave enough space not too much not too less so that the switch works effortlessly after you hot glued it.

Step 7: Use a hot solder iron to smooth out and make the surface of the hot glue even and shiny. Apply a coat of Texture white to make the surface smooth and uniform. Let it dry.

Step 8: Draw a minion of your choice on the plain side with a pencil and use acrylic colors to paint it.

Step 9 : Apply a coat of varnish and let it dry and you are done!! Watch them glow!! ^_^

Thank you. Please COMMENT and SHARE if you like it :)

LIKE us on facebook www.facebook.com/ArtronicsBlog