In this tutorial we will show you how to make a Holiday Greeting card with LEDs! To do this we will use some Bare Paint
, a battery, and some surface mount LEDs.
Step 1: Materials
A4 Coloured Paper
Surface Mount LEDs US: Digi-Key
3V Coin Cell Battery US: Digi-Key
Step 2: Download and Print your Templates
Download the template for the card. In this tutorial we will be painting our circuit with a brush, however we have provided a template for you to silkscreen the cards as well if you like. For this tutorial you will need to print pages 1 & 3.
*Use page 2 if you're going to screen print the cards.
Print page 3 of the template on a colored piece of paper. This will be the main body of the card. Once printed just fold it in four, making sure the text is on the inside as shown.
Step 3: Cut out your image
Select the card you want to make, and cut it out. In this tutorial we will be making the Christmas Tree.
Step 4: Trace the Circuit with Bare Paint
Draw over the dashed lines with your Bare Paint to complete the conductive circuit. Put this aside and wait for it to dry.
When attaching the LED, make sure there is a gap for it to sit. Don't paint all the way through as this will cause a short circuit! Also, make sure to note the polarity of your LED so that you put the battery in the right direction. In this case I have put my positive (+) legs facing left.