LDK Experiment 1: Lighting Up a Basic Circuit
These are all of the parts you’ll need to complete this circuit. If you’re using the LilyPad Design Kit, you’ve already got them all.
You’ll also want to have scissors, fabric, an embroidery hoop, and possibly a needle threader.
Threading your needle
Select a needle to use for this project. The larger the needle, the easier it will be to thread, but the harder it will be to pull through a thick fabric. Balance the needs of your eyesight and hand steadiness with the heaviness of the fabric you’ll be using for this project. If threading a needle is difficult or frustrating for you, you may want to use a needle threader. These are inexpensive and available at any craft store that sells sewing supplies. Cut off a length of conductive thread roughly 2 feet long, and thread it through the needle. Pull it until your needle is in the middle of the length of thread, then pull the two ends together and tie them together into an overhand knot. You should now have a double length of thread about a foot long. In general, I recommend threading your needle with relatively short lengths of thread; try to avoid anything longer than two feet doubled over (four feet before doubling.) Conductive thread is more prone to knots and tangles than traditional thread, and a shorter length will help with that.
Preparing your fabric
For greatest ease, use an embroidery hoop. These are inexpensive and available at any craft store. The hoop will hold your fabric taut, which helps you to spot and repair potential problems early, as well as preventing the fabric from bunching or gathering while you sew.