Sewable Electronics - Make a Bracelet

A wearable is a piece of technology that you can wear.

A few years ago I was proposed to design a wearables workshop that should be cheap so it could be made massively and easy to be done with children.

There are a few wearables projects based on Lillypad and other electronics, but we decided to make it open-source and cheap to produce locally.

Step 1: Materials & Tools

You will need the following standard materials:

• some felt or any other tissue
• a standard LED (I use RGB blinking LEDs) that you should mark the negative leg (any marker pen will do) and then twist the two legs in a closed loop so you can sew each leg.
• 3V coin cell
• hooks & eyes clasp (on chrome finish because it must be electricity conductor).

And also some special ones like:

• Coin cell holder: we designed this 3D printable button: https://www.thingiverse.com/thing:1927411

• Conductive thread. This is not easy to source but we are using a thick thread similar to knitting thread.

The basic tools to use are:

• Scissors
• Needle
• Pliers

Step 2: Step 2: Cut the Felt to Size

Step 3: Step 3: Sew the Battery Holder

Step 4: Step 4: Sew on Half of the Switch

Step 5: Step 5: Sew the Positive Pole of the Battery Holder

Step 6: Step 6: Sew the LED

Step 7: Step 7: Sew the Negative Side of the LED and the Other Half of the Switch