1 old scarf
1 Lilypad Arduino
1 tilt switch
4 LEDs (3 white, 1 red)
cloth, a needle, twine and filament (electronic twine), cabels, a soldering bolt, soldering tin and press studs(24)
1 tiny box
colour, foam rubber, cardboard, halftransparent construction paper
First load your Arduino code on the Lilypad. Before continuing with the actual building process check the functionality of your code and electric circuit (for example by using crocodile clips/ breadboard).
Take the scarf and put it around your shoulders. Now mark the perfect position for the Lilypad. Make sure it’s not to loose in it’s position. Then you can sew the press studs on the scarf. Studs on both ends of the scarf are needed, so they can be buttoned together. Do this step on both sides.
The part of the scarf lying on your chest is, where you want to put the Lilypad. Afterwards you button up the scarf and on the outside part more press studs are necessary.
For the sewing we need the electric garn at the pins 5 and 6, and also at the + and – of the Lilypad. The other studs can be sewed with normal twine. It’s easier to sew both sides at the same time. And it is very important, that all studs are isolated from each other, especially those who are sewed with filament.
Now we can sew the piezo in the middle of the snaps. The piezo has to be placed on the top of the scarf, so the sound isn’t damped too much. You can shorten the cabels of the piezo before soldering the red cable to pin-6-stud and the black cabel to the ground-stud.
Test if everything is working.
Take the tilt switch and solder one short cable on the + pin and two short cables to the – pin of the tilt switch. Afterwards solder the first cable to the + stud and one cable of the pair to the pin-5-stud and the other one to a resistor. Finally solder the resistor to the ground-stud.
Test again if it’s working an how to place the tilt switch, so it will only give an alarm when sudden movement occurs. When it’s in place, sew securely on the scarf.
Now it’s time for our tiny box. Cut 4 even rectangles out of it, distributed over the side of the box. Feel free to paint the box in any colour of your choice.
Find your own symbols for “I need something”,”I have something”, “I’m lonely and want to talk” and “Emergency”(red LED). Take the half-transparent construction paper and cut a rectangle which is a bit wider than the cut-outs of the box. Divide it in four parts and paint one symbol in every area (in the middle of the area).
Then stick the half-transparent paper on the inside of the box.
For the next parts you need 5 long black cables (ca. 1,5 m), 4 short red cables, 4 short black cables, 4 LEDs, 4 buttons, 4 resistors, 4 foam rubber petals, 4 foam rubber circles and some nice fabric for the blossom.
Start by putting a button on a foam rubber petal, which will later be the fillig of our blossom leafs. Solder a short red cable to the + pin of the button and a long black cable on the – pin of the button. Afterwards solder a resistor at the end of the long black cable and the resistor on the + pin of a LED. Then solder a short black cable on the – pin of the LED. Repeat that with the other buttons and LEDs.
Now cut 10 leaf-shaped pieces out of your fabric and sew 2 together for 5 times, so you have 5 empty blossom leafs. It’s best to seew them together inside out because you need to stick the 4 foam rubber circles on your 4 petals with textile glue. Later the foam circles will be placed over your pushbuttons, serving as a larger area you can press.
Turn the cloth petals around so the foam rubber circles are inside. Push the rubber petals with the buttons into your sewn petals, so the buttons are located directly under the foam circle. Knot the loose end of the leaf with twine. Repeat this step with the 4 leftover leafs before you sew them around a pistill (you can make it with fabric or use a fancy button). Now we have the finished blossom.
Solder all red cables of the buttons together and then to the + snap. Solder all short black cables of the LEDs together and solder them to the remaining long black cable. Solder this black cable to the ground-snap.
Test if everything is working.
It’s time to cut a cardboard rectangle that’s tightly fitting into your box, so it won’t move around. After that cut holes for the LEDs in the cardboard so every LED is positioned under a symbol, the red LED is for the “Emergency”-Symbol. Put the LEDs in the cardboard and place it inside your box. Also, you need 3 cardboard rectangles as walls between the LEDs.
The last thing you need is a hole in the box for the cables. Now the box is finished. Test if everything is working.
Finally sew the blossom over the piezo and hide all cabels under it.