Materials List

Keep in mind, I purchased many of the felt materials pre-made, but you could definitely make them yourself and it would probably be cheaper. :)

“Soft” Materials
2 12”x18” Gray Easy Felt $0.79/each
1 9”x12” Summer Felt Rectangle $0.50
1 9”x12” Glimmer White Felt Rectangle $0.25
1 apple tree $4.50
1 package of felt flowers $4.50
1 package of felt leaves $4.50
1 spool conductive thread 234/34 4 ply $34.95
1 spool conductive thread  117/17 2 ply  $39.95  Tip:  You can purchase this spool only. I had access to both the 4 and 2 ply. I prefer the 4 ply for sewing the stitches, but the 2ply will work. You will need the 2ply to make your stroke sensor, so if you can only purchase one spool, make it the 2 ply.
1 package of felt star stickers (purchased at Hobby Lobby)
1 piece of neoprene (it should be the kind you would make wetsuit out of, it should be soft and spongy)
3 packages of different colored star buttons (purchased at Hobby Lobby)
1 package of Velcro dots (purchased at Hobby Lobby)
1 bottle of fabric glue (purchased at Hobby Lobby)
1 package of iron-on adhesive (purchased at Hobby Lobby)
Stretch conductive fabric OR aluminum foil

“Hard” Materials
1 LilyPad SimpleSnap Protoboard $29.95
1 LilyPad Arduino SimpleSnap $9.95
1 LilyPad Twinkle $6.95
1 LilyPad Tiny $6.95
1 LilyPad Buzzer $7.95
2 LilyPad Coin Cell Battery Holder – Switched $5.95/each
1 LilyPad Coin Cell Battery Holder $4.95
Lily Pad LEDs. I used red, blue, yellow, pink, and green. $4.95 for each package. You will get 5 lights per package.
1 LilyPad FTDI board $14.95
1 craft knife
1 needle (a thicker needle works best)
1 pair of scissors

Step 1: Glowing Apple Tree

Materials needed (from earlier list)
5 red LEDs
Coin Cell Battery holder  -- Switched.
Felt apple tree
Thread and needle
Fabric glue
Iron-on adhesive 
1 12"x18" Gray Easy Felt
1 coin battery

I chose to have my "hardware" sewn on to the back of the felt board, so they wouldn't be visible. However, your lights should be sewn on the front of the felt board.

I can't say this enough: make sure you draw out your circuits and make sure your orientation is correct. Your negative and positive lines can never cross, or you'll short out your circuit. 

I've included a sketch of how the circuits would look from the back. All of the negative pins on the LEDs are facing up. 

All of the negative pins should be sewn in parallel.  It saves time. You will need quite a long piece of thread to do this step.

You want to use the "switched" battery holder, so you can turn the lights on and off. If you don't use a battery holder with an on/off switch, the LilyTiny will run until the battery is dead.

1) Iron on the adhesive to your tree. When the tree is cool, iron on the  tree to your felt board. Leave the apples for later.

2) Decide how you want your lights, LilyTiny, and battery holder to be arranged. You also need to decide how you want the light pattern to look. The LilyTiny has 4 pints (0-3) with different light functions. I chose to sew all of the lights to pin 2, but you can sew them to different pins and create different light effects. However, that will take up more space, because you won't be able to sew your positive pins in parallel. 

3) Based off your decision in Step 2, draw your circuit diagram--check it twice! Again, your negative and positive lines can not cross. 

4) Begin sewing on your LEDs. I started with the negative line first. Sew all negative LEDs in parallel. Each LED pin (hole) should have the thread going through it at least three times. This improves the flow of the current. 

5) Once you have all the negative LEDS sewn, place your Lily Tiny on the back of the felt board, positioned about halfway down the trunk. 

6) Sew from the last LED negative pin to the negative pin on the LilyTiny. Remember--sew through the pin three times. 

7) Continue sewing to the negative pins on the battery holder. Knot off your thread. 

8) Now, you will want to sew the positive pins of the LEDs. Thread your needle and begin sewing your positive pins together (again, the thread should be fairly long). Remember to follow your circuit diagram. 

9) Once all of the positive pins are sewn, continue to the LilyTiny. You will want to sew to the number pin you decided on. I chose 2.

10) After you have sewn through your numbered pin, continue sewing to the positive pins on the battery holder. Knot off your thread.

11) I like to dab a tiny bit of fabric glue on my knots, to keep them from fraying.

12) Glue your apples on to the three, over your lights.

13) Place a battery in the holder, and switch it to on. Now, you have a glowing apple tree!

Glowing apple tree
Circuit diagram
Close up of a sewn LED
View of the sewn LilyTiny and the battery holder

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