• The Problem/Role of jacket
    • The problem our project seeks to address is bicycle safety and increasing communication between cyclists and drivers.

-50,000 cyclist accidents occur annually in the US

-More than 700 of such accidents resulting in fatalities

What causes these accidents?

-Foggy visibility, unaware turning intentions, dark clothing, etc.

Who is involved?

-Pedestrians, bystanders, motorists, other cyclists, etc.

The solution

-Our jacket is a great remedy for the majority of these accidents because it increases communication between cyclists and their environment. The device features hands free turn signal and stop capability. Additionally, the device uses bright multi colored LED's for safety and awareness.

  • Ideology of the Jacket
  • Basic stats of the jacket
  • Possible Video/Slide Show


    For this project, you will need...

    1. LilyPad 328 Arduino Board (1)

    2. LilyPad Power Supply

    3. LilyPad FTDI

    4. 14 LilyPad LED's (Red, Yellow, or White)

    5. White Acrylic Plastic Sheet

    6. Soldering Iron

    7. Basic Construct Materials: electrical tape, solder, hot glue, insulated copper wire, etc.

      Step 2: PREPARATION

      Acrylic Cut-Outs(2)

      Cut two arrows from the white acrylic plastic with the pictured dimensions (Laser Cut Preferred). For convenience, you can find the illustrator file below. Be sure to save as an illustrator document!

      Acrylic Cut-Out Drilling

      Lay one arrow to the side for Step Five, do not touch this arrow until then! Keep the other in front of you, this is now your mounting board. Use a marker to trace the following holes before drilling. Drill the holes as pictured and as evenly spaced as possible.

      -Drill 14 holes for the 7 LED installations along each arrow point

      -Drill 22 holes for the LilyPad 328 arduino board in the upper-center portion of the acrylic arrow

      -Drill 4 holes for the LilyPad power supply

      Switch Creation

      -Cut four copper tape strips and fold them in a ring-like shape.

      -Cut two longer strips of insulated copper wire to the size of 1.5 times your arm length

      -Solder copper tape rings to one side of each copper wire


      Step 3: Wiring Procedure

      Basic Wiring:

      During this process,

      -Thread wire through each hole from the bottom of the mounting board

      -Solder wires to establish connections

      -Leave as little slack as possible when soldering wires

      -Use electrical tape to keep the wiring snug and organized

      Battery Wiring Procedure

      -Connect negative's to grounding rings

      -Connect positive to positive pin on Lilypad board

      LED Wiring Procedure

      Ground each led according to diagram above, solid copper wire should be used to make

      the grounding rings for the right and left side and copper wire should feed to Lilypad grounding

      pin. Refer to LED numbering diagram for LED numbers.

      Right arrow

      -Assign & connect LED 1 and 2 positives to LilyPad pin 3

      -Assign & connect LED 1 and 2 positives to LilyPad pin 4

      -Assign & connect LED 1 and 2 positives to LilyPad pin 5

      -Assign & connect LED 7 positive to LilyPad pin 6

      Left arrow:

      -Assign & connect LED 8 and 9 positives to LilyPad pins 17

      -Assign & connect LED 10 and 11 positives to LilyPad pins 15

      -Assign & connect LED 12 and 13 positives to LilyPad pins 13

      -Assign & connect LED 14 positive to LilyPad pin 12

      Switch Wiring Procedure

      Right Arrow Switch:

      -Connect one end to ground

      -Connect other end to digital pin 18 (analog a4)

      Left Arrow Switch:

      -Connect one end to ground

      -Connect other end to digital pin 2

      Step 4: Upload Code

      Upload the code below from "testcase.ino" into your LilyPad board through arduino.

      -Remember to save the file as .ino to make it readable!

      Step 5: Attatchement and Finalization

      Create clear acrylic cut-outs for weatherproofing

      -1" x 4" (x4)

      -1" x 1" (x4)

      -1" x 8.5" (x1)

      -1" x 8.5" (x1) --Cut two circular holes in center of the cut square for switch wires to pass through

      -Two transparent acrylic arrow cut outs, one with a hole big enough to let the battery through

      Connect the cut-outs

      -Place the newly made clear arrow cut out in front of you (the one without the battery hole)

      -Place the white acrylic cut-out (from step two) on top of the clear arrow

      -Place the mounting board on top of the white acrylic cut-out so that all wires are hidden from sight

      -Place the last clear arrow (with battery hole) cut-out on top of the mounting board

      -Use the clear acrylic cut-out squares to create walls around the device

      -Hot glue the edges of the clear acrylic cut-outs to create an enclosed wall.

      Finally, cut out a few additional clear acrylic pieces to cover the battery with hot glue. The device should be completely covered. Glue both drawstrings to the non-LED side of the enclosure in a loop fashion, making the device wearable with arm straps and complete.

      See it in action!

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        7 years ago on Introduction

        Very interesting idea! I wonder if this could be incorporated into an actual backpack or something... just thinking. :)

        I'm curious to see how you make the physical controls. Do you have any info covering that?


        Reply 7 years ago on Introduction

        The physical controls on the device were two sets of thumb and index contact plates which were soldered to the positive switch input pin and negative ground input (respectively) on the lilypad board. These contact plates allowed for instant and seamless communication between the turn signal and the controls due to the simplicity of the system. What we did was create a rings for the thumb and index fingers which we coated in copper tape to produce a more broad surface area for the contact plates, making them easier to activate for the user. If you would like I could share some images of the controls on the device itself.


        Reply 7 years ago on Introduction

        Yeah, that would be great to see!

        If you just added another step or two into the body of your instructable, I think a lot of people would appreciate seeing the details of how the controls were made.