Introduction: Hard Hat Speaker

this is a hard hat speaker where the speakers can be up or down depending on if you want others to be able to hear, or if you want it to be more like headphones.

Supplies

Materials:

Hard Hat $8.69

Filament

6/32 screws (8)

1" hinges $2.47

Power Supply- AC to DC $9

Female Barrel Jack Connector $.54

Battery Charging Board with Battery Protection BMS 5V Micro USB 1A 186 50 Charge Module $.35

Micro 4.2 Stereo Power Amplifier Board Audio Module 5VF 5W+5W $7.99

 Step up Converter DC Voltage Regulator Voltage $1.30

EEMB Lithium Polymer Battery 3.7V 1400mAh 103440 Lipo Rechargeable Battery Pack $5.99

Gikfun 4Ohm 5W Full Range Audio Speaker Stereo Woofer Loudspeaker for Arduino Replacement (Pack of 2pcs) EK1949 $12

22 Gauge Wire

Tools/Machines:

Ice pic

Drill (Drill Bits and Philips head bit)

3D Printer

Step 1: Sketch

Draw a rough isometric sketch of the final speaker

Step 2: Bread Board

use a bread board to make sure all the of the components for your speaker work

Step 3: Solidworks

design brackets in Solidworks to fit your hard hat

Step 4: 3D Print

Save Parts as STL files and 3D print two of both parts

Step 5: Drill Holes

Drill two holes in the back using an ice pic to make it easier to drill, one in the middle and one next to that for the on and off switch and the power jack. next drill two holes slightly behind the midpoint of the side of the hard hat for the wires to connect the speakers to the rest of the wiring.

Step 6: Connecting Speakers and Brackets to Hard Hat

2x

  1. Use 4 screws to connect your speakers to out portion of bracket
  2. connect both parts of brackets with the hinges and screw that come with it.
  3. thread speakers wires through from the first bracket through the hard hat.
  4. tape the inner bracket to the hard hat with strong and durable tape.

Step 7: Connect Wires

  1. start off by soldering as many wires as you can outside of the hard hat. ( All steps except connecting the speakers, the charging jack, and the on and off switch)
  2. put all wires inside hard hat above the point where your head rest and hot glue to top of hard hat.
  3. connect all the rest of the wires