Final — Update

I’m considering making the LCD show sound waves of the songs playing to further demonstrate how similar two sets of songs at a time are. After presenting about my idea in ICM it became clear to me that not everyone hears music the way I do, and this could be a great opportunity to let people hear music through my ears.

As Tom suggested, here are two system diagrams to think about:

One thing I need to figure out is whether or not I need a headphone jack that can run through the cigar box or whether I should just use a headphone jack from an iPhone or laptop..

After user testing I realized that my BOM needs to be updated:

ITEM QTY. COST DESC.
Cigar Box 1 $0 Brown 10 1/2″ x 7″ x 2 1/4″ rectangular cigar box with clasp
ON/OFF Button 1 $4.95 Rugged Metal On/Off Switch with White LED Ring – 16mm
Color LCD 1 $24.95 2.2″ 18-bit color TFT LCD Display with microDS card breakout
Potentiometer (fader) 1 $2.95 Slide Potentiometer 10K Ohm 0.5W, 3 1/2″ x 1 1/2″
Play, Back & Next Buttons 3 $1.50 Momentary Pushbutton Switch – 12mm Square
Fader Knob 1 $0.95 Slide Potentiometer Knob, Black
TOTAL —– $35.30

Whether or not I’ll be needing that on/off button will be determined once I really get into fabricating and putting together the whole project. I happened to have the button already so it’s no loss if I don’t end up using it.

I’m considering ditching the fader and going with a knob and three buttons (rewind to beginning, play, and next set). The reason for going with a metal knob instead is because I already have a variable potentiometer and I’ve found it hard to find a fader with an appropriate length and attractive knob.

Instead of trying to buy everything from Sparkfun and Adafruit I’m going to head to Tinkersphere to try and avoid shipping costs. (I’ll update my BOM once I go there later today). Here’s what I’ll need to find:

  • Headphone jack
  • 3 Push Button Caps
  • Potentiometer Cap
  • Color LCD (TFT Arduino compatible)
  • 3 Push Buttons

……………………

Updated BOM:

ITEM QTY. COST DESC.
Cigar Box 1 $0 Brown 10 1/2″ x 7″ x 2 1/4″ rectangular cigar box with clasp
ON/OFF Button 1 $4.95 Rugged Metal On/Off Switch with White LED Ring – 16mm
LCD 1 $15.99 2.2″ color TFT LCD Display with microDS card breakout
Potentiometer (fader) 1 $2.95 Slide Potentiometer 10K Ohm 0.5W, 3 1/2″ x 1 1/2″
Play, Back & Next Buttons 3 $1.50 Momentary Pushbutton Switch – 12mm Square
Fader Knob 1 $0.95 Slide Potentiometer Knob, Black
TOTAL —– $26.34

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