May 20, 2014

Day & Night Sampler - a raspberry pi mpd mini boombox Part 1: Parts List

Bill of Materials/Parts List:
  • raspberry pi; I got mine from, $35 plus shipping
  • two small speakers [*1] mcmelectronics has these for $10.99 each plus ship
  • Patriot WiFi USB dongle, model PCWUSB1150, on sale at Fry's, $7.99; 
  • adafruit stereo 3.7W Class D Audio Amplifier, part ID 987  $14.95
  • adafruit perma-prototype board, part ID 723 $5.95
  • adafruit Vacuum Fluorescent  Display 20 Char x 2 Lines, part ID 347 , $29.95 (Since Discontinued!)
  • adafruit 5V/2A power supply, part ID 276  $9.95
  • adafruit panel mount 2.1 mm DC barrel jack, part ID 610  $2.95
  • Syba (C-Media) USB sound adapter, available at $7.99
  • 3.5mm headphone extension, male-to-male, under $5 on ebay
  • USB Short Extension cable, Type A Male to Female, about $3-5 from ebay; use with the C-Media USB sound adapter
  • adafruit 8 Bit (TTL) Logic Level Converter for interfacing the VFD to the pi, product ID 735, $1.50
  • adafruit mini remote control, product ID 389 , $5; Or, any surplus remote control you have
  • IR Sensor, TSOP38238, available at adafruit, product ID 157 , $1.95; also Mouser and others
  • SDHC Card, available at adafruit and others, adafruit part ID 102, $7.95
  • Lighted push button switch, about $4.00
  • Misc jumpers and wire
  • An enclosure of some kind, made or found. I used the tin described above. Wood box is a better choice.
  • "Spoon Handle", a carrying handle for the enclosure, about $4.95 at Ace Hardware
  • Misc 4/40 screws, 8/32 screws, brass standoffs and brass acorn nuts, also from Ace, under $5
 Note [*1]: The speaker sizes I used were predetermined by the tin I was using, small tin, small speakers. I used 2 inch speakers, and they are pleasant sounding but have little bass. Frequency range 150Hz to 20KHz. If you want to build a project like this with better sound, get speakers that are full-range, probably about 4" or more, preferably shielded.

The physical build, fitting all the hardware into the enclosure, will be discussed later. We'll start with making the software work.

Continue on to Part 2, Software Installation

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