HiFiBerry 

Creator: Andrey Gorkovenko

Download the files:

• childbox

This project requires following hardware:

• Raspberry Pi Zero W
• Hifiberry MiniAMP
• 2x 2″ (53mm) full range speaker
• 2x 45mm vibration membrane
•  >10W USB power supply
•  ~30cm copper audio wiresAdditionally some modifications are to be made with Hifiberry MiniAMP board*:
  *this voids warranty, but it is acceptable sacrifice for compactness.
• The capacitor has to be unsoldered from bottom side and soldered back on bottom side (note polarity)
• Wire connectors have to be unsoldered. Audio wires have to be soldered instead (also from bottom side)
•  Optional. Use hot glue in the soldering place to protect wires from breakage.Assembling:
• Fasten membranes in place with contact adhesive.
•  Screw speakers in place using 4x {M3 screw + nut + washer} per speaker. Speaker’s connectors have to be at bottom side.
• Connect Raspberry Pi Zero with Hifiberry MiniAMP and screw them in place. Raspberry’s SD card should also be at bottom side.
• Solder audio wires to speakers (note polarity)
• Optional. Cover body using any decorative material, f.e. acoustic fabric. Use PVA glue or contact adhesive for that purpose.
• Optional. Fill speaker’s cameras with any acoustic absorber material (this noticeably improves sound quality)
• Fasten top cover in place using contact adhesive or hot glue.
• Screw bottom cover using 7 flat-head screws (10-12mm length, 2.5 – 3mm diameter).
• Fasten back ports cover using hot glue or contact adhesive.
• Glue silicone pads (legs) on bottom cover.