Trellis sound box

This is a sound board project I'm designing for my daughter.

Wiring diagram

Parts List

Note that most of these parts are big packs parts (e.g. 100 piece packs) and theoretically some of it you may have already.

• Adafruit Trinket M0
  • https://www.adafruit.com/product/3500
  • 8.95
• Adafruit Trellis PCB
  • https://www.adafruit.com/product/1616
  • 9.95
• Adafruit Trellis Elastomer Button Keypad
  • https://www.adafruit.com/product/1611
  • 4.95
• 6 3mm square nuts
  • https://www.amazon.com/gp/product/B018JPZNS6/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1
  • 6.99 for a pack of 100
• 2 3mm x 12 mm machine screws
  • https://www.mcmaster.com/#catalog/124/3085/=1bxemok
  • 2.72 for a pack of 100
• 4 3mm x 8mm machine screws
  • https://www.mcmaster.com/#catalog/124/3085/=1bxenvz
  • 2.72 for a pack of 100
• 2 5 pin JST-XHP JST connectors with 2.54 mm female pin headers
  • https://www.amazon.com/gp/product/B01MCZE2HM/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1
  • 10 for a 460 piece kit
• 2 2 pin JST-XHP JST connectors with 2.54 mm female pin headers
  • https://www.amazon.com/gp/product/B01MCZE2HM/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1
  • You can get them from the same kit above
• JST crimpers that work for 2.54 pins
  • https://www.amazon.com/gp/product/B00OMM4YUY/ref=oh_aui_detailpage_o02_s01?ie=UTF8&psc=1
  • 22
• 22 gauge stranded cable
  • https://www.amazon.com/gp/product/B00B4ZQ3L0/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1
  • 20 for a box of assorted colors
• AAA battery pack for 3 batteries
  • https://www.amazon.com/gp/product/B01GVDGA5S/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1
  • 7.49 for a pack of 6
• 28 mm 1watt 8 ohm speakers
  • https://www.amazon.com/gp/product/B019JMV0JY/ref=oh_aui_detailpage_o05_s00?ie=UTF8&psc=1
  • 8.49 for a pack of 4
• LM2577 Mico USB DC Voltage Regulator Step Up Boost Converter Power Supply
  • https://www.amazon.com/gp/product/B075R8H1K9/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1
  • 7.99 for a pack of 10
• HELLOYEE 10K Ohm Breadboard Trim Potentiometer With Knob
  • https://www.amazon.com/gp/product/B01IK6GT1E/ref=oh_aui_detailpage_o07_s00?ie=UTF8&psc=1
  • 9.99 for a pack of 10
• Teenitor 100 Pack SS-12D00G3 High Knob 3P 2 Position 1P2T SPDT Vertical Slide Switch
  • https://www.amazon.com/gp/product/B01MXIVDCT/ref=oh_aui_detailpage_o03_s00?ie=UTF8&psc=1
  • 8 for a pack of 100
• 16 3mm LEDs
  • https://www.amazon.com/gp/product/B01N0XRH5R/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1
  • 8.49 for a pack of 160
• Paper perf board (optional)
  • https://www.amazon.com/gp/product/B072Q1H6GX/ref=oh_aui_detailpage_o05_s01?ie=UTF8&psc=1
  • 9.50 for a pack of 20
• 2.5mm x 8mm self tapping screws
  • https://www.amazon.com/gp/product/B071DWY1Z5/ref=oh_aui_detailpage_o09_s00?ie=UTF8&psc=1
  • 4.99 for a pack of 50
• 3 Tripple A batteries
• Adafruit perma-proto half sized board
  • https://www.adafruit.com/product/571
  • 12.50