Parts & Tools

This project only requires common tools and materials. You might need to make changes or additions depending on your specific installation.

Parts & Materials

  • A drawer or door (Preferably wood, without a latch.)
  • Adafruit Trinket 5V.
  • Lock-style solenoid. 12V.
  • Piezo Buzzer. 0.5" - 1" (12mm-24mm) diameter.
  • TIP120 Darlington Transistor.
  • 6mm Tactile switch
  • 1MΩ 1/4W resistor.
  • 10KΩ 1/4W resistor.
  • 2.2KΩ 1/4W resistor.
  • 12V 1A power supply. (With 2.1mm center positive power plug.)
  • or, a 8xAA battery pack (w/2.1mm plug) - will last about a week powering the circuit
  • 2.1 mm barrel jack.
  • 1N4001 diode
  • Perfboard.
  • Hookup Wire.
  • (6x) #4 3/8" round head wood screws. (Length depends on your installation. I used 2 1/2" and (4) 3/4" screws for the demonstration.)
  • Thin scrap wood. (Again, this depends on your installation. I used 6" of 1/2" square dowel and 2" of 1/4" square dowel for the demonstration.)


Tools

  • Safety glasses
  • Soldering iron & solder
  • Wire cutters
  • Wire strippers
  • Drill and assorted drill bits
  • Pliers
  • Screw driver
  • Ruler

 

This guide was first published on Oct 31, 2013. It was last updated on Oct 15, 2018. This page (Parts & Tools) was last updated on Oct 16, 2016.