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