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
