Step 1: Materials

Picture of Materials
The electronic components you will need are: 
  • X2 555 Chip (You can also use a 556 Chip but for sake of simplicity I will use two 555)
  • X1 1K resistor
  • X1 .01 uF ceramic capacitor
  • X1 .1 uF ceramic capacitor
  • X1 10 uF electrolytic capacitor
  • X1 Female stereo jack 6,3 mm
  • X1 DC female jack
  • X2 50K (or 500K but I will use 50K because it seems to me the correct stepped tone sound)
  • X1 Switch (any really)
  • X2 Knobs (optional)
  • X1 Prototype board for soldering (I bought the smallest and cheapest)
  • X1 Enclosure (optional, I used a plastic ipod touch one)
  • X2 8 pin sockets (optional)

Other things you'll find around the house:
  • Soldering iron
  • Screwdriver
  • Tweezers
  • Wire
  • Wire stripper