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4. Drill holes for the LEDs at the locations you marked in Step 3.


5. With a permanent marker or paint brush, draw the musical notes and
   staff on the wooden box.


6. Insert LEDs in the drilled holes.

The box at this stage is shown in Figure 5-15.

See Figure 5-15 for help with this if you’re not musical!

R10 from Pin 1 of IC2 to Pin 2 of IC 2

R5 from Pin 1 of IC1 to Pin 2 of IC 1

R2 from C1 to Pin 2 of IC 1

R1 from C1 to +V bus

R9 from Pin 2 of IC2 to ground bus

R8 from C3 to ground bus

R6 from Pin 1 of IC1 to ground bus

R3 from Pin 3 of IC1 to +V bus

R4 from Pin 3 of IC 1

to ground bus

Figure 5-12:

Insert more

resistors

onto the

breadboard.

102 Part II: Sounding Off!