-47-
OBJECTIVE: To create bird sounds.
Turn on the switch (S1). The circuit makes a bird sound.
Bird Sounds
Project #447
OBJECTIVE: To create bird sounds.
Use the circuit in project 447. Replace the 100µF (C4) capacitor with the
10µF capacitor (C3), the tone should be much higher. Now use the
470µF capacitor (C5) and hear how low the tone gets.
Bird Sounds (II)
Project #448
OBJECTIVE: To create bird sounds.
Use the circuit in project 447. Connect the whistle chip (WC) across
points A & B and the sound changes.
Bird Sounds (III)
Project #449
OBJECTIVE: To create bird sounds.
Use the circuit in project 447. Connect the whistle chip (WC) across
points B & C.
Bird Sounds (IV)
Project #450
OBJECTIVE: To create bird sounds.
Use the circuit in project 447. Replace the 100kΩ resistor (R5) with the
photo resistor (RP). Wave your hand over the resistor and the sound
changes. With the photo resistor installed, redo projects 448 - 452.
Bird Sounds (V)
Project #451
OBJECTIVE: Show variations of project 447.
Connect the whistle chip (WC) across points C & D.
Touch-Control
Bird Sound
Project #452