CIRCUITRY KEYBOARD
ELECTRONIC CIRCUIT EXPERIMENT KIT
Three Switches, Three LEDs, Different Actions
24-3
12
Changing Current Direction 1
13
Changing Current Direction 2
14
Turn on the Main Switch. Turn the Variable Resister knob clockwise
until it stops. The Blue LED will illuminate and the Yellow will be
dark. Turning the knob the opposite direction will reverse this.
While this produces similar results as Circuit 13, above, it uses
Melody - Manual Control
15
8
7
12
11
10
9
3
4
23
24
22
21
25
26
7
8
11
12
3
4
27
28
29
23
24
14
13
100Ω
9
10
7
8
3
4
23
24
27 28 29
3
4
23
24
1
2
21
22
30
31
32
33
34
35
After turning on the Main Switch, pressing the Push Switch,
activating the Reed Switch, or doing both at the same time will
cause one or more LEDs to light up.
Slide the Main Switch to “on”. Turn the Variable Resister knob
clockwise until it stops. The Blue LED will get brighter while the
Green LED will dim. Turning the knob in the other direction will
brighten the Green LED and dim the Blue LED. This shows the
Flip on the Main Switch. Press the Push Switch to play music.
Pushing the switch will play the next song stored in the memory.
