1 |
× |
Atmel ATtiny13V
8-bit microcontroller in 8-pin package
|
4 |
× |
2N7000
N-channel MOSFET
|
4 |
× |
Piezoelectric tweeter
Piezoelectric tweeter with exponential horn
|
4 |
× |
Resistor
Resistor across piezoelectric tweeter terminals
|
1 |
× |
78L05
5V fixed three-terminal voltage regulator
|
1 |
× |
SPST toggle switch
Power switch
|
2 |
× |
Capacitor
Bypass capacitors for 78L05 regulator input and output
|
1 |
× |
Battery
Battery of voltage suitable for input to 78L05 regulator
|
1 |
× |
Battery Holder
Battery holder or clip suitable for battery
|
1 |
× |
Enclosure
Enclosure large enough to hold components
|
1 |
× |
Strap
Strap for attaching enclosure to user (e.g., waistband)
|