Pololu item #: 1262
Price: $2.99

50mm Speaker: 8 Ohm, 1 W

This high-quality, 50mm speaker can generate sound louder than our smaller 30mm speaker and has a flatter frequency response curve.

Pololu item #: 1261
Price: $1.99

30mm Speaker: 100 Ohm, 0.15 W

This automotive-quality 0.15W speaker is a compact way to add sound to your project. The 100Ω impedance makes it easy to drive this straight from a microcontroller I/O pin.

Pololu item #: 1260
Price: $0.99

This piezo sounder is an inexpensive way to add sound to your project. The wide operating voltage of 1 – 30 V and low current draw (5 mA at 9 V) make it easy to control this buzzer directly from a microcontroller I/O line.

Pololu item #: 1621
Price: $9.95

MEMS Microphone Breakout Board

Ready to add sound detection to your next project? This small breakout board from SparkFun couples a tiny microelectromechanical system (MEMS) microphone with a 100x gain external amplifying circuit, converting sound into analog voltage signals that can be measured by a microcontroller’s analog-to-digital converter (ADC). The unit comes fully assembled as shown and works from 1.5 to 3.6 V.

Pololu item #: 1620
Price: $7.95

Electret Microphone Breakout Board

Ready to add sound detection to your next project? This compact breakout board from SparkFun couples a small electret microphone with a 100x opamp, converting sound into amplified analog voltages that can be measured by a microcontroller’s analog-to-digital converter (ADC). The unit comes fully assembled as shown and works from 2.7 to 5.5 V.

New!
Pololu item #: 1619
Price: $14.95

ISD1932 Voice Recorder Carrier

This breakout board from Sparkfun is a carrier for the ISD1932 multiple-message record/playback IC. It can record up to 64 seconds of voice messages with two different recording trigger modes. The chip has a flexible supply voltage of 2.4 to 5 VDC and breaks out all of the ISD1932’s pins to 0.1"-spaced headers.