
Low-profile CMT-1203-SMT piezo buzzer expansion deck for Crazyflie 2.0, with automatic deck detection via 1-wire memory. Plays pre-programmed melodies or custom tones from firmware. Weight 1.8 g, 25×27×4 mm.

Analog · I2S · PWM · 3.3 – 5 V · Bare
Adafruit product 1536 is a breadboard-friendly active buzzer: apply 3–5 V DC and it produces a loud fixed tone around 2 kHz; the frequenc…
Passive speakers from 1 W to 20 W (4–8 Ω), piezo buzzers active and passive, bone-conductor and surface transducers, and a BOSON buzzer module — all need a matching driver circuit or amplifier.
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20W 4 Ohm Full Range Speaker - XS-GTF1027 visual preview20W 4 Ohm Full Range Speaker - XS-GTF1027
8Ω 5W Speaker visual preview8Ω 5W Speaker
Adafruit STEMMA Speaker visual previewAdafruit STEMMA Speaker
Bone Conductor Transducer with Wires - 8 Ohm 1 Watt visual previewBone Conductor Transducer with Wires - 8 Ohm 1 Watt
BOSON: Buzzer Module visual previewBOSON: Buzzer Module
Buzzer 5V - Breadboard friendly visual previewBuzzer 5V - Breadboard friendly
Buzzer beepboard visual previewBuzzer beepboard
Gravity: Digital Buzzer for Arduino / ESP32 / micro:bit / Raspberry Pi visual previewGravity: Digital Buzzer for Arduino / ESP32 / micro:bit / Raspberry Pi
Large Surface Transducer with Wires - 4 Ohm 5 Watt visual previewLarge Surface Transducer with Wires - 4 Ohm 5 Watt
LilyPad Buzzer visual previewLilyPad Buzzer
ASR Board for Arduino visual previewAdafruit Audio FX boards and WAV Trigger for standalone playback, DFPlayer Pro and Gravity MP3 for MCU-scripted audio, EasyVR for speech recognition, Fermion/Gravity voice recorders, and Pi I2S DAC/codec boards.
Audio · Audio boards · 51 parts
6+1 Microphone Array visual previewMAX4466 and MAX9814 electret preamp breakouts for analog audio, I2S MEMS mics (ICS-43434, SPH0645LM4H, INMP441) for digital audio, PDM breakouts, ReSpeaker arrays for far-field pickup, and an LM386 sound detector.
Audio · Microphones · 17 parts
3W Mini Audio Stereo Amplifier (W2) visual previewMAX98357A and MAX98357 I2S class-D amps, PAM8403 and TPA2012 analog stereo amps, MAX9744 20W stereo amp, LM386 and PAM8302 mono amps, and discrete op-amp packs for signal-level work.
Audio · Audio amplifiers · 15 parts
1.75mm PLA (1kg) - Black visual previewDFRobot 1.75 mm PLA in 1 kg spools makes up the bulk of the group, in over 15 colors. Specialty options include PVA in both diameters, NinjaFlex flexible filament, Proto-Pasta conductive PLA, and wood-fill. OverLord printer spares and OverLord printers round out the hardware side.
Tools & prototyping · 3D printing · 53 parts