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Electromagnetic Components – Sound and Motion

Bring the right beat to your projects! With our electromagnetic components, you add sound and motion – perfect for creative ideas and dynamic solutions that excite!
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Loudspeaker
Loudspeaker
Microphones
Microphones
Motors & Servos
Motors & Servos
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Pumps
Closer & Opener
Closer & Opener
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Thermal Printers

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221 Products
Electromagnetic lock 12V - lock latch Electromagnetic lock 12V - lock latch
Frei
LY-03
Electromagnetic lock 12V - lock latch

CHF 6.70

Available · 25 piece · 2-5 Tage

Waveshare 2.3kg.cm Serial bus servo SC09, 300° angle of rotation, two-way feedback, 6V Waveshare 2.3kg.cm Serial bus servo SC09, 300° angle of rotation, two-way feedback, 6V
Waveshare
WS-24440
Waveshare 2.3kg.cm Serial bus servo SC09, 300° angle of rotation, two-way feedback, 6V

CHF 12.25

Available · 84 piece · 2-5 Tage

Waveshare, Serial Bus Servo, ST3020, 25kg/cm, 360 degree magnetic encoder, 6-14V Waveshare, Serial Bus Servo, ST3020, 25kg/cm, 360 degree magnetic encoder, 6-14V
Waveshare
WS-24703
Waveshare, Serial Bus Servo, ST3020, 25kg/cm, 360 degree magnetic encoder, 6-14V

CHF 25.80

Available · 1 piece · 2-5 Tage

CD DVD spindle motor CD DVD spindle motor
Adafruit
ADA3882
CD DVD spindle motor

CHF 1.95

Available · 35 piece · 2-5 Tage

DFRobot Voice Prompt Module, voice prompt module with integrated MP3/WAV player, loudspeaker, 1W DFRobot Voice Prompt Module, voice prompt module with integrated MP3/WAV player, loudspeaker, 1W
DFRobot
DFR1173
DFRobot Voice Prompt Module, voice prompt module with integrated MP3/WAV player, loudspeaker, 1W

CHF 7.70

Available · 7 piece · 2-5 Tage

Adafruit Mini "Pager" geared motor with return spring Adafruit Mini "Pager" geared motor with return spring
Adafruit
ADA3871
Adafruit Mini "Pager" geared motor with return spring

CHF 1.95

Available · 10 piece · 2-5 Tage

New
Waveshare metal series bus servo ST3025, 40kg.cm torque, 360° magnetic encoder, brushless, 12V Waveshare metal series bus servo ST3025, 40kg.cm torque, 360° magnetic encoder, brushless, 12V
Waveshare
WS-24702
Waveshare metal series bus servo ST3025, 40kg.cm torque, 360° magnetic encoder, brushless, 12V

CHF 72.60

Available · 16 piece · 2-5 Tage

Adafruit Mini Oval speaker with cable, 8 Ohm, 1 Watt Adafruit Mini Oval speaker with cable, 8 Ohm, 1 Watt
Adafruit
ADA4227
Adafruit Mini Oval speaker with cable, 8 Ohm, 1 Watt

CHF 1.95

Available · 44 piece · 2-5 Tage

Adafruit stepper motor, reduction stepper motor, 32 steps, 1/16 gear, 5V-12VDC Adafruit stepper motor, reduction stepper motor, 32 steps, 1/16 gear, 5V-12VDC
Adafruit
ADA918
Adafruit stepper motor, reduction stepper motor, 32 steps, 1/16 gear, 5V-12VDC

CHF 4.45

Available · 5 piece · 2-5 Tage

PUI Audio Microphone, 2.2kOhm, ø9.7mm
PUI Audio
AOM6738PR
PUI Audio Microphone, 2.2kOhm, ø9.7mm

CHF 1.40

Available · 24 piece · 2-5 Tage

DFRobot Micro Metal Geared Motor with Encoder, 105RPM, 150:1, 1kgcm, 60mA no-load current, 6V DFRobot Micro Metal Geared Motor with Encoder, 105RPM, 150:1, 1kgcm, 60mA no-load current, 6V
DFRobot
FIT0484
DFRobot Micro Metal Geared Motor with Encoder, 105RPM, 150:1, 1kgcm, 60mA no-load current, 6V

CHF 11.90

Available · 3 piece · 2-5 Tage

DFRobot metal DC geared motor, 50RPM, 100:1, 26kgcm torque, 170mA no-load current, 12V DFRobot metal DC geared motor, 50RPM, 100:1, 26kgcm torque, 170mA no-load current, 12V
DFRobot
FIT0492-A
DFRobot metal DC geared motor, 50RPM, 100:1, 26kgcm torque, 170mA no-load current, 12V

CHF 11.90

Available · 9 piece · 2-5 Tage

Small solenoid coil with interlock - 12VDC @ 350mAh with 2-pin JST Small solenoid coil with interlock - 12VDC @ 350mAh with 2-pin JST
Adafruit
ADA5065
Small solenoid coil with interlock - 12VDC @ 350mAh with 2-pin JST

CHF 7.50

Available · 8 piece · 2-5 Tage

DFRobot Micro Metal Gear Motor with Connector, 440RPM, 50:1, 0.39kgcm, 30mA no-load current, 6V DFRobot Micro Metal Gear Motor with Connector, 440RPM, 50:1, 0.39kgcm, 30mA no-load current, 6V
DFRobot
FIT0468
DFRobot Micro Metal Gear Motor with Connector, 440RPM, 50:1, 0.39kgcm, 30mA no-load current, 6V

CHF 11.90

Available · 5 piece · 2-5 Tage

Pololu 100:1 HP 6V micro-metal geared motor with extended motor shaft Pololu 100:1 HP 6V micro-metal geared motor with extended motor shaft
Pololu
POL2214
Pololu 100:1 HP 6V micro-metal geared motor with extended motor shaft

CHF 22.65

Available · 5 piece · 2-5 Tage

Makeblock mBuild servo driver, servo control, motor control, up to 1 A
Makeblock
MKB-P3020006
Makeblock mBuild servo driver, servo control, motor control, up to 1 A

CHF 8.90

Available · 50 piece · 2-5 Tage

Pololu metal geared motor 100:1, 100 rpm, 34 kg/cm, 37x57 mm, helical gearing, 12V Pololu metal geared motor 100:1, 100 rpm, 34 kg/cm, 37x57 mm, helical gearing, 12V
Pololu
POL4745
Pololu metal geared motor 100:1, 100 rpm, 34 kg/cm, 37x57 mm, helical gearing, 12V

CHF 40.85

Available · 3 piece · 2-5 Tage

Stepper motor, NEMA 17, 68 oz.in, 400 steps/revolution Stepper motor, NEMA 17, 68 oz.in, 400 steps/revolution
SparkFun
ROB-10846
Stepper motor, NEMA 17, 68 oz.in, 400 steps/revolution

CHF 31.70

Available · 2 piece · 2-5 Tage

Mini universal speaker, Mylar, 0.5W, 8Ω, 86dB, Ø57x12.5mm Mini universal speaker, Mylar, 0.5W, 8Ω, 86dB, Ø57x12.5mm
LOUDITY
LD-SP-5708-A
Mini universal speaker, Mylar, 0.5W, 8Ω, 86dB, Ø57x12.5mm

CHF 3.10

Available · 22 piece · 2-5 Tage

Pololu 75:1 micro metal geared motor HP 6V with extended motor shaft Pololu 75:1 micro metal geared motor HP 6V with extended motor shaft
Pololu
POL2215
Pololu 75:1 micro metal geared motor HP 6V with extended motor shaft

CHF 22.65

Available · 6 piece · 2-5 Tage

Whadda tap 8 mm inlet-outlet, max. 0.8 MPa, response time 0.15-0.3 seconds, 12 VDC Whadda tap 8 mm inlet-outlet, max. 0.8 MPa, response time 0.15-0.3 seconds, 12 VDC
Whadda
VL-WPM422
Whadda tap 8 mm inlet-outlet, max. 0.8 MPa, response time 0.15-0.3 seconds, 12 VDC

CHF 9.90

Available · 7 piece · 2-5 Tage

New
8 Ohm 5W speaker suitable for Waveshare displays 8 Ohm 5W speaker suitable for Waveshare displays
Waveshare
125171
8 Ohm 5W speaker suitable for Waveshare displays

CHF 4.45

Available · 82 piece · 2-5 Tage

Adafruit stepper motor 28mm, 32-step, 1/16 reduction, unipolar, 5VDC Adafruit stepper motor 28mm, 32-step, 1/16 reduction, unipolar, 5VDC
Adafruit
ADA858
Adafruit stepper motor 28mm, 32-step, 1/16 reduction, unipolar, 5VDC

CHF 4.95

Available · 6 piece · 2-5 Tage

DFRobot 18° micro stepper motor, 2-phase, 4-wire, 80g thrust, 20Ω coil resistance, 3.3-5V DFRobot 18° micro stepper motor, 2-phase, 4-wire, 80g thrust, 20Ω coil resistance, 3.3-5V
DFRobot
FIT0708
DFRobot 18° micro stepper motor, 2-phase, 4-wire, 80g thrust, 20Ω coil resistance, 3.3-5V

CHF 12.90

Available · 15 piece · 2-5 Tage

BerryBase RF-300C-11440 DC round spindle motor, 6200 rpm, 23 g.cm, 1-6V, 0.025-0.33A
BerryBase
157067
BerryBase RF-300C-11440 DC round spindle motor, 6200 rpm, 23 g.cm, 1-6V, 0.025-0.33A

CHF 1.45

Available · 100+ piece · 2-5 Tage

Makeblock mBuild water pump set, water pump motor 12V/370-04 PM, with silicone hose
Makeblock
MKB-P3070003
Makeblock mBuild water pump set, water pump motor 12V/370-04 PM, with silicone hose

CHF 11.90

Available · 100+ piece · 2-5 Tage

DFRobot bipolar stepper motor with planetary gearbox, 5.18:1, 1.8° step angle, 18kgcm, 3.4V DFRobot bipolar stepper motor with planetary gearbox, 5.18:1, 1.8° step angle, 18kgcm, 3.4V
DFRobot
FIT0349
DFRobot bipolar stepper motor with planetary gearbox, 5.18:1, 1.8° step angle, 18kgcm, 3.4V

CHF 36.90

Available · 7 piece · 2-5 Tage

Pololu metal geared motor with encoder 99:1, 100 rpm, 29 kg/cm, 25x69 mm, 12V Pololu metal geared motor with encoder 99:1, 100 rpm, 29 kg/cm, 25x69 mm, 12V
Pololu
POL4847
Pololu metal geared motor with encoder 99:1, 100 rpm, 29 kg/cm, 25x69 mm, 12V

CHF 59.90

Available · 3 piece · 2-5 Tage

Adafruit hose for submersible pumps, 6mm ID, 1 metre long Adafruit hose for submersible pumps, 6mm ID, 1 metre long
Adafruit
ADA4545
Adafruit hose for submersible pumps, 6mm ID, 1 metre long

CHF 1.50

Available · 19 piece · 2-5 Tage

Adafruit silicone tube, inner 2.5mm, outer 4.7mm, for peristaltic pumps, 1 metre Adafruit silicone tube, inner 2.5mm, outer 4.7mm, for peristaltic pumps, 1 metre
Adafruit
ADA3659
Adafruit silicone tube, inner 2.5mm, outer 4.7mm, for peristaltic pumps, 1 metre

CHF 3.35

Available · 16 piece · 2-5 Tage

Pololu 50:1 micro metal geared motor HPCB 6V with extended motor shaft Pololu 50:1 micro metal geared motor HPCB 6V with extended motor shaft
Pololu
POL3073
Pololu 50:1 micro metal geared motor HPCB 6V with extended motor shaft

CHF 24.95

Available · 3 piece · 2-5 Tage

ACT motor Nema23 stepper motor, 23HS9440-26, 1.8° step angle, 2.4 Nm holding torque, 4A
ACT-Motor
ACT-23HS9440
ACT motor Nema23 stepper motor, 23HS9440-26, 1.8° step angle, 2.4 Nm holding torque, 4A

CHF 17.15

Available · 6 piece · 2-5 Tage

ACT motor Nema17 stepper motor, 17HS4417L20P1-X2, 1.8° step angle, 0.4 Nm holding torque, 1.7A
ACT-Motor
ACT-17HS4417L
ACT motor Nema17 stepper motor, 17HS4417L20P1-X2, 1.8° step angle, 0.4 Nm holding torque, 1.7A

CHF 10.45

Available · 3 piece · 2-5 Tage

Waveshare ESP32 servo driver board extension: Controls 253 bus servos with WiFi and Bluetooth, 6-12V Waveshare ESP32 servo driver board extension: Controls 253 bus servos with WiFi and Bluetooth, 6-12V
Waveshare
WS-21593
Waveshare ESP32 servo driver board extension: Controls 253 bus servos with WiFi and Bluetooth, 6-12V

CHF 14.90

Available · 9 piece · 2-5 Tage

Adafruit connector for silicone tubing, 4mm outer diameter, for 2-3mm tubing, pack of 5 Adafruit connector for silicone tubing, 4mm outer diameter, for 2-3mm tubing, pack of 5
Adafruit
ADA4764
Adafruit connector for silicone tubing, 4mm outer diameter, for 2-3mm tubing, pack of 5

CHF 3.50

Available · 4 piece · 2-5 Tage

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What are electromagnetic components?

Electromagnetic components are parts that convert electrical energy into mechanical motion, sound, or force. They are based on the interaction between electric current and a magnetic field. These components play a central role in microcontroller technology, as they translate digital control signals into physical actions.

Typical examples include motors, servos, pumps, relays, loudspeakers, and microphones. They are used wherever motion is generated, fluids are conveyed, or sound is produced or detected.

In combination with microcontrollers such as Arduino, ESP32, or Raspberry Pi Pico, they enable the implementation of automated systems, robotics applications, smart home solutions, or measurement and control tasks. The microcontroller handles the logic, while electromagnetic components perform the desired function.

Micro servo as an electromagnetic component
Electromagnetic valve and pump

Application with microcontrollers

When using electromagnetic components with microcontrollers, electrical control is crucial. Since motors, pumps, or loudspeakers usually require higher currents or voltages than a microcontroller can supply, driver circuits such as transistors, MOSFETs, H-bridges, or relay modules are used.

Control is typically carried out via digital GPIO pins or PWM signals to regulate speed, position, or power. Servo motors, for example, use a PWM signal for precise angular positioning, while DC motors are controlled in terms of speed via motor drivers.

For sensing and audio applications, microphones are used that provide analog or digital signals. These can be evaluated directly via ADC pins or digital interfaces such as I2S or SPI. Clean power supply and proper decoupling are important to avoid interference caused by electromagnetic fields.

Commonly used electromagnetic components

The following electromagnetic components are particularly commonly used in microcontroller projects:

  • Motors & servos for motion, positioning, and robotics applications.
  • Pumps for conveying liquids or air in automation and dosing systems.
  • Loudspeakers for acoustic signals, audio output, and voice output.
  • Microphones for capturing sounds, speech, or ambient noise levels.

These components form the interface between software and the real world and are essential for interactive and automated microcontroller projects.

Electret microphone for microcontrollers

FAQ – Electromagnetic components

What is meant by electromagnetic components?
These are electronic components that use electromagnetic fields to convert electrical energy into motion, force, or sound, or vice versa.
Which motors can be controlled directly with a microcontroller?
Servo motors can usually be controlled directly via a PWM signal. DC motors and stepper motors generally require additional motor drivers.
What is the difference between a DC motor, servo motor, and stepper motor?
DC motors rotate continuously, servo motors move to defined angular positions, and stepper motors move in precisely defined steps.
Which loudspeakers can be connected directly to a microcontroller?
Small piezo or mini loudspeakers can be used directly. Larger loudspeakers require an audio amplifier.
Analog vs. digital microphone – which is better for my project?
Analog microphones are easy to connect and flexible. Digital microphones offer more stable signal quality and are particularly suitable for audio and speech processing.