Fast delivery
Discount conditions for companies
Up to 10% discount for pupils, students and educational institutions
Europe wide shipping for 4,90€
Close filter
 
from to
 
1 from 9
No results were found for the filtering!
Inclination sensor SW-520D / Vibration sensor
Inclination sensor SW-520D / Vibration sensor
Content 1 Piece
€0.82 *
Item no: F23106767

Delivery time: appr. 1-3 days

Ultrasonic sensor, distance sensor - HC-SR04
Ultrasonic sensor, distance sensor - HC-SR04
Content 1 Piece
€2.18 *
Item no: FUN-1010564

Delivery time: appr. 1-3 days

Motion detector SR602 MINI Motion Sensor Detector Module
Motion detector SR602 MINI Motion Sensor...
Content 1 Piece
€2.27 *
Item no: F23107467

Delivery time: appr. 1-3 days

MPU-6050 module - triaxial acceleration sensor, gyroscope
MPU-6050 module - triaxial acceleration sensor,...
Content 1 Piece
€3.62 *
Item no: F23107397

Delivery time: appr. 1-3 days

Light barrier, photoelectric switch - U-shape
Light barrier, photoelectric switch - U-shape
Content 1 Piece
€1.67 *
Item no: F23107474

Delivery time: appr. 1-3 days

Distance sensor, obstacle detection sensor - Infrared (IR)
Distance sensor, obstacle detection sensor -...
Content 1 Piece
€1.59 *
Item no: F23107475

Delivery time: appr. 1-3 days

Motion detector, PIR sensor - HC-SR501
Motion detector, PIR sensor - HC-SR501
Content 1 Piece
€2.34 *
Item no: FUN-1010565

Delivery time: appr. 1-3 days

5V touch sensor module for microcontroller
5V touch sensor module for microcontroller
Content 1 Piece
€1.48 *
Item no: F23106653

Delivery time: appr. 1-3 days

Distance sensor, obstacle detection sensor TCRT5000 - Infrared (IR) - 90°
Distance sensor, obstacle detection sensor...
Content 1 Piece
€1.69 *
Item no: F23107303

Delivery time: appr. 1-3 days

Ultrasonic sensor RCW-0001, 3.3V - 5V for ESP32 and others
Ultrasonic sensor RCW-0001, 3.3V - 5V for ESP32...
Content 1 Piece
€3.11 *
Item no: F23108243

Delivery time: appr. 1-3 days

Holder for ultrasonic sensor HC-SR04
Holder for ultrasonic sensor HC-SR04
Content 1 Piece
€1.19 *
Item no: F23106666

Delivery time: appr. 1-3 days

RCWL-0516 - Motion detector for Arduino, Doppler radar module
RCWL-0516 - Motion detector for Arduino,...
Content 1 Piece
€2.20 *
Item no: F23106645

Delivery time: appr. 1-3 days

1 from 9

Distance sensors and motion detectors in microelectronics

In the standard equipment of every hobbyist at least one motion detector or distance sensor can be found with a pretty high probability. And there is a good reason for this, because this is the only way to realize great projects like a line tracker chassis or an efficient light control within your own four walls.
The function of motion detectors and distance sensors is easily explained. Both sensors use infrared technology, the motion detector registers temperature changes (e.g. due to body heat) within the field of view. If an increase in temperature is detected within the PIR range, the motion detector passes on a signal. The level of the threshold until the signal is output is often calibrated with a trimming potentiometer directly on the module.
Distance sensors function in a similar way: There is an infrared light emitting diode on the sensor, which emits infrared light that is not visible to humans. A photo resistor (LDR) is mounted in the immediate vicinity of the diode. If an object enters the PIR range of the sensor, it reflects the infrared light of the diode. The LDR detects fluctuations in the incidence of light and passes them on in the form of an electronic signal for processing by a logic unit.

Other sensors for measuring distances

A popular module for measuring distances is the HC-SR04 ultrasonic sensor. Unlike the sensor types described above, the HC-SR04 module does not work with an infrared signal, but with ultrasonic waves. The ultrasonic sensor emits waves in any direction and measures the time until they return to the HC-SR04. From this, the distance between an object and the HC-SR04 ultrasonic sensor can be measured in real time and even displayed visually.

The functionality of motion detector, distance sensor and ultrasonic sensor at a glance

Motion detector (PIR sensor) HC-SR05:
- detects temperature differences in the PIR range

Ultrasonic sensor HC-SR04:
- measures the distance to an object using ultrasonic waves

Distance sensor:
- measures changes in the incidence of light using a photoresistor

Last viewed
-10% DISCOUNT ♥