The compact KY-003 Hall sensor module is capable of detecting magnetic fields, making it ideal for measuring rotational speeds and for automation and robotics applications.

Module with TLV493D 3-axis magnetic field sensor. Equipped with a STEMMA QT connector, it communicates via the I2C interface. Adafruit 4366

The MQ-8 sensor allows the measurement of hydrogen concentration in the air. The measuring range of the sensor is in the range of 100 - 10,000 ppm.

Module with acceleration and rotational speed sensor based on the LSM6DSOX system. Equipped with a STEMMA QT connector, it communicates via the I2C or SPI interface. Adafruit 4438

The current measurement with the value 0-20A is carried out by the ACS712-05 system based on the Hall effect. The sensitivity of the system is 100mV / A (analogue signal) .modACS712-20

Module with a motion sensor that uses the Doppler effect to detect moving objects using microwaves. It is powered with the voltage of 5 V and has a digital output (Gravity connector). DFRobot SEN0192

Module with 3-axis ADXL375 accelerometer with a wide measurement range up to ±200g. The board is equipped with a STEMMA QT connector and communicates via the I2C or SPI interface. Adafruit 5374

A multi-channel light and color sensor operating as a miniature spectrometer, enabling detailed analysis of the light spectrum. The device offers 14 measurement channels covering 11 visible light bands, a near-infrared (NIR) channel, an unfiltered channel, and flicker detection. Communication with the microcontroller is via an I²C interface, and the STEMMA QT/Qwiic board allows for quick connection to platforms such as Arduino and Raspberry Pi. The built-in 16-bit ADC and SMUX system ensure precise measurements and flexible management of detection channels. Adafruit 6477

The MQ-3 sensor allows you to measure the concentration of alcohol vapors. The measuring range of the sensor is in the range of 0.05 mg / L to 10mg / L, and an analogue signal is obtained at the output.

Non-invasive AC Current Sensor, 15A, YHDC, RoHS

The module with the MCP9600 amplifier is designed to work with the thermocouple type K, J, T, N, S, E, B and R. It has a screw connection and communicates via the I2C interface. Pimoroni PIM437

Module with the MQ3 analog alcohol sensor. It allows you to detect gas and build a simple breathalyzer. The module is powered by 5 V and has an analog output

Module with hall sensor A3144, analog and digital output from comparator, RoHS

Aluminum tensometer beam, allowing weight measurement up to 2 kilograms. It has four wires. It is used in kitchen scales and portable scales.

Designed to pair with the MyoWare Muscle Sensor; 10-segment bar graph shows the magnitude of the measured signal. The more muscle activation measured, the higher up the board the lit LEDs will go. DEV-13688

Module with five TCRT5000 reflective sensors. Powered with 5 V, it has analog outputs. It can detect objects at a distance of up to 15 mm

Module with 3-axis accelerometer and ISM330DHCX gyroscope. Equipped with a STEMMA QT connector, it communicates via the I2C or SPI interface. Adafruit 4502

Diffuse sensor with digital output. The threshold can be adjusted with the built-in potentiometer

The GY‑271 module with HMC5883L sensor is a precise digital compass offering three-axis magnetic field measurement, I²C communication, and 3 V–5 V operation. Suitable for robotics, navigation, and embedded systems requiring low power consumption and a compact form factor. GY‑271

The module is based on the Acconeer XM125 radar, which uses 60 GHz radar technology, offering distance measurement up to 20 meters and recognition of objects and their movement speed. The sensor is characterized by low power consumption, making it ideal for battery-powered devices, and also allows for various detection modes, such as level measurement or human presence. Supported by the Arduino library and the Acconeer Exploration Tool, the module provides support for monitoring, debugging and configuration, offering a wide range of applications from smart homes to advanced robotics and security systems. SParkFun SEN-24540