SEN-09198Piezoelectric vibration sensor with analog output, the output voltage level is proportional to the vibration strength. SparkFun SEN-09198

A module with a rotary encoder and RGB LED lighting for M5Stack sets. It communicates via the I2C interface. M5Stack U135

The ACS72981 current sensor module uses the Hall effect to accurately and safely measure AC and DC current, providing electrical isolation of the current path. With a wideband analog output (up to 250 kHz) and low conduction resistance (0.2 mΩ), it minimizes energy loss and offers a fast response time of less than 2 µs. Pololu 5252

ToF distance sensor (Time of flight) with a range of up to 5 m. The module is supplied with the voltage of 3.3 V and communicates via the I2C interface. SparkFun SEN-19037

ToF distance sensor (Time of flight) with a range of up to 5 m. The module is supplied with the voltage of 3.3 V and communicates via the I2C interface. SparkFun SEN-19218

The UM7-LT orientation sensor from Redshift Labs is an Attitude and Heading Reference System (AHRS) that contains a three-axis accelerometer, rate gyro, and magnetometer. It combines this data using an Extended Kalman Filter to produce attitude and heading estimates. This LT version of the UM7 does not have an enclosure.

Module with the 3-axis MMA8452Q accelerometer. The system has a user selectable measurement scale of ±2g/±4g/±8g. There are two Qwiic connectors on the board and holes with 2.54 mm raster. SparkFun SEN-14587

A compact 3-in-1 module that simultaneously measures CO₂ concentration, temperature, and humidity. With 2.4 GHz Wi-Fi connectivity and MQTT and REST API support, it easily integrates with IoT systems and cloud platforms. It offers local data storage, a built-in web server, and an RGB indicator for air quality. Numato Lab NLSENZA002

Heart rate measurement module compatible with Arduino and Raspberry Pi (Gravity: Heart Rate Monitor Sensor For Arduino). It uses PPG technique, which in a simple and cheap way is able to measure the changing volume of blood. DFRobot SEN0203

Module with an infrared sensor AMG8833 - a measurement matrix with a resolution of 64 pixels (8x8). It offers an accuracy of 2.5°C and the ability to detect people at a distance of up to 7 m. Communication with the sensor is via the I2C interface. SparkFun SEN-14607

A compact module for precise air temperature and humidity measurement, designed for home, commercial, and industrial applications. With 2.4 GHz Wi-Fi connectivity and support for MQTT, MQTTS, and REST APIs, it easily integrates with IoT systems and cloud platforms. The device offers a built-in web server, local data storage, and on-mode sensor calibration. A clear RGB indicator and AP mode simplify configuration and daily use in smart home and automation projects. Numato Lab NLSENZA001

Module with 9 QTRX type optocoupler with RC (digital) output. The module operates from 2.9 V to 5.5 V, detects objects at a distance of up to 40 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4309

Soil moisture sensor with analog output. The probe has two pointed tabs, making it easy to insert into the ground. It is supplied with the voltage of 3.3V or 5V. DFRobot SEN0114

Module with CO2, temperature and humidity sensor SCD-41. Equipped with a STEMMA QT connector, it communicates via the I2C interface. Adafruit 5190

A miniature lidar distance sensor that detects objects up to 10 cm away, regardless of color, transparency, or lighting. It generates a digital signal (0 V on detection), operates in the 3-5.5 V range, draws only 30 mA, and supports sleep mode via the ENABLE pin. Ideal for robotics, automation, and contactless interfaces, it offers a fast response time (142 Hz), switching hysteresis, and a compact housing with an indicator LED. Pololu 5552

Module with a digital distance sensor with a range of up to 5 cm. It has a digital output that goes low when an object is detected. Pololu 4050

Soil moisture sensor with I2C interface. The probe has two pointed tabs, making it easy to insert into the ground. The sensor is supplied with the voltage of 3.3 V or 5 V. SparkFun SEN-17731

This sensor is a carrier/breakout board for ST’s VL6180X proximity and ambient light sensor, which measures the range to a target object up to 20 cm away (or 60 cm with reduced resolution). Pololu 2489

MEMS extension module based on the STR9 dongle, STM, RoHS

Module with MLX90614 temperature sensor with a measurement accuracy of 0.2°C and a viewing angle of 35°. The board is equipped with a Grove connector and communicates via the I2C interface. Seeed Studio 101020895