Infrared sensor module for presence and motion detection based on the STHS34PF80, featuring an I2C interface and STEMMA QT / Qwiic connectors, capable of detecting objects up to 4 m without a lens. Adafruit 6426

This micro:bit module allows for light and object detection and line tracking, making it ideal for educational and robotic projects. Equipped with three phototransistors, it provides precise measurements, and the analog signal transmitted to the micro:bit allows for precise analysis of the surroundings. The board can be connected directly to the micro:bit or via alligator clips. Kitronik 5678

Module with temperature and humidity sensor. It allows you to measure temperature in the range from 5 to 50°C and humidity in the range from 10 to 90%. The module communicates via the I2C interface. SparkFun SEN-11295

A module with an acceleration and rotational speed sensor based on the LSM6DS3TR-C system and the LIS3MDL magnetometer. Equipped with a STEMMA QT connector, it communicates via the I2C or SPI interface. Adafruit 5543

et with a measuring module and a probe for measuring electrical conductivity. It allows you to measure the salinity of water and soil. It has a Gravity analog output interface. DFRobot DFR0300-H

Non-contact temperature sensor with a measuring range from -70 to 380°C. It uses infrared waves and has a current output. DFRobot SEN0264

Finger Vein Scanner Module (B) is a thin, energy-efficient biometric module with finger vein detection based on a Cortex-M4F microcontroller, designed for precise user identification in security applications. NIR technology enables effective recognition regardless of the skin surface condition, making the module a reliable alternative to traditional fingerprint readers. Thanks to its compact dimensions and a rich set of accessories, it facilitates integration with smart locks, door handles, access control systems, and compact IoT terminals.

Expansion board with ToF VL53L4CX distance sensor with a range of up to 6 m. The shield is compatible with STM32 Nucleo boards. STMicroelectronics X-NUCLEO-53L4A2

Crowtail-Capacitive Moisture V2.0 is a durable soil-moisture sensor based on capacitive technology, ideal for monitoring plant hydration levels. Intended for use in projects with 3.3–5 V microcontrollers.

A set with a temperature sensor based on the DS18B20 system in the form of a waterproof measuring probe, a sensor adapter and a cable. Communication via the 1-Wire interface. DFRobot KIT0021

Module with 3-axis accelerometer and ISM330DHCX gyroscope. Equipped with a Qwiic connector, it communicates via the I2C or SPI interface. SparkFun SEN-19764

Module with digital barometer BMP388. It enables pressure measurement in the range from 300 to 1250 hPa and communicates via I2C or SPI. Waveshare BMP388 Barometric Pressure Sensor

LiPo battery monitor module based on the MAX17043 chip. Allows the voltage and state of charge of the battery to be measured. SparkFun TOL-20680

Module with integrated proximity and ambient light sensors and IR emitter in the VCNL4040 system. It allows the detection of obstacles in the range of 0 to 20 cm (no dead zone). It communicates via the I2C bus. SparkFun SEN-15177

SEN-08685

Module with ACS723 current sensor with a measuring range of AC and DC ± 5 A. It communicates via an analog interface. SparkFun SEN-13679

Long, flexible, pressure sensor that can be used to implement very sensitive force detection. The sensor is durable and designed to detect static and dynamic pressure at high response speeds. DFRobot SEN0293

Liquid level sensor (up to 124 mm) with analog output. The output voltage varies in proportion to the liquid level. The measuring element is placed in a plastic housing. Adafruit 3828

ST Microelectronics\' compact Time-of-Flight (TOF) sensor uses a 940 nm laser to precisely measure distances from 1 mm to 1.2 m with a resolution of 1 mm. It supports an I²C interface, has an XSHUT input for shutdown and a GPIO1 output for object detection, and is compatible with voltages from 2.6 to 5.5 V thanks to a built-in regulator and logic level converter. Pololu 3692

Module with 4 QTR type optocoupler with analog 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 4204