Module with bi-directional current sensor based on the INA226 system. It allows you to measure current and power, works with a voltage of 0-36 V. It has an I2C interface.

Pololu 5242 with the ACS71240KEXBLT-050B3 chip is a compact current sensor module for precision measurement applications in the ±50 A range. With galvanic isolation, fast response to current changes, and short-circuit detection capability, it is used in power systems, automotive and industrial electronics, and embedded projects. It is ideal for measuring currents in both DC and AC circuits while ensuring safety and accuracy.

Module with a distance sensor with a range of up to 130 cm. It has a digital output that generates a pulse with a width proportional to the measured length. Pololu 4071

Module with 1 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 30 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4201

ACS724LLCTR-05AU current sensor module with a current measurement range from 0 to 5 A. It communicates via an analog interface. Pololu 4048

The liquid flow sensor is made of a plastic body, a flow rotor and a Hall sensor. DFRobot SEN0217

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 5272

Ultrasonic ToF sensor dedicated to the identification of materials at a distance of 2 to 10 cm. It can distinguish between hard and soft materials and transmits information via digital IO (high/low) or UART interface. DFRobot SEN0560

SEN-11999

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

The MQ-6 sensor allows the measurement of LPG, propane and isobutane. The measuring range of the sensor is in the range of 300 - 10.000 ppm, while the output receives an analog signal.

A module with a high precision temperature sensor based on the MCP9808 chip. Equipped with a STEMMA QT connector, it communicates via the I2C interface. Adafruit 5027

ToF VL53L0X distance sensor module designed for M5Stack sets. It allows you to measure distances up to 2 m and communicates via the I2C interface. M5Stack U072

Module with 5 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 4205

Temperature and humidity sensor module based on the HTS221 chip. Equipped with a STEMMA QT connector, it communicates via an I2C or SPI interface. Adafruit 4535

Module with waterproof barometer LPS33HW. It enables pressure measurement in the range from 260 to 1260 hPa and communicates via I2C or SPI. Adafruit 4414

ToF distance sensor module based on the VL6180X system. It offers a range of 2 to 50 cm and communicates via the I2C interface

Module with a temperature and humidity sensor based on the HTU31 system. Equipped with a STEMMA QT connector, it communicates via the I2C interface. Adafruit 4832

Module with a digital temperature sensor PCT2075. It enables measurement in the range from -25 to 100°C with an accuracy of ±1°C. Communicates via I2C. Adafruit 4369

Module with an integrated proximity and ambient light sensor based on the VCNL4040 system. It can detect obstacles in the range of 0 to 20 cm. It communicates via the I2C bus. Adafruit 4161