Module with 13 QTR 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 4113

Temperature sensor based on the DS18B20 system in a water proof measuring probe. Communication via the 1-Wire interface. DFRobot DFR0198

Compact ORP system compatible with Arduino. It allows you to monitor the ORP without having to add additional circuits or components. DFRobot SEN0165

Module with a 3-axis magnetometer based on the MLX90393 system. It has a measuring range from ± 5mT to ± 50mT and a resolution of 0.161 µT. The I2C or SPI interface is used for communication. Adafruit 4022

Contrast sensor module. It has two integrated operating modes: analog and digital. It has the ability to set the digital mode for color detection. DFRobot SEN0147

QTR-3A Reflectance Sensor Array

QTR-1RC Reflectance Sensor (2-Pack)

Ultrasonic distance sensor MB1200 with a range from 0 to 765 cm. It generates an output in the form of a pulse, the duration of which is proportional to the measured distance. Pololu 1650

Analogue temperature and humidity sensor module based on SHT30 sensor. It is characterized by high reliability and stability with low energy consumption. It is compatible with 3.3V and 5V controllers, such as Arduino, micro:bit, ESP32. DFRobot DFR0588

Air quality sensor module based on the SGP40 system. It communicates via the I2C interface. DFRobot SEN0392

Temperature and humidity sensor SHT10 with a stainless probe. Provides high temperature and pressure resistance. DFRobot SEN0148

Sensor for detecting the distance, intensity and frequency of lightning within a radius of 40 km. The module enables weather enthusiasts to measure local storm data. SparkFun SEN-15441

LilyPad reed switch in a black insulated casing preventing the element from breaking. SparkFun DEV-13343

Bidirectional current sensor module based on the ACS724 circuit. It allows you to measure current in the range -50A to + 50A. It operates with a voltage of 4.5V to 5.5V and is intended for use in 5V systems. Pololu 4049

The Digilent Pmod NAV uses the LSM9DS1 3-axis accelerometer, 3-axis gyroscope, 3-axis magnetometer, plus the LPS25HB digital barometer to provide users with 10-DOF functionality. Digilent 410-326

Module with a CO2 sensor based on the XENSIV PAS CO2 system from Infineon. It enables precise measurement of CO2 concentration in ppm via I2C, UART and PWM interfaces. SparkFun SEN-2295

IR optical sensor module based on a slotted optocoupler. It enables the construction of an incremental encoder

Module with INA219 system with bi-directional current meter

Czujnik pasywny czujnika (PIR) firmy Panasonic, który jest wykrywany pod kątem detekcji. Oferuje cyfrowy sygnał wyjściowy w 32 strefach na odległość detekcji do 5 m i detekcji 90° x 90°. SparkFun COM-23946

VL53L8CX sensor module that offers fast and accurate distance measurement up to 4 m via I²C or SPI digital interface. It can measure distances to multiple targets simultaneously, providing depth map data with a resolution of up to 8x8. The built-in power supply circuit allows operation in the voltage range from 3.2 V to 5.5 V. Pololu 3419