The sensor responds to chakra changes in the tissues by analyzing the reflected light (the module contains an illuminator and a sensor).

The arduino turbidity sensor detects water quality by measuring level of turbidity. It is able to detect suspended particles in water by measuring the light transmittance and scattering rate which changes with the amount of total suspended solids (TSS) in water. SEN0189

3-axis gyroscope module with L3G4200D system, equipped with I2C and SPI interfaces. Power supply with a voltage of 3..5 V, 2.54 mm straight and angled connectors included. GY-50

Ultrasonic distance sensor MB1020 with a range from 0 to 645 cm. It has an output in the form of a serial interface, analog signal or generates an impulse whose duration is proportional to the measured distance. Pololu 792

Color Sensor, complete color detector

The GP2Y0A60SZ offers a wide detection range of 4″ to 60″ (10cm to 150cm) and a high update rate of 60Hz. The distance is indicated by analog voltage - only a single analog input is required to interface with the module. Pololu 2476

Temperature and humidity module, -40C to +125C, 0 - 99.9% RH, AOSONG, RoHS

TVOC Sensor is a high-performance and precise sensor for detecting volatile organic compounds, formaldehyde, and CO₂. The integrated UART interface allows easy communication with microcontrollers, making it an ideal solution for air monitoring projects in homes, industry, vehicles, and consumer electronics.

MEMS accelerometer, magnetometer and gyroscope on a single die with a high speed ARM Cortex-M0 based processor

Module with proximity and ambient light sensor based on the VCNL4020 system. It allows you to detect obstacles in the range from 0 to 20 cm and measure light intensity from 0.26 to 16,000 lux. It communicates via the I2C bus. Adafruit 5810

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

HSTS08L 10A 2.5V Current Sensor. Enables measurement of high currents. modHSTS08L

Non-contact liquid level sensor with Gravity interface. It allows you to detect the level of liquid in non-metallic containers. DFRobot SEN0485

Module with the LIS2DW12 3-axis accelerometer. The system has a user selectable measurement scale of ± 2g/±4g/±8g/±16g. There is a Gravity connector on the board. DFRobot SEN0409

Module with 1 QTRX 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 4441

Module with 1 QTRX 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 4401

A high-precision 12-bit magnetic encoder that provides accurate angle measurement from 0 to 360°. It supports I2C and PWM interfaces for easy integration with microcontrollers and control systems. Powered by 5V and featuring 1024-bit analog resolution, it\'s ideal for projects requiring smooth and stable operation. Makerbase MKS AS5600

The VCNL4200 sensor module combines distance detection and ambient light measurement, ideal for applications such as robotics and home automation. Thanks to infrared technology, the detection range is up to 1.5 meters, and the built-in ALS sensor allows you to measure light intensity in the range of 0.003 to 1570 lux, making it a versatile solution for monitoring lighting conditions. Adafruit 6064

ToF laser rangefinder. It enables detection of many objects, has a field of view of about 25 ° and is able to detect objects at a distance of up to 5 m. Communicating via the I2C interface. Pololu 3416

The modPhotoelectric sensor with an LM393 comparator and a 10 mm slot width enables reliable detection of interrupters in applications requiring pulse counting, position detection, and speed measurement. Thanks to its digital TTL output and mounting holes, it is suitable for direct integration with microprocessor systems. modPhotoelectric