A compact Hall-effect current sensor that provides accurate DC and AC current measurement within a ±30 A range with galvanic isolation. It features a high-sensitivity analog VOUT output with a 150 kHz bandwidth, enabling fast and precise readings in dynamic systems. The module operates over a wide temperature range of -40°C to 125°C, and the low current path resistance minimizes energy loss. Its small size and flexible mounting options make it ideal for prototyping, industrial systems, and space-constrained projects. Pololu 5447

Measurement module for dissolved oxygen in water. It allows you to determine the level of water quality. The set includes a measuring module and a probe. DFRobot SEN0237-A

360-degree laser scanner (LIDAR), with a range of up to 12 meters and measurement frequency up to 10 Hz (optimal value 5.5 Hz). DFRobot DFR0315

A compact Hall-effect current sensor that provides accurate DC and AC current measurement within a ±10 A range with galvanic isolation. It features a high-sensitivity analog VOUT output with a 150 kHz bandwidth, enabling fast and precise readings in dynamic systems. The module operates over a wide temperature range of -40°C to 125°C, and the low current path resistance minimizes energy loss. Its small size and flexible mounting options make it ideal for prototyping, industrial systems, and space-constrained projects. Pololu 5446

An IMU module that adds a full 9-axis sensor suite to Feather boards for motion and orientation measurement. It combines an accelerometer, gyroscope, and magnetometer, providing stable and accurate data ideal for robotics, stabilization, wearables, and 3D motion analysis. The module communicates via I2C and features a STEMMA QT port for easy integration and solderless connection of additional sensors. Adafruit 4565

Pololu 5333 current sensor provides electrically isolated AC and DC current measurement in the range of -50 A to +50 A. Based on the Allegro CT433-HSWF50MR sensor, the module utilizes TMR technology, offering a 1 MHz bandwidth and an analog output signal.

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

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

The QTRXL-MD-01A-S reflective sensor with an analog output enables precise detection of lines and objects. Thanks to its extended range and high sensitivity, it is used in robotic and automation projects. The JST SH connector allows easy integration, and the wide supply voltage range enables flexible use in 3.3 V and 5 V systems.

Module with 6 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 40 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4406

SEN-13314

Compact current sensor Pololu 5315 based on the CT433-HSWF70MR, designed for measuring currents up to ±70 A at a 3.3 V supply in applications requiring galvanic isolation and analog voltage output. Pololu 5315

Compact current sensor based on TMR technology, enabling precise measurements up to 30 A with minimal energy losses. Thanks to a wide 1 MHz bandwidth, galvanic isolation and interference immunity, it is perfect for applications requiring fast response and high accuracy. Pololu 5317

Precision Hall effect current sensor, providing galvanic isolation and wide 250 kHz bandwidth. Low conductive path resistance, magnetic interference immunity and ratiometric analog output make it ideal for AC and DC current monitoring applications. Pololu 5281

Compact current sensor Pololu 5308 based on the CT432-HSWF70DR, designed for measuring currents from 0 to 70A at 5V supply in applications requiring galvanic isolation and analog voltage output. Pololu 5308

Great way to upgrade a project that uses a photocell and needs RoHS compliance. Due to the high rejection ratio of infrared radiation, the spectral response of the ambient light sensor is close to that of human eyes. Adafruit 2748

Liquid Level Sensor

A reflective sensor that precisely measures the intensity of light reflected from a surface using an IR LED and a phototransistor. It offers a long detection range—optimally around 20 mm, and up to 80 mm—thanks to the QTRXL sensor with a built-in lens and adjustable LED brightness. It generates a digital RC signal that\'s easily read by microcontrollers like Arduino or Raspberry Pi. Pololu 4540

DFRobot Gravity analog light intensity module for Arduino and Raspberry Pi. DFRobot DFR0026

A module for the detection of gases and vapors of alcohols, including ethanol.