Module with a 4-element 14-segment display. The board is equipped with a Qwiic connector and communicates via the I2C interface. SparkFun COM-16916

Module with 5 QTRX 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 4345

4-core cable with a length of 15 cm, terminated on one end with a Grove plug, and on the other with a male goldpin connector. Seeed Studio 110990210

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

The SparkFun Clock Generator 5P49V60 breaking plate offers a wide range of customizable frequencies in a wide range of different signal types with a single reference clock. Bob-15734

Module with a 4-color e-Paper display with a diagonal of 1.64" and a resolution of 168x168 px. It communicates via the SPI interface. Waveshare 1.64inch e-Paper Module (G)

Laser distance sensor with a range of 5 cm to 15 m. It has a high accuracy of ± 2 cm and a resolution of 1 mm. DFRobot SEN0524

Flow sensor with thread G1/4. Dedicated to liquids of high concentration and low viscosity. DFRobot SEN0549

DC motor driver with voltage 4.5..28V and maximum continuous current of 2.6A. It has the ability to easily implement the feedback loop and numerous control interfaces. Polol 3142

Waveshare 5DP-CAPLCD-B is a high-brightness HDMI display with strong mechanical resistance, designed for embedded projects, HMI panels, and compact user interfaces. Thanks to optical bonding technology, tempered glass, and full compatibility with Raspberry Pi and operating systems, it provides a reliable solution for demanding visual applications.

Limit switch without SPDT lever. Used, among other things, in computer mice

Waveshare 5DP-CAPLCD-G is a high-brightness touch display with a rugged design, equipped with a resistive panel that allows operation in demanding conditions. Ideal for industrial, field, and educational applications where precise single-point control and high resistance to interference and moisture are essential.

Module with MLX90615 temperature sensor with a measurement accuracy of 1°C and a resolution of 0.02°C. It communicates via the UART interface

Heart rate monitor module based on the popular MAX30101 chip. The board is equipped with connectors compliant with the Qwiic standard. SparkFun SEN-16474

Black and white OLED display with a resolution of 128x32 pixels. Powered with the voltage from 3.3 V to 5V, it communicates via the I2C interface. Waveshare 0.91inch OLED Module

Module with 3 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 4403

Module with 3 QTRX 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 30 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4303