Module with 31 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 50 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4131

Kit with LEDs, battery, needles and conductive thread that allows you to sew LED lighting into clothes. SparkFun DEV-11590

The panel Step-Down converter module enables precise voltage and current regulation, characterized by high efficiency, built-in protections and an RS485 interface with support for the Modbus protocol, ideal for applications requiring precise power control

Module with 2 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 30 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4142

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.

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

LCD panel with the possibility of controlling its transparency. Can block up to about 95% of incident light. Adafruit 3330

A set for building a simple electronic watch worn on a wrist. It consists of an electronic board, a housing and a strap. SparkFun KIT-11734

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.

Unshielded UTP category 6 Ethernet network cable with RJ45 plugs. Lanberg PCU6-10CC-0750-BK

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

Module with 31 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 50 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4331

INA169 current sensor module. The system can be supplied with the voltage from 2.7 V to 60 V and has an analog output. SparkFun SEN-12040

Module with 31 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 50 mm. The sensor will be used in projects that require detection of changes in the ground, e.g. in linefollower robots. Pololu 4231

Module with a temperature and humidity sensor DHT22. It allows you to measure humidity in the range from 0 to 100% and temperature from -40 to 80℃. DFRobot SEN0137

Module with an analog MQ2 gas sensor. It enables the detection of LPG, butane, propane, methane, alcohol, hydrogen and smoke. It is powered with the voltage of 5 V and has an analog output. DFRobot SEN0127

Graphical display 128x64 pixels, 92x53.6 mm, extended temperature range, controller: ST7565R

Camera module with OV5647 sensor and movable IR filter. Works with all versions of the Raspberry Pi. The camera is equipped with a matrix with a resolution of 5 MPx. ArduCAM B0151