The ID-20LA RFID reader from ID Innovations has an operating frequency of 125 kHz. It has a built-in antenna and pins with 2 mm spacing. Among other things, it is designed to work with the RFID USB Reader module. SparkFun SEN-11828

A single-channel DC motor controller with a UART TTL interface. It is powered from 4.5 V to 48 V and can deliver up to 2.2 A of current. Board with connectors for assembly. Pololu 5063

M12 mount lens. It has a focal length of 2.7 mm mm and a 113° FoV viewing angle. It is designed to work with the Raspberry Pi HQ M12 camera. Waveshare WS1132712

Antenna with built-in LNA amplifier with high sensitivity, for mounting in a device using a GPS module. The antenna has a 110mm cable, terminated with a U.FL plug (IPEX). Dimensions of the device: 8 x 8 x 7mm

Module with 5 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 4145

Module with 9 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 4409

Module with 2 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 4442

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

Stepper motor driver with MP6500 system with a potentiometer for current regulation. It allows the bipolar motor to be supplied with current up to 1.5A per phase without the use of a heat sink. Pololu 2967

Laser distance sensor with a measurement range of 0.3 m to 2 m. It communicates via the UART interface. Benewake TF-LC02

A single-channel DC motor driver with an I2C interface. It is powered from 4.5 V to 48 V and can deliver up to 2.2 A of current. A board with soldered connectors. Pololu 5060

A single-channel DC motor driver with an I2C interface. It is powered from 4.5 V to 48 V and can deliver up to 2.2 A of current. A board with connectors for mounting. Pololu 5061

A single-channel DC motor controller with a UART TTL interface. It is powered from 4.5 V to 48 V and can deliver up to 2.2 A of current. Board with soldered connectors. Pololu 5062

Module with an infrared sensor MLX90640 - a measuring matrix with a resolution of 32x24 pixels. It offers an accuracy of 1.5°C and a viewing angle of 55x35°. Communication with the sensor takes place via the I2C interface. SparkFun SEN-14844

An 4-channel I2C expander module, which is based on the TCA9546A chip. It allows connecting several devices with the same address to a single I2C interface. Adafruit 5664

A 4-channel I2C expander module, which is based on the TCA9546A chip. It allows connecting several devices with the same address to a single I2C interface. Adafruit 5663

Step-Down DC-DC converter module based on the D36V6F12 system. Input voltage 12.2.50V, output voltage 12V (max. 600mA). Pololu 3796

This compact (0.4″ × 0.5″) switching step-down (or buck) voltage regulator takes input voltages up to 50 V and efficiently reduces them to 9 V while allowing for a maximum output current of 600 mA. It has a very low dropout, so it can be used with input voltages that are within a few hundred millivolts of its output.

Miniature module with MicroSD card slot dedicated to QT Py and Xiao boards. Adafruit 5683