A small LCD panel with the ability to control its transparency. The panel can block up to about 95% of light. Adafruit 3627

Two-channel driver for DC motors with an operating voltage from 7 to 35 V and a continuous current up to 10 A. It can be controlled by an analog signal, PWM, UART, RC or by means of built-in buttons. Cytron MDDS10

DRV8825 Stepper Motor Driver Module for Arduino. It allows you to control two drives, equipped with an XBee connector. DFRobot DRI0023

BLE module based on Cortex-M4F core with integrated 2.4GHz antenna. It has been equipped with numerous peripheral systems, including UART, I2C, SPI, I2S interfaces and ADC inputs. Has support in the Arduino IDE. SparkFun WRL-15484

Audio Analyzer is a module with sound analyzer based on the MSGEQ7 system. It divides the sound into seven frequency bands, and then allows you to read the peak levels of each band. It allows you to measure the sound in the following frequencies: 63Hz, 160Hz, 400Hz, 1kHz, 2.5kHz, 6.25kHz and 16kHz. DFRobot DFR0126

OLED 64x48 display, white characters / black background, 0.66, 3V power supply, SSD1306 driver, communication via I2C and SPI interfaces, PARALLEL WHITE display color, working temperature from -40 to +70, ext. 12V

Pololu 4-Channel RC Servo Multiplexer (Partial Kit)

A set of 5 modules with a button and LED backlight. The boards are equipped with a Gravity connector and communicate via a digital interface. DFRobot DFR0785

A set of 5 modules with a bistable button and LED backlight. The boards are equipped with a Gravity connector and communicate via a digital interface. DFRobot DFR0789

USB - UART converter based on the FT232RL chip. Compatible with voltages of 3.3 V and 5 V, it is equipped with a microUSB connector. Cytron UC00A

The MPX5700AP air pressure sensor with a measuring range from 15 to 700 kPa. It communicates via the I2C interface. DFRobot SEN0456

Temperature and humidity sensor module with DHT22 sensor (AM2302)

Sound card in the form of an expansion module with a USB adapter designed for NVIDIA Jetson Nano development kits. Waveshare Audio Card for Jetson Nano

Pololu 9V Step-Up Voltage Regulator U3V50F9

Module with barcode and QR scanner. It allows you to read one-dimensional and two-dimensional codes using the intelligent image recognition algorithm. It has a built-in USB and UART interface. DFRobot SEN0512

Module with 4 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 4444

Module with ToF VL53L4CD sensor with a range of up to 1.3 m and a resolution of 1 mm. It is equipped with a Qwiic connector and communicates via the I2C interface. SparkFun SEN-18993

Reflection sensor module with 1 QTRXL-HD optocoupler with analogue output. The module is powered by 2.9 ... 5.5V voltage, detects objects at a distance of up to 80mm. Pololu 4641