Module with 4-digit 7-segment LED display. The board is equipped with a TM1637 driver and communicates via a digital interface

Reflectance sensor module with a single QTRX sensor and RC output, designed for detecting differences in surface reflectivity. Supply voltage 2.9–5.5V, low current consumption, version with side-entry JST-SH connector. Pololu 4340

Module with 8-digit 7-segment LED display. The board is equipped with a 74HC595 driver and communicates via a digital interface

2-channel converter that provides easy communication between the UART TTL serial interface and RJ45 Ethernet. Waveshare 2-CH UART TO ETH

Ultrasonic distance sensor module with a range of up to 720 cm. It communicates via UART, I2C or PWM interface. It is compatible with 3.3V or 5V devices. GY-US12V2

A small module with Flash memory W25Q65 with a capacity of 64 Mbit (8 MB). It communicates via the SPI interface

Touch keyboard module with 8 buttons based on the TTP226 chip. It is equipped with a connector with derived signals and LEDs that indicate the state of each button

Camera module with OV7670 sensor with a resolution of 640x480 px (0.3 MPx). Communicates via the SCCB (Serial Camera Control Bus) interface

ToF distance sensor module based on the VL6180X system. It offers a range of 2 to 50 cm and communicates via the I2C interface

Module with EEPROM 24LC32 memory with a capacity of 32 kBit (4 kB). Equipped with a STEMMA QT connector, it communicates via the I2C interface. Adafruit 5146

Compact expansion with advanced data monitoring features, equipped with temperature, humidity, light sensors and RTC clock. With low power consumption, battery monitoring function and I2C protocol support, it is ideal for long-term battery-powered projects, offering precise measurements and efficient power management. Seeed Studio 114993446

Power switch that allows you to control your system\'s power on and off with simple button presses, with the ability to force shutdown after 10 seconds. It features a durable control circuit, LEDs, a self-resetting fuse, and offers low quiescent current, making it ideal for energy-efficient projects. SparkFun PRT-26993

Audio preamplifier based on the NE5532 chip. Powered with symmetrical DC voltage in the range from 9 to 15 V

Audio module that allows you to play sounds from a USB memory, microSD card, via Bluetooth or FM radio. It is equipped with a microphone, 3.5 mm audio jack and control buttons

Adapter designed for cameras with a parallel interface. It allows you to connect the camera with the USB Camera Shield module and connect it to a computer via a USB port. ArduCAM B0345

Adapter with two DIP8 sockets and one DIP8 male connector

Camera module 8 MPx with IMX219 sensor and lens with a viewing angle of 77°. To be used as a replacement on the RPI Camera Board V2. ArduCAM B0182

Stabilizer 79L15 -15 V / 100 mA, housing TO-92

2-channel stereo audio mixer module. It has four outputs, on which the summed signal from 2 inputs is available. It is powered with the voltage from 5 to 19 V