Module with a logarithmic digital potentiometer based on the DS1841 chip. Equipped with a STEMMA QT connector, it communicates via the I2C interface. Adafruit 4570

8-port I2C splitter module. The board is equipped with a Gravity connector and allows you to connect additional I2C devices. DFRobot DFR0759

Module with the OPTIGA TRUST M SLS32AIA cryptographic chip. Equipped with a STEMMA QT connector, it communicates via the I2C interface. Adafruit 4351

Real time clock (RTC) module PCF8523. It uses the STEMMA QT connector and communicates via the I2C interface. Adafruit 5189

A module with an NFC PN532 transceiver, which supports proximity communication at the frequency of 13.56 MHz. The board is equipped with a Grove connector and communicates via the I2C or UART interface. Seeed Studio 113020006

Module with a button, LED diode and a red cap. DFRobot DFR0029-R

The module allows the detection of volatile organic compounds (VOC) in the air, based on Winsen\'s WSP2110 system. Allows for detection in the air; formaldehyde (HCHO), methane, benzene, toluene, alcohol, etc. The sensor output is an analog signal. Seeed studio 101020001

High-speed communication module powered by ADM582E. By communicating with the device via UART, users can take advantage of the RS485 communication protocol with speeds up to 16 Mbps. 410-310

Clock signal generator with a frequency of 8 kHz to 160 MHz based on the SI5351A integrated circuit. Communication with the module takes place via the I2C bus. Adafruit 5640

A compact pressure and temperature module ideal for weather stations, drones, and IoT projects. It offers a measurement range of 300–1100 hPa with ±3 Pa accuracy and temperature measurement with ±1°C precision. With a built-in 3.3V regulator and logic level converter, it works with both 3V and 5V microcontrollers. STEMMA QT/Qwiic connectors make it easy to quickly connect and daisy-chain multiple sensors in a single system. Adafruit 6420

SEN0017

Module with 6-axis IMU sensor that allows you to measure acceleration and rotational speed in the range up to ±16g and ±2000dps. Equipped with a STEMMA QT connector, it communicates via I2C or SPI. Adafruit 4503

Module with a monitor of the operation of LiPo/Li-Ion batteries based on the MAX17048 system. It allows you to measure the voltage and state of charge of the battery. Adafruit 5580

Module with an 8-channel ADC converter with 8-bit resolution. It uses the ADS7830 chip and is equipped with a STEMMA QT connector, thanks to which it communicates via the I2C interface. Adafruit 5836

The Gravity Occupancy Sensor uses 24 GHz FMCW radar technology, enabling precise presence detection at a distance of up to 8 meters and movement and distance measurement up to 12 meters. Thanks to its high resistance to environmental interference, it works reliably regardless of light, temperature or dust, effectively detecting both static and dynamic objects. Compatibility with Arduino, ESP32, Raspberry Pi and a simple Gravity interface make it an ideal solution for intelligent lighting, building automation and security systems. DFRobot SEN0610

I2C-CAN converter using the MCP2551 and MCP2515 systems and the ATmega168PA microcontroller. The module uses the I2C bus and the Grove connector for communication. Seeed Studio 113020111

The extension cables let you locate Pmod 6" away from its host board, or use your 12-pin Pmod on a system board with only two 6-pin Pmod headers available. 240-021-2

Moduł z nadajnikiem-odbiornikiem dedykowany do komunikacji przez światłowód. Pozwala przesyłać dane na odległość do 10 km przy pomocy protokołu UART. DFRobot TEL0153

Flexible 4-core cable, 50 mm long, terminated on both sides with a Qwiic plug. Sparkfun PRT-17260