The M5Stack U040-B-V21 (PaHub v2.1) is a peripheral module used to split a single I2C bus into six independent communication channels. The solution enables simultaneous operation of multiple I2C devices, including modules with identical I2C addresses, by switching the active communication channel.
The design is based on the PCA9548AP and provides six Grove (HY2.0-4P) ports, allowing direct connection of M5Stack sensors and modules. A DIP switch enables configuration of the module’s I2C address in the range 0x70–0x77, which allows cascading multiple PaHub modules within a single system. The module is used in IoT projects, automation, measurement systems, and advanced prototypes that require a large number of I2C devices.
Manufacturer BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
Responsible person BTC Korporacja sp. z o. o. Lwowska 5 05-120 Legionowo Poland sprzedaz@kamami.pl 22 767 36 20
Compact module designed for M5StickC, enabling control using an analog joystick with a button function. It uses the STM32F030F4 microcontroller and communicates via the I2C interface, transmitting tilt and press data. Thanks to its ergonomic shape and easy integration, it is suitable for games, DIY projects and interactive control systems. M5Stack U073
The module is equipped with a button. It communicates via a digital interface and allows you to add simple controls to your M5Stack based project. M5Stack Button Unit
The module with 4 relays is designed for the M5Stack sets. It allows you to control devices with an operating voltage of up to 250 V AC and a current of up to 10 A or a voltage of 28 V DC and a current of 10 A. M5Stack U097
The M5Stack U041-B 1-6 I/O expansion module expands your system with six channels controlled via the I2C bus. Supporting GPIO, PWM, ADC, and servo control, it is ideal for robotics, IoT, and automation systems. M5Stack U041-B
Module of a small fan driven by a DC motor. The set includes two propellers with a diameter of 60 mm. M5Stack Fan Unit
Distance sensor module based on Time-of-Flight (ToF) technology with an I2C interface, enabling measurements in the range from 4 to 400 cm. M5Stack U172
ATOM Lite development kit complete with programmable AC/DC HUB switch module. M5Stack ATOM SWITCH
USB module based on MAX3421E wrap designed for M5Stack sets. It communicates with the evaluation kit via the SPI interface and allows the addition of a Host or USB device function. M5Stack M020
Ultrasonic distance sensor with an I2C interface for the M5Stack platform, using the RCWL-9620 chip to measure distance in the range from 2 cm to 450 cm. M5Stack U098-B1
Advanced communication module for DMX-512 systems, enabling reliable control of lighting and stage equipment via serial port. With XLR-3 and XLR-5 connectors and dual RS-485 interfaces with optical isolation, it provides flexible and secure connections to DMX devices. Support for Arduino and UIFlow platforms and stable power supply make the module ideal for applications in theater, outdoor lighting systems and stage automation. M5Stack M128
The Glass2 Unit by M5STACK is an advanced 1.51-inch transparent OLED display module, ideal for embedded displays, DIY toys, and user interfaces. With I2C support and compatibility with Arduino and UIFlow, it enables easy creation and development of various projects. M5Stack U158-B
A module with a joystick designed for M5Stack sets. Returns data from two axes and button state via the I2C interface. M5Stack U024-C
U160-V11 module designed for controlling DC motors using an H-bridge and I2C communication in M5Stack systems
The M5Stack U144 Key Unit is a versatile input device that combines a Blue mechanical switch with a programmable RGB LED. Its compact design and wide range of applications in various HMI scenarios make it an ideal choice for integration into systems and devices requiring intuitive user input and visual feedback. M5Stack U144
Module with color sensor TCS3472. The board is equipped with a Grove connector and communicates via the I2C interface. M5Stack U009
The module with SSR BT136S relay with a load of up to 2 A, designed for M5Stack sets. The board is equipped with a Grove connector and is controlled by a digital input. M5Stack U122
I2C bus splitter module based on the PCA9548AP, used for connecting multiple I2C devices to a single interface in M5Stack systems. M5Stack U040-B-V21