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
Module with a color LCD 1.14" display with a resolution of 135x240 px. Designed for M5Stack sets. It communicates via the I2C interface. M5Stack U120
M5Stack series kit equipped with ESP32 and camera with OV3660 sensor. It has a built-in W5500 chip and can be powered by the RJ45 (PoE) connector. M5Stack U121-B-V11
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
The module with a 10 kΩ slide potentiometer and a color LED indicator, designed for the M5Stack sets. M5Stack U123
DC-DC Step-Down Converter ME3116AM6G with an output voltage of 5 V, input voltage from 6 to 24 V and a maximum output current of 1 A. Dedicated to the M5Stack modules. M5Stack U125
Module with real time clock (RTC) HYM8563 designed for M5Stack sets. It is equipped with a Grove connector and communicates via the I2C interface. M5Stack U126
The module with a gesture detection sensor PAJ7620U2 designed for M5Stack sets. He can recognize 9 gestures and communicates via the I2C interface. M5Stack U127
Module with a passive buzzer designed for M5Stack sets. It is equipped with a Grove connector and is controlled by a square signal. M5Stack U132
Module with a light intensity sensor BH1750FVI dedicated to the M5StickC sets. It communicates via the I2C interface. M5Stack U134
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A module with a rotary encoder and RGB LED lighting for M5Stack sets. It communicates via the I2C interface. M5Stack U135
The module with 2 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 8 A or a voltage of 28 V DC and a current of 8 A. M5Stack U131
Ethernet MQTT communication module designed for M5Stack sets. It communicates via the UART interface using AT commands. M5Stack U129
Isolated UART-RS485 converter designed for M5Stack sets. It allows communication within an industrial serial interface. M5Stack U094
The module with the relay is designed for the M5Stack sets. It allows you to control devices with a working voltage of up to 220 V AC and a current of up to 3 A or a voltage of 30 V DC and an intensity of 3 A. M5Stack U023
A comprehensive development base, ideal for IoT projects. It offers a DC-DC circuit converting voltage from 9 from 24 V to 5 V, Grove expansion ports and an area with prototype holes with a 2.54 mm pitch. M5Stack K026-B
Rotary encoder module dedicated to M5StickC/C-CPlus. It integrates AB rotary encoder with push button function and is powered by built-in battery. M5stack U157
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