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 10 kΩ rotary potentiometer for M5Stack sets. M5Stack U005
Module with a PIR motion sensor designed for M5Stack modules. It can detect movement up to 5 meters with a detection angle of 100 degrees. M5Stack U004
3-port Hub with Grove connectors for M5Stack sets. It allows you to connect several devices with Grove connectors to the evaluation kit. M5Stack HUB Unit
Module with heart rate and SpO2 sensor (oxygen saturation level) MAX30100 designed for M5Stack sets. M5Stack U029
Voltmeter module for M5Stack sets. It can measure DC voltage in the range from 0 to 36 V with an accuracy of approx. 0.5 mV. M5Stack U087
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Module with 6-axis IMU sensor MPU6886, which combines a 3-axis accelerometer and a 3-axis gyroscope. M5Stack U095
The CAN transmitter and receiver module is intended for M5Stack sets. It is based on an isolated CA-IS3050G transceiver system, which can provide differential data reception and transmission. M5Stack U085
Ammeter module designed for M5Stack sets. It can measure direct current in the range from 0 to 4 A with a resolution of approx. 0.15 mA. M5Stack U086
5-port Hub with Grove connectors for M5Stack sets. It allows you to connect several devices with Grove connectors to the evaluation kit. M5Stack Grove-T
Module with a black and white OLED display 1.3" with a resolution of 128x64 pixels. Designed for M5Stack sets. It communicates via the I2C interface. M5Stack U119
Module with a 433 MHz radio receiver for M5Stack sets. Based on the SYN531R chip, it has a built-in PCB antenna. M5Stack U113
A module with a 433 MHz radio transmitter for the M5Stack sets. Based on the SYN115 chip, it has a built-in PCB antenna. M5Stack U114
Capacitive soil moisture sensor with pump for M5Stack sets, equipped with holes compatible with LEGO. M5Stack U101
ToF VL53L0X distance sensor module designed for M5Stack sets. It allows you to measure distances up to 2 m and communicates via the I2C interface. M5Stack U072
The module with the transmitter and the IR receiver designed for the M5Stack sets. It is equipped with a Grove connector and communicates via a digital interface. M5Stack U002
Module with color sensor TCS3472. The board is equipped with a Grove connector and communicates via the I2C interface. M5Stack U009
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