The HUB is a unit used to expand the GROVE ports over the M5Stack device. For example, if we wanted sensors with different I2C addresses or output to 3 devices at the same time. (M5Stack device usually can output one device at a time to a limited amount of grove ports) Note: The HUB is just a hardware expander, if you are looking for a hardware and software (standard protocol) expander like I2C, or Single-bus, please check PaHUB or PbHUB. If you are connecting two I2C slave devices onto HUB that share the same address, you will have a problem getting I2C data from both. The I2C addresses of the devices must be different, they can be changed manually by changing the resistor values. Features * GROVE Expander * Two Lego-compatible holes Specifications Resources Parameter Net weight 5g Gross weight 17g Product Size 32x24x12mm Package Size 67x53x12mm Resources * Product Wiki Package Contents * 1x HUB Unit * 1x Grove Cable https://elecena.pl/product/23605606/1-to-3-hub-expansion-unit 2023-06-06 https://elecena.pl/product/23605606/1-to-3-hub-expansion-unit 2023-12-27 https://elecena.pl/product/23605606/1-to-3-hub-expansion-unit 2024-09-18 https://elecena.pl/product/23605606/1-to-3-hub-expansion-unit 2024-11-29 https://elecena.pl/product/23605606/1-to-3-hub-expansion-unit 2024-11-30 https://elecena.pl/product/23605606/1-to-3-hub-expansion-unit 2025-11-28 https://elecena.pl/product/23605606/1-to-3-hub-expansion-unit 2025-11-29