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Small green circuit board with two white JST SH connectors and one black Grove connector

Seeed Studio

Seeed Studio Grove Qwiic Hub transducer 25.4x17.8mm 3.3/5V

SKU CH-AS3A-ME1GQ

Connects Grove, Qwiic and STEMMA QT I²C modules on one bus with built-in 3.3 V/5 V level shifting

  • Product typeSensors
  • Connect Qwiic and STEMMA QT modules to Grove controllers
  • Use Grove sensors on Qwiic and STEMMA QT boards
  • Cascade multiple I2C devices on one shared bus
  • Built-in level shifting supports 3.3V and 5V power
  • Compact 25.4x17.8mm board fits tight spaces

Grove–Qwiic Bridge

This adapter links a Grove controller to Qwiic or STEMMA QT I²C modules, or connects Grove sensors to a Qwiic host. It measures 25.4 × 17.8 mm and operates from either a 3.3 V or 5 V supply. Two JST SH 1.0 mm connectors provide the Qwiic/STEMMA QT ports, while on-board level shifting handles the voltage translation automatically.

Suits mixed-ecosystem prototypes

Makers who already own Grove boards and want to add Sparkfun or Adafruit I²C sensors can do so without rewiring. Builders working exclusively within one connector family — only Grove, only Qwiic, or only STEMMA QT — gain no extra ports from this hub and should use a native splitter instead.

Handles several I²C devices on one bus

Up to 3.5 MHz clock rate lets the hub pass standard- and fast-mode traffic for multiple sensors chained together. Designs that need higher bus speeds, more than two Qwiic ports, or isolation between device groups will exceed what this board provides.

How it compares

Measured against everything we stock in Sensors, Transducers & Thermometers, at today’s prices. Recalculated every night.

Price $14.99
Cheaper than about 85% of the 255 comparable items (median $39.99).

Specifications

Product
Product typeSensors

Questions about this item

What connectors must my existing controller board provide to plug this hub in?

Your controller needs either a Grove port or a JST SH 1.0 mm Qwiic/STEMMA QT port; the hub bridges both so you can attach modules of either type.

Will the hub work with 3.3 V I2C devices I already own?

Yes, the built-in level shifting supports 3.3 V and 5 V supply, so older 3.3 V modules share the same bus safely.

How can I verify the hub is passing data after wiring it up?

Run an I2C bus scan from your controller; every connected module should appear at its address up to the 3.5 MHz communication limit.

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