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  1. Parts
  2. /Interfaces
  3. /Breakout Boards

SparkFun STEMMA QT / Qwiic Breadboard Breakout Adapter

OverviewPinoutWiringRelated groups
SparkFun STEMMA QT / Qwiic Breadboard Breakout Adapter — Adafruit — 4527

The SparkFun Qwiic Adapter can make any old I2C board or sensor a STEMMA QT / Qwiic-enabled one. This adapter breaks out the I2C pins from the JST SH connectors to pins that you can easily solder with your favorite I2C-enabled device.

Offers

  • Adafruit$1.95

Offers

  • Adafruit$1.95

Pinout

  • SCL

    I2C clock broken out from the JST SH Qwiic / STEMMA QT connectors to plated through holes; Adafruit product page states the board breaks out I2C pins and four through holes for SCL, SDA, 3.3V and GND.

    Type · signalVoltage · 3.3 V I2C bus context from the same 3.3V breakout power rail; no separate level shifting claimed.
  • SDA

    I2C data broken out from the JST SH Qwiic / STEMMA QT connectors to plated through holes; same I2C bus as the two JST SH ports.

    Type · signalVoltage · 3.3 V I2C bus context from the same 3.3V breakout power rail; no separate level shifting claimed.
  • 3.3V

    3.3 V power rail broken out from the Qwiic / STEMMA QT connector bus to a plated through hole.

    Type · powerVoltage · 3.3 V
  • GND

    Ground rail broken out from the Qwiic / STEMMA QT connector bus to a plated through hole.

    Type · groundVoltage · 0 V reference

Start wiring

I2C · 3.3 V I2C bus context from the same 3.3V breakout power rail; no separate level shifting claimed. · 3.3 V

Confirm the data interface matches your host board.

Module pins: 3.3V, GND, SCL, SDA. Schematik maps them to your board in the app.

Related groups

4 groups
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9V to Barrel Jack Adapter visual preview
SparkFun 16x2 SerLCD - RGB Backlight (Qwiic) visual preview
MicroUSB Plug to 5.5/2.1mm DC Barrel Jack Adapter | Kiwi Electronics visual preview

Connectors

Sort passive connector adapters from Qwiic boards, LCD modules and microSD card adapters before assuming anything with the right plug will substitute safely.

Connectors & cables · Connectors · 28 parts

RGB backlight positive LCD 16x2 visual preview
SparkFun 16x2 SerLCD - RGB Backlight (Qwiic) visual preview
I2C 20x4 Arduino LCD Display Module visual preview
Gravity: I2C 16x2 Arduino LCD with RGB Backlight Display V2.0 visual preview

Displays

Character LCDs, SPI TFTs, e-paper modules and larger capacitive-touch TFT panels solve different display jobs. Treat display class, interface, controller, resolution, touch, refresh behaviour, storage, voltage and mounting as separate swap checks.

Displays · TFT & LCD displays · 35 parts

MQ-2 Gas Sensor visual preview
MQ-3 Gas Sensor visual preview
MQ-135 Gas Sensor visual preview
Grove - Air quality sensor visual preview

Air quality

Choose between MQ gas sensors, VOC/eCO2 indoor-air sensors, true CO2 modules and particulate sensors without treating every air-quality breakout as the same detector.

Sensors · Gas & air-quality sensors · 31 parts

Arduino Uno visual preview
Raspberry Pi Pico visual preview
Adafruit Feather nRF52840 Express visual preview
Pan-Tilt HAT kit visual preview

MCUs and boards

ESP32, Arduino Uno, Raspberry Pi Pico, and compatible add-on boards for running builds.

Boards · Microcontroller boards · 29 parts

Parts tray full · 5 max · remove a part to add another
PinPositionTypeFunctionVoltage
SCLsignalI2C clock broken out from the JST SH Qwiic / STEMMA QT connectors to plated through holes; Adafruit product page states the board breaks out I2C pins and four through holes for SCL, SDA, 3.3V and GND.3.3 V I2C bus context from the same 3.3V breakout power rail; no separate level shifting claimed.
SDAsignalI2C data broken out from the JST SH Qwiic / STEMMA QT connectors to plated through holes; same I2C bus as the two JST SH ports.3.3 V I2C bus context from the same 3.3V breakout power rail; no separate level shifting claimed.
3.3Vpower3.3 V power rail broken out from the Qwiic / STEMMA QT connector bus to a plated through hole.3.3 V
GNDgroundGround rail broken out from the Qwiic / STEMMA QT connector bus to a plated through hole.0 V reference