The Adafruit STEMMA QT is an ecosystem of I2C sensors, actuators, shields and cables that make prototyping faster and less prone to error. All STEMMA QT-enabled boards use a common 1mm pitch, 4-pin JST connector. This reduces the amount of required PCB space, and polarized connections mean you can’t hook it up wrong.
STEMMA QT is cross-platform and is found on Adafruit accessories for the Arduino, BBC micro:bit, and Raspberry Pi along with many of Adafruit’s own microcontrollers. It is also directly compatible with SparkFun’s Qwiic System.
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Qwiic / STEMMA QT Cable – 50mm
$2.95Light PacketThis Qwiic / STEMMA QT cable measures 50mm long and is ideal for areas where devices are close to one another. -
Qwiic / STEMMA QT Cable – 100mm
$2.95Light PacketThis Qwiic / STEMMA QT cable measures 100mm long and is ideal for areas where devices are close to one another. -
Flexible Qwiic Cable – Breadboard Jumper 4 Pin
$3.95Light PacketThis 4-wire cable is a little over 150mm / 6" long and fitted with JST-SH female 4-pin connectors on one end and premium Dupont male… -
Flexible Qwiic Cable – Female Jumper 4 Pin
$3.95Light PacketThis 4-wire cable is a little over 150mm / 6″ long and fitted with a JST-SH female 4-pin (Qwiic) connector on one end. The Qwiic… -
Qwiic / STEMMA QT Cable – 500mm
$4.50Light PacketThis Qwiic / STEMMA QT cable measures 500mm long and is ideal for areas where devices are further apart. -
JST SH 4-pin Cable with Alligator Clips – STEMMA QT / Qwiic
$5.95Light PacketThis unique cable has a JST SH 4-pin on one side and alligator clips on the other. Perfect for working with Qwiic / STEMMA QT… -
Adafruit ST25DV16K I2C RFID EEPROM Breakout
$6.95Light PacketThis RFID tag is really unique: it works with mobile phones just like other RFID tags, but you can reprogram it over I2C. The tag… -
Adafruit PCF8523 RTC Assembled Breakout Board
Original price was: $8.95.$7.75Current price is: $7.75.Light PacketSaleThis is a simple little real time clock (RTC) breakout board based on the PCF8523 chipset. The breakout allows your microcontroller project to keep track… -
MCP4725 Breakout Board – 12-Bit DAC
$7.95Light PacketThis Adafruit breakout board features the easy-to-use MCP4725DAC which can output a single 12-bit analog signal. This board is controlled by I2C and features both… -
MCP9808 High Accuracy Temperature Sensor
$7.95Light PacketWith a typical accuracy of ±0.25°C over the sensor's -40°C to +125°C range and a resolution of 0.0625°C the MXP9808 is extremely precise! The board… -
Adafruit LIS3DH Triple-Axis Accelerometer
$7.95Light PacketThe Adafruit LIS3DH breakout is a feature filled, low power, accelerometer that is configurable to several ranges of sensitivity. This accelerometer chipset is commonly found… -
Qwiic / STEMMA QT Port Expander
$7.95Light PacketThe Qwiic / STEMMA QT Port Expander is a handy add on board that allows multiple SparkFun Qwiic or Adafruit STEMMA QT breakout boards and… -
Adafruit BH1750 Light Sensor – STEMMA QT / Qwiic
$8.95Light PacketThe Adafruit BH1750 breakout board is an easy to use light sensor able to provide 16-bit measurements. The board is Qwiic / STEMMA QT compatible and… -
SparkFun Temperature Sensor – STTS22H (Qwiic)
$11.95Light PacketThe SparkFun STTS22H Temperature Sensor is a Qwiic-enabled breakout board based on the ultralow-power, high-accuracy, STTS22H digital temperature sensor. -
SparkFun Digital Temperature Sensor Breakout – AS6212
$13.95Light PacketThis SparkFun Qwiic Digital Temperature Sensor Breakout provides a combination of high temperature accuracy with excellent low power consumption using the AS6212 digital temperature sensor… -
ADS1015 12-Bit ADC
$14.95Light PacketThe ADS1015 is a versatile 4 channel 12 bit Analog to Digital converter. This breakout adds all the necessary components to make it work along… -
i2c / SPI Character LCD Backpack
$15.95Light PacketAll Character LCDs are common and easy to use, but when connecting them to your microcontroller they can use up most of your digital pins!… -
Adafruit QT Py RP2040
$15.95Light PacketThe Adafruit QT Py RP2040 is about the smallest RP2040 based microcontroller out there! This tiny board features the RP2040 32-bit Cortex M0+ dual core… -
Adafruit LSM6DS3TR-C 6 DoF
$15.95Light PacketAdd motion and orientation sensing to your Arduino project with this affordable 6 Degree of Freedom (6-DoF) sensor with sensors from ST. The board includes an ST LSM6DS3TR-C,… -
ESP8266 1 Channel Relay Board
$16.95The ESP8266 1 Channel Relay Board is a ready-to-program IoT relay module featuring the ESP8266 SMT module (ESP-12E), a high quality 10A relay, a power… -
HTU21D-F Temperature & Humidity Breakout Board
$18.95Light PacketThe HTU21D-F is a small temperature and humidity sensor. Because It is so small, Adafruit has mounted it on this handy breakout board with all… -
7-Segment Display + I2C Backpack – Blue
$19.95This Qwiic / STEMMA QT enabled 7 Segment Display + I2C Backpack makes driving a 7-Segment display as easy as possible. The kit includes the…