STEMMA

HTU31D Temperature and Humidity board connected to an OLED FeatherWing  with STEMMA cable showing the temperature and humidity readings.

STEMMA is a plug-and-play board and sensor system that lets you quickly plug together various devices and accessories, without any soldering! STEMMA uses 3-pin cables for simple analog and digital devices, like relays and buttons. For more complex sensors and displays, we use a 4-wire I2C connection. For larger boards and devices we use a Grove-compatible connector, for smaller ones we use a Qwiic-compatible connector called STEMMA QT.

As all STEMMA sensors have level shifting and voltage regulation, you can use them safely with any 3 to 5V power and logic device - from microcontrollers like Arduino-compatibles, to full Linux single board computers like the Raspberry Pi. We even have USB to I2C adapters that let you connect STEMMA devices directly to a computer without any microcontroller programming required! Then, use our Arduino or CircuitPython/Python libraries and examples to easily get your electronics project working on any platform with STEMMA and STEMMA QT.


Adafruit LSM303AGR Accelerometer Magnetometer - STEMMA QT Qwiic

Product ID: 4413
$12.50
17 in stock

Adafruit LIS3DH Triple-Axis Accelerometer (+-2g/4g/8g/16g)

Product ID: 2809
$4.95
In stock

Adafruit ESP32-S2 Feather - 2 MB PSRAM and STEMMA QT / Qwiic

Product ID: 5000
$17.50
In stock

Adafruit MCP4728 Quad DAC with EEPROM - STEMMA QT / Qwiic

Product ID: 4470
$7.50
In stock

Black Adafruit Feather RP2040

Product ID: 4884
$11.95
In stock

INA219 High Side DC Current Sensor Breakout - 26V ±3.2A Max - STEMMA QT

Product ID: 904
$9.95
In stock

Adafruit QT Py - SAMD21 Dev Board with STEMMA QT

Product ID: 4600
$7.50
In stock

Adafruit TSL2591 High Dynamic Range Digital Light Sensor - STEMMA QT

Product ID: 1980
$6.95
In stock

Monochrome 1.3" 128x64 OLED graphic display - STEMMA QT / Qwiic

Product ID: 938
$19.95
In stock

Adafruit Monochrome 1.12" 128x128 OLED Graphic Display - STEMMA QT / Qwiic

Product ID: 5297
$17.50
In stock

JST PH 4-Pin to Male Header Cable - I2C STEMMA Cable - 200mm

Product ID: 3955
$1.50
In stock

Adafruit NeoPixel LED Strip with 3-pin JST PH Connector - 60 LED/meter / 0.5 Meter

Product ID: 3919
$12.50
In stock

Adafruit FeatherWing OLED - 128x64 OLED Add-on For Feather - STEMMA QT / Qwiic

Product ID: 4650
$14.95
In stock

Stacking M2.5 Hardware Kit for STEMMA QT and RP2040 Trinkey

Product ID: 5248
$1.50
In stock

Adafruit AHT20 - Temperature & Humidity Sensor Breakout Board - STEMMA QT / Qwiic

Product ID: 4566
$4.50
In stock

Adafruit MPU-6050 6-DoF Accel and Gyro Sensor - STEMMA QT Qwiic

Product ID: 3886
$6.95
In stock

Adafruit TDK InvenSense ICM-20948 9-DoF IMU (MPU-9250 Upgrade) - STEMMA QT / Qwiic

Product ID: 4554
$14.95
99 in stock

Adafruit STEMMA Soil Sensor - I2C Capacitive Moisture Sensor

Product ID: 4026
$7.50
In stock

Adafruit MCP2221A Breakout - General Purpose USB to GPIO ADC I2C - Stemma QT / Qwiic

Product ID: 4471
$6.50
In stock

Adafruit IS31FL3741 13x9 PWM RGB LED Matrix Driver - STEMMA QT / Qwiic

Product ID: 5201
$14.95
In stock

JST PH 3-pin Plug-Plug Cable - 100mm long

Product ID: 4336
$0.75
In stock

Adafruit BH1750 Light Sensor - STEMMA QT / Qwiic

Product ID: 4681
$4.50
In stock

Adafruit VL53L0X Time of Flight Distance Sensor - ~30 to 1000mm

Product ID: 3317
$14.95
In stock

Adafruit Sensirion SHT31-D - Temperature & Humidity Sensor

Product ID: 2857
$13.95
In stock

Adafruit DPS310 Precision Barometric Pressure / Altitude Sensor - STEMMA QT / Qwiic

Product ID: 4494
$6.95
In stock

Adafruit DS3502 I2C Digital 10K Potentiometer Breakout - STEMMA QT / Qwiic

Product ID: 4286
$4.95
In stock

Adafruit BME680 - Temperature, Humidity, Pressure and Gas Sensor - STEMMA QT

Product ID: 3660
$18.95
In stock

Adafruit STEMMA Speaker - Plug and Play Audio Amplifier

Product ID: 3885
$5.95
In stock

Adafruit VL53L1X Time of Flight Distance Sensor - ~30 to 4000mm - STEMMA QT / Qwiic

Product ID: 3967
$14.95
In stock

Adafruit I2C QT Rotary Encoder with NeoPixel - STEMMA QT / Qwiic

Product ID: 4991
$5.95
In stock

STEMMA JST PH 3-Pin to Male Header Cable - 200mm

Product ID: 3893
$1.25
In stock

Adafruit AW9523 GPIO Expander and LED Driver Breakout - STEMMA QT / Qwiic

Product ID: 4886
$4.95
65 in stock

JST PH 4-Pin to Female Socket Cable - I2C STEMMA Cable - 200mm

Product ID: 3950
$1.50
In stock

Adafruit 12-Key Capacitive Touch Sensor Breakout - MPR121 - STEMMA QT

Product ID: 1982
$7.95
In stock

Adafruit SCD-40 - True CO2, Temperature and Humidity Sensor - STEMMA QT / Qwiic

Product ID: 5187
$49.50
In stock

Adafruit BMP280 I2C or SPI Barometric Pressure & Altitude Sensor - STEMMA QT

Product ID: 2651
$9.95
In stock

Adafruit ST25DV16K I2C RFID EEPROM Breakout - STEMMA QT / Qwiic

Product ID: 4701
$3.95
In stock

STEMMA Cable - 150mm/6" Long 4 Pin JST-PH Cable–Female/Female

Product ID: 3568
$0.75
In stock

Adafruit PCF8591 Quad 8-bit ADC + 8-bit DAC - STEMMA QT / Qwiic

Product ID: 4648
$6.50
In stock

Adafruit NeoTrellis RGB Driver PCB for 4x4 Keypad

Product ID: 3954
$12.50
In stock

NeoKey 1x4 QT I2C - Four Mechanical Key Switches with NeoPixels - STEMMA QT / Qwiic

Product ID: 4980
$9.95
In stock

Adafruit Triple-axis Magnetometer - LIS3MDL - STEMMA QT / Qwiic

Product ID: 4479
$9.95
In stock

Adafruit VCNL4040 Proximity and Lux Sensor - STEMMA QT / Qwiic

Product ID: 4161
$5.95
In stock

Adafruit TLV493D Triple-Axis Magnetometer - STEMMA QT / Qwiic

Product ID: 4366
$5.95
In stock

Adafruit MCP9808 High Accuracy I2C Temperature Sensor Breakout - STEMMA QT / Qwiic

Product ID: 5027
$4.95
In stock

Adafruit ATtiny817 Breakout with seesaw - STEMMA QT / Qwiic

Product ID: 5233
$4.95
In stock

Adafruit BME688 - Temperature, Humidity, Pressure and Gas Sensor - STEMMA QT

Product ID: 5046
$19.95
In stock

Adafruit Trinkey QT2040 - RP2040 USB Key with Stemma QT

Product ID: 5056
$7.50
In stock

Adafruit SCD-41 - True CO2 Temperature and Humidity Sensor - STEMMA QT / Qwiic

Product ID: 5190
$59.50
14 in stock

Adafruit CYBERDECK HAT for Raspberry Pi 400

Product ID: 4863
$8.95
91 in stock

Adafruit Feather STM32F405 Express

Product ID: 4382
$39.95
In stock

Monochrome 0.96" 128x64 OLED Graphic Display - STEMMA QT

Product ID: 326
$17.50
In stock

Adafruit VL6180X Time of Flight Distance Ranging Sensor (VL6180) - STEMMA QT

Product ID: 3316
$13.95
In stock

JST SH 4-pin Right Angle Connector (10-pack) - Qwiic Compatible

Product ID: 4208
$3.95
In stock

JST PH 3-Pin Socket to Color Coded Cable - 200mm

Product ID: 4046
$0.95
In stock

STEMMA JST PH 3-Pin to Female Socket Cable - 200mm

Product ID: 3894
$1.25
In stock

Adafruit Mini PiTFT - 135x240 Color TFT Add-on for Raspberry Pi

Product ID: 4393
$14.95
In stock

Adafruit PMSA003I Air Quality Breakout - STEMMA QT / Qwiic

Product ID: 4632
$44.95
In stock

Adafruit PCT2075 Temperature Sensor - STEMMA QT / Qwiic

Product ID: 4369
$4.95
In stock

Adafruit CCS811 Air Quality Sensor Breakout - VOC and eCO2 - STEMMA QT / Qwiic

Product ID: 3566
$19.95
In stock

Adafruit SCD-30 - NDIR CO2 Temperature and Humidity Sensor - STEMMA QT / Qwiic

Product ID: 4867
$58.95
In stock

Adafruit LTC4311 I2C Extender / Active Terminator - STEMMA QT / Qwiic

Product ID: 4756
$7.50
In stock

Adafruit Matrix Portal - CircuitPython Powered Internet Display

Product ID: 4745
$24.95
In stock

Adafruit AS7341 10-Channel Light / Color Sensor Breakout - STEMMA QT / Qwiic

Product ID: 4698
$15.95
In stock

Adafruit STEMMA Non-Latching Mini Relay

Product ID: 4409
$5.95
In stock

Adafruit ISO1540 Bidirectional I2C Isolator - STEMMA QT / Qwiic

Product ID: 4903
$8.95
In stock

SparkFun STEMMA QT / Qwiic Breadboard Breakout Adapter

Product ID: 4527
$1.95
In stock

JST PH 3-pin Plug to Color Coded Alligator Clips Cable

Product ID: 4030
$1.95
In stock

SparkFun Qwiic or Stemma QT SHIM for Raspberry Pi / SBC

Product ID: 4463
$1.50
In stock

Adafruit APDS9960 Proximity, Light, RGB, and Gesture Sensor - STEMMA QT / Qwiic

Product ID: 3595
$7.50
In stock

Adafruit MLX90640 24x32 IR Thermal Camera Breakout - 110 Degree FoV

Product ID: 4469
$74.95
In stock

Adafruit BMP388 - Precision Barometric Pressure and Altimeter - STEMMA QT

Product ID: 3966
$9.95
In stock

Adafruit MagTag - 2.9" Grayscale E-Ink WiFi Display

Product ID: 4800
$34.95
3 in stock

Monochrome 0.91" 128x32 I2C OLED Display - STEMMA QT / Qwiic

Product ID: 4440
$12.50
In stock

Adafruit MLX90640 IR Thermal Camera Breakout - 55 Degree

Product ID: 4407
$74.95
In stock

Adafruit LED Glasses Front Panel - 116 RGB LEDs with I2C Driver - STEMMA QT / Qwiic

Product ID: 5210
$24.95
In stock

Circuit Playground TFT Gizmo - Bolt-on Display + Audio Amplifier

Product ID: 4367
$19.95
83 in stock

Adafruit Mini GPS PA1010D - UART and I2C - STEMMA QT

Product ID: 4415
$29.95
In stock

Adafruit EMC2101 I2C PC Fan Controller and Temperature Sensor - STEMMA QT / Qwiic

Product ID: 4808
$5.50
In stock

Adafruit CLUE - nRF52840 Express with Bluetooth LE

Product ID: 4500
$44.95
In stock

Adafruit SGP40 Air Quality Sensor Breakout - VOC Index - STEMMA QT / Qwiic

Product ID: 4829
$14.95
In stock

Adafruit Grayscale 1.5" 128x128 OLED Graphic Display - STEMMA QT / Qwiic

Product ID: 4741
$22.50
99 in stock

Adafruit MONSTER M4SK - DIY Electronic Eyes Mask

Product ID: 4343
$44.95
In stock

Adafruit TMP117 ±0.1°C High Accuracy I2C Temperature Sensor - STEMMA QT / Qwiic

Product ID: 4821
$11.50
In stock

Adafruit DS3231 Precision RTC - STEMMA QT

Product ID: 5188
$13.95
In stock

Adafruit Mini PiTFT 1.3" - 240x240 TFT Add-on for Raspberry Pi

Product ID: 4484
$14.95
In stock

Adafruit LTR390 UV Light Sensor - STEMMA QT / Qwiic

Product ID: 4831
$4.95
In stock

2.0mm Pitch 3-pin Cable Matching Pair - JST PH Compatible

Product ID: 5087
$0.95
In stock

Adafruit Infineon Trust M Breakout Board - STEMMA QT / Qwiic

Product ID: 4351
$4.95
48 in stock

Adafruit EdgeBadge - TensorFlow Lite for Microcontrollers

Product ID: 4400
$35.95
84 in stock

JST PH 2.0mm Pitch Connector Kit - 220 Piece Kit

Product ID: 4422
$8.95
In stock

JST PH 4-Pin Socket to Color Coded Cable - 200mm

Product ID: 4045
$0.95
In stock

Adafruit PCF8523 Real Time Clock Breakout Board - STEMMA QT / Qwiic

Product ID: 5189
$4.95
In stock

Adafruit HTU31 Temperature & Humidity Sensor Breakout Board - STEMMA QT / Qwiic

Product ID: 4832
$5.95
In stock

Adafruit Metro ESP32-S2

Product ID: 4775
$19.95
In stock

SparkFun Qwiic Multiport

Product ID: 4861
$2.95
In stock

JST SH 4-pin Vertical Connector (10-pack) - Qwiic Compatible

Product ID: 4328
$3.95
In stock

Adafruit Wii Nunchuck Breakout Adapter - Qwiic / STEMMA QT

Product ID: 4836
$2.95
In stock

Adafruit PyBadge Starter Kit

Product ID: 4623
$39.95
90 in stock

Adafruit PyBadge for MakeCode Arcade, CircuitPython, or Arduino

Product ID: 4200
$34.95
In stock

Adafruit PyBadge LC - MakeCode Arcade, CircuitPython, or Arduino - Low Cost Version

Product ID: 3939
$24.95
In stock

Adafruit MCP9601 (MCP96L01) I2C Thermocouple Amplifier - STEMMA QT / Qwiic

Product ID: 5165
$14.95
In stock

2.0mm Pitch 4-pin Cable Matching Pair - JST PH Compatible

Product ID: 5088
$0.95
In stock

Adafruit MS8607 Pressure Humidity Temperature PHT Sensor - STEMMA QT / Qwiic

Product ID: 4716
$14.95
87 in stock

Adafruit ICM-20649 Wide Range ±30g ±4000dps 6-DoF IMU - STEMMA QT / Qwiic

Product ID: 4464
$14.95
51 in stock

JST PH 4-pin Vertical Connector (10-pack) - STEMMA

Product ID: 4390
$3.50
41 in stock

Adafruit LPS22 Pressure Sensor - STEMMA QT / Qwiic - LPS22HB

Product ID: 4633
$6.95
In stock

Adafruit LPS33HW Water Resistant Pressure Sensor - STEMMA QT

Product ID: 4414
$12.50
In stock

SparkFun STEMMA QT / Qwiic Mux Breakout - 8 Channel

Product ID: 4704
$11.95
73 in stock

Adafruit TCA4307 Hot-Swap I2C Buffer with Stuck Bus Recovery - STEMMA QT / Qwiic

Product ID: 5159
$4.95
In stock

Adafruit 24LC32 I2C EEPROM Breakout - 32Kbit / 4 KB - Stemma QT

Product ID: 5146
$3.95
In stock

SparkFun Qwiic / Stemma QT FeatherWing (Shield for Thing Plus)

Product ID: 4515
$4.95
In stock

Grove Shield FeatherWing for Particle Mesh and all Feathers

Product ID: 4309
$5.95
In stock

JST PH 4-pin Horizontal Connector (10-pack) - STEMMA

Product ID: 4392
$3.50
90 in stock

Adafruit FunHouse - WiFi Home Automation Development Board

Product ID: 4985
$34.95
In stock

Micro Servo with 3-pin JST Cable - STEMMA Connector Compatible

Product ID: 4326
$5.95
In stock

SparkFun Qwiic pHAT v2.0 for Raspberry Pi - STEMMA QT / Qwiic

Product ID: 5142
$7.95
In stock

STEMMA Wired Tactile Push-Button Pack - 5 Color Pack

Product ID: 4431
$7.50
In stock

JST PH 4-pin Plug to Color Coded Alligator Clips Cable

Product ID: 4029
$2.50
In stock

SparkFun Qwiic / STEMMA QT HAT for Raspberry Pi

Product ID: 4688
$7.95
55 in stock

STEMMA Wired Potentiometer Breakout Board - 10K ohm Linear

Product ID: 4493
$3.95
In stock

Adafruit TMP235 - Plug-and-Play STEMMA Analog Temperature Sensor - TMP235

Product ID: 4686
$2.50
52 in stock

Adafruit LPS25 Pressure Sensor - STEMMA QT / Qwiic - LPS25HB

Product ID: 4530
$9.95
36 in stock

Adafruit LIS331 Triple-Axis Wide-Range ±24g Accelerometer - STEMMA QT / Qwiic

Product ID: 4626
$10.95
In stock

JST PH 3-pin Vertical Connector (10-pack) - STEMMA

Product ID: 4389
$3.50
47 in stock

Adafruit DS1841 I2C Digital 10K Potentiometer Breakout - STEMMA QT / Qwiic

Product ID: 4570
$5.95
In stock

Circuit Playground 200x200 Tri-Color E-Ink Gizmo - E-Ink Display + Audio Amplifier

Product ID: 4869
$21.95
4 in stock

Adafruit H3LIS331 Ultra High Range Triple-Axis Accelerometer - STEMMA QT / Qwiic

Product ID: 4627
$24.95
In stock

I2CMini by Excamera Labs

Product ID: 4970
$14.95
67 in stock

Adafruit PyBadge Low Cost Starter Kit

Product ID: 4624
$32.50
90 in stock

Adafruit NeoTrellis M4 Mainboard - featuring SAMD51

Product ID: 3938
$39.95
In stock

Adafruit BMP390 - Precision Barometric Pressure and Altimeter - STEMMA QT / Qwiic

Product ID: 4816
$10.95
Out of stock

Adafruit 9-DOF Orientation IMU Fusion Breakout - BNO085 (BNO080) - STEMMA QT / Qwiic

Product ID: 4754
$19.95
Out of stock

Adafruit LSM6DS33 + LIS3MDL - 9 DoF IMU with Accel / Gyro / Mag - STEMMA QT Qwiic

Product ID: 4485
$14.95
Out of stock

Pink Adafruit Feather RP2040

Product ID: 5299

Adafruit LSM6DSO32 6-DoF Accelerometer and Gyroscope - STEMMA QT / Qwiic

Product ID: 4692
$11.95
Out of stock

Adafruit ATECC608 Breakout Board - STEMMA QT / Qwiic

Product ID: 4314
$4.95
Out of stock

Adafruit HTS221 - Temperature & Humidity Sensor Breakout Board - STEMMA QT / Qwiic

Product ID: 4535
$9.95
Out of stock

Adafruit 9-DOF Absolute Orientation IMU Fusion Breakout - BNO055 - STEMMA QT / Qwiic

Product ID: 4646
$19.95
Out of stock

Adafruit LSM6DSOX + LIS3MDL - Precision 9 DoF IMU - STEMMA QT / Qwiic

Product ID: 4517
$14.95
Out of stock

Adafruit LSM6DSOX 6 DoF Accelerometer and Gyroscope - STEMMA QT / Qwiic

Product ID: 4438
$11.95
Out of stock

Adafruit LSM6DS33 6-DoF Accel + Gyro IMU - STEMMA QT / Qwiic

Product ID: 4480
$9.95
Out of stock

Adafruit Sensirion SHT40 Temperature & Humidity Sensor - STEMMA QT / Qwiic

Product ID: 4885
$5.95
Out of stock

Adafruit ISM330DHCX + LIS3MDL FeatherWing - High Precision 9-DoF IMU

Product ID: 4569
$17.50
Out of stock

Adafruit NeoSlider I2C QT Slide Potentiometer with 4 NeoPixels - STEMMA QT / Qwiic

Product ID: 5295
$9.95
Out of stock

Adafruit HalloWing M4 Express - ORANGE HALLOWEEN EDITION!

Product ID: 4300
$39.95
Out of stock

Adafruit LC709203F LiPoly / LiIon Fuel Gauge and Battery Monitor - STEMMA JST PH & QT / Qwiic

Product ID: 4712
$6.95
Out of stock

Adafruit QT Py RP2040

Product ID: 4900
$9.95
Out of stock

Adafruit Si7021 Temperature & Humidity Sensor Breakout Board - STEMMA QT

Product ID: 3251
$9.95
Out of stock

Adafruit CYBERDECK Bonnet for Raspberry Pi 400

Product ID: 4862
$6.95
Out of stock

JST PH 3-pin Horizontal Connector (10-pack) - STEMMA

Product ID: 4391
$3.50
Out of stock

Binho Qwiic / Stemma QT Interface Board

Product ID: 4462
$7.95
Out of stock

Black Lives Matter Education & Workshop Kit

Product ID: 4703

Adafruit LSM6DSOX + LIS3MDL FeatherWing - Precision 9-DoF IMU

Product ID: 4565
$14.95
Out of stock

Adafruit 9-DOF LSM9DS1 Breakout Board - STEMMA QT / Qwiic

Product ID: 4634
$12.50
Out of stock

Adafruit Triple-axis Magnetometer - LIS2MDL - STEMMA QT / Qwiic

Product ID: 4488
$5.95
Out of stock

Adafruit Metro M7 with AirLift - Featuring NXP iMX RT1011

Product ID: 4950
Coming soon

JST-SH 4-pin STEMMA QT / Qwiic Cables in Various Lengths

Product ID: 4912
In stock

Adafruit ISM330DHCX - 6 DoF IMU - Accelerometer and Gyroscope - STEMMA QT / Qwiic

Product ID: 4502
$14.95
Out of stock

Adafruit MSA301 Triple Axis Accelerometer - STEMMA QT / Qwiic

Product ID: 4344
Discontinued

Grove Shield FeatherWing - Wio Lite

Product ID: 4357
Discontinued

Circuit Playground 152x152 Tri-Color E-Ink Gizmo - E-Ink Display + Audio Amplifier

Product ID: 4428
Discontinued

Adafruit STEMMA - TSL2561 Digital Lux / Light Sensor

Product ID: 3611
Discontinued