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Qwiic is SparkFun’s 4-pin JST-SH (1.0mm) I2C plug-and-play ecosystem (also compatible with STEMMA QT). Here are the most useful picks depending on what you’re trying to do:
Get started (cables/adapters)
- If you want a variety of cable lengths in one go: SparkFun Qwiic Cable Kit ($29.75)
- To convert a classic I2C breakout to Qwiic: SparkFun Qwiic Adapter ($3.25)
Add more Qwiic ports (hubs/splitters)
- Simple way to add extra ports to a single-connector board: SparkFun Qwiic MultiPort ($5.05)
- Star-style hub with 4 extra Qwiic ports: Qwiic MultiStar Constellation Ornament ($11.05)
- Compact splitter for up to 5 ports (Qwiic/STEMMA QT): Adafruit Qwiic / Stemma QT 5 Port Hub ($5.30)
Bridge to other connector ecosystems
- Qwiic to Grove adapter cable: Qwiic Cable - Grove Adapter (150mm) ($4.95)
- Grove/STEMMA to Qwiic/STEMMA QT JST-SH adapter: 4-pin JST PH to JST SH Cable - STEMMA / Grove to QT / Qwiic - 200mm long ($2.15)
- Another Grove-to-Qwiic cable option: Grove to STEMMA QT / Qwiic / JST SH Cable - 100mm long ($4.15)
- Longer Qwiic-to-STEMMA cable: Flexible Qwiic to STEMMA Cable - 500mm ($7.10)
Add Qwiic to Raspberry Pi / Arduino / Feather-style boards
- Raspberry Pi add-on with Qwiic ports: SparkFun Qwiic HAT for Raspberry Pi ($13.35)
- Minimal Pi option to add a single connector: SparkFun Qwiic SHIM for Raspberry Pi ($3.55)
- Arduino shield for Qwiic I2C: SparkFun Qwiic Shield for Arduino ($16.50)
- Feather/Thing Plus connector add-on: SparkFun Qwiic / Stemma QT FeatherWing (Shield for Thing Plus) ($14.15)
- Pi starter bundle: SparkFun Qwiic Kit for Raspberry Pi ($121.35)
Popular Qwiic devices (examples)
- Sensor for gardening/projects: Qwiic Soil Moisture Sensor ($12.90)
- Easy numeric/text output: Qwiic Alphanumeric Display - Blue ($20.20)
- Sharp 128x128 OLED UI: Qwiic OLED Display - 1.5in 128x128 ($58.90)
- Environmental sensing: SparkFun Atmospheric Sensor Breakout - BME280 (Qwiic) ($34.25) or SparkFun Environmental Sensor Breakout - BME680 (Qwiic) ($46.50)
- Advanced colour/light measurement: AS7343 Qwiic Spectral Sensor ($43.20)
Control / logging / input over I2C
- Switch loads via I2C relay: Qwiic Relay - 1x1A DPDT ($18.35)
- Log data to microSD over I2C: SparkFun Qwiic OpenLog ($42.30)
- Rotary encoder input with RGB: SparkFun Qwiic Twist - RGB Rotary Encoder Breakout ($51.60)
- I2C motor control: SparkFun Qwiic Motor Driver ($48.10)
What are you looking for in the Qwiic ecosystem?
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Showing 21-40 of 100 products
RFID Qwiic Kit with ID-12LA 125kHz Reader
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This kit gives you the core hardware needed to start reading 125kHz RFID tags over I2C, without hunting for a separate reader module, antenna or wiring up a complex circuit. The box includes a SparkFun RFID Qwiic Reader, an ID-12LA RFID reader module, two 125kHz RFID cards and a 100mm Qwiic cable...
u-blox ZED-X20P Allband GNSS RTK Breakout (Qwiic)
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This GNSS RTK breakout brings the u-blox X20 engine to a maker-friendly board for high-precision positioning projects. It is designed around the ZED-X20P all-band receiver and can process signals from GPS, Galileo, BeiDou, QZSS and NavIC across all GNSS frequency bands, including L-band.The board...
NEO-D9S GNSS Correction Data Receiver with Qwiic
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This NEO-D9S breakout is an L-Band satellite correction data receiver designed to feed correction streams to a compatible multi-band, high-precision GNSS receiver such as the u-blox ZED-F9P. With a clear view of the sky, especially to the south, it can decode L-Band correction broadcasts and help...
ACS37800 Qwiic Power Meter
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Built around the Allegro ACS37800, this Qwiic power meter lets your project monitor voltage and current at the same time over I2C. It is designed for higher-demand loads such as 3D printers, UAVs and solar panels, with voltage monitoring up to 60VDC and current sensing up to 30A.The ACS37800 uses...
Micro Proximity Sensor - 20 cm VCNL4040 (Qwiic)
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Built around the VCNL4040, this tiny Qwiic Micro breakout provides short-range presence detection for projects where space and weight are tight. It is designed for qualitative sensing: detecting whether an object is present within range and whether it is getting closer or moving farther away, rat...
STC31 CO2 Sensor (Qwiic)
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Measure high concentrations of carbon dioxide with a Qwiic breakout built around Sensirion’s STC31 sensor. It is designed for CO2 measurements up to 100% volume, using a thermal conductivity measurement principle and Sensirion CMOSens® technology for repeatable, stable readings.The board also inc...
RFID Qwiic Reader for ID Innovations Modules
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This Qwiic RFID reader breakout makes it much easier to add low-frequency 125kHz RFID scanning to a project. It is designed for ID Innovations ID-3LA, ID-12LA and ID-20LA reader modules, converting the module output into simple I2C commands so your main microcontroller does not need to handle ser...
Qwiic MCP4725 12-Bit DAC Breakout
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Generate a real analogue output from your microcontroller instead of relying on PWM. This MCP4725 breakout is a 12-bit Digital-to-Analogue Converter (DAC) that outputs precise voltage levels over an I2C/Qwiic connection.It is useful for projects that need smoother control signals, such as sound g...
WM8960 Audio Codec Breakout with Headers (Qwiic)
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This WM8960 breakout is a low-power stereo audio codec board for adding audio input and output to digital projects. The WM8960 works as both a stereo audio ADC and DAC, using I2S for audio data while allowing settings such as I2S configuration and analogue audio routing to be controlled over I2C....
Qwiic Capacitive Soil Moisture Sensor
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This capacitive soil moisture breakout is designed for plant monitoring projects where exposed metal probes can corrode after time in the dirt. It measures moisture using a capacitive plate embedded in the board, managed by a CY8CMBR3102 Capsense® Express™ controller for improved durability in co...
HMC6343 Qwiic Digital Compass
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This compact digital compass module is built around the HMC6343, a fully integrated electronic compass designed to deliver reliable heading data without making your main microcontroller do all the processing.Unlike basic magnetometers that need to be kept flat, the HMC6343 combines 3-axis magneto...
Qwiic WAV Trigger Pro
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This compact audio trigger board is a high-fidelity polyphonic WAV player for interactive installations, instruments, exhibits and embedded sound projects. It plays uncompressed 16-bit, 44.1kHz mono and stereo WAV files from a microSD card, with CD-quality audio and very low trigger-to-sound late...
Indoor Air Quality Combo Sensor - SCD41/SEN55 (Qwiic)
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Build a detailed indoor air monitor with this Qwiic combo board, pairing Sensirion’s SCD41 CO2 sensor with the SEN55 environmental sensor node. Together they measure CO2, volatile organic compounds (VOCs), particulate matter across PM1.0, PM2.5, PM4 and PM10, temperature and relative humidity.The...
Qwiic Alphanumeric Display - Pink
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Add bright pink letters, numbers and symbols to your project with this Qwiic alphanumeric display. Its fourteen-segment digits give you far more flexibility than a standard seven-segment display, making it useful for status readouts, short labels, timers and compact user interfaces.The board uses...
FPC2534 Qwiic Fingerprint Sensor
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This breakout brings secure fingerprint authentication to embedded projects while keeping the complex biometric work on the sensor itself. Built around the FPC2534 from Fingerprint Cards AB, it handles enrolment, encryption, internal storage and authentication without requiring your host microcon...
LIS3DH Triple Axis Accelerometer Breakout (Qwiic)
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Add motion sensing to your project with this Qwiic-enabled LIS3DH breakout. The LIS3DH is a smart, low-power, three-axis capacitive micro-machined accelerometer with 12-bit resolution, suited to translation, motion, orientation and tap detection.This board is classified as a 3DoF, or 3 Degrees of...
Qwiic Directional Pad (PRT-26851)
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Add five-way navigation input to an I2C project without building a button matrix from scratch. Press up, down, left, right or centre on the low-profile directional pad to send button input to your microcontroller.The board uses a PCA9554 8-bit I2C I/O expander to read the momentary buttons, with ...
GPS-RTK Board - NEO-M8P-2 (Qwiic)
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Built around the u-blox NEO-M8P-2, this breakout brings high-accuracy GNSS and GPS positioning with RTK support to the Qwiic ecosystem. It’s designed for applications where standard GPS accuracy isn’t enough, with RTK positioning down to 25mm so you can track the location of a device, robot or ve...
MCP3421 18-Bit ADC Breakout - STEMMA QT / Qwiic
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This compact breakout adds a high-resolution, single-channel ADC to your I2C bus, making it a handy choice for precision differential measurements. It is built around the MCP3421, a simple and low-cost 18-bit ΔΣ converter with adjustable gain, a built-in precision reference voltage, and support f...
SparkFun Qwiic Pro Micro - USB-C (ATmega32U4)
This compact Arduino-compatible microcontroller board updates the classic Pro Micro format with handy modern additions while keeping the same overall footprint. It uses the ATmega32U4, giving you full USB functionality in a small board that can fit into tight builds.The board breaks out the famil...
