SparkFun is an online retail store that sells the bits and pieces to make your electronics projects possible. No matter what your vision is, our products and resources are designed to make the world of electronics more accessible to the average person. In addition to products, SparkFun, through our Department of Education, offers classes and online tutorials designed to help educate individuals in the wonderful world of embedded electronics. Our ever-growing product catalog boasts over 2,000 components and widgets designed to help you unleash your inner inventor.
Figaro TGS2603 semiconductor gas sensor for detecting unpleasant odors and air pollution. Highly sensitive to odors, stale food, and organic pollutants (1–10 ppm range). Analog output signal for simple integration with microcontrollers and analog systems. Low power consumption design ideal for continuous monitoring. Operates on 5V supply voltage with easy...
Sensirion SPS30 optical particulate matter sensor for precise PM1.0, PM2.5, PM4.0, and PM10 measurement. Utilizes laser scattering and contamination-resistance technology for long-term accuracy. Measures both mass and number concentration of particles with ±10% precision. Digital output via I²C and UART for easy microcontroller integration. Compact and...
Sensirion SCD30 combines CO₂, temperature, and humidity sensing in one compact module. Uses NDIR dual-channel technology for precise CO₂ measurement (400–10,000 ppm). Delivers ±(30 ppm + 3%) accuracy for environmental and industrial monitoring. Low power consumption (19 mA) suitable for IoT and portable applications. Supports both UART and I²C interfaces...
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PlanTower PMSA003-C Laser Dust Sensor measures PM1.0, PM2.5, and PM10 concentrations for precise air quality monitoring. Utilizes laser light scattering technology to detect particles from 0.3 µm to 10 µm in size. Built-in low-noise fan ensures stable airflow and accurate measurements. UART communication interface for simple integration with...
PlanTower PMSA003-A Laser Dust Sensor for PM1.0, PM2.5, and PM10 air quality detection. Utilizes laser light scattering technology for precise measurement of particles as small as 0.3 µm. Features a built-in silent fan for stable airflow and accurate readings. UART communication interface (3.3V logic level) for simple integration with microcontrollers....
PMS7003 Laser Dust Sensor for precise PM1.0, PM2.5, and PM10 air quality measurement. Detects ultra-fine particles down to 0.3 µm using laser scattering technology. Features UART communication (3.3V logic) for easy integration with Arduino, ESP32, or Raspberry Pi. Compact and energy-efficient design ideal for smart home and environmental monitoring....
Advanced 60GHz millimeter-wave radar sensor for people counting and motion detection. Utilizes FMCW radar technology for accurate, real-time entrance/exit tracking. Non-visual sensing ensures complete privacy and works in all lighting conditions. Detection range: 0.5–8 meters with ±60° coverage angle. Low power consumption (0.3W average) with ultra-fast...
Hi-Link HLK-LD6001C Combo – 60GHz millimeter-wave radar for precise people counting. Utilizes FMCW radar technology for accurate entrance and exit flow detection. Non-visual and privacy-friendly operation ideal for sensitive environments. Detection range: 0.5–8m with ±60° coverage for wide-area monitoring. Low power consumption (0.3W average) and...
Hi-Link HLK-FM225 advanced face recognition module with deep learning AI. Features dual cameras (IR + visible) for accurate liveness detection. High recognition accuracy (98.85%) with anti-spoofing capability. Supports UART and USB communication for versatile device integration. Compact design (40×15×10.65mm) ideal for smart locks and IoT devices. Detects...
SW-520D angle sensor module for tilt and orientation detection. Built-in LM393 comparator chip ensures stable and accurate digital output. Adjustable sensitivity via onboard potentiometer for flexible applications. Digital output (0/1) simplifies integration with Arduino, Raspberry Pi, etc. Includes LED indicators for power and output status monitoring....
Hi-Link LD2420 – high-sensitivity 24GHz FMCW radar sensor for human presence detection. Detects both motion and stationary targets with high precision and reliability. Detection range: up to 8m (wall-mounted) or 5m (ceiling-mounted). UART interface + digital output for easy integration with microcontrollers. Low power consumption (3.3V, ~50mA) ideal for...
Hi-Link LD2420 24GHz FMCW Radar Sensor Kit Combo for advanced human presence detection. Detects both motion and stationary targets with high precision and reliability. Includes sensor module and interface accessories for ready-to-use integration. Detection range: up to 8m (wall-mounted) or 5m (ceiling-mounted). UART + digital output for flexible...
GM65 (CM65) QR & Barcode Scanner Module for high-speed 1D/2D decoding. Reads barcodes and QR codes from paper or screens in under 1 second. Built-in white LED light for reliable scanning even in low-light conditions. Supports both USB and UART interfaces for flexible integration. Compatible with multiple 1D and 2D code standards including QR, PDF417,...
Gravity Liquid Flow Sensor (G1/4) based on electromagnetic principle for precise flow measurement. Wide operating voltage range of 3.5V–24V with NPN pulse output for easy microcontroller integration. Durable design with O-ring and silicone sealant for enhanced water resistance and reliability. Supports liquid types with high concentration and low...
Gravity: Analog TDS Sensor/Meter for Arduino is an Arduino-compatible TDS Meter Kit for measuring TDS value of the water, to reflect the cleanliness of the water. TDS meter can be applied to domestic water, hydroponic and other fields of water quality testing. You may also check Liquid Senser Selection Guide to get better familiar with our liquid sensor...
The Industrial pH Electrode - Armor Casing (H-101) is a high-performance pH combination electrode designed for precision and durability in industrial applications. It features a low-impedance sensitive glass membrane, ensuring fast response and excellent thermal stability. The electrode is robust, with a ring PTFE membrane that resists clogging, making it...
E-201/E-201C Rechargeable Composite pH Electrode for precise pH measurement in lab and industrial applications. Dual structure with glass pH and Ag/AgCl reference electrodes for stable, accurate readings. Wide pH measurement range (0–14) and fast 5-second response time for reliable performance. Durable polycarbonate body ensures chemical resistance and...
High-precision BME280 I2C sensor measures temperature, humidity, and pressure. Supports 3.3V and 5V operation with built-in voltage regulator and logic level shifters. Measures temperature (-40°C to 85°C), humidity (0–100%), and pressure (300–1100hPa). Compact 4-pin I2C interface for easy integration with Arduino, ESP32, and Raspberry Pi. Provides...
Compact and energy-efficient PIR motion detection sensor with high sensitivity. Detects human movement up to 5 meters for automation and security systems. Ultra-low power consumption (20µA) — ideal for battery-powered projects. Adjustable delay time (2.5 seconds to 1 hour) for flexible applications. Works on 3.3V–5V DC, compatible with Arduino, Raspberry...
High-precision 3-axis digital compass based on QMC5883L magnetometer chip. Measures magnetic fields from -8 to +8 gauss with ±2 milligauss accuracy. Supports I2C interface, fully compatible with Arduino, Raspberry Pi, and ESP32. Low power consumption — 100µA in measurement mode and 2µA in sleep mode. Compact and lightweight module for easy integration...
High-precision voltage, current, and power monitoring module using INA226 sensor. 16-bit ADC resolution ensures accurate and stable real-time measurements. Supports I²C communication with Arduino, Raspberry Pi, ESP32, and STM32. Measures both high-side and low-side currents for flexible circuit integration. Wide input voltage range up to 36V with...
High-precision formaldehyde (CH₂O) detection module using electrochemical sensing technology. Provides dual output options: UART digital and analog voltage output. Built-in temperature compensation ensures accurate readings under varying environments. Fast response and recovery time (≤60s) for real-time air-quality monitoring. Operates on 3.7V–5.5V with...
Good sensitivity to CO/Combustible Gas High sensitivity to Methane, Propane, and CO Long life and low cost Simple drive circuit Input voltage: DC 5±0.2V Current Consumption: 150mA
GY-271 HMC5883L 3-Axis Magnetometer Sensor Module for accurate magnetic field detection. Measures X, Y, and Z-axis magnetic fields with ±2 milligauss precision. Supports I²C communication, compatible with Arduino, Raspberry Pi, and ESP32 Ideal for robotic navigation, drone stabilization, and GPS orientation systems. Features low power consumption (100µA...
Compass Sensor HMC5883L HW-127 3-axis digital magnetometer module Precise heading detection for robotics, UAV, and navigation projects I2C communication for easy integration with Arduino, ESP32, STM32 Wide measuring range of ±1.3 to 8 Gauss 3–5V operating voltage with onboard 5V-safe logic Compact and lightweight design for embedded applications
MCP9808 High Accuracy I²C Digital Temperature Sensor with ±0.25°C precision. Wide temperature range: -40°C to +125°C with 0.0625°C resolution. I²C interface with adjustable addresses (up to 8 devices on one bus). Operates on 2.7V–5.5V, compatible with 3.3V and 5V logic systems. Ultra-low power consumption (200μA typical) ideal for battery-powered IoT....
This Wind Direction Sensor is a high-quality replacement component specifically designed for WH series wireless weather stations, including the WH2081 model. Whether you're maintaining your existing weather monitoring setup or replacing a faulty part, this sensor ensures accurate and reliable wind direction readings for continued environmental tracking.
The GY-BNO055 9DOF Absolute Orientation Sensor Module is a high-precision 9-axis IMU (Inertial Measurement Unit) breakout board that combines a 3-axis accelerometer, 3-axis gyroscope, and 3-axis magnetometer. Unlike traditional IMUs, the BNO055 simplifies complex motion tracking by integrating a high-speed ARM Cortex-M0 processor directly on the chip....
