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.
The Eye Blink Detection Analog & Digital Sensor with Goggles is a powerful tool designed for Arduino enthusiasts, developers, and researchers interested in human-computer interaction and biometric sensing. Why is an analog eyeblink sensor better than a digital eyeblink sensor? Currently, most eye blink sensors on the market are digital. they can only...
Converts visible light intensity into analog voltage for microcontroller input Peak sensitivity at 570nm with ±60° detection angle, mimicking human eye response Ultra-fast response time in the microsecond range for real-time applications Compatible with both 3.3V and 5V systems, ideal for Arduino, ESP32, STM32, etc. Reliable detection range of 10 lux to...
Person Sensor V1.1 by Useful Sensors for face detection and recognition Pre-programmed with computer vision algorithms, no coding required Detects number of people, face location, and supports personalization Compact and low power (~150mW), ideal for embedded projects Simple Qwiic I2C interface for easy integration with SparkFun ecosystem Privacy-focused...
Acrylic mounting bracket designed for E18-D80NK Infrared Proximity Sensor 19mm sensor mounting hole with dual-sided insertion option Includes mounting hardware for quick and secure installation Allows easy attachment to robotic vehicle chassis or other surfaces Lightweight and durable construction for long-term use Compact size ensures compatibility with...
High-sensitivity MAX4466 Electret Microphone with built-in amplifier Adjustable gain for customized audio capture and signal strength Wide working voltage range: 2.4V to 5.5V for versatile use Compact design (20.8 × 13.8 × 7.5mm) with pre-soldered pins for easy integration Low quiescent current (<24μA) ensures energy-efficient performance Ideal for...
Sensirion SGP41 digital air quality sensor for VOC and NOx detection Uses advanced Gas Index Algorithm for accurate pollutant monitoring Enables autonomous air purifier and treatment device control Optimizes energy consumption by regulating device activation/deactivation Detects harmful VOC/NOx levels imperceptible to humans Compact design, ideal for...
Sensirion SGP40 digital TVOC gas sensor for indoor air quality monitoring Based on CMOSens® technology with integrated temperature-controlled micro hotplate Provides humidity-compensated VOC signals via I2C digital interface Works with Sensirion’s VOC Algorithm to deliver accurate VOC Index Robust against contaminating gases with excellent long-term...
INA219 DC current and voltage measurement module with I2C interface Measures high-side current up to 3.2A with 0.8mA resolution Supports load voltages from 0–26VDC Powered by 3–5V, compatible with both 3.3V and 5V logic MCUs Integrated 0.1Ω shunt resistor ensures accurate measurements Adjustable I2C address for multiple modules on the same bus
LIS3DSH high-resolution 3-axis accelerometer with ultra-low power consumption Selectable full-scale ranges: ±2g / ±4g / ±6g / ±8g / ±16g I²C/SPI digital output with 16-bit resolution and embedded FIFO buffer Programmable embedded state machine for autonomous applications Integrated temperature sensor, self-test, and interrupt generation features Wide...
LSM9DS1 9DOF IMU sensor with accelerometer, gyroscope, and magnetometer Provides acceleration, angular velocity, and magnetic field data in 3 axes Adjustable ranges: ±2–16g (accel), ±245–2000 °/s (gyro), ±4–16 gauss (mag) Supports both I²C and SPI interfaces for flexible MCU integration Compact breakout board with axis labels for easy orientation...
KA75330 3.3V voltage detector for reset/enable control Prevents microcontrollers from running at dangerously low voltages Monitors supply voltage and pulls output low below 3.3V Starts operating from as low as 0.8V, ensuring early protection Ideal for Li-Po battery-powered projects and ESP8266/Feather boards Compact, reliable solution for power startup...
Optical infrared reflective sensor for line tracking and object detection Uses IR LED + receiver pair with onboard LM393 comparator Adjustable sensitivity via 10K potentiometer Detection range: up to ~1" at 5V, ~0.6" at 3.3V Output logic: HIGH normally, LOW when reflective surface detected Operates on 3.0V – 5V, with onboard detection LED indicator
Intelligent non-contact liquid water level sensor (RS485 communication) Wide input voltage range: DC 5–24V with low power consumption (5mA) IP67 waterproof ABS enclosure for reliable durability Detects liquid levels in non-metallic, airtight containers without drilling Works with toxic, acidic, alkaline, or high-pressure liquids Induction thickness range:...
Non-contact liquid level sensor for contamination-free detection Supports wide voltage range: 3.3V–26V (recommended ≤24V) Compact design: 10mm × 30mm, easy integration Sensing distance: ~3–4.5mm (not for metal containers) Durable construction with long service life Open-drain output for compatibility with microcontrollers, PLCs, and more
Non-contact liquid level sensor for clean and safe detection Operates on 3.3V–5V power supply (direct Arduino compatible) Compact design: 10mm × 30mm for easy integration Reliable detection range of 3–4.5mm (not for metal containers) High stability and strong anti-interference capability Simple output: High (no liquid), Low (liquid detected)
XKC-Y25 non-contact water level sensor with NPN output Operates on 24V DC with low 5mA power consumption IP67 waterproof ABS housing for durability in harsh environments Detects liquid levels without drilling non-metallic containers Works with toxic, acidic, alkaline, or high-pressure liquids Strong anti-interference, stable, and highly sensitive design
3-axis accelerometer + 3-axis magnetometer in a single chip Six-axis motion sensing via I2C digital interface Built-in 12-bit ADC with 16-bit data output Adjustable acceleration range: ±2g, ±4g, ±8g Magnetic field detection: ±1.3 to ±8.1 gauss Compact and low-power module for robotics and navigation
Integrated latching Hall-Effect sensor (US1881) Magnetic presence detection with output toggle function Wide operating voltage: 3.5V–24V DC Open-collector output, up to 50mA sinking current Built-in Schmitt trigger for noise immunity Compact TO-92 package with reverse polarity protection
Compact AT407 tilt sensor switch for orientation detection Operates by ball contact mechanism inside the casing Simple digital ON/OFF output based on tilt position Small TO-92 style package for easy integration Requires debounce handling for vibration resistance Ideal for robotics, alarms, and orientation-based control
All-in-one Oxygen Monitoring: This complete kit combines the OCS-3F ultrasonic sensor with an LCD display and power supply for convenient oxygen concentration and flow rate monitoring. Enhanced User Experience: The large LCD screen displays real-time oxygen concentration (21% - 95.6%), flow rate (up to 20 L/min), and room temperature for clear and easy...
Compact ultrasonic distance sensor with 2cm–400cm non-contact measurement range. High accuracy up to ±3mm for precise distance and obstacle detection. Operates on both 3.3V and 5V systems, making it compatible with Arduino, ESP32, and Raspberry Pi. Built-in ultrasonic transmitter, receiver, and control circuit for reliable performance. Simple 4-pin...
Inductive proximity sensor for non-contact metallic object detection. Detects objects within a 5mm sensing range with high accuracy. NPN Normally-Open (NO) output for easy integration with controllers. Wide operating voltage range: 6–36V DC. LED status indicator for quick debugging and setup. Ideal for industrial automation, CNC, robotics, and 3D...
K-type thermocouple with wide measurement range: 0℃ to 400℃. 100mm stainless steel probe ensures durability and accurate readings. High sensitivity and fast response time for reliable temperature measurement. Comes with 3-meter long cable for flexible installation. Suitable for plastic, textile, machine, and industrial applications. Compact, lightweight,...
High-quality roller lever microswitch for precise contact detection Ideal as a travel limit switch for 3D printers or CNC machines 80cm long 24AWG cable with JST to Dupont connectors for easy integration Red LED indicator lights up when switch is triggered Compatible with 3.3V and 5V logic systems Durable and reliable build quality for repeated operations
Compact impact/collision detection sensor module for Arduino and robotics Converts mechanical impact into an electrical signal output Lightweight design, only 3g with 25 × 14 × 6 mm dimensions Simple installation with M3 mounting hole for small cars and robotics projects Low-level output trigger when collision/impact occurs Ideal for DIY robotics,...
Original Figaro TGS813-A00 explosive gas sensor with high sensitivity Detects methane, propane, butane, hydrogen, and other explosive gases Semiconductor element with tin dioxide for reliable gas detection Wide measuring range up to 10,000 ppm Operates with supply voltage up to 24V Compact and lightweight, ideal for safety and monitoring applications
