Gauges and sensors

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Acceleration (‏12)
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Moisture (‏8)
Flexion (‏2)
Movement (‏35)
Biometric (‏12)
Gas (‏9)
Other (‏5)
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Temperature (‏22)
Distance (‏18)
Magnetic (‏27)

Featured products

  Polar Heart Rate Monitor Interface
This is a wonderful evaluation board cooperatively designed by danjuliodesigns and SparkFun. The Heart Rate Monitor Interface (HRMI) is an intelligent peripheral device that converts the ECG signal from the Polar Heart Rate Monitor (HRM) into easy-to-use heart rate data. It implements a sophisticated algorithm for computing an average heart rate even with noisy or intermittent data from the transmitter. Features: Multiple interfaces: USB, Logic-level serial and I2C Dual heart rate processing algorithms: averaged and raw Uses the RMCM01 Polar OEM receiver Compatible with coded and non-coded Polar transmitters including T31, T31C, T61C and Wearlink® 32-entry heart rate data history buffer Four 8-bit ADC inputs Up to a 5 channel digital input/output utility port Simple command/response interface Programmable power-on default operation Only works with one transmitter (HRM) in range Applications: Custom exercise equipment Portable heart rate monitoring devices Bio-feedback devices Heart beat aware body-worn electronics
  Accelerometer 1-axle ADXL193 250g
Breakout board for the low power, single axis ADXL193 accelerometer. The ADXL193 is a high-g sensor with a full scale range of ±250g! The ADXL193 can be powered from 3.5-6V. Access to the self-test pin is also provided. Board comes fully assembled and tested with selected sensor and 10nF decoupling capacitor. Installed Sensor: ADXL193 (± 250g) Dimensions: 0.4x0.55" Software: The ADXL193 outputs an analog voltage. This voltage is in ratio to the measured acceleration and to the supply voltage (ratiometric). You will need some extra hardware to convert this analog signal to a usable digital one. Luckily, many uCs have a built in Analog to Digital converter.
1 - $37.44
10 - $33.69
25 - $29.95
  Fingerprint Scanner
The Nitgen RS232 serial fingerprint scanner is a powerful ADSP-BF531 Blackfin based system. This scanner is capable of gathering and storing unique finger prints. Simply hold your finger on the optical scanner, query the device over serial, and you will be issued a unique ID. Use that ID within your embedded system to determine access levels, time clocks, door locks, etc. Unit includes master controller board, optical reader, and ribbon cable to connect read to controller. We are trying to get pigtail interface cables made but in the interim, you will need to create your own connection to the serial connector. Features: Serial at 9600bps 3.3V@200mA Capture in 0.2s Verification in 1.0s
  Flex Sensor 2.2"
A simple flex sensor 2.2" in length. As the sensor is flexed, the resistance across the sensor increases. Patented technology by Spectra Symbol - they claim these sensors were used in the original Nintendo Power Glove. The resistance of the flex sensor changes when the metal pads are on the outside of the bend (text on inside of bend). Connector is 0.1" spaced and bread board friendly. Check datasheet for full specifications. Note: Please refrain from flexing or straining this sensor at the base. The usable range of the sensor can be flexed without a problem, but care should be taken to minimize flexing outside of the usable range. For best results, securely mount the base and bottom portion and only allow the actual flex sensor to flex.
1 - $11.93
10 - $9.54
  Pulse Sensor
Heart rate data can be really useful whether you're designing an exercise routine, studying your activity or anxiety levels or just want your shirt to blink with your heart beat. The problem is that heart rate can be difficult to measure. Luckily, the Pulse Sensor Amped can solve that problem! The Pulse Sensor Amped is a plug-and-play heart-rate sensor for Arduino. It can be used by students, artists, athletes, makers, and game & mobile developers who want to easily incorporate live heart-rate data into their projects.It essentially combines a simple optical heart rate sensor with amplification and noise cancellation circuitry making it fast and easy to get reliable pulse readings. Simply clip the Pulse Sensor to your earlobe or finger tip and plug it into your 3 or 5 Volt Arduino and you're ready to read heart rate! The 24" cable on the Pulse Sensor is terminated with standard male headers so there's no soldering required. Of course Arduino example code is available as well as a Processing sketch for visualizing heart rate data. Kit Includes: Pulse Sensor Board 24-inch Color-Coded Cable with Standard Male Headers Ear Clip for Earlobe Heart Rate Measurement Velcro Finger Strap Transparent Stickers to Protect Sensor
  Passive electrodes for EKG/EMG Shield
PASIVE ELECTRODES FOR ELECTROCARDIOGRAPHY ELECTROMIOGRAPHY SHIELD FOR DUINOMITE, PINGUINO, MAPLE, ARDUINO LIKE DEVELOPMENT BOARDS This is passive electrode for SHIELD-EKG-EMG shield which allow Arduino like boards to capture Electrocardiography Electromiography signals. The shield opens new possibilities to experiment with bio feedback. You can monitor your heartbeat and log your pulse, recognize gestures by monitoring and analizyng the muscule activity as done in this project.
  Gas sensor MP503 breakout
The sensor is designed for indoor air quality testing. The main gas detected is carbon monoxide, alcohol, acetone, thinner, formaldehyde and other slightly toxic gases. It is compatible with 5V and 3.3V power supply. Features: Low power consumption High sensitivity Tiny outline Responsive to a wide scope of target gases Cost efficient Durable Compatible with 5V and 3.3V Specification: Sensor: Winsen MP503 Power: 5V or 3.3V Dimension: 40x20mm
  KMZ10CM SIP-4 Magnetoresistive sensor 1.2mV/V
The KMZ10 is a magnetoresistive sensor, for detecting magnetig fields. It is built around a wheatstone bridge and gives a resistive output signal, linear in proportion to the strength of the magnetic field. Can be used for contactless switching, measuring angles, positioning etc.
  MyoWare LED Shield
The MyoWare LED Shield is designed to pair with the MyoWare Muscle Sensor. The blue 10-segment bar graph shows the magnitude of the measured signal. The more muscle activation measured, the higher up the board the lit LEDs will go. With this shield you will be provided with a visual representation of the signals provided by the MyoWare Muscle Sensor and an on-board lithium polymer (LiPo) power source. This shield is likely to be the top board in a stack, so solder on some 1x3 male headers and plug into the sensor board. The power is supplied on the LED shield, but controlled by the power switch on the sensor. Once the stack is assembled, snap on some electrodes and stick the sensor on the target muscle. The MyoWare Muscle Sensor to which this shield attaches is an Arduino-powered, all-in-one electromyography (EMG) sensor from Advancer Technologies. The MyoWare board acts by measuring the filtered and rectified electrical activity of a muscle, outputting 0-Vs Volts depending on the amount of activity in the selected muscle, where Vs signifies the voltage of the power source. Note: The MyoWare Power Shield and the MyoWare LED Shield both provide power, but at slightly different voltages. Dont use both of these shields at the same time.
  Load cell 50Kg round - TAS606
This load sensor, sometimes called a strain gauge, is the same one found in digital bathroom scales (you know, the ones you use in January for your New Years resolutions, and then forget about a month later). This sensor can measure up to about 110 pounds. Check the video below for a simple explanation on how these work and how to use them.
  Collision sensor IR
Sensor with a combined IR-LED and IR-receiver mounted side by side. The sensor can detect wheter a surface is light or dark. Suitable for obstacle avoiding robots and optical counters. One trim potentiometer sets the light level where the output activates and the other controls the range of the detection.
  Pulse counter hall-effect
Hall-effect sensor for sensing magnetism. The output is low as long as no magnetic field is present and will go high as soon as the magnetic field increases above a set threshold. The trim potentiometer sets the threshold for when the output activates. Hall-effect sensors are commonly used as end-switches and encoders for motors. Connects to a digital input on a microcontroller.