Gauges and sensors

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Acceleration (‏12)
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Magnetic (‏26)

Featured products

  Gas sensor methane MQ-4
A simple-to-use compressed natural gas (CNG) sensor, suitable for sensing natural gas (composed of mostly Methane [CH4]) concentrations in the air. The MQ-4 can detect natural gas concentrations anywhere from 200 to 10000ppm. The MQ4 has a high sensitivity and fast response time. The sensor's output is an analog resistance. The drive circuit is very simple; Just connect it to 5V, GND, and the output to an ADC via a resistor. Can be mounted on suitable breakout board 41004066. Dimensions: ø19mm x 17mm (without pins)
$6.19
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  RPI-1031 Tilt-a-Whirl Breakout
The RPI-1031 tilt sensor is capable of sensing a change in orientation in four different directions: forward, back, left or right. This breakout board makes it easier to incorporate the RPI-1031 in your next project by breaking the necessary pins out to standard 0.1" spaced headers. This board will work at either 3.3 or 5V.
$8.74
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  Magnetic Door Switch (NO)
Magnetic swtich with flanges for easy mounting. Product consists of magnetic swtich, magnet and four screws. When the magnet gets near the switch, the switch closes.
$2.89
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  Current probe 30A
This non-invasive current sensor (also known as a "split core current transformer") can be clamped around the supply line of an electrical load to tell you how much current is passing through it. It does this by acting as an inductor and responding to the magnetic field around a current-carrying conductor. By reading the amount of current being produced by the coil, you can calculate how much current is passing through the conductor. This particular current sensor will measure a load up to 30 Amps which makes it great for building your own energy monitor to keep your power usage down, or even building an over-current protection device for an AC load. This sensor does not have a load resistor built in, so in most cases it will be necessary to place a resistor across the output to convert the coil's induced current to a very small measurable voltage.
$13.13
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  Reed switch 1p NO 0.5A FLEX-14
Reed switch, single pole with soft connection leads. Contact is closed by magnetic force. Manufacturer: Hamlin Type: FLEX-14 Max voltage: 200V DC Max current: 0.5A Sensitivity: 20AT Total length: 44.3mm Body length: 14mm Body diameter: 2.28mm NB! Cutting the connectors may harm the component, see more under Preview Files ("kapning av ben" - pdf is in English).
1 - $1.69
10 - $1.52
25 - $1.27
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  AttoPilot Voltage and Current Sense Breakout - 45A
This is a small voltage and current sense PCB. DC current is determined by measuring a voltage drop across a pair of parallel shunt resistors, then converted to a final analog voltage output by the TI INA-169. Voltage sense is accomplished by scaling to 3.3V ADC range by a precision resistor divider. The PCB is supplied without leads or connectors. The pad sizes are large enough to accommodate 12 gauge heavy duty leads (see datasheet) but care must be exercised in soldering. Smaller gauge leads are considerably easier to solder without creating shorts. Features: Input resistor divider scaled for 13.6V Input voltage (recommended) 51.8V Max 44.7A Max Very low zero current offset Analog current output scaled for 3.3V ADC Self Powered Dimensions: 4 x 15 x 19mm
$30.00
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  Anslutningskabel för 3st elektroder 4mm/3.5mm
This is your simple three conductor sensor cable with electrode pad leads. These cables are 24" long and feature a 3.5mm audio jack connector on one end with snap style receptacles for biomedical sensor pads. Each cable comes in a red/blue/black set. Dimensions: 24" Long
$7.11
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  MPU6050 accelerometer and gyroscope 3-axis UEXT
MPU6050 is MEMS 3-axis gyroscope and a 3-axis accelerometer on the same silicon die together with an onboard Digital Motion Processor (DMP) capable of processing complex 9-axis MotionFusion algorithms.   MPU6050 is with I2C interface and can connect to any board with UEXT.
$19.16
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  Allegro A1301 SOT-23 Hall-effect sensor 2.5mV/G
Ratiometric hall-effect sensor in SOT-23 SMD package. The sensor detects magnetism and outputs a linear voltage between 0V and VDD, centered around VDD/2. Excellent for highly accurate positioning for short distances. * Supply voltage: 4.5 - 6VDC * Output current: 10mA * Bandwidth: 20kHz * Sensitivity: 2.5mV/G * Manufacturer: Allegro Microsystems * Model: A1301KLHLT-T * Pinout: 1 = VCC, 2 = VOUT, 3 = GND
$2.65
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  MPU-9250 on PCB
The SparkFun MPU-9250 IMU Breakout features the latest 9-axis MEMS sensor from InvenSense. Each of these 9DoF breakouts feature an MPU-9250 with a System in Package (SiP) that combines two chips: the MPU-6500, which contains a 3-axis gyroscope as well as a 3-axis accelerometer, and the AK8963, which features a 3-axis magnetometer. This breakout has been designed to be smaller than some of our other offerings to fit in smaller projects. However, if you plan to use a breadboard, or secure the IMU board to a project with something like epoxy, the mounting holes can be easily snapped off.   To achieve its smaller size, the MPU-9250 Breakout features PTH pins that have been wrapped around the border of the PCB in three rows of three or four. The top row (J1) is all one needs to get the most functionality out of the IMU. These include the I2C and power interface. The second most likely to be used set of PTHs are found along the bottom (J3). This includes the address pin, the interrupt pin, and the IO voltage supply for easy interface with a more modern 1.8V processor. The third, a non-breadboard-compatible row (J2), is used for features like running other I2C devices as slaves to this one. For prototyping with these connections, throw your connections on top as you would with an Arduino Pro Mini or similar product.   The MPU-9250 replaces the popular EOL MPU-9150 and decreases power consumption by 44 percent. According to InvenSense, Gyro noise performance is 3x better, and compass full-scale range is over 4x better than competitive offerings. The MPU-9250 uses 16-bit Analog-to-Digital Converters (ADCs) for digitizing all nine axes, making it a very stable 9 Degrees of Freedom board.   Features:   Digital-output X-, Y-, and Z-axis angular rate sensors (gyroscopes) with a user-programmable full-scale range of ±250, ±500, ±1,000 and ±2,000°/sec and integrated 16-bit ADCs Digital-output triple-axis accelerometer with a programmable full-scale range of ±2g, ±4g, ±8g and ±16g and integrated 16-bit ADCs 3-axis silicon monolithic Hall-effect magnetic sensor with magnetic concentrator Digitally programmable low-pass Gyroscope filter Gyroscope operating current: 3.2mA Accelerometer normal operating current: 450µA Magnetometer normal operating current: 280µA at 8Hz repetition rate VDD supply voltage range of 2.4 3.6V Small board design Detachable mounting holes
$21.57
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  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.
$4.70
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  Reed switch 1p NO/NC 0.25A 15-20AT
Tungelement 1-poligt. Kontakten växlar vid magnetisk påverkan. Separata utgångar för normalt öppen samt normalt sluten kontakt. Max spänning: 175V Max ström: 0.25A Känslighet: 15-20AT Total längd: 52.7mm Kropp längd: 14.7mm Kropp diameter: 2.7mm OBS! Klippning av anslutningarna kan skada komponenten. Komponentbenen måste fixeras med tång för att inte glaskroppen ska spricka.
$4.70
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