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Magnetic3D v1.0 $25.68US
excl. sales tax

This sensor will show you the mysteries of magnetism. Measures upto 8 Gauss (1 Gauss is 0.0001 Tesla, and if measuring in air, it is 1 Oersted) in three orthogonal directions. Comes with one those super strong neodymium magnets. A digital I2C sensor, that outputs high resolution, low-noise signals. View, process and map the sensor data using our Magnetic3D software (see below). Need longer cables ? Use the ExtendCable2D. See this videoclip for a demo of Magnetic v2.1 !

Application information

Product Magnetic3D sensor
  1. Measure proximity of magnetic objects (or objects with a magnet attached).
  2. Measure RPM by attaching a magnet to the wheel.
  3. Count how many magnetic objects pass by the sensor.
  4. Attach to doors and detect when they are (almost) closed.
  5. Measure the strength of the earth's magnetic field.
  6. Combine it with a GForce3D, and make your own tilt-compensated compass, like the Orient3D (some math skills required !).
Manuals Using the sensor with the Wi-microSystem enables you to use the sensor without being tethered to your computer or MIDI device.
  1. Make sure the sensor is plugged into the digitizer with the red wire connected to power. Reversing the plug may cause damage to the sensor.
  2. Requires a digitizer with digital (I2C) ports, eg. the USB-microDig or the Wi-microDig.
  3. The default I2C address is 30 (0x1E). Both I2C lines have 4.7 kOhm pull-up resistors.
  4. For more technical specs, and to find out how to access the sensor data, please consult this datasheet.
  5. Any magnetic materials or fields in the vicinity of the sensor may distort the sensor output.
  6. The earth's magnetic field has to be taken into account when measuring the field strength of magnets, since the strength of the earth's magnetic field at the earth's surface ranges from less than 30 microTeslas (0.3 gauss) in an area including most of South America and South Africa to over 60 microteslas (0.6 gauss) around the magnetic poles in northern Canada and south of Australia, and in part of Siberia.

  1. 04 Dec 2016: Magnetic3D v2.10 for MacOS and Windows from source code in Max. For multiple sensors or sensor outputs, run multiple instances of the application, each started in its own folder. Requires a digitizer with firmware v6.2, v6.3, v7.2 or v7.3. Use together with Connect (MacOS / Windows).
  2. 07 Dec 2014: Magnetic3D v1.30 for MacOS and Windows (64bit, contact us for the 32bit version) from source code in Max. Use together with Connect (MacOS / Windows).
To use multiple Magnetic3D sensors with one digitizer, copy the Magnetic3D software into separate folders then start each copy. Select the input pairs in each instance as per the physical connections, ie. 1-2 and 3-4. Then select "Master" for I2C clock in the software instance that's connected to pair 1-2 and turn it on. The other instance's Setup and Options sections should grey out but all instances should show correct data. If there is jitter in the signals, increase the sampling interval. This feature is still under development so there may be errors/bugs.

Technical specifications

Product Magnetic3D sensor
Version 1.0 (August 2014)
Sensing parameter magnetic field strength
Sensing method Hall effect sensor
Range 1 to 8 Gauss (1 Gauss in air = 1 Oersted)
Resolution 1 mGauss
Non-linearity 0.1 % minimum
Hysteresis 0.025 % minimum
Bandwidth 160 Hz
Power supply 3 to 5.25 V DC, ? mA at 5 V DC
Operating temperature -30 to 85 C (-22 to 185 F)
Sensor dimensions 15 x 26 x 4.0 (0.59 x 1.0 x 0.16 inch)
Weight 11 g (0.39 oz), incl. cable
Cable 1.0 m (39 inch), shielded, red wire = power, black wire = ground, grey wire = I2C data (SDA), white wire = I2C clock (SCL), extension tested upto 5 m (16 ft)
Connector male plug with 1 and 3 pins in two rows spaced 2.54 mm (0.100 inch)
Included magnet Neodymium magnet 10,800 Gauss, 6.4 mm (0.25 inch) diameter x 1.6 mm (0.063 inch) thick

This page was updated on Sunday 05 February 2017.
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