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The 1108 is a Hall-effect sensor that provides a voltage output that is proportional to the applied magnetic field.
This sensor can be read by any Phidget with an Analog Input or VINT Hub port. It will connect to either one using the included Phidget cable. VINT Hub ports can behave just like Analog Inputs, but have the added flexibility of being able to be used as digital inputs, digital outputs, or ports to communicate with VINT devices. For more information about VINT, see the VINT Primer.
|Image||Part Number||Price||Number of Voltage Inputs||Voltage Input Resolution|
|HUB0000_0||$30.00||6 (Shared)||* 16 bit|
|HUB5000_0||$60.00||6 (Shared)||* 16 bit|
|SBC3003_0||$120.00||6 (Shared)||* 16 bit|
This sensor comes with its own Phidget cable to connect it to an InterfaceKit or Hub, but if you need extras we have a full list down below. You can solder multiple cables together in order to make even longer Phidget cables, but you should be aware of the effects of having long wires in your system.
Welcome to the 1108 user guide! In order to get started, make sure you have the following hardware on hand:
Next, you will need to connect the pieces:
Now that you have everything together, let's start using the 1108!
In order to demonstrate the functionality of the 1108, we will connect it to the HUB0000, and then run an example using the Phidget Control Panel on a Windows machine.
The Phidget Control Panel is available for use on both macOS and Windows machines. If you would like to follow along, first take a look at the getting started guide for your operating system:
Linux users can follow the getting started with Linux guide and continue reading here for more information about the 1108.
After plugging in the 1108 into the HUB0000, and the HUB0000 into your computer, open the Phidget Control Panel. You will see something like this:
The Phidget Control Panel will list all connected Phidgets and associated objects, as well as the following information:
The Phidget Control Panel can also be used to test your device. Double-clicking on an object will open an example.
Double-click on a Voltage Ratio Input object in order to run the example:
General information about the selected object will be displayed at the top of the window. You can also experiment with the following functionality:
The 1108 is optimized, sensitive, and temperature-stable. It is a ratiometric Hall effect sensor which provides a voltage output that is proportional to the applied magnetic field. Accuracy can be improved on a specific device with offset and/or gain calibration (using known flux).
The Phidget libraries can automatically convert sensor voltage into Gauss by selecting the appropriate
SensorType. See the Phidget22 API for more details. The Formula to translate voltage ratio into Gauss is:
The Phidget Cable is a 3-pin, 0.100 inch pitch locking connector. Pictured here is a plug with the connections labelled. The connectors are commonly available - refer to the Analog Input Primer for manufacturer part numbers.
|Sensor Type||Magnetic Field|
|Controlled By||VoltageRatio Input|
|Sensor Output Type||Ratiometric|
|Magnetic Flux Min||-500 G|
|Magnetic Flux Max||500 G|
|Measurement Error Max||± 0.5 %|
|Magnetic Zero Balance Max||15 G|
|Magnetic Resolution||1 G|
|Current Consumption Max||2 mA|
|Output Impedance||1 kΩ|
|Output Voltage Min||200 mV DC|
|Output Voltage Max||4.7 V DC|
|Supply Voltage Min||4.5 V DC|
|Supply Voltage Max||5.5 V DC|
|Operating Temperature Min||-20 °C|
|Operating Temperature Max||85 °C|
|Mangetic Field Strength||(@ 6.5 mm) 500 G|
|Date||Board Revision||Device Version||Comment|
|June 2005||0||N/A||Product Release|
This device doesn't have an API of its own. It is controlled by opening a VoltageRatioInput channel on the Phidget that it's connected to. For a list of compatible Phidgets with VoltageRatio Inputs, see the Connection & Compatibility tab.
You can find details for the VoltageRatioInput API on the API tab for the Phidget that this sensor connects to.