Product Specifications

* - Current consumption varies depending on the selected data interval and whether or not it is running in "quiet" mode. See the technical section of the User Guide for details.

Errata: The enclosure for the DST1200 may state the range as being 220mm to 10m, but it is actually 40mm to 10m, as listed in the specification table.

Software Objects

API

Documents

• Mechanical Drawings
• Download 3D Step File
• Programming Resources

Library & Driver Downloads

• Windows libraries
• macOS libraries
• Linux libraries
• iOS libraries
• Android libraries

Code Samples

Projects

• Hack Your Halloween with Phidgets (October 17, 2017)
• Exploring the Many Methods of Object Detection (May 23, 2014)

Product History

Getting Started

Welcome to the DST1200 user guide! In order to get started, make sure you have the following hardware on hand:

• DST1200 - Sonar Phidget
• VINT Hub
• Phidget cable
• USB cable and computer

Next, you will need to connect the pieces:

1. Connect the DST1200 to the VINT Hub using the Phidget cable.
2. Connect the VINT Hub to your computer with a USB cable.

Now that you have everything together, let's start using the DST1200!

Using the DST1200

Phidget Control Panel

In order to demonstrate the functionality of the DST1200, the Phidget Control Panel running on a Windows machine will be used.

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:

• Getting started with Windows
• Getting started with macOS

Linux users can follow the getting started with Linux guide and continue reading here for more information about the DST1200.

First Look

After plugging the DST1200 into your computer and opening 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:

• Serial number: allows you to differentiate between similar Phidgets.
• Channel: allows you to differentiate between similar objects on a Phidget.
• Version number: corresponds to the firmware version your Phidget is running. If your Phidget is listed in red, your firmware is out of date. Update the firmware by double-clicking the entry.

The Phidget Control Panel can also be used to test your device. Double-clicking on an object will open an example.

Distance Sensor

Double-click on the Distance Sensor , labelled Sonar Phidget, 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:

• Modify the change trigger and/or data interval value by dragging the sliders. For more information on these settings, see the data interval/change trigger page.
• Toggle the Quiet Mode with the checkbox. For more information on Quiet Mode, check out the technical section.
• The distance (mm) of the strongest reflection will be shown in the Data box. All other reflections (distance and amplitude) can be seen in the Sonar Reflections box. These additional reflections can correspond to other objects, or echoes of the primary object.

Technical Details

Quiet Mode

The DST1200 has a Quiet Mode property which, as the name suggests, reduces the volume of the sound pulses used by the sonar sensors. While the sound that this Phidget makes is audible in either mode, it is much more noticeable without quiet mode enabled. By enabling quiet mode, you will affect the maximum sensing range and the number of reflections detected. Quiet mode also consumes less power, as explained in the next section.

Current Consumption

The current consumption of the DST1200 varies depending on the data interval you choose. The longer the interval between samples, the lower the current consumption. Switching to quiet mode also lowers current consumption slightly.

Amplitude Response

When you receive data from the DST1200, you'll end up with an array of sonar reflections that each have a distance and an amplitude. The distance, of course, refers to how far away the object is. The amplitude gives you a general idea of the size of the object. The amplitude value can range from 3 to approximately 900, with 3 being a very small reflection and 900 being a very large one. In most applications, when you're using the DST1200 as an ordinary distance sensor, you'll probably want to ignore all reflections except for the one with the greatest amplitude.

Saturation

The DST1200 will fire saturation error events when the nearest reflection is closer that 40mm from the sensor. At this range it is too close for the sensor to accurately determine the range of the object.

What to do Next

• Software Overview - Find your preferred programming language here to learn how to write your own code with Phidgets!
• General Phidget Programming - Read this general guide to the various aspects of programming with Phidgets. Learn how to log data into a spreadsheet, use Phidgets over the network, and much more.
• Phidget22 API - The API is a universal library of all functions and definitions for programming with Phidgets. Just select your language and device and it'll give you a complete list of all properties, methods, events, and enumerations that are at your disposal.

VINT Hubs

This Phidget is a smart device that must be controlled by a VINT Hub. For more information about VINT, have a look at the VINT Primer. You can use a Phidget Cable to simply and easily connect the two devices. Here's a list of all of the different VINT Hubs currently available:

Product			Board
Image	Part Number	Price	Number of VINT Ports
	HUB0000_0	$30.00	6
	SBC3003_0	$120.00	6

Phidget Cables

Use a Phidget cable to connect this device to the hub. 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.

Product			Physical Properties
Image	Part Number	Price	Cable Length
	3002_0	$2.00	600 mm
	3003_0	$1.50	100 mm
	3004_0	$3.00	3.5 m
	3034_0	$1.50	150 mm
	3038_0	$2.25	1.2 m
	3039_0	$2.75	1.8 m

Have a look at our distance sensors:

Product			Sensor Properties
Image	Part Number	Price	Sensor Type	Controlled By	Measurement Distance Min	Measurement Distance Max
	1128_0	$35.00	Distance (Sonar)	VoltageRatio Input	152.4 mm	6.5 m
	1146_0	$7.00	Distance (Infrared)	VoltageRatio Input	1.5 mm	4 mm
	3520_0	$14.00	Distance (Infrared)	Sharp Adapter	40 mm	300 mm
	3521_0	$12.00	Distance (Infrared)	Sharp Adapter	100 mm	800 mm
	3522_0	$16.00	Distance (Infrared)	Sharp Adapter	200 mm	1.5 m
	DST1000_0	$30.00	Infrared (Time-of-Flight)	VINT	4 mm	* 170 mm
	DST1200_0	$25.00	Distance (Sonar)	VINT	40 mm	10 m