DOT 320 User manual

08591
Gasan Digital 1-Ro2, Geumcheon-gu, Seoul, Korea
10F No. 1005 (Gasan-dong, Woorim Lions Valley 2nd)
Phone Number: [phone]
Fax: [phone]
Email: [email protected]
Homepage: www.dotincorp.com
Dot Pad 320
(DPA320A)
Simple Guide
Dot Incorporation

Table of Contents
Table of Contents 1
1. About Dot Pad 320 (DPA320A) 3
1.1. What is Dot Pad 320? 3
1.2. Dot Pad 320 Appearance 3
1.2.1 Dot Pad 320 Top view 4
1.2.2. Dot Pad 320 Right Side 5
1.2.3. Dot Pad 320 Left Side 6
1.2.4. Dot Pad 320 Bottom Surface 6
1.3. Hardware Specifications 7
1.4 Software Specifications 7
2. Basic Functions 8
2.1. Understanding device information through Dot Pad 320 vibration signals 8
2.2. Checking the battery level 8
3.1 Introduction to Dot Canvas 8
3.2 Connecting Dot Pad 320 to Dot Canvas 9
3.3 Dot Canvas Features 9
3.3.1. Setting 9
3.3.2 Play Scratch 9
3.3.3. Drawing 10
3.3.4. Gallery 10
3.3.5. Online Gallery 10
4. Using DTM (Dynamic Tactile Map) Editor 11
4.1 Introduction: DTM Editor 11
4.2 DTM Editor Screen Layout 11
4.2.1. Content Library 11
4.2.2. DTM Editor Page 11
4.3 Connecting Dot Pad 320 DTM Editor 12
4.3.1 Connecting Dot Pad 320 12
4.3.2 Disconnecting Dot Pad 320 12
4.3.3 Printing on Dot Pad 320 12
4.4 DTM Editor Tools 12
4.5 DTM Editor Tool Shortcuts 13
5. Application of Dot Pad 320 with VoiceOver 13
5.1 Connecting/Disconnecting with iPhone/iPad 13
5.1.1. Connecting iPhone/iPad with the Dot Pad 320 13
5.1.2. Disconnecting the Dot Pad 320 14
5.2. Default Key Settings 14
5.3. Connecting iPhone/iPad with the Dot Pad 320 to read braille and tactile images 14
5.3.1. Reading Braille Text 14
5.3.2. Displaying the Image 14
5.4. Reading images in detail with rotors 15
5.4.1. Adding Image Navigation Options to the Rotor 15

5.4.2. Using Image Inversion 15
5.4.3. Enlarging an Image 15
5.4.4. Scrolling Images Horizontally and Vertically 15
5.4.5. Adjusting the Image Line Thickness 16
5.5. Viewing Images Using Voiceover Recognition 16
5.5.1. Creating Image Recognition Gestures 16
5.5.2. Using the Image Recognition Function to View an Image 16
5.6. Customizing the Dot Pad 320 Keys 16
6. Handling and Safety Precautions 17
7. Customer Support 19

1. About Dot Pad 320 (DPA320A)
1.1. What is Dot Pad 320?
The Dot Pad 320 is a display that can simultaneously represent Braille text and tactile graphics. It connects to
iPhone/iPad with OS 15.2 or above. When you connect to your iPhone/iPad, you can print the pictures,
photos, and icon shapes that appear on the screen as tactile information to the Dot Pad 320 in real-time.
Alternatively, you can use a dedicated SDK released by Dot to output tactile information from specific
applications to the Dot Pad 320.
1.2. Dot Pad 320 Appearance
When the Dot Pad 320 is removed from the box and placed on the desk, it is in the correct position when the
square body is slightly inclined away from the user.

1.2.1 Dot Pad 320 Top view
When the Dot Pad 320 is normally placed, the upper surface of the Dot Pad 320 is divided into the following
parts from nearest to farthest from the body:
- The graphic area: The graphic area takes up the most space from the top view with a total of 300, 8-pin
cells (horizontal 30 cells x vertical 10 cells). It is more compact compared to the Braille text area and has
equal spacing between the pins allowing clear representations of graphics.
- The keyboard area: Starting from the left to the right, the keyboard area consists of the Previous panning
key, Function keys(F1 through F4), and the Next panning key. The shape of the panning keys is a triangle,
which distinguishes them from other Function keys which are in an oval shape.
※ Note: A panning key is a key that moves to the previous and next line along the braille cells.
- Braille text display area: The Braille text display area serves as the braille output of a typical braille
information terminal; it consists of 20 cells in a long horizontally rectangular frame, arranged at standard
braille spacing. Thus, 20 alphabetic characters can be represented at the same time.
- LED indicator area : Two LED indicators are in the rightmost part of the keyboard area.
LED Color / State
Explanation
LED Color/State
Explanation
Blue / Blinking
Searching for device
Red / Blinking
Charging Error
Blue / turned on
Connected to device
Red / turned off
Fully Charged or
Device turned off
Red / turned on
Charging

1.2.2. Dot Pad 320 Right Side
On the right side of the Dot Pad 320, starting from the rear to the front, there is a USB C type power
charging port, followed by a power switch. A USB C type power port is a power only port. Keep in mind
that there is no data transfer.
The power switch powers on when pushed up to the far side of the body. A long vibration feedback occurs
when turned on. For more information on the vibration pattern, see section “2.1 Understanding device
information with a Dot Pad 320 vibration signal".

1.2.3. Dot Pad 320 Left Side
On the left side of the Dot Pad 320 is a USB C type port for data transfer. You can connect it to your PC via
USB C cable. This port can be controlled by the manager.
1.2.4. Dot Pad 320 Bottom Surface
The bottom surface of the Dot Pad 320 has a battery part and a screw part that can replace the film for braille
cell protection film. The batteries provided in the Dot Pad 320 are not detachable, so when replacing the
batteries, be sure to replace them via Dot Inc. or a company authorized by Dot. Please contact Dot Inc.’s
customer service for more information.

1.3. Hardware Specifications
Hardware Specifications
Tactile Display
300 cells
Braille Display
20 cells
Protective Skin
Graphics area (300 cells) / Text area
(20 cells)
Processor
ARM Cortex-M4 32-Bit 120MHz
RAM
64 Kbyte
Flash Memory
128 Kbyte
External Memory Support
None
Wireless Connection
Bluetooth LE V5.0
Sensor
None
Camera
None
Exterior Specifications
Size (length x width x
height, mm)
273.6(L) x 228.5(W) x 16.3(H)
Weight (g)
1,200 g
Keyboard and buttons
Function Keys
Function Key 4ea
Panning Key
Left, Right
Power Switch
Power ON/OFF 1ea
Keyboard
None
USB interface
USB-C (left)
Data
USB-C (right)
Power and Charging
Audio and video interface
Speaker
None
Microphone
None
HDMI Video Output
None
Temperature
Operating Temperature
0℃ ~ +50℃
Storage Temperature
-20℃ ~ +70℃
Charging and battery
Battery
LI_ION, INR18650 35E, 10.05A,
36.18W[1S3P]
Charge
DC 5V 3A
1.4 Software Specifications
Communication
(Bluetooth)
Specification
Bluetooth V5.0 (LE up to 10Kbps)
Output Power
0 dBm
Data rate
10 kbps
Profile
GAP, GATT, SM, L2CAP and Integrated Public Profiles
Sensitivity
-90 dBm

2. Basic Functions
In this section, you will get to know the different vibration patterns to test the Dot Pad 320’s state and ways
to check the battery level.
2.1. Understanding device information through Dot Pad 320 vibration signals
The vibration pattern of the Dot Pad 320 informs the user with information on battery level, Bluetooth
connection, power status and so on.
Status
Vibration Pattern
Power on
One long vibration
Power Connection
Once connected successfully, vibration will indicate the battery status
Battery Level
1~5 vibrations (according to the battery level)
Bluetooth Connected
Two long vibrations
2.2. Checking the battery level
To check the battery level of the Dot Pad 320, you can press and hold the previous and next panning keys at
the same time for at least 1.5 seconds while powered on, and then release them. The levels for displaying the
remaining battery are divided into 5 levels and are notified by vibration feedback.
Number of
vibrations
5
4
3
2
1
Battery Level
Above 80%
60% ~ 80%
40% ~ 60%
20% ~ 40%
Below 20%
※Please connect the power cable if the battery level is below 20%
3. Using Dot Canvas
3.1 Introduction to Dot Canvas
Dot Canvas is an application that can be used with Dot Pad 320 and expresses all types of information such
as dots(points), lines, planes, shapes, drawings, words, and anything. Dot Canvas application encourages and
increases creativity in visually impaired users by enabling them to create and edit image-based contents
independently without the assistance of a third party.
※Dot Canvas App can be downloaded from App Store.

3.2 Connecting Dot Pad 320 to Dot Canvas
After launching the Dot Canvas application, please select the “Connect Device” button and a ready-to-
connect (Bluetooth pairable) device will be listed together with the strength signal (RSSI). Select the Dot Pad
320 that you want to connect and tap and it will be successfully connected.
※ If the your device is not in the list, disconnect the Dot Pad 320 from Bluetooth in Voiceover settings.
[Settings] > [Accessibility] > [VoiceOver] > [Braille]
3.3 Dot Canvas Features
3.3.1. Setting
Once the Dot Pad 320 is successfully paired to Dot Canvas, the screen will automatically change to select
mode and VoiceOver will focus [Settings] at top right corner.
Users may disconnect the BLE (Bluetooth Low Energy) connection from the Dot Pad 320 as well as change
the language of the braille translation engine. Braille translation engine supports 13 languages. (English,
Korean, Chinese – simplified, French, German, Spanish, Russian, Italian, Arabic, Czech, Vietnamese,
Norwegian, Polish)
※The default language is English and the braille translation engine is only for the text function in Dot
Canvas.
3.3.2 Play Scratch
Users will be able to develop an understanding of length, width, and a sense of area and space by learning
and familiarizing dots(points), lines, and planes through Dot Canvas application’s “Play Scratch” feature.
Draw Freely: Straight line, right angle, right triangle, isosceles triangle, square, pentagon, hexagon, and the
shape circle will be displayed with speech explanation.
Draw Shapes: Square, right triangle, and the shape circle will be displayed on the tactile graphic display.
Users can enhance their sense of space by controlling the length, width and area.
- Select Draw Freely or Draw Shapes. Users will be asked to select geometrical shapes of his or her choice.
The users will access a drawing area where the users can draw and print the image on the Dot Pad 320.
Selected shape will be displayed on the graphic area of connected Dot Pad 320 as a sample.
- Draw Freely allows users a free-to-draw pen as a drawing tool. Draw Shapes allows users to draw
different sizes of shapes by dragging across the screen.
- The users can access the toolbar below the screen by tapping 4 times, allocating the focus to the Close
button within the toolbar.
※ Note: 4 taps are limited within toolbar area. If the users touch the drawing area, the focus will be removed from
the toolbar.
- The list of the tools starting from the right is Close button, Audio button, Clear All button, Sample Print
button, Print button, and Undo button.
- Close Button: Close the current screen
- Sample Print Button: Print the selected
geometric shapes into Dot Pad 320
- Audio Button: Play audio description on
selected geometrical shape
- Print Button: Print the image on drawing
area into Dot Pad 320