Orbit Research GRAPHITI User manual

GRAPHITI
–User Manual
25th October 2021
Version 1.0

Graphiti –User Manual Version 1.0
Orbit Research 2
Contents
1INTRODUCTION------------------------------------------------------------------------------------------------4
2HOW THE GRAPHITI PROTOTYPE IS USED---------------------------------------------------------- 4
2.1 STAND-ALONE MODE -------------------------------------------------------------------------------------4
2.2 REMOTE MODE---------------------------------------------------------------------------------------------4
3FEATURES------------------------------------------------------------------------------------------------------- 4
4ORIENTATION -------------------------------------------------------------------------------------------------- 5
5USER INTERFACES ------------------------------------------------------------------------------------------ 7
5.1 DEVICE KEYPAD -------------------------------------------------------------------------------------------7
5.2 TOUCH PANEL----------------------------------------------------------------------------------------------7
5.3 USB ---------------------------------------------------------------------------------------------------------8
5.4 HDMI--------------------------------------------------------------------------------------------------------8
5.5 BLUETOOTH ------------------------------------------------------------------------------------------------8
5.6 EXTERNAL STORAGE MEDIA (SD CARD AND USB DRIVE)------------------------------------------8
5.6.1 Error Handling-----------------------------------------------------------------------------------------9
5.7 PC KEYBOARD ---------------------------------------------------------------------------------------------9
6POWERING ON AND OFF-----------------------------------------------------------------------------------9
6.1 RESET ----------------------------------------------------------------------------------------------------- 10
6.2 SLEEP ----------------------------------------------------------------------------------------------------- 10
6.2.1 Automatic Power Down--------------------------------------------------------------------------- 11
7CHARGING THE DEVICE---------------------------------------------------------------------------------- 11
7.1 BATTERY -------------------------------------------------------------------------------------------------- 11
8MESSAGE BAR ---------------------------------------------------------------------------------------------- 12
9VIBRATION INDICATION ---------------------------------------------------------------------------------- 12
10 PREFERENCE MENU--------------------------------------------------------------------------------------- 13
10.1 KEY CONTROLS FOR THE PREFERENCE MENU------------------------------------------------------- 13
10.2 MENU ITEMS---------------------------------------------------------------------------------------------- 13
11 CLOCK CONFIGURATION -------------------------------------------------------------------------------- 18
12 TOUCH FEATURES ----------------------------------------------------------------------------------------- 18
12.1 TOUCH GESTURES -------------------------------------------------------------------------------------- 18
12.2 DRAW FEATURE------------------------------------------------------------------------------------------ 18
12.2.1 Erasing -------------------------------------------------------------------------------------------- 20
12.2.2 Saving drawings -------------------------------------------------------------------------------- 20
12.2.3 Automatic File Saving-------------------------------------------------------------------------- 20
12.2.4 Reviewing drawings---------------------------------------------------------------------------- 21
12.2.5 Creating a new image ------------------------------------------------------------------------- 21
12.2.6 Modifying existing images -------------------------------------------------------------------- 21
12.2.7 User Indication during drawing -------------------------------------------------------------- 21
12.2.8 Canvas -------------------------------------------------------------------------------------------- 22
12.3 UNDO REDO FEATURE---------------------------------------------------------------------------------- 24
13 REMOTE OPERATIONS ----------------------------------------------------------------------------------- 25
13.1 GUI (PC UTILITY)---------------------------------------------------------------------------------------- 25
13.2 HDMI------------------------------------------------------------------------------------------------------ 26
13.2.1 Interface and Resolution---------------------------------------------------------------------- 26
13.2.2 Configuration------------------------------------------------------------------------------------- 26
13.2.3 HDMI Mode -------------------------------------------------------------------------------------- 26

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13.2.4 Review HDMI Frame--------------------------------------------------------------------------- 26
13.3 BLUETOOTH FEATURE ---------------------------------------------------------------------------------- 27
13.3.1 Simple steps to work in Bluetooth mode-------------------------------------------------- 27
13.3.2 Connection and Pairing ----------------------------------------------------------------------- 28
13.3.3 Working with Standard Host (PC, Mobile or any other device)---------------------- 28
13.3.4 General Guide----------------------------------------------------------------------------------- 28
13.4 MASS STORAGE------------------------------------------------------------------------------------------ 28
13.5 API--------------------------------------------------------------------------------------------------------- 29
14 STANDALONE OPERATION ----------------------------------------------------------------------------- 29
14.1 FILE MANAGER COMMANDS---------------------------------------------------------------------------- 29
15 REVIEWING IMAGES--------------------------------------------------------------------------------------- 31
15.1 IMAGE PROCESSING ALGORITHM VARIANTS:-------------------------------------------------------- 32
15.2 COMMANDS FOR REVIEWING IMAGES ---------------------------------------------------------------- 32
16 REVIEWING CSV FILES (FOR CUSTOM DRAWINGS) ------------------------------------------- 34
16.1 FILE FORMAT --------------------------------------------------------------------------------------------- 34
17 REVIEWING PDF FILES------------------------------------------------------------------------------------ 35
17.1 USER INDICATION---------------------------------------------------------------------------------------- 36
18 REMOTE OPERATIONS WITH ORION TI-84 PLUS------------------------------------------------ 36
18.1 REVIEW ORION TI-84 PLUS SCREEN ON GRAPHITI ------------------------------------------------ 36
18.2 IMPORTANT NOTES-------------------------------------------------------------------------------------- 36
19 SLIDESHOW MODE----------------------------------------------------------------------------------------- 36
20 FIRMWARE UPGRADE------------------------------------------------------------------------------------- 37
21 BIST MODE ---------------------------------------------------------------------------------------------------- 37
22 SYSTEM LOG ------------------------------------------------------------------------------------------------- 38
23 LIMITATIONS-------------------------------------------------------------------------------------------------- 38
24 COMPATIBILITY --------------------------------------------------------------------------------------------- 38
25 TROUBLESHOOTING -------------------------------------------------------------------------------------- 39
26 APPENDICES ------------------------------------------------------------------------------------------------- 40
26.1 APPENDIX A: REVISION HISTORY --------------------------------------------------------------------- 40
26.2 APPENDIX B: PROTO 4C UNIT SPECIFIC LIMITATIONS AND CHANGESERROR!BOOKMARK NOT
DEFINED.

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1 Introduction
Graphiti is a tactile graphic display prototype. The prototype is used either in a
standalone mode or by connecting to a PC through utility. Graphiti allows you to
draw, save and review pre-stored images from the device or PC and has the
following features:
1. 60 horizontal and 40 vertical pins to display that can be transformed to
accurately represent graphics/images
2. Reads the graphical content of files on an SD™ (Secure Digital) card for
the Stand-Alone Mode
3. Remote connectivity to PCs and mobile devices for use with a host
application
2 How the Graphiti Prototype Is Used
2.1 Stand-Alone Mode
Graphical content stored on an SD card is read in one of two ways:
1. Copied from PC to the device.
2. Drawn on the device and stored on the SD card.
In Stand-Alone mode, Graphiti displays the graphical contents of files, stored on
an SD card.
2.2 Remote Mode
Connect the device to a computer and then do one of the following:
1. Browse the image on the PC application to see on the device
2. Create images and store on the SD card of the device
The screen reader helps you to create and see the graphics as per your choice.
3 Features
Graphiti has the following features:
1. 2400 pins tactile display
2. Eight Input keys and a Space bar
3. Navigation pad with four directional buttons (Up, Down, Left, Right) and
the Select button
4. SD card slot
5. Bluetooth® wireless technology
6. HDMI port
7. USB port
8. User-replaceable, rechargeable battery
9. Power Status LED

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4 Orientation
Orientation of buttons, keys, cells, and slots is important for understanding how
the device operates and how you input and receive information on the device.
To begin with, place the device on a flat surface in front of you with the keypad
closest to you. This is the proper operational orientation.
On top surface of the unit, closest to you are the user keys. Further away from
you is the tactile display panel, composed of an array of 40 dots horizontally and
60 dots vertically. To the left of the keypad there is one LED, which indicate
power and status of the device.
On the front vertical face of the unit, closest to you, from left to right, is an SD-
card slot.

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On the left vertical face of the unit, from front to back, are the device ON/OFF
button, HDMI connector, USB-host connector, micro-USB connector, main
power-supply slider switch and the power jack. To turn on the device, move the
slider switch away from you.
Please note: Power button and power jack is on the right vertical face on the
device.
There are tactile dots underneath of sockets as shown in table below.
Power socket
1 dot
Micro USB socket
2 dots
Standard USB socket
3 dots
HDMI Socket
4 dots
These tactile dots will help you to access particular socket.
The device can be used either by connecting to a host device or in the
standalone mode for reviewing the images.
It supports the following operations in both remote and standalone modes.
1. Navigation through images
2. Zoom in and Zoom out
3. Panning through zoomed image
4. Rotate image
5. Invert image color
6. Selection of different image processing algorithm variants
7. Support for different image file types:
1. *.bmp
2. *.jpg
3. *.png
4. *.gif
5. *.tiff
6. *.svg
8. Support for pdf files.

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9. Support for customized csv files.
10.Ability to display input image properties
11.Image editing
Images can be reviewed from the host using one of the following interfaces:
1. USB
2. Bluetooth
3. HDMI
Alternatively, images can also be reviewed in standalone mode from the SD card
and/or USB stick.
5 User Interfaces
Inputs can be given to the system through the following interfaces:
1. Device Keypad
2. Touch panel
3. USB
4. HDMI
5. Bluetooth
6. External Storage Media (SD Card and USB Drive)
7. PC keyboard
5.1 Device Keypad
Moving towards the top and near to you, find a row of three keys, with a wider
key in the middle. The wide key is the Space bar. The Dot 7 input key is to the
left of the Space Bar, and the Dot 8 input key is to the right of the Space Bar.
Above the three keys, is a navigation pad in the middle, between the Braille Input
keys and Space bar. The navigation pad contains four directional arrow buttons
(Up, Down, Left, Right) and the Select button.
The six traditional braille input keys are aligned horizontally above the navigation
pad and below the display, Dots 3 2 1 on the left and Dots 4 5 6 on the right.
In short, the keypad layout is as shown in the figure below.
DOT 3
DOT 2
DOT 1
UP
DOT 4
DOT 5
DOT 6
LEFT
SELECT
RIGHT
DOWN
DOT 7
SPACE/CHORD
DOT 8
5.2 Touch Panel
The touch panel provides control and navigation inputs for performing various
operations in local as well as in remote mode.
Draw mode allows you to create a new image or edit an existing one. Refer to
Touch feature for more details.

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5.3 USB
There are two USB ports in Graphiti, one for the USB host and the other for the
USB device functionality.
Graphiti supports USB classes as shown below:
In Host mode, Mass storage class and
In Device mode
1. HID
2. Serial (VCP)
3. Mass-storage class
You can connect the USB stick to the unit’s host port and the PC to the USB
device port.
The driver installation in a host PC is necessary in USB serial mode. If Graphiti is
connected to the internet enabled PC, it will automatically install the device
driver. Automatic driver installation is however, recommended. You can also refer
“Graphiti Serial (VCP) Driver Installation Guide” for installing the driver manually.
5.4 HDMI
A standard HDMI socket allows connection to any HDMI source, such as a
computer, using commonly available HDMI cables. In HDMI mode, operations
like zoom, navigate, edit, etc. can be performed on the captured image. For more
information, refer HDMI section.
5.5 Bluetooth
Graphiti has a Bluetooth interface that provides wireless communication between
the hosts. For example, between PC or a mobile device and Graphiti. Once
paired and connected with the host, you can review images using the currently
available PC software GUI or through a custom GUI (using the standard API).
Refer Bluetooth for more details.
5.6 External Storage Media (SD Card and USB Drive)
The device supports SD cards and USB drives for the storage media. Both, SD
card and USB is shown as two separate storage drives in file manager, when
inserted in the device. You can perform operations like cut, copy, paste, rename,
image editing and reviewing and navigation among the files and folders.
In addition, the device supports file search operations. Type the initial letters of
the file name for the device to automatically start searching the files starting with
those letters in the current directory. The default language for any file and folder
name is English (US).
Graphiti uses standard full-size SD cards from 4GB to 32GB in capacity. The
card must be formatted as FAT32. There is no way to format a card on the

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device. Most cards come already formatted. However, you can format one as
FAT32 on a desktop computer for use with Graphiti.
5.6.1 Error Handling
The device shows all error messages in the message bar.
1. If there is no SD card or USB drive inserted, the device shows, "no
storage media".
2. If there are no files on the SD card/USB drive, the device shows "no files".
3. If there is an error in reading the storage device, the device shows
"storage media err xx", where xx is the error number.
When a storage media is removed from the device, any ongoing activity (such as
reading/editing/copying etc.) gets cancelled immediately and the device displays
drive removal message.
5.7 PC keyboard
Once the device is connected with the user GUI, the navigation controls provided
in utility can also be operated using keys on the PC keyboard. A few keys share
dual functionality, which can be activated under certain conditions. For example,
the up/down arrow keys are used to scroll through image list as well as navigate
the pan window after applying the zoom function on the image.
Note that the PC utility needs to be active in order to use PC keyboard with the
device.
6 Powering ON and OFF
To power On the device, follow the steps mentioned below.
1. Plug the power cord into the power jack and turn on the main supply.
2. Power availability is indicated by the red LED.
3. Connect the micro-USB cable between the main USB port and the PC
(Optional).
4. Press the power button for two seconds. The device will emit a single
long vibration pulse.
5. The unit emits vibration pulses once in every two seconds while the
device initialization.
6. Once initialized, again the device will emit a single long vibration pulse.
The red LED will turn green indicating that the device is ready for use.
7. The device shows one of the following messages in the message bar (If
the message bar is enabled previously):
1. serial mode
2. hid mode
3. Name of the inserted storage device. i.e. SD mode
4. hdmi mode
5. bluetooth mode
6. mass storage mode
8. Start the PC utility (Optional).

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To power Off the device, follow the steps mentioned below.
The device can be turned off by pressing the power button for 2 seconds. On
pressing the power button, the device
1. Emits two short vibrations
2. Displays “shutting down” message for 5 seconds and then disappears.
(Please note, the power off time is 15-20 seconds after the message
disappears.)
3. Sets all the pins on the display to home position (below the surface).
The unit emit vibration pulses once every two seconds while powering off. After
the device is shut down completely, it again gives two short vibrations and turns
off the green LED.
The unit will enter the ghost mode if the charger is plugged and you turn off the
device. During Ghost mode, the device will automatically shut down once it is
fully charged or if the charger is removed.
Pressing the power off key for 10 seconds will turn off the device forcefully.
6.1 Reset
Following are the ways to reset or turn off the system.
To…
Do this on the Device
Reboot System (Up to unit -11)
Press and hold the Down Arrow key and
tap the Dot 8 key
Reboot System (Unit -12 and later
units)
Press and hold the Dot 8 key and tap the
Power button
Turn Off the System Forcefully
Press Power key for 10 seconds
6.2 Sleep
This feature puts the device into the low power consumption mode if there is no
user activity for 50 minutes while in standalone mode. Device can be put in sleep
mode manually by tapping the power button while in remote or standalone mode.
Sleep time-out is configurable from the preference menu.
Once the device enters sleep mode, it clears the display content and turns off the
green LED with a single short vibration. However, you can configure settings in
preference menu to retain the display content as and when the device enters
sleep mode.
To exit the sleep mode, tap the power button. The LED turns green with a single
long vibration pulse. The device resumes its last activity or shows the last
opened file from the storage media if it was in local mode. Similarly, if it was in
USB HID, VCP (Serial) or HDMI mode, it will display the last opened file.
Note:

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1. Bluetooth does not connect automatically on exiting sleep mode. It should
be connected manually only.
2. The device will show last opened file only if the ‘keep display’ option is
enabled from the preference menu.
6.2.1 Automatic Power Down
In local mode, If the device is in sleep mode and there is no activity for 50
minutes, the device shuts down automatically.
In remote mode, the device will shut down automatically after APD time without
entering the sleep mode.
The device will show “automatic power down” message on the display and will
shut down after APD timeout.
You can change the APD time (increase or decrease) or disable it from the
preference menu.
7 Charging the Device
To charge the device, plug the power cord into the power jack. The display
shows the message "charger connected" or "charger unplugged" with a single
short vibration pulse, when the charger is connected or unplugged, respectively.
Note: The device shows these messages only when it is On. If the device is OFF
when the charger is connected or disconnected, then the device will emit a single
short vibration and will show charging indication by Red LED. The device can be
used while charging.
7.1 Battery
The power percentage can be checked from the Menu. The Menu will show
“battery xx%”, where xx is the percentage number. It shows "charging xx%" when
the unit is charging and “low battery”, when the battery is low. Press Dot 7 to exit
the Menu.
When the battery reduces to 10%, the device will emit a single long vibration
pulse once in every minute to indicate low battery. Also, the last two dots of the
40th row on the display blinks on and off. This behavior is normal for indicating
low battery. If the battery gets to 0% and the charger is not plugged, it gives two
long vibration pulses and turns off.
Note:
1. If the device battery is fully drained, it will take nearly 12 minutes to turn on
after the charger is connected.
2. The unit can be used with battery power.

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8 Message Bar
By default, the entire display area is used for displaying graphics. However, if
there are any system messages to be shown, the top four rows of the tactile
display become the message bar. You can change the message bar placement
to bottom of the display area (bottom four rows) from the preference menu.
The message bar will show messages like file or folder name, information and
error messages and is active for only 15 seconds. For instance, when you open a
file, the device shows the file name on the message bar and the image is
displayed in the remaining area of the display. After 15 seconds, the device
automatically hides the message bar and the contents are shown on the entire
display.
Note:
1. The messages will be shown in the computer braille code.
2. The system messages will be in small letter only. The file/image name will
be displayed as it is.
3. You can enable/disable the message bar and change its timeout value
from the preference menu.
4. Shortcut key to enable/disable the message bar is Space + Dot 3.
There are some messages which can be cleared by pressing Dot 7 only. These
messages are:
1. charger connected/ unplugged
2. hdmi cable inserted/ unplugged
3. usb drive inserted/ removed
4. sd card inserted/ removed
5. upgrade successful/ timeout
9 Vibration Indication
Graphiti has vibration indications for different scenarios as per the table below.
The unit will give tone indications along with vibration indication.
User Scenario
Mode/Sub Mode
Vibration Indication
Device Power On
Power On
Single long vibration
Device Power Off
NA
Two short vibrations
Entering sleep mode
Sleep Mode
Single short vibration
Exiting sleep mode
Sleep Mode
Single long vibration
Entering any sub-mode (like
Draw, Erase, Review, Gesture
Mode)
Remote/Local
Single short vibration
Exiting any sub-mode
Remote/Local
Two short vibrations
Change in device mode
Remote/Local
Single short vibration
Change in image
Local
Single short vibration

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File saving Indication
Remote/Local
Single short vibration
File saving error
Remote/Local
Single long vibration
SD card insertion error
Remote/Local
Single long vibration
File navigation limits
Remote/Local
Two short vibration
Canvas block extension or
Navigation limit
Draw Mode
Single long vibration
Charger insertion/removal
Remote/Local/Power
Off
Single short vibration
Battery status is 10% or less
Remote/Local
Single long vibration
once in a minute
Battery status is 0%
Remote/Local
Two long vibration
(shutdown indication)
Device internal error
Remote/Local
Two short vibration
followed by long
vibration once in every
5 seconds
10 Preference Menu
The preference menu is used to view and update the device settings. For
example, you can switch to different operating modes, enable or disable the
message bar and so on.
10.1 Key controls for the preference menu
Key controls for the preference menu are as shown in the table below.
#
Key
Key Function
1
Space + Dots 7 8
Open menu
2
Up arrow
Move to the previous menu item
3
Down arrow
Move to the next menu item
4
Left arrow
Left scrolling in case there are more characters on
the left side
5
Right arrow
Right scrolling in case there are more characters on
the right side
6
Select
Select the item
7
Dot 7
Exit the menu
10.2 Menu items
The following table shows the menu and sub-menu items.
#
Item name
Choices
Resulting message
display
(If not selected / If
selected)
Description

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1
battery status
NA
battery: xx%
or
charging: xx%
Device will show battery status
like “Battery: 80%” without
charger and “Charging: 80%”
with charger.
2
firmware
version
NA
xx.xx.xx.xxxx
The current software version is
xx.xx.xx.xxxxx
3
reset defaults
NA
NA
Resets settings to default and
shows first menu item
4
serial number
NA
MB xx xx xxxxx
The current unit serial number
is MB xx xx xxxxx
5
usb
serial
(default)
serial / serial
USB mode “Serial” selected
hid
hid / hid
USB mode “HID” selected
6
bluetooth
on
(default)
on / on
Bluetooth device is
discoverable
off
off / off
Bluetooth device is not
discoverable
7
pair
just works
(default)
just works / just works
Allows the host to pair with the
device without your interaction
confirm code
confirm code / confirm
code
You need to confirm the code
shown on the device message
bar with the code shown on the
host device
8
mode
stand-alone
stand-alone / stand-
alone
Enables local mode
usb
(default)
usb / usb
Enables last HID/Serial remote
mode.
bluetooth
bluetooth / bluetooth
Enables remote mode and
turns on BT
hdmi
hdmi / hdmi
Enables remote mode for HDMI
interface
mass storage
mass storage / mass
storage
Activates the device as a mass
storage device
9
message bar
status
five seconds
five seconds / five
seconds
Displays message and auto
hides after 5 seconds
ten seconds
ten seconds / ten
seconds
Displays message and auto
hides after 10 seconds
fifteen
seconds
(default)
fifteen seconds /
fifteen seconds
Displays message and auto
hides after 15 seconds
auto hide off
auto hide off / auto
hide off
Disables auto hide message
bar

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disable
disable/ disable
Disables the message bar
10
message bar
position
top
(default)
top / top
Displays message bar on top of
the panel
bottom
bottom / bottom
Displays message bar at the
bottom of the panel
11
sleep time
ten minutes
ten minutes / ten
minutes
The device will enter sleep
mode if there is no activity
during the time mentioned.
twenty
minutes
twenty minutes /
twenty minutes
fifty minutes
(default)
fifty minutes / fifty
minutes
hundred
minutes
hundred minutes /
hundred minutes
disable
disable / disable
Disables automatic sleep mode
12
apd time
ten minutes
ten minutes / ten
minutes
Sets automatic power down
time
twenty
minutes
twenty minutes /
twenty minutes
fifty minutes
(default)
fifty minutes / fifty
minutes
hundred
minutes
hundred minutes /
hundred minutes
disable
disable / disable
Disables the APD
13
display config-
sleep
keep display
keep display / keep
display
Keeps contents as it is on the
device display in sleep.
clear display
(default)
clear display / clear
display
Clears display at the time of
sleep.
14
hdmi frame
rate
one second
(default)
one second / one
second
Shows HDMI frame after every
1 second in HDMI mode.
five seconds
five seconds / five
seconds
Shows HDMI frame after every
5 seconds in HDMI mode.
ten seconds
ten seconds / ten
seconds
Shows HDMI frame after every
10 seconds in HDMI mode.
fifteen
seconds
fifteen seconds /
fifteen seconds
Shows HDMI frame after every
15 seconds in HDMI mode.
15
hdmi frame
resolution
640x480
(default)
640x480 / 640x480
Sets the HDMI frame resolution
to 640x480
720x480
720x480 / 720x480
Sets the HDMI frame resolution
to 720x480

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800x600
800x600 / 800x600
Sets the HDMI frame resolution
to 800x600
1024x768
1024x768 / 1024x768
Sets the HDMI frame resolution
to 1024x768
1280x720
1280x720 / 1280x720
Sets the HDMI frame resolution
to 1280x720
16
ti-84 axes tick
options
height level 1
(default)
height level 1 / height
level 1
Sets the axes and axes-tick
information at pin height level 1
in image received from Orion
TI-84 Plus
height level 2
height level 2 / height
level 2
Sets the axes and axes-tick
information at pin height level 2
in image received from Orion
TI-84 Plus
height level 3
height level 3 / height
level 3
Sets the axes and axes-tick
information at pin height level 3
in image received from Orion
TI-84 Plus
height level 4
height level 4 / height
level 4
Sets the axes and axes-tick
information at pin height level 4
in image received from Orion
TI-84 Plus
17
ti-84 graph
data options
height level 1
height level 1 / height
level 1
Sets the graph information at
pin height level 1 in image
received from Orion TI-84 Plus
height level 2
height level 2 / height
level 2
Sets the graph information at
pin height level 2 in image
received from Orion TI-84 Plus
height level 3
(default)
height level 3 / height
level 3
Sets the graph information at
pin height level 3 in image
received from Orion TI-84 Plus
height level 4
height level 4 / height
level 4
Sets the graph information at
pin height level 4 in image
received from Orion TI-84 Plus
18
tone indication
enable
enable / enable
Enables the tone indication
(Supported in A0008 and later
units)
disable
(default)
disable / disable
Disables the tone indication
(Supported in A0008 and later
units)
19
clock
configuration
date
dd-mm-yyyy / dd-mm-
yyyy/ dd-mm-yyyy
Allows you to modify the date

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time
hh:mm:ss / hh:mm:ss /
hh:mm:ss
Allows you to modify the time
20
slideshow
interval
one second
one second / one
second
Shows new image after every 1
second in Slideshow mode.
five seconds
(default)
five seconds / five
seconds
Shows new image after every 5
seconds in Slideshow mode.
ten seconds
ten seconds / ten
seconds
Shows new image after every
10 seconds in Slideshow mode.
fifteen
seconds
fifteen seconds /
fifteen seconds
Shows new image after every
15 seconds in Slideshow mode.
21
file sorting
options
name
(default)
name / name
Files in the file list are sorted in
alphabetical order
date
date / date
Files in the file list are sorted as
per their last modified date
size
size / size
Files in the file list are sorted
based on their size
last
last / last
Files in the file list are sorted
based on the last time they
were accessed
ascend
(default)
name ascend / name
ascend
Arranges files from first to last.
This option applies to Name,
Date, Size and Last options.
descend
name descend /
name descend
Arranges files from last to first.
This option applies to Name,
Date, Size and Last options.
General notes:
1. The device clears the display on entering the preference menu.
2. By default, the Menu shows the first menu item on the message bar.
3. Pressing [Select] over an already selected item will not make any changes
to it.
4. It is not possible to deselect an item. You need to select another option.
5. On exiting the menu, device will return to file manager, file review or
remote mode depending on your last activity.
6. Currently selected menu item is indicated by an underline (with dot 7 and
dot 8 raised).
7. Pressing Up/Down Arrows or Select button will not function on the menu
items having no sub-items such as, software version.
8. On scrolling beyond the first or last menu item, the list rolls over.
9. The device will switch to the selected mode as soon as the menu item is
selected.

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11 Clock Configuration
Graphiti has the clock configuration which helps to configure date and time of the
device through the preference menu. It can also be configured using the Graphiti
standard API explained in the API command document.
Select the ‘date’ option in the preference menu to check the present device date.
It will be displayed in DD-MM-YYYY format, with the cursor set on DD. Similarly,
on selecting the ‘time’ option, the device displays the present device time in HH:
MM: SS format with cursor set on HH. To modify the date and time, use the
Arrow keys of the device keypad. To set the date and time, press ‘Select’key to
apply the changes or dot 7 key to discard the changes.
The device supports 24hrs format for time and year ranges from 2015 to 2037.
The device gives a long vibration pulse in case of invalid configuration.
12 Touch Features
The touch panel provides control and navigation inputs for performing various
operations in local mode as well as in remote mode.
For the touch interface, you can select one of the two sub-modes as mentioned
below:
1. Gesture
2. Draw
12.1 Touch Gestures
By default, the device is in review mode. Press Space + g (Dots 1 2 4 5) key
combination to enable the gesture mode. Press the same key combination again
to disable it and enable the review mode to review the updated image on the
panel.
The gestures supported by the device is broadly categorized as follows:
1. Single finger swipe in four directions (Up, Down, Left and Right)
2. Double taps
While viewing images, use gestures to navigate within the image (for zoomed
view of the image) or navigate to the next/previous image. Double tap to move
the location of a zoomed image to the center of the device display.
Note: Gestures are not supported in draw mode.
12.2 Draw feature
Draw mode helps to create a new image or edit an existing one. Draw mode can
be enabled by pressing Space + Dot 1. Drawing is performed using the touch
interface of the unit.

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Graphiti allows to switch between the Draw and Review mode any time, for
reviewing the drawn patterns. Refer section ‘Reviewing Drawings’ for more
information on Reviewing Mode.
Note: Draw mode is not allowed when the device is in mass-storage mode. In
such a case, pressing Space + Dot 1 will give a single long vibration.
Following are the key controls in draw feature:
Description
Key
Additional Information
Enter or Exit from
Draw Mode
Space + Dot
1
To enter or exit draw mode
Create new image
Space + n
(Dots 1 3 4 5)
To create a new drawing using Space + n
Enable or Disable
Erase
Dot 5
To erase a particular pixel(s) on the panel
Enable or Disable
Review Mode
Dot 6
To enable or disable review mode using
this key. Disabling the review mode, re-
enables the draw mode.
Erase entire image
Dot 7
To erase the entire image by using this
key. The device will ask for your
confirmation. Press Dot 8 to confirm and
Dot 7 to cancel erase.
Save File (Full
image)
Space + s
(Dots 2 3 4)
To save the entire drawing on the SD
card.
Save File
(Screenshot)
Space + S
(Dots 2 3 4 7)
To save 40 x 60 image only. This feature
is not available for CSV file.
Height Level 1
Dot 1
Selects pixel height level 1 for draw mode
Height Level 2
Dot 2
Selects pixel height level 2 for draw mode
Height Level 3
Dot 3
Selects pixel height level 3 for draw mode
Height Level 4
Dot 4
Selects pixel height level 4 for draw mode
When the draw mode is enabled, pins are raised at points of the display where
touch input is detected. The height of the pin raised is determined by the height
level adjusted by you using the key controls described in the table above.
Default pin height is level 4 (maximum). In order to adjust the height of an
already raised pin, select the desired height level using key controls (Dot 1/Dot
2/Dot 3/Dot 4) and touch the pins of which the height is to be altered.
To reflect the current drawing of the display on the Graphiti PC application in real
time, connect the application through either USB or Bluetooth. This feature is
basically useful for a person to observe what a visually impaired person is
drawing. For instance, a teacher observing what a student is drawing.

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12.2.1 Erasing
To enable the Erase mode from the Draw mode press Dot 5. When the erase
mode is enabled, pins are set to their down positions at the points of display
panel where touch input is detected. This feature makes the corrections in the
drawing. To disable the erase mode and go back to draw mode, press Dot 5
again.
To clear the contents of the entire display, press Dot 7. A “confirm action”
message is displayed on the device. Press Dot 8 to confirm and erase the entire
image or Dot 7 to cancel the action and continue drawing.
Note: Confirming the erase by pressing Dot 8 will lower down all the pins to their
bottom-most positions.
12.2.2 Saving drawings
To save the Drawings in the current directory of the SD card / USB Drive, press
SPACE + S (Dots 2 3 4) key combinations.
To save the currently displayed part of the image only (i.e. 40x60 screenshot),
press SPACE + S (Dots 2 3 4 7) key combinations. The device will show an edit
box in the message bar with the default file name. To rename the file name using
the braille keys, navigate through the file names using Left and Right Arrow keys.
To discard the file saving, press Dot 7 + Select keys.
Note: Once the edit box is enabled, only the file name can be entered. The
device will not respond to any key commands. For example, if Dot 2 is pressed,
the device will show ‘1’ in the edit box instead of zooming the image.
After renaming the file, press Select key to save the image file and go back to the
last sub-mode of the draw mode.
Note:
1. If the file is not renamed, it will be saved with the default name
“NewImage_x.bmp”. If the default file name already exists, then the device
will automatically append the appropriate number to file name. For
example, “NewImage_1.bmp”.
2. The device will save images in the BMP file format only.
3. In order to save a drawing to the PC, use the option available on the PC
GUI “Save to PC”.
12.2.3 Automatic File Saving
1. Graphiti automatically saves the last edited drawing in following instances:
1. When exiting the drawing mode
2. When directly switching the device mode from draw mode
3. When powering off the device from draw mode
4. When creating a new drawing.