Orbit Research GRAPHITI User Manual
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Orbit Research GRAPHITI User Manual

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GRAPHITI
– User Manual
th
25
October 2021
Version 1.0

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Summary of Contents for Orbit Research GRAPHITI

  • Page 1 GRAPHITI – User Manual October 2021 Version 1.0...

  • Page 2: Table Of Contents

    Graphiti – User Manual Version 1.0 Contents INTRODUCTION ------------------------------------------------------------------------------------------------ 4 HOW THE GRAPHITI PROTOTYPE IS USED ---------------------------------------------------------- 4 ------------------------------------------------------------------------------------- 4 TAND LONE --------------------------------------------------------------------------------------------- 4 EMOTE FEATURES ------------------------------------------------------------------------------------------------------- 4 ORIENTATION -------------------------------------------------------------------------------------------------- 5 USER INTERFACES ------------------------------------------------------------------------------------------ 7 ------------------------------------------------------------------------------------------- 7 EVICE EYPAD ---------------------------------------------------------------------------------------------- 7...
  • Page 3 Graphiti – User Manual Version 1.0 13.2.4 Review HDMI Frame --------------------------------------------------------------------------- 26 13.3 ---------------------------------------------------------------------------------- 27 LUETOOTH EATURE 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...

  • Page 4: Introduction

    Version 1.0 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.

  • Page 5: Orientation

    Graphiti – User Manual Version 1.0 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.
  • Page 6 Graphiti – User Manual Version 1.0 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.

  • Page 7: User Interfaces

    Graphiti – User Manual Version 1.0 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.

  • Page 8: Usb

    Graphiti – User Manual Version 1.0 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.

  • Page 9: Error Handling

    Graphiti – User Manual Version 1.0 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.

  • Page 10: Reset

    Graphiti – User Manual Version 1.0 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 Emits two short vibrations Displays “shutting down”...

  • Page 11: Automatic Power Down

    Graphiti – User Manual Version 1.0 Bluetooth does not connect automatically on exiting sleep mode. It should be connected manually only. The device will show last opened file only if the ‘keep display’ option is enabled from the preference menu.

  • Page 12: Message Bar

    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...

  • Page 13: Preference Menu

    Graphiti – User Manual Version 1.0 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 Draw Mode...
  • Page 14 Graphiti – User Manual Version 1.0 Device will show battery status battery: xx% like “Battery: 80%” without battery status charger and “Charging: 80%” charging: xx% with charger. firmware The current software version is xx.xx.xx.xxxx version xx.xx.xx.xxxxx Resets settings to default and...
  • Page 15 Graphiti – User Manual Version 1.0 disable disable/ disable Disables the message bar Displays message bar on top of top / top (default) the panel message bar position Displays message bar at the bottom bottom / bottom bottom of the panel...
  • Page 16 Graphiti – User Manual Version 1.0 Sets the HDMI frame resolution 800x600 800x600 / 800x600 to 800x600 Sets the HDMI frame resolution 1024x768 1024x768 / 1024x768 to 1024x768 Sets the HDMI frame resolution 1280x720 1280x720 / 1280x720 to 1280x720 Sets the axes and axes-tick...
  • Page 17 Graphiti – User Manual Version 1.0 hh:mm:ss / hh:mm:ss / time Allows you to modify the time hh:mm:ss one second one second / one Shows new image after every 1 second second in Slideshow mode. five seconds five seconds / five...

  • Page 18: Clock Configuration

    Version 1.0 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.
  • Page 19 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.

  • Page 20: Erasing

    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 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.

  • Page 21: Reviewing Drawings

    USB drive inserted in the device. 12.2.6 Modifying existing images Existing files can be edited from the storage media of Graphiti. In order to do so, first open a file that requires editing and then enable the draw mode to edit the file.

  • Page 22: Canvas

    12.2.8.1 Extending Image Size Graphiti provides an option of extending the image size. For example, if you wish to extend the boundaries of the current drawing as shown below in Figure 1, press the hot key sequence (e.g. Space + Right key). This will add 60 columns on the right side of the current drawing and the extended image becomes 40x120 as shown below in Figure 2.
  • Page 23 Graphiti – User Manual Version 1.0 (Block-1) 40x120 (Block-2) 40x120 Figure-3: 80x120 Resolution The following key controls are available for the canvas feature: Description Add a single row canvas to the top side (after the navigation limit) / Jump to an already existing upper row...

  • Page 24: Undo Redo Feature

    Graphiti – User Manual Version 1.0 For example, if you are interested in extending the 1000x1000 (Rows x Columns) image at maximum zoom level, adding one canvas block at the top of the image will change the image resolution to 1040x1000. Similarly, if a canvas block is added on the right side of the image, then the image size will become 1000x1060.

  • Page 25: Remote Operations

    Graphiti – User Manual Version 1.0 Graphiti can undo last 15 pixels of the drawing 10 times. It retains the last pixel state in undo. For example, if you draw a pattern with pixel height 4 and change the pattern with pixel height 3 and then perform the undo operation, the device will reset the pixel height of the last 15 pixels to 4.

  • Page 26: Hdmi

    13.2.2 Configuration Following are the steps to configure HDMI to work with Windows machine. 1. First connect Graphiti to the host using HDMI cable and press SPACE + Dot 6 for HDMI mode. 2. For windows PC, go to Advanced display settings → Multiple displays →...

  • Page 27: Bluetooth Feature

    Graphiti – User Manual Version 1.0 captured frame, press Select key. For better viewing, use the keys for zoom in, zoom out, invert and rotate the captured frame. For more details, refer Reviewing Images. After zooming, panning can be done through the arrow keys. You can also use swipe gesture for panning after zoom.

  • Page 28: Connection And Pairing

    Once pairing request is initiated by the host, the passcode is displayed on Graphiti message bar, which will be similar to the passcode shown on the host device. Accept the pairing request from host by click “connect” and device by pressing Dot 8 from the device keypad.

  • Page 29: Api

    It is possible for third parties to create applications on any computing platform (computers, mobile devices, Raspberry Pi boards, etc.) to communicate with Graphiti, using its standard API. The complete API is described in a separate document. The API allows sending image data to the device and receiving the following data from the device: 1.
  • Page 30 Graphiti – User Manual Version 1.0 Press [Select] key to open the file or folder. If it is file then contents will be displayed on tactile Open a file or Select display. folder Available Message bar on tactile display shows the file name.

  • Page 31: Reviewing Images

    Available cut/copy/delete operation selection Graphiti gives an option of Fast searches by typing any letter. For example, on pressing dots 1 and 2, file manager will show the first file name starting with the letter b. Once the image is opened, the device will switch its keypad functionalities for reviewing the images.

  • Page 32: Image Processing Algorithm Variants

    Graphiti – User Manual Version 1.0 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 15.1 Image Processing Algorithm Variants: There are 6 different processing variants which can be changed by pressing ‘Select’...
  • Page 33 Graphiti – User Manual Version 1.0 Zoom out max: Resets the Zoom Out Alt + Minus Select + Dot view to its default state Available Up Arrow Review previous file after key after Dot 3 image is zoomed Available pressing Alt...

  • Page 34: Reviewing Csv Files (For Custom Drawings)

    Graphiti – User Manual Version 1.0 Moves to the top right corner Right Arrow of the image Available Available + Up Arrow Available Moves to the bottom left corner Right Arrow of the image Available Available + Down Available Arrow Ctrl+ ‘A’...

  • Page 35: Reviewing Pdf Files

    Graphiti – User Manual Version 1.0 Value Blinking Rate No Blinking 100ms 200ms 300ms … … 5 seconds This file contains two sections namely “Pixel Height” and “Blinking rate”. Pixel height section contains the height value of each pixel and blinking rate section contains the blinking interval for each pixel.

  • Page 36: User Indication

    Long vibration pulse 18 Remote Operations with Orion TI-84 Plus Graphiti also can also be operated using the Orion TI-84 Plus device as per the steps below: 1. Connect Orion TI-84 Plus with Graphiti using the OTG cable. Use HOST USB port on the Orion TI-84 Plus and micro USB port on the Graphiti.

  • Page 37: Firmware Upgrade

    20 Firmware Upgrade Graphiti firmware can be upgraded by copying the firmware binary to SD card and following the upgrade procedure. The firmware binary can be copied to SD card using the following ways: 1.

  • Page 38: System Log

    6. ‘Recent file’ feature will not work when SD card is write-protected. 24 Compatibility In Graphiti, the USB interface (VCP(Serial) and HID mode) are tested and verified with Windows 10. It is expected to work with Windows 7 and 8 as well as with the other host platforms (Mac, iOS, Android, Linux, etc.) provided...

  • Page 39: Troubleshooting

    25 Troubleshooting In case the device does not work as expected, the following steps will help you to troubleshoot the issue. 1. Graphiti in either of the USB mode: 1. Check whether the external power supply is properly connected or not.

  • Page 40: Appendices

    Graphiti – User Manual Version 1.0 26 Appendices 26.1 Appendix A: Revision History Rev. Date Description of Changes Author 6th October 2017 Removed non- supported features 10th October 2017 Minor correction 23rd October 2017 Updated user GUI section 28th October 2017...
  • Page 41 Graphiti – User Manual Version 1.0 0.25 August 2018 Updated inter document links Added “Orion TI-84 Plus Interface” 0.26 September 2018 details Updated preference menu for Orion 0.27 October 2018 TI-84 Screen Settings and modified ‘zoom in max’ key 0.28...

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