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DIVIMATH HDZERO User Manual

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Revision
Date
1.0
Nov 24, 2022
1.1
Jan 6, 2023
1.2
Jan 13,2023
1.3
Mar 25,2023
1.4
April 3, 2023
1.5
April 29, 2023
1.6
June 16, 2023
1.7
Dec 12, 2023
1.8
May 7, 2024
1.9
Jun 27, 2024
2.0
July 15 2025
HDZero Goggle User Manual
Description
Initial draft
18650 battery cases and 6S power in
Added notes for
Added firmware update note for MacOS
Added notes for expansion module installation
Added notes for DVR, WIFI and firmware update steps
Added notes for RTC and no dial for tuning channel
Added module bay power instructions
Modified instruction for WIFI streaming and RTC by SX
Added low band setting description
Named the firmware package as yyyymmdd
Moved the emergency firmware to the recovery folder
Added ELRS backpack and Goggle 2
For more product information, please visit:
www.hd-zero.com
All Rights Reserved

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Summary of Contents for DIVIMATH HDZERO

  • Page 1 HDZero Goggle User Manual Revision Date Description Nov 24, 2022 Initial draft 18650 battery cases and 6S power in Jan 6, 2023 Added notes for Added firmware update note for MacOS Jan 13,2023 Added notes for expansion module installation Mar 25,2023...

  • Page 2: Table Of Contents

    ESP32/Backpack Module ......15 Setup ..............5 Update ELRS backpack firmware ..... 15 Power Switch ..........5 Bind HDZero Goggle and ELRS TX .... 16 Power Input/Consumption ......5 Start/Stop DVR Using a Switch ....16 XT60 Cable ............. 5 Set Channel Number Using Radio ....

  • Page 3: Introduction

    Introduction The HDZero Goggle is an all-in-one FPV goggle for digital, analog and HDMI video. Please take the time to read through this operating manual thoroughly before using. Diagram Features ● Power on/off sliding switch – be confident that the goggle is on or off at a glance or by feel ●...

  • Page 4: Specification

    ● Full HD 1920x1080p 90fps OLED micro display ● FOV: 46deg ● Input voltage: 7V-25.2V (2S-6S) ● Power consumption: 14.5W (with HDZero RF on), or 8.4W (with AV In) ● Weight: 294g for Goggle 1, 305g for Goggle 2 ● Dimension: 185x81x66mm Included Accessories ●...

  • Page 5: Setup

    Setup The HDZero goggle has many features that can be customized to the individual pilot. Power Switch There is a sliding power switch on the right side of the goggles. You may use it to turn on/off the goggle, or just leave it on and plug/unplug the DC barrel plug to turn the goggle on and off.

  • Page 6: Face Plate/Padding Foam

    2. Some types of XT60 cable, i.e., HDZero VRX cable, has integrated DC regulators. Make sure that cable is able to output enough current as indicate at Table 1. The goggle won’t boot or keep rebooting if there if that happens.

  • Page 7: Hdmi Output

    HDMI in Not supported AV input The HDZero goggle supports AV input through a 3.5mm AV jack. The pinout is shown in FIG 1. The AV input cable is not included. It is available on the HDZero shop and other online stores.

  • Page 8: Expansion Module Bay

    WIFI modules. Notes: 1. HDZero goggle provides 5V power to analog receiver and in-takes its CVBS output. There are no control signals from the goggle to analog receiver. You need to tune analog receiver’s channel and menu setting by its own buttons and display.

  • Page 9: Fw Port

    The FW port is used for flashing firmware to HDZero VTXes. A 150mm programming cable is included. The instruction for flashing VTX firmware is described on HDZero Firmware Update section. Open Source The HDZero Goggle is open source. You can find the SoC Firmware and Goggle CAD files at Github.

  • Page 10: Hdzero Goggle Operation

    HDZero Goggle Operation This section describes the general operation of the HDZero goggle. Controls Dial Pad Enter Button Func Button Video view and Menu view...

  • Page 11: Video Source

    Wait for a long press of the Enter button to exit to the main menu Notes: 1. To enable low band, (1)VTX side: Set to Lowband at VTX menu, (2) Goggle side: set Source -> HDZero Band to Lowband. Here are the center frequencies for L1-L8.

  • Page 12: Fan Management

    The HDZero goggle uses a novel approach to process the analog input, resulting in improved analog video quality: It uses a video decoder with an adaptive comb filter to separate Y/C from the composite video; It uses a deinterlacer to convert fields to frames, instead of doubling the interlaced lines;...

  • Page 13: Image Settings

    2. It is recommended to use automatic mode for side fans, and set top fan speed as desired level. Image Settings The HDZero goggle has an image processor to fine tune video before feeding to DVR and display. It includes:...

  • Page 14: Dvr

    The HDZero goggles integrates a DVR for both the HDZero digital receiver and analog input. These are the DVR options: Automatic Record: DVR will start to record when it detects there is valid HDZero RF on the current channel, and stops recording when the signal is no longer detected.

  • Page 15: Playback

    Tune Channel By Dialing up/down, video channel number can be tuned on video mode for HDZero receiver, or built-in analog receiver on Goggle 2. However, this can be disabled by putting a file named as “no_dial.txt” on SD card root directory when booting up.

  • Page 16: Bind Hdzero Goggle And Elrs Tx

    After a few seconds, the goggle will display success if the binding is complete. Start/Stop DVR Using a Switch The HDZero goggle supports start/stop recording using a switch on radio. Here are steps to setup on Goggle and Radio: 1. Goggle: Record Option -> Record Mode = Manual...

  • Page 17: Set Channel Number Using Radio

    Goggle DVR. Set Channel Number Using Radio The HDZero goggle supports set channel number using ExpressLRS Lua on radio. Here are steps to setup on Radio: 1. Enter Radio ExpressLRS Lua -> VTX Admin 2.

  • Page 18: Wifi Module

    WiFi Module The HDZero Goggle 1 expansion module V2 and Goggle 2 supports WIFI video streaming to smart phone, desktop or laptop. Multiple devices can wirelessly connect to the goggle and receive the video simultaneously. Control over the behavior of the WiFi module is completely managed from within the WiFi Module page.

  • Page 19: System Fields

    Finally, if either page is modified “Basic” or “Advanced”, the user must return back to the “Basic” page and select “Apply Settings” in order to configure the WiFi Module. In order to establish a wireless video stream with the HDZero Goggles via a smartphone or computer, the user must follow these steps:...

  • Page 20: Real Time Clock

    1. The “Basic” page within the WiFi Module page will contain the necessary information in order to establish communications with the HDZero Goggles: a. Host Mode – Refer to the SSID and Password fields in order to join the HDZero Goggle wireless network.

  • Page 21: Hdzero Firmware Update

    Recovery/HDZGOGGLE_VA.bin Flashing Firmware to a HDZero VTX The HDZero goggle can flash firmware to a HDZero video transmitter via its FW port. Here are the steps: To flash a single VTX: 1. Copy HDZERO_TX.bin to root directory of a SD card that is formatted as FAT32 2.

  • Page 22: Flashing Firmware To The Goggle

    Flashing VTX firmware with Goggle is highly not recommended for Goggle safety consideration. HDZero Programming Cable preferred for its convenience and safety. However, a Windows system is needed to run the HDZero Programmer app, Mac is not supported for now.
  • Page 23 Goggle Emergency Firmware Update Process using Phoenix App (for all versions) Download PhoenixCard.zip from the HDZero Download site, and extract it to a location on a Windows machine, for example, C:\PhoenixCard. This is a one-time process. There is no Mac or Linux version for now.
  • Page 24 (3) Have to wait for the above specified time, DO NOT move to next step in a hurry. (4) When the goggle is bricked, it shows HDZero Boot screen and will not get into Main menu.

  • Page 25: Troubleshooting

    Troubleshooting Support should be attempted in the following manner. 1. Read this manual first 2. Follow us on Facebook/Discord if possible a. Facebook: https://www.facebook.com/groups/hdzero b. Discord Server: https://discord.gg/VSkXzkKPHt 3. Email Technical Support: support@divimath.com...

  • Page 26: Warranty

    Warranty The HDZero Goggle can be exchanged for a new unit within 7 days for any manufacturing defects if returned in new condition. The optic module will be warrantied for repair for 6 months, and all other components, for 2 years, if there are no signs of excessive use. Buyer will be responsible for shipping costs.