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First Time Setup
When a project reaches a certain stage, the amount of options to choose from can get pretty overwhelming. This section of the documentation is intended to help guide newcomers to the project towards their first functional OpenHD implementation.
If you have a pre-existing hardware requirement that is not met in this guide, it is still a good idea to follow the guide and make sure you have this, the simplest setup, working before venturing into the more complex setups. Every setup, no matter how complex uses the elements in this guide at it's base.
Assuming you are starting with nothing, we recommend you get the following Hardware:
- A regular Laptop with disabled SecureBoot
- A fast USB stick, to write the OpenHD USB Image on
Pi Zero 1 is not supported you need the version 2 !
- A Raspberry Pi Zero 2:
- High Quality BEC's, one for the Wifi-Adapter and one for the Raspberry. (See Wiring -> Power)
- A (supported Camera) and the required cable (keep in mind, the Pi Zero uses a 22 Pin type B csi cable)
- A soldering iron and required disposables.
- Various lengths of connection wires.
- A Raspberry CM4 with EMMC with:
- We recommend fitting a cooler to the CM4, because it really can get hot.
- A (supported Camera) and the required cable (keep in mind, the Ochin uses a 22 Pin type B csi cable)
- A soldering iron and required disposables for creating the connections to the Wifi-Card
Now that you have your prerequisite Hardware, we can get down to business.
When using X86 the genaral rule of thumb is "the more potent"/newer the device is, the lower the latency should be. Keep in mind, that you have enough battery or an external charging device.
Since we use very powerfull WiFi-Cards and most SBC's have limited USB-Output-Power, we need a dedicated BEC for that Card's. In Addition to that it's common practice to not connect the Wifi-Card directly to the SBC. On the Air-SBC Vibrations and movement in general will result in connection problems, that's why we recommend to remove the USB-Connector or at least solder to the USB-Connector. If you need help with that look in our forums, there are some extensive guides how to do it nicely. Also writing in the Telegram or Discord Chat can help you.
First you should download our latest (Image Writer). Install it and configure it to boot as Ground, write it to your USB-Stick.
Please make sure SecureBoot is disabled and set up your BIOS(UEFI) to boot from USB. Everything else is beeing taken care of. If QOpenHD doesn't start automatically, please execute OpenHD and QOpenHD which are linked to your Desktop.
(The boot can take several minutes, depending on your usb-sticks speed)
If you're not using the Ochin board,you can jump to the next step. If you're using the Ochin, you first need to install your CM4 into the Ochin board and flash it. The Ochin board requires external power even when the usb-c is connected. To enter the "flash-mode" push the Button while connecting power. Now you can continue with the normal setup shown in this Video. And when it comes to flashing jump to the next Step
Keep in mind, flashing is very slow, because some limitations of the RPi-Foundation. Do not disconnect while flashing, it can brick your device.
Use the ImageWriter, configure your SBC with the settings button and flash your device.
Plug in the Wifi-Stick, connect the camera (please use copper tape to protect against interference) Check wiring and plug in the Power. The first boot will take several Minutes, because initial configs and setups are executed. The SBC will reboot multiple times. OpenHD will automatically start to transmit Video, if everything is correct. If you haven't configured your camera correctly you'll see a test-picture, in this case look into the AIR Menu in QOpenHD (the OpenHD Logo opens the Menu) and select the correct camera overlay in the V_OS_CAM_CONFIG menu. After this your SBC will reboot and start transmitting video.
If you have any issues now, please don't hesitate and write in our Chats, so we can help you get everything working correctly.
Last modified 29d ago