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Merge pull request #270 from PetruSoroaga/patch-4 

Update fpv.md
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Signor Pellegrino 2023-11-23 00:21:12 +03:00 committed by GitHub
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@ -216,7 +216,7 @@ wfb-cli gs
If the recv value remains zero and the d_err value increases, the camera and ground station keys probably do not match. Make sure that /etc/gs.key is copied to the ground station. If no packages are present - make sure that `channel=xx` in /etc/wfb.conf on the camera and `wifi_channel=xx` in /etc/wifibroadcast.cfg on the ground have the same values. For the 5.8 GHz range of the RTL8812AU adapter, channels 60 and above are recommended. If the recv value remains zero and the d_err value increases, the camera and ground station keys probably do not match. Make sure that /etc/gs.key is copied to the ground station. If no packages are present - make sure that `channel=xx` in /etc/wfb.conf on the camera and `wifi_channel=xx` in /etc/wifibroadcast.cfg on the ground have the same values. For the 5.8 GHz range of the RTL8812AU adapter, channels 60 and above are recommended.
* Configure the flight controller under ArduPilot to output telemetry in mavlink1 format at speed 115200 on e.g. port Serial1. In case of one-way telemetry (downlink only), make sure that the FC outputs the required telemetry stream by default, without connection to the ground station. This is accomplished through setting the SR1_xxx parameters, see [mavlink SR_ parameters]. [mavlink SR_ parameters](https://ardupilot.org/dev/docs/mavlink-requesting-data.html). * Configure the flight controller under ArduPilot to output telemetry in mavlink1 format at speed 115200 on e.g. port Serial1. In case of one-way telemetry (downlink only), make sure that the FC outputs the required telemetry stream by default, without connection to the ground station. This is accomplished through setting the SR1_xxx parameters, see [mavlink SR_ parameters]. [mavlink SR_ parameters](https://ardupilot.org/dev/docs/mavlink-requesting-data.html).
* Connect Serial1 of the PC to the UART of the camera, rx to tx, tx to rx. In case of modern PCs on STM32F4/7 the voltage levels are the same (3.3V), in case of 5V APM a level conversion will be required. The subtlety is the camera U-Boot boot loader stops on boot after receiving any bytes on the UART input. The PC should start outputting telemetry c delayed by a few seconds, through setting the TELEM_DELAY parameter. On the table it is easier to provide a break in the line from the PC to the camera. * Connect Serial1 of the FC to the UART of the camera, rx to tx, tx to rx. In case of modern FCs on STM32F4/7 the voltage levels are the same (3.3V), in case of 5V APM a level conversion will be required. The subtlety is the camera U-Boot boot loader stops on boot after receiving any bytes on the UART input. The PC should start outputting telemetry c delayed by a few seconds, through setting the TELEM_DELAY parameter. On the table it is easier to provide a break in the line from the FC to the camera.
* On the camera in /etc/datalink.conf file set the `telemetry=true` parameter, in /etc/telemetry.conf file set the `one_way=true` parameter for one-way or `one_way=false` for two-line telemetry respectively. The simplest way to edit files on the camera is Shell Link in Midnight Commander: * On the camera in /etc/datalink.conf file set the `telemetry=true` parameter, in /etc/telemetry.conf file set the `one_way=true` parameter for one-way or `one_way=false` for two-line telemetry respectively. The simplest way to edit files on the camera is Shell Link in Midnight Commander:
* *
![mc_shell_link](../images/MC_shell_link.png) ![mc_shell_link](../images/MC_shell_link.png)