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Q&A: Q: why not use the radio to export telemetry to the antenna tracker controller? Q: why not also connect the radio to the directive antenna moved to the tracker? Q: why not to use Airport? Q: Is there a tracker to which you could connect the receiver you envisioned? |
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Why not just connect the ELRS receiver on the radio to the device pointing the antenna and allow either mavlink or telemetry of your choice to be streamed over the WiFi link? Most ELRS receivers have WiFi now for OTA updating. And lots of SBCs that have GPIO to control servos (RaspberryPi Zero W) have WiFi as well. |
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Because it is simplier to use an FC. Anyway I've solved in a different way: https://github.com/sdellava/EDGETX-LUA-micro-antenna-tracker Basically instead of using a separate "computer" I've used the the telemetry receiver (the EdgeTx) to excecte the required computation and drive the servos. Anyway, I guess that a modular approach to the ELRS architecture could be usifull, so If one need just the telemetry, why not allow hit to go that way? |
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your solution is very good, but having another tx working on the same freq. could possible affects range, but if elrs is on 900mhz and the tx is 2.4ghz no problem, anyway it would be a nice addition to elrs to had a antenna tracker support, while more simple is the setup is more enjoyble to use and fly |
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The second rx is reviewing only. Telemetry is disabled.
There is no possibility to produce interference.
Il gio 15 feb 2024, 15:46 jorgeneo560 ***@***.***> ha scritto:
… your solution is very good, but having another tx working on the same
freq. could possible affects range, but if elrs is on 900mhz and the tx is
2.4ghz no problem, anyway it would be a nice addition to elrs to had a
antenna tracker support, while more simple is the setup is more enjoyble to
use and fly
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Good morning, everyone.
Airport is a great solution for receiving telemetry on a base station, however it requires a second transmitter and typically a PC on which the data can be viewed or used for various purposes. One possible purpose is to use the GPS position sent from the aircraft and pass it to an antenna tracker. The final system configuration is quite complex, and with this feature request I propose a solution that can reduce it significantly.
Airport transmits the data stream, produced by the FC, which contains the same information that all ELRS RXs can transmit.
Unfortunately, the limited transmitting power of the RXs makes telemetry impractical because with an omnidirectional antenna on the receiver and transmitter and 100 mW of transmitting power, after 400-500 m, the receiver can no longer decode the transmitted data. This amply justifies Airport, however, one could also replace the receiver antenna with a directive one. This idea requires precisely pointing the antenna toward the aircraft. Doing this manually is possible, but if you get distracted for a moment you risk failsaife.
We can overcome this problem by using a antenna tracker that can point a directional antenna toward the aircraft. Antennas for receiving video signals can be installed on the same tracker.
The antenna trackers (such as Ardupilot's) however, use a protocol (Mavlink) that requires a special transmitter (basically requiring a link similar to Airport)
We can overcome this problem by using a antenna tracker that can point a directional antenna toward the aircraft. Antennas for receiving video signals can be installed on the same tracker.
The antenna trackers (such as Ardupilot's) however, use a protocol (Mavlink) that requires a special transmitter (basically requiring a link similar to Airport)
My proposal is to create a version of the ELRS fw for the rx, which can receive telemetry transmitted by another rx, knowing its passphrase. By equipping this rx with a directive antenna we will have in a one-way link that allow to receive the telemetry and can provide the controller antenna tracker sw with the GPS coordinates of the aircraft and allow it to orient itself to get the best telemetry (and video signal).
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