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Re: [Paparazzi-devel] Multi tiered telemetry solution

From: Reto Büttner
Subject: Re: [Paparazzi-devel] Multi tiered telemetry solution
Date: Tue, 6 Mar 2012 20:41:09 +0100

Has anyone integrated DroneCell to Paparazzi:

According to the Spec it should be possible quite easily:

- 3.3V or 5V UART Interface (voltage-shifting is done on board)
- High serial data rate (up to 115200 baud)
- Software configurable baud rate
- Works with any SIM card
- Quad band cellular connectivity

Must be great for long range missions. Any experience reports are appreciated.

Cheers, Reto

Am 6. März 2012 17:32 schrieb Tilman Baumann <address@hidden>:
> I have been wondering for a while if it would be feasible to have some kind
> of tiered structure for different telemetry links.
> Most links have their distinct advantages but also disadvantages.
> I was thinking to have WLAN for short range via on-board computer.
> (Telemetry via UDP and video/image capture)
> RF for mid range.
> And 3g/UMTS for fall-back. (Has anyone tried this before on paparazzi?
> ArduPilot seems to have that as a viable option.)
> Those links have obviously very different round trip times, bandwidth and
> reliability. So the amount of data sent back would have to be dynamically
> adapted.
> I don't think the code has such a concept yet, but does anyone think it can
> be easily done?
> I'm actually contemplating some kind of bridge right now that takes a full
> speed telemetry downlink via serial that has some knowledge about the
> message types in order to chop off messages that will not fit the selected
> downlink.
> I'm just thinking loud here. But if the ideas are viable I would perhaps
> like to invest some energy to test those...
> Cheers
>  Tilman
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