Re: Small low-cost embedded board for model airplane

Paul Carpenter wrote:
Considered the response time of the sensors, along with all the other issues
a 10Hz to 100Hz per channel sample BURST at 10 bits then averaged will be
so close to same instant as to make no difference. I doubt he will see large
changes on most of his signals anyway, without venturing in most countries
into CONTROLLED AIRSPACE.. (usually above 1500 feet).

Most of his signals will need front end amps to amplify the region he is
interested in, as well as deal with all the other issues.

Basically his initial requirements, have many issues not least to get all
that in, with its batteries (even for very short flight time) will be
a large weight, so without knowing the payload[1] capacity of the airplane
and then flight time it is difficult to achieve any sensible answers.
His other major issue is the position of three aerials (Radio control, data
and GPS) to not interfere with each other and best position for normal use.
E.G. GPS on top, others below and spaced away from each other, GPS and
anything they could foul.


[1] Be interesting to see about how this is mounted to not affect the
stability and performance of the airplane.

You make a lot of assumptions. I don't know what he needs since we
don't have the full requirements. But I can be fairly certain that you
don't need an antenna to communicate with an SD card. He never said he
was transmitting data, he said it would go onto an SD flash card. GPS
does not require an external antenna. Have you ever seen many GPS
receivers that required an external antenna? The one we are building
has an internal antenna.

I am willing to give him the benefit of the doubt and not try to second
guess what he needs and does not need. I think he asked for advice on
available boards which I have not seen many repilies to.

.

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