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Re: [Paparazzi-devel] apogee board 2.0 - feature questions

From: Andreas Philipp
Subject: Re: [Paparazzi-devel] apogee board 2.0 - feature questions
Date: Mon, 12 Oct 2015 13:45:06 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.8.0


good to hear about the further progress of this already excellent piece
of hardware! Just to mention a very small issue: we are always mounting
the apogee upside down in order to have access to the molex connectors.
It is possible to tell the firmware about that in the airframe file.
However we cannot see the LEDs any more. It is really something you can
live with and I don't think it is easy to address this "problem" by
changing the design of the board. However may be something comes to your
mind, making things generally easier with a reversed board. Just a
thought ...

Best regards,

On 10/12/2015 11:17 AM, Jan Čapek wrote:
> Hello,
> we have decided to update apogee board due to discontinuation in
> production of some parts. I would like to know the opinion of the
> interested paparazzi developers on the changes:
> - IMU will be updated with MPU9250. This will eliminate need for an
>   external magnetometer
> - SD card sold is discontinued, and will be replaced by the one
>   currently in production by molex
> - mounting holes - we find the 1.8mm holes pretty difficult for
>   mounting the board. The holes will be changed to 2.5mm
> - servo connectors - we would like to turn the 3 pin connectors 180
>   degrees, so that pin 1 corresponds with servos signal. This will make
>   the board consistent with the standard molex 1.25->futaba/JR harness
>   cables
> (
> - power connector - we find the power connection to the board a bit
>   difficult without a proper connector. The 4mm connectors (the distance
>   between the 2 pads) are rather too big for such a tiny board. We will
>   place a 4 pin 1.25mm molex blade header - pins 1,2 as Vdd+, and pins
>   3,4 as GND. This will still leave the option to solder wires directly
>   to the board.
> Any other objections regarding the board update are very welcome.
> Best regards,
> Jan

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