[hpsdr] Atlas Firs Light

[Eric Ellison]

Chris

 

Another request:

 

As you go along, could you also document the assembly for an assembly manual
to go along with pictures, and BOM? This board will probably always be a
kit, and although it is pretty straight forward, I have never assembled any
board which didn't benefit from some form of helpful documentation. The
designers and developers are almost always skilled enough to solder and
assemble what they design; however, folks who actually buy the board and
assemble it have widely varying capabilities. I think we should have an
"Atlas Assembly Manual" ready to ship with the boards. It also adds to the
professionalism of the project.

 

Thanks for the alpha testing!

 

Eric - AA4SW

 

 

  _____  

From: hpsdr-bounces at hpsdr.org [mailto:hpsdr-bounces at hpsdr.org] On Behalf Of
Christopher T. Day
Sent: Sunday, April 23, 2006 2:08 AM
To: hpsdr at hpsdr.org
Subject: [hpsdr] Atlas Firs Light

 

Bulletin:

 

 

I have posted a picture - only 600x800 this time - of "First Light" observed
with the Atlas board.

 

http://www.hamsdr.com/personaldirectory.aspx?id=196

 

I got anxious to see something, so this is an early stage. The tantalum
capacitors are not installed because of the size issue I mentioned in
earlier e-mails. The ceramic bypass capacitors are all installed as well as
the dropping resistors and LEDs. I will do the DIN connectors next. There is
a jumper in the Power_On# position; no switch on hand. That's all that's
needed for this board.

 

My picoPSU-120 is plugged directly into the ATX power connector. There is
_no_ extra load resistor on the board. If you look carefully, you will
notice that only four of the five LEDs are lit on the Atlas board. (The
picoPSU has a red LED and a grenn LED of its own; green for power applied
and red for power on, apparently.) This, as it turns out, is not wrong - the
picoPSU only supplies -12V, not -5V and that's the LED that is not lit.
Voltages at J20 look fine.

 

Looking good! More pix to follow.

 

 

            Chris - AE6VK

 

P.S. - "First Light" is the term for the inaugural picture from a new
telescope.

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