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Mar 08, 2013, 09:11 AM
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bstott2's Avatar
Quote:
Originally Posted by Dennis Frie
Looks good
Mind if I attach your BOM to post #1 as well?

The resistors can pretty much be "any resistor". I recommend 1% for the 3.3K and 10K resistor used for voltage-divider, but except for that the values and ratings are not very critical.
If it is worth it please attach.

Note: All of the resistors listed in the BOM are 1%.
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Mar 08, 2013, 09:18 AM
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bstott2's Avatar
I forgot to tell all ----

In the Mouser Project I listed --- I used the smaller SMD 16MHz & 27MHz crystals which, in the above posts, were Dennis's earlier called out choices. So, there should not be the too big part for too small pad problem noted by several sufferers. :-P
Mar 08, 2013, 09:22 AM
Just another user
Dennis Frie's Avatar
Quote:
Originally Posted by bstott2
If it is worth it please attach.

Note: All of the resistors listed in the BOM are 1%.
Quote:
Originally Posted by bstott2
I forgot to tell all ----

In the Mouser Project I listed --- I used the smaller SMD 16MHz & 27MHz crystals which, in the above posts, were Dennis's earlier called out choices. So, there should not be the too big part for too small pad problem noted by several sufferers. :-P
The 1% resistors was just a general note

Great with the updated crystals. I've added a note on the digikey-list to avoid further problems.

Thanks!

Looking forward to see some builds
Mar 14, 2013, 05:39 AM
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RFnoise's Avatar
Hey all!

Is is possible to connect a pressure sensor like the common BMP085 to the OSD and enable it in the code? Its very cheap and a very nice add-on for a quad-flier instead of an GPS. The calibration can be done every time the OSD is started.

Take care,
Carl
Mar 14, 2013, 06:21 AM
Registered User
Quote:
Originally Posted by RFnoise
Is is possible to connect a pressure sensor like the common BMP085 to the OSD and enable it in the code?
Hi.

why not? I2C port is available. Try to ask jalves, think i implemented it already
Mar 14, 2013, 07:02 AM
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RFnoise's Avatar
Quote:
Originally Posted by muerzi
Hi.

why not? I2C port is available. Try to ask jalves, think i implemented it already
Thanks for the heads up! I will ask him. I was looking through the official code and couldnt find any pressure related data.
Mar 14, 2013, 07:02 AM
Registered User
Dennis already implemented it (a bmp085 vario).
Mar 14, 2013, 07:03 AM
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mike_o's Avatar
Quote:
Originally Posted by RFnoise
Hey all!

Is is possible to connect a pressure sensor like the common BMP085 to the OSD and enable it in the code? Its very cheap and a very nice add-on for a quad-flier instead of an GPS. The calibration can be done every time the OSD is started.

Take care,
Carl
Yes, already implemented. You will get a much better altitude read-out with the BMP085. Especially near ground / your landing zone, which is very nice for night flying approaches. The algorithm isn't very good for high altitude flying, though...
Mar 14, 2013, 08:00 AM
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jalves's Avatar
I am working with Version 5, no addons except current sensor (and gps).
Mar 14, 2013, 03:09 PM
Just another user
Dennis Frie's Avatar
Quote:
Originally Posted by RFnoise
Hey all!

Is is possible to connect a pressure sensor like the common BMP085 to the OSD and enable it in the code? Its very cheap and a very nice add-on for a quad-flier instead of an GPS. The calibration can be done every time the OSD is started.

Take care,
Carl
Quote:
Originally Posted by msev
Dennis already implemented it (a bmp085 vario).
Quote:
Originally Posted by mike_o
Yes, already implemented. You will get a much better altitude read-out with the BMP085. Especially near ground / your landing zone, which is very nice for night flying approaches. The algorithm isn't very good for high altitude flying, though...
Year as mentioned, BMP085 is already implemented (see post #1)

With default settings, it will automatic detect BMP085 at start-up and replace GPS-altitude with pressure-altitude and show lift/sink and the bar.
Mar 14, 2013, 03:10 PM
Just another user
Dennis Frie's Avatar
Quote:
Originally Posted by jalves
I am working with Version 5, no addons except current sensor (and gps).
Have you added anything interesting? Version 5 is quite old, a lot of things have been improved since.

By the way, the new boards with ISP-header is a lot better to work with. Just had to program one without ISP-header yesterday, what a PITA
Mar 15, 2013, 04:29 AM
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RFnoise's Avatar
Quote:
Originally Posted by Dennis Frie
Year as mentioned, BMP085 is already implemented (see post #1)

With default settings, it will automatic detect BMP085 at start-up and replace GPS-altitude with pressure-altitude and show lift/sink and the bar.
Ahh, I can see now that im in the wrong thread The question was meant for your other OSD project: https://www.rcgroups.com/forums/show....php?t=1473207 The arduino open source. Im posting there aswell.

Is it possible to buy a soldered OSD MAX7456 version from any of you guys by the way?

Regards,
Carl
Mar 15, 2013, 11:39 AM
Registered User
Quote:
Originally Posted by RFnoise
Ahh, I can see now that im in the wrong thread The question was meant for your other OSD project: https://www.rcgroups.com/forums/show....php?t=1473207 The arduino open source. Im posting there aswell.

Is it possible to buy a soldered OSD MAX7456 version from any of you guys by the way?

Regards,
Carl
If you don't mind to wait a month or 2 you can buy one from me probably
Mar 15, 2013, 11:46 AM
Registered User
Msev, are you selling your osd? Why?
Mar 15, 2013, 11:50 AM
Registered User
Quote:
Originally Posted by muerzi
Msev, are you selling your osd? Why?
No, I'll make a few, maybe in the first run 2 or 3 boards fully populated..And I'll sell them for an outrageous amount of money (just kiddin', the price will be right )..but of course they'll be more expensive than the bare parts since I have to account in some transportation costs and some profit for my work, and some beer for the author of the project .

Muerzi I'll have one board for myself so that I can load your videotelemetry code later on it :P


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