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Old Aug 11, 2013, 12:57 PM
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Originally Posted by Dennis Frie View Post
My dropbox is not full

By the way, the smaller OSD PCB with integrated power-supply, GPS and pressure-sensor arrived at the post-office yesterday
It sounds promising. You have to tell if you need someone to carry out a field test.

Michael
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Old Aug 11, 2013, 01:05 PM
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Originally Posted by absolute-zero View Post
It sounds promising. You have to tell if you need someone to carry out a field test.

Michael
If you use 5-volt FPV equipment (Video-tx and camera) I wouldn't mind to get it tested roughly sooner or later

It should be able to deliver a very clean 5-volt supply. It could be interesting to add a 12-volt supply too, but I don't really use 12-volt myself.
Old Aug 12, 2013, 05:27 AM
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Originally Posted by Dennis Frie View Post
If you use 5-volt FPV equipment (Video-tx and camera) I wouldn't mind to get it tested roughly sooner or later

It should be able to deliver a very clean 5-volt supply. It could be interesting to add a 12-volt supply too, but I don't really use 12-volt myself.
I can create most used setups with following equipment in stock.

Camera: 3x 5V, 5x 7-12V, 2x 12V
AV Transmitter: 3x 3.3V, 2x 5V, 7x 12V

All my FPV systems share power source with the propulsion system, so good filtration is a must.

A 3.3V could be interesting too, for the cheap 5.8Ghz systems.

Regards
Michael
Old Aug 12, 2013, 05:36 AM
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Originally Posted by Dennis Frie View Post
If you use 5-volt FPV equipment (Video-tx and camera) I wouldn't mind to get it tested roughly sooner or later

It should be able to deliver a very clean 5-volt supply. It could be interesting to add a 12-volt supply too, but I don't really use 12-volt myself.
How well is the power supply engineered regarding to electromagnetic radiation?
Old Aug 12, 2013, 03:06 PM
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Originally Posted by absolute-zero View Post
How well is the power supply engineered regarding to electromagnetic radiation?
Hopefully pretty well ;-)
With a high switching frequency and good amount of capacitance, the ripple on both input and output, should be kept at a minimum.

The loop on the converter is quite small and should not emit much RF-noise.

I considered a RF-shield to eliminate/attenuate the remaining noise, but with the results from the test-board, it didn't seem to be necessary at all. Even at very close distance, I wasn't able to measure much, if any, noise.

https://www.rcgroups.com/forums/show...&postcount=140
https://www.rcgroups.com/forums/show...&postcount=145

- but I'm well aware of the noise-requirements and it have certainly been considered.
Last edited by Dennis Frie; Aug 12, 2013 at 03:15 PM.
Old Aug 12, 2013, 03:23 PM
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What about a SAW filter for the GPS?
Specially if the GPS antenna is small things like the FrSky RX's with telemetry will kill the GPS signal.
Had to bought a GPS with bigger antenna to my copters as I could barely get a 3d FIX when using with FrSky gear.
Old Aug 12, 2013, 03:30 PM
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What about a SAW filter for the GPS?
Specially if the GPS antenna is small things like the FrSky RX's with telemetry will kill the GPS signal.
Had to bought a GPS with bigger antenna to my copters as I could barely get a 3d FIX when using with FrSky gear.
As I'm using an integrated GPS-unit, adding a SAW-filter is not really possible. I really want to keep it as small and light as possible - if I need large GPS-antenna etc. I will be using a seperate GPS-unit.
Old Aug 13, 2013, 04:01 AM
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Originally Posted by Dennis Frie View Post
Hopefully pretty well ;-)
With a high switching frequency and good amount of capacitance, the ripple on both input and output, should be kept at a minimum.

The loop on the converter is quite small and should not emit much RF-noise.

I considered a RF-shield to eliminate/attenuate the remaining noise, but with the results from the test-board, it didn't seem to be necessary at all. Even at very close distance, I wasn't able to measure much, if any, noise.

https://www.rcgroups.com/forums/show...&postcount=140
https://www.rcgroups.com/forums/show...&postcount=145

- but I'm well aware of the noise-requirements and it have certainly been considered.
Superb..
Old Aug 13, 2013, 04:41 PM
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Old Aug 13, 2013, 10:06 PM
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Step away for a few months and you come up with that beautiful little thing. Nice work Dennis!

Middle of the video is some footage with v019
Performed flawlessly! Thanks again Dennis.

MonkeyFest 2013 (4 min 36 sec)
Old Aug 14, 2013, 04:20 AM
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Originally Posted by Dennis Frie View Post
wow - looking good. Nice work, Dennis!

I have a new test platform standing by

Just mounted the ezUHF Tx/Rx

BTW, I also enjoyed the previous version very much. This is my latest flight:
FPV Falcon Flying Wing, Seaside (4 min 26 sec)
Old Aug 14, 2013, 03:37 PM
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Step away for a few months and you come up with that beautiful little thing. Nice work Dennis!

Middle of the video is some footage with v019
Performed flawlessly! Thanks again Dennis.

http://youtu.be/lvIu7T2ezjU
I've been quite busy with a lot of other stuff lately, but I'm still around whenever I get time

Looks good from the video, always great to see it in action.
Old Aug 14, 2013, 03:39 PM
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Originally Posted by mike_o View Post
wow - looking good. Nice work, Dennis!

I have a new test platform standing by

Just mounted the ezUHF Tx/Rx

BTW, I also enjoyed the previous version very much. This is my latest flight:
http://youtu.be/77uOda9ZHy4
Looks very nice
You should really get the EzUHF and OSD connected, to get RSSI and package information. It's really nice when flying in noisy environments and/or pushing the range.
Old Aug 15, 2013, 05:15 AM
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David(bg2vcj)
thanks
How to get it to work? Please help

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It's working fine here... can you try again?
I'll try and put it in dropbox but my account there is full.
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Old Aug 15, 2013, 05:50 AM
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David(bg2vcj)
Thanks
I am interested in the OSD, want to test it. I only have minimOSD. Can you tell me, how to upload the firmware and how to use it?


Quote:
Originally Posted by Dennis Frie View Post
My dropbox is not full

Please note that this is just a direct copy of the file uploaded by IceWind, I haven't even unpacked the file
https://dl.dropboxusercontent.com/u/...9_MinimOSD.zip

By the way, the smaller OSD PCB with integrated power-supply, GPS and pressure-sensor arrived at the post-office yesterday
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