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Old Jun 13, 2012, 12:55 PM
Audi multa, loquere pauca
Lithuania, Vilnius Region, Vilnius
Joined Apr 2012
122 Posts
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Rex Caeli - Hardware and Firmware resources

Rex Caeli - Hardware and Firmware resources for DOWNLOAD

Rex Caeli is an absolutely free DIY project mainly for educational purposes. It is not a commercial product and will never be available for sale!

EAGLE project, schematic diagram and board layout of Rex Caeli rev1 hardware:
http://www.rcgroups.com/forums/showa...6&d=1339609497

This is what needs to be corrected:
  • Three devices: 3-axis accelerometer, 3-axis gyroscope (the LSM330DL chip) and 4Mbit flash are connected via SPI2 bus of the STM32F103RBT6 uC. This is the major drawback of the design. The better solution is to place the LSM330DL chip on SPI2 bus and 4Mbit flash on SPI1 bus or vice versa.
  • BMP085 pressure sensor should be placed away from the voltage regulator, because regulator rises temperature of the surrounding PCB by 5-7 degrees Celsius.
Source code is here https://github.com/SVentas/OpenPilot/tree/rexcaeli under rexcaeli branch.

To reduce wobbling, accelerometer data is filtered with Chebyshev Type II 4-th order low pass filter taken from AeroQuad firmware.

Now I am working on baseflight (MultiWii for STM32 by timecop) and AeroQuad firmware adaptation.
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Last edited by SVentas; Feb 22, 2013 at 09:45 AM.
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Old Nov 02, 2012, 10:10 AM
Registered User
United States, IL, Plainfield
Joined Nov 2012
1 Posts
Need CAM files to build Rex Caeli flight board

I have Eagle and would like to make the changes stated in the forum to move the regulators.

I have loaded the schematic and board files, but wonder if I can get the CAM files you used to get the board built, so I can make gerbers for a PCB house.

Are they available? Where might I get them?

Thanks,
Pete
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Old Nov 04, 2012, 10:33 AM
Audi multa, loquere pauca
Lithuania, Vilnius Region, Vilnius
Joined Apr 2012
122 Posts
The CAM files depend on the manufacturer You choose.
If You want to use ITeadStudio's prototyping service, then there is the link
http://imall.iteadstudio.com/open-pc...120418001.html
Under DOWNLOAD tab You will find necessary files.
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Old Dec 02, 2012, 03:17 PM
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Interesting
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Old Dec 02, 2012, 03:44 PM
Audi multa, loquere pauca
Lithuania, Vilnius Region, Vilnius
Joined Apr 2012
122 Posts
Quote:
Originally Posted by msev View Post
Interesting
What do You mean?
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Old Dec 03, 2012, 10:53 AM
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Joined Sep 2010
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Its interesting that you taken some code stuff out of other code bases and combined it, and you also made a nice looking board...I'm interested in fixed wing stuff, will you code something for aeroplanes also or just for multicopters?
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Old Dec 04, 2012, 05:22 AM
Audi multa, loquere pauca
Lithuania, Vilnius Region, Vilnius
Joined Apr 2012
122 Posts
Quote:
Originally Posted by msev View Post
...and you also made a nice looking board...
Well, this board is not so nice. It is big (45x45 mm), it has a lot of parts ant it's quite difficult to make it.
Quote:
Originally Posted by msev View Post
I'm interested in fixed wing stuff, will you code something for aeroplanes also or just for multicopters?
I am not coding for planes or multicopters. I am coding for fun .
The OpenPilot CC3D code is equally suitable for multicopters and for fixed wing, so my RexCaeli board can be used for fixed wing too.
I am not sure of baseflight capabilities on fixed wing, but I haven't finished the port of baseflight anyway.
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Old Dec 04, 2012, 10:37 AM
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I mean more advanced capabilities for a plane. like altitude and heading hold and with the addition of a gps also waypoint navigation and return to home functionality.
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Old Dec 05, 2012, 05:58 AM
Audi multa, loquere pauca
Lithuania, Vilnius Region, Vilnius
Joined Apr 2012
122 Posts
Quote:
Originally Posted by msev View Post
like altitude and heading hold and with the addition of a gps also waypoint navigation and return to home functionality.
Oh... I see.
Unfortunately the answer is no or not yet (I don't have a GPS). Maybe some day...
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