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3D RoboticsPermalink Reply by Chris Anderson on January 30, 2010 at 10:07am

Serial

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DeveloperPermalink Reply by Sandro Benigno on January 30, 2010 at 10:25am

OK, Chris. Thanks for reply. Some questions about it:

Do I need to use only three of the FTDI pins(GRND, OUT, IN)?
The 3v3 output from ArduIMU+ will work. But... what will gonna happen with the ttl output from Arduino? It will send data at 5v... OK? Does it needs some additional circuit to down that voltage?

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3D RoboticsPermalink Reply by Chris Anderson on January 30, 2010 at 10:38am

No, TTL serial is TTL serial--voltages don't matter. Those three pins are sufficient.

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DeveloperPermalink Reply by Sandro Benigno on January 30, 2010 at 1:12pm

Thank you, Chris!
I will do that, right now.

I read something about TTL and LTTL and I was afraid to make the connection.
Good to know that will not go mess up. ;)

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DeveloperPermalink Reply by Sandro Benigno on February 7, 2010 at 7:08pm

Ok. My Seeeduino and ArduIMU+ are interconnected by UART pins. So what is the best way for controlling the flux of serial data between the boards. I need to get the more recent angle's data, by getting serial infos from Arduimu+. But it needs to be done fasten, because the info will be used to calculate correction for quad-copter stabilization. It needs to be synchronized?

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DeveloperPermalink Reply by Mark Colwell on February 7, 2010 at 7:56pm

You can start from Doug's Ardu-IMU-Pilot page but you will need to add sync and speedups...
Also see Christopher's post

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DeveloperPermalink Reply by Sandro Benigno on February 12, 2010 at 8:02pm

Hey, Mark! I've been out for a while... But I'm back.
I worked too much at last days. Now I deserve to play a little. :D

Your indication was awesome!
I know that I gonna have some trouble on the GPS part, because of NMEA's length.
But... for now I don't have a GPS. So, I will concentrate my efforts to coding the sync between the two boards and I will test the correction response speed. :)
I will start to coding now. Thank you for show me the direction!

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