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3D RoboticsPermalink Reply by Chris Anderson on November 30, 2007 at 8:42pm

Excellent! That's just why I shared the code--"with enough eyes, all bugs are shallow".

If you send me the improved code, I'll post it here as a replacement, and add you to the credits.

-c

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Permalink Reply by wayne garris on November 30, 2007 at 8:53pm

sorry its a bit messy, and i have not included altidude to reduce complication. the waypoints i used were for a "driving " test i did around my 'hood . it seems to work but you never know till you fly

Attachments:

• auto v1.bsp, 3 KB
• initialize.bsp, 5 KB
• navigation.bsp, 7 KB

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3D RoboticsPermalink Reply by Chris Anderson on November 30, 2007 at 10:29pm

Replaced. You're credted in the navigation file, where that bug is fixed. Thanks again!

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Permalink Reply by wayne garris on December 1, 2007 at 11:39am

just to clarify , the code i sent you uses the "Parallax Servo Controller (Serial) " not the FT639

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3D RoboticsPermalink Reply by Chris Anderson on December 1, 2007 at 11:58am

Ah. That's good to know. I'll clarify that in the comments on the code.

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3D RoboticsPermalink Reply by Chris Anderson on December 1, 2007 at 1:12pm

Correction: Rather than make people figure out what to comment or uncomment depending on their servo driver, I've actually posted two different sets of code in that overview post.

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Permalink Reply by James Hall on December 26, 2007 at 4:59pm

Question. I am working on some BS2 code to pass my futaba receiver signals through the BS2 onto the Servo controller. However, even though I got some results, my servos tend to chatter back and forth quite a bit, although the pulse width values are holding constant. Is this due to the nature of the BS2 as I have ordered a BS2p to replace this one.

Jim

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Permalink Reply by James Hall on December 26, 2007 at 5:00pm

Do you have a snapshot of your hardware your are using for these attachments?

Jim

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3D RoboticsPermalink Reply by Chris Anderson on December 27, 2007 at 8:44am

James,

I'm not at home right now, but will get you a shot when I'm back, tonight or tomorrow. Which servo interface are you using: the FT639 or the Parallax servo controller?

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Permalink Reply by James Hall on December 27, 2007 at 9:02am

Chris,

I am using the Parallax servo controller. I think I eliminate the servo chatter for now, but when I move the transmitter sticks the serout pulse to the servo's operates them in jerky motion, not smooth a when seen with a servo directly connected to the receiver. Could it be something to do with the processing speed of the bs2 as opposed to the bs2p?

Jim

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Permalink Reply by wayne garris on December 27, 2007 at 10:00pm

the best way to smooth it out is to use a higher baud rate . the parallax servo driver can be commanded to a baud of 38k4 . dont forget to throw the servo controller a new baud rate command once every program cycle or you it could reset to default baud mode and communications will fail. this will considerably smooth things out but you have to realize that the serial communication is the slowest thing happening .ie... 2400 baud or 2.4 KHz in much much slower then the 20 MHz of you procceser. also realize that the ratchety feel of the servo wont effect flight enough to worry about . i have flown the same setup as you have with no problems

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Permalink Reply by James Hall on December 27, 2007 at 3:53pm

Here is a picture the project I am working on. The IC chip on the BOE is for temperature measurement.

Attachments:

• P1010086.JPG, 163 KB

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