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Old Feb 25, 2013, 10:16 AM
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Quote:
Originally Posted by Deckie View Post
That's an excellent Idea!

However, out of curiosity I'm googling various solid state Gyro's and price results are not encouraging:

http://www.hobbyking.com/hobbyking/s...Y520_Gyro.html

$129.99 for the one. This is significantly more expensive than a combination GPS module and accelerometer. I'll keep looking.
That's a really very expensive unit, I found some for less then $30,-

Greetings Josse
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Old Feb 25, 2013, 01:19 PM
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Originally Posted by Dutchraptor View Post
I found that that when using the NRF, the i2c timing went south. Luckily the Mega has 3 extra RX/TX ports extra. I don't use the RX/TX (0) because it gives problems with uploaden when attached to an extra arduino. Danny
Just an FYI in case you didn't know, but you can actually add additional serial ports to a regular arduino using the SoftwareSerial libary and 2 extra I/O pins for each additional serial port. Although there are some limitations... if using more than 1 serial port, only 1 can receive data at a time. I think in your case you may be better off with the Mega. Anyway, the info is here: http://arduino.cc/en/Reference/SoftwareSerial

I presently use the SoftwareSerial libary for communicating to the MP3 player over 9600 baud. I use the Arduino UNO's built-in serial port for communication to the LCD screen.
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Old Feb 25, 2013, 03:02 PM
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Quote:
Originally Posted by tweety777 View Post
That's a really very expensive unit, I found some for less then $30,-

Greetings Josse
Got links?

I could only find 3 axis accelerometers at that price range, and they are not gyroscopes
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Old Feb 26, 2013, 02:30 AM
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It's already in my build log, needed to reinstall my internet browser and I still need to manually replace my bookmark list, right now I only have the link in file.

Greetings Josse
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Old Feb 26, 2013, 02:42 AM
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For the cheap accelorometer/gyro option, you can always check the Multirotor section. I have a MultiWii board and a KK2.0. Hobbyking has quit a lot to choose from in all kinds of price ranges. For example:
http://hobbyking.com/hobbyking/store...DSM2_Port.html

or:
http://hobbyking.com/hobbyking/store...rol_Board.html

Both for less then 30 dollars. The ports can be read/written to by Arduino or other microcontrollers.

Danny
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Old Apr 02, 2015, 08:35 AM
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Quote:
Originally Posted by Deckie View Post
I could only find 3 axis accelerometers at that price range, and they are not gyroscopes
I just order an MPU 6050 breakout board for $6. The MPU 6050 is the gyro/accelerometer chip used on the KK 2 flight controllers. I only wanted the gyros, but figured the accelerometers wouldn't hurt, and might be useful later, and having them on one chip avoids some issues.

There's an arduino library for it, and the playground has some generic info if you're not using arduino.

If you really just want gyroscopes, or something that wasn't reverse engineered, adafruit and pololu both sell L3GD20H breakouts for $12. They are so similar I'd expect you could replace one with the other and only have to account for the shape.

If those aren't your cup of tea, try searching for "gyroscope breakout" on ebay. There's nothing very cheap in the US, but you can save a few bucks on the above, as well as find some based on other chips. You can even find some MPU 9150, which is an MPU 6050 with a compass in it.

FWIW, my long-term goal here is something like the Spektrum SAFE stuff, except for sail boats. The first project is a roll sensor, hopefully with the ability to give you alerts. Imagine your Tx (not mine, since I don't have audio alerts) telling you "You are rolling to far to port".
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