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Er9x transmitter now with MavLink

Posted by Earl on March 19, 2012 at 9:30am

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The er9x transmitter now will display MavLink data on the LCD.

Gerard Valade a DIYdrones member wrote the software and myself who was the principal debugger.

Works at 19200 and 38400 baud. Still have a problem with 57600 baud. Some kind of timing issue yet.

Here is a pic of the arduplane 2.30 MavLink display on the er9x.

There is an Xbee inside the er9x to receive the MaveLink data from the APN2.0 purple board.

We will post the er9x firmware soon.

Earl

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Comments

  • Brian Donovan March 19, 2012 at 11:46pm

    Hi Earl

    I flashed the unit and it looks great. Appreciate the post.

    A few questions if you would be so kind.

    1. No problem on the TX and RX

    2. Where is the best place to pull VCC and GND for XBee . Off the pins on the Mega 21/22 or 52/53 (same potential?) or elsewhere?

    3. Assume it is only the 4 pins required from XBee being Vcc, GND, RX, TX

    Thanks

    Brian

  • Earl March 19, 2012 at 9:58pm

    yes.

    Can you tell i have taken my night pills ?

    Earl

  • Ellison Chan March 19, 2012 at 9:52pm

    You should display a QR code, and then we can use our phones to actually interpret the data: :-)

    images?q=tbn:ANd9GcQncGI8FA5lT_dscTPv5JdFiYmQQBIBANqJQN9Zp2hpcqGbQU_8Ew

  • Earl March 19, 2012 at 9:47pm

    you need to realize with a plane or copter there could be tons of data to rx and a fair amount to tx.

    alt,vert rate,lat,lon.speed,compass,heading,sonar data,lazer data,ping data,spit data,p i d tuning,way points,battery, current,consumption,hydrometer,rice cooker,bbq temp,rpm of prop and chicken cooker, number of bombs to drop,leaflet propaganda deployment,lolly-pops and tootsie rolls too.water boodle drop,4th of July missals,marbles,bunker busters, and most important...many little nukes.

    Earl

  • Earl March 19, 2012 at 9:27pm

    we will get it to work at 57kb soon also..

    earl

  • Earl March 19, 2012 at 8:33pm

    The 900mhz Xbee will go 5 km easy.

    Yes, any rf serial link at 38kb will work. Just remember to compile the ardupilot code for 38kb on serial port 3.

    Earl

  • Earl March 19, 2012 at 8:27pm

    Here is link to code

    http://code.google.com/p/gv9x/downloads/list

    The hook up is easy. the tx/rx ttl lines from the xbee connect to pin 2 (rx) and pin3 (tx) of the er9x atmega.

    remember tx to rx and rx to tx on xbee to er9x.

    Earl

  • Ellison Chan March 19, 2012 at 8:21pm

    Joseph, as the Earl mentioned, any telemetry link that is capable of serial communication at the correct baud rate will work.  The APC220 modems I use are in the 400mhz band, and theoretically has a range of about 1km.

  • Rana March 19, 2012 at 7:22pm

    Very nice ! Motor current along with mAh consumed would be very useful, if space is not available, you may remove the less important parameter.

  • Brian Donovan March 19, 2012 at 6:44pm

    Great stuff

    I have looked at this development before but cannot figure out the wiring of the XBee from people who have done this. Can't find it on the forums either.

This reply was deleted.