Hi all,

I've seen a few Android projects around using bluetooth bridges, but I was wondering if anyone had thought about connecting a 3DR radio to an IOIO board (IOIO board contains a single MCU that acts as a USB host and interprets commands from an Android app) for telemetry/control from an Android device?

They seem to both support UART, and my phone fits in my pocket, unlike my laptop!

I'm a Java/Android programmer, so I'm comfortable I can write a Android UI, and the IOIO SDK seems pretty straight forward, but I've never used UART etc before.

I also believe that there is no native java mavlink library, and JNI is the way to go, but I've never used JNI on Android (although the copter-gcs project seems to have done this!).

I've got a IOIO board to play around with already, but not 3DR radios yet.

Does this sound feasible?Could I test this simply by plugging into the APM2 telemetry ports and then just plug in the radios at a later date? 

Hardware

Other projects I've seen are

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Replies

  • Basically, although ive not gone into the 'ins and out's' of this, you should be able to take the RS232 signal out of the IOIO which is being controlled by an Android device and feed this into an RS232 port on a PC. Using a terminal program or similar, you should be able to read the signal on a PC. You will need a level converter between the IOIO and the PC's RS 232 port such as the MAX232 IC

    If you had a pair of 3DR's (or the cheaper clones) you would still need a similar setup at the receive end if you are just experimenting.

    It would be interesting to see how you get on, as i have yet to interface a 3DR and IOIO for my project.

  • Another project

    https://code.google.com/p/airmavgcs/

  • Some more info on IOIO UART 

    https://github.com/ytai/ioio/wiki/UART

    ytai/ioio
    Software, firmware and hardware of the IOIO - I/O for Android - ytai/ioio
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