MiniAPM v3.1

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- - - Artem > Jani Hirvinen June 25, 2014 at 8:59pm
      
      Thx for the indepth reply, will be good if you or 3dr make this type of a board or a px4 lite kind in the same price range for just fpv use where waypoints are not used only good reliable RTL. But in the same price range about 50usd :)
      - F. C. Bearsch > Artem July 19, 2014 at 5:38am
        
        I hoped this was like the VR brain micro looks like no dice...
Ted Reakes June 25, 2014 at 4:05am

I had a play with these (with the LEA6H GPS/compass) today and found the following:

- there is a internal compass, cut jumper 1 and set parameter to use external.

- the stock cables for the LEA6H board wouldn't work. I had to make a cable out of the two supplied. The 6pin connector on the GPS board connects 5V, GND, TX and RX. The 4pin connector on the GPS connects SDA, SCL, 5V and GND. I had to split the 5V and GND from the APM to both connectors.

I can probably upload a pic of the cable tomorrow if need.

Quality is an issue though, bought three and one GPS wont power up, one APM wont connect to mission planner.
- Bjørn-Tore Hansen > Ted Reakes July 18, 2014 at 9:25am
  
  can you tell me how you hooked this up. i could not get the i2c port working.
  - Terry Brooks > Bjørn-Tore Hansen July 18, 2014 at 10:10am
    
    Do these help:
    
    [URL=http://s158.photobucket.com/user/phucking/media/Mini%20APM/DSC05388_zpse279b7b9.jpg.html][IMG]http://i158.photobucket.com/albums/t96/phucking/Mini%20APM/DSC05388...[/IMG][/URL]
    
    [URL=http://s158.photobucket.com/user/phucking/media/Mini%20APM/DSC05385_zps5aef1581.jpg.html][IMG]http://i158.photobucket.com/albums/t96/phucking/Mini%20APM/DSC05385...[/IMG][/URL]
    
    [URL=http://s158.photobucket.com/user/phucking/media/Mini%20APM/DSC05391_zpseaac670a.jpg.html][IMG]http://i158.photobucket.com/albums/t96/phucking/Mini%20APM/DSC05391...[/IMG][/URL]
    - Terry Brooks > Terry Brooks July 18, 2014 at 10:20am
      
      Sorry, Photobucket embedding doesn't seem to work here
      
      1600_DSC05391.jpg
      
      1600_DSC05385.jpg
      
      1600_DSC05388.jpg
      - Shane Hopcroft > Terry Brooks August 18, 2014 at 6:02am
        
        Thanks for taking the time to sharing your work Terry. I now have a bit better understanding of what is required (for the compass/GPS bit anyway).
        
        100KM
        
        Ben Dellar > Shane Hopcroft September 16, 2014 at 7:20pm
        
        Thanks Terry but a word of warning. I connected mine like this but this causes +5V to be supplied to the compass which will cause all sorts of incorrect readings (it is a +3.3V device)
        
        When I modified it to look like Andrew's midway down the page below it all starts working again.
        
        http://diydrones.com/forum/topics/miniapm-v3-1?id=705844%3ATopic%3A...
        
        Cheers
- Artem > Ted Reakes June 25, 2014 at 8:45am
  
  I think 5v and ground on the i2c line are redundant with the 5v and gnd on the uart line of the gps lead. So you can just skip the devision part, I believe 3dr put the 4 leads there so that the mag can be used all by itself without the GPS and vice versa.
  - LTMNO > Artem September 16, 2014 at 8:09pm
    
    Hello Artem, thanks for the post, I too have a 3DR Mag/GPS and i just soldered the wires directly to the pads under the plastic as they are clearly labelled.
    
    One question though, if doing so does the Mag get its 3V via the 5V lead from APM? or do we have to mod the connection on the Original 3DR GPS/MAg.
    
    Thanks for your time.

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MiniAPM v3.1

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