LibrePilot Forum
Users => Vehicles - MultiRotors => Topic started by: Simon yoon on December 06, 2016, 09:41:16 pm
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Good afternoon!
Im trying to follow this instruction:
http://opwiki.readthedocs.io/en/latest/user_manual/cc3d/gps.html
I connected the gps(UBLOXNEO-M8N) to my cc3d(revo) with battery, and it seems fine as I can see the green light on gps.
However, when i turn the program on (U center 8.23),connect, and turn on the configuration panel, it starts not responding.
I thought my pc has the problem, so i used the different PC, but same thing happens.
did i have to follow different instruction? or is there anything I miss?
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Like the link page says there is no need to manually configure the GPS using Ucenter.
(https://forum.librepilot.org/index.php?action=dlattach;topic=2713.0;attach=4740)
You should use LibrePilot wiki and find the information you need:
https://librepilot.atlassian.net/wiki/display/LPDOC/GPS+setup
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Thanks, it works! :)
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I have followed the - https://librepilot.atlassian.net/wiki/display/LPDOC/Configure+a+GPS+for+CC3D#app-switcher - "path" to connect a M8N to uBlox - without any luck ... ditto a detailed youTube vid by one of the Free X group.... nothing I do gets any show of sats or even being connected.
I have looked at this and other forum for any images of the wiring of the pins on the M8N - see pic attached... can anybody fill in the blanks - which colour wire does what.
TIA
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I always have to look up the GPS connector pinout for the FC that GPS is designed for. I would guess that is for a PixHawk.
I would make a guess that yellow/green are the two I2C mag wires, that black/red are -/+ and the remaining two white/blue are txd/rxd or rxd/txd.
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Sorry--I edited the post before posting and removed stuff about the Revolution FC... which is what I am setting up. The GPS is out of its Puck !
I have the yellow and green in the flexi port on the revo - while setiing up for uBlox- I used the TX and RX on these two wires... swapped them - but nothing hooks it up to uBlox
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I always have to look up the GPS connector pinout for the FC that GPS is designed for. I would guess that is for a PixHawk.
I would make a guess that yellow/green are the two I2C mag wires, that black/red are -/+ and the remaining two white/blue are txd/rxd or rxd/txd.
The small connector is inserted into the M8N - I took Red and Black as 5V input and Gnd.
The colours seen on the FTDI are the other end of the JST connector that joins these two cables - Orange and Yellow from the FTDI become White and Yellow from the M8N end of the loop. When one way failed... I unplugged the wires and changed these two wires in the FTDI RX - TX
Neither way fired up anything in uBlox Center.
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Set up GPS first. Skip mag. Green and yellow are probably mag. So there is only 2 ways to set it up. White=Txd Blue=RxD or vice versa.
Revo is best test device. It does auto baud and configuring. Red X means no connection. Anything else (including red block) is good connection. I never got autobaud on Ucenter to work (Linux and Wine).
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So no need to mess about with uBlox - I thought it was needed top set the location which seems at odds when I do that in LP /Revo.
I suppose the other aspect was playing with the visuals.
As it is a 450 frame is stable, although as yet I have not connected the M8N to it for flying... just static testing.
Thanks for your help Cliff...appreciated
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Revo does auto-configure Ublox GPS, CC3D does not. So if you use Revo then you don't have to bother about anything, as firmware will change whatever you set to what it needs.
GPS alone is just simple serial protocol VCC,GND,TX,RX lines. Just don't mess up VCC, GND lines :)
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Revo does auto-configure Ublox GPS, CC3D does not. So if you use Revo then you don't have to bother about anything, as firmware will change whatever you set to what it needs.
GPS alone is just simple serial protocol VCC,GND,TX,RX lines. Just don't mess up VCC, GND lines :)
Thanks for the info....the revo or revo's ( I have two ) are Ok and working well.... apparently.