[proctoidpaul]

Can anyone recommend a specific GPS unit with external compass that can plug and play without modification for successful use with my Revolution board?

I've seen many units advertised that don't seem to have all the right features to work with Revo.

Thanks in advance for any tips.

Paul

[jtrout19]

Well that would be the original op gps unit. From what i know are not made anymore. The naza gps is fairly plug and play. You have to change connector out but thats it.

[DocHardinger]

For me the ublox NEO M8N with mag do the job. But you need main port or Flexi-IO port for gps and flexi port for MAG. But then i got a really good position hold with mostly 17 satelites fix. And you can choose different dynamic models, useful for smoother flight in gps modes...

[proctoidpaul]

Thanks Guys!  Please pardon my ignorance here, but other than the connector issue, do I need to worry about the fact that they are advertised for Pixhawk, Naza, etc?  For example, this one says for Pixhawk:

https://www.amazon.com/Hobbypower-NEO-M8N-Compass-Folding-Controller/dp/B00WME95LM

I'm using a full spectrum receiver, so that port is taken.  I would like to run the mini OSD if I can ever get stable enough voltage figured out, so that would only leave me one port....  I do recall reading somewhere that the receiver port can be configured to PPM + telemetry?  Would that be necessary to get all my desired features working?

The other product I found was:
https://hobbyking.com/en_us/ublox-neo-7m-gps-with-compass-and-pedestal-mount.html

.. But this is a 7M not an M8N...

If you have specific links to recommended products, that would be greatly appreciated!

Paul

[TheOtherCliff]

For GPS with mag we specifically support PixHawk (two ports), Naza (one port), OPv9 (one port).  APM (two ports) also works, but you need to set up a voltage regulator to power the mag IIRC.

IIRC 16.09 has support for re-tasking the PWM RC receiver inputs to use it with some other serial devices.  You may be able to use that for a port.

[proctoidpaul]

For GPS with mag we specifically support PixHawk (two ports), Naza (one port), OPv9 (one port).  APM (two ports) also works, but you need to set up a voltage regulator to power the mag IIRC.

IIRC 16.09 has support for re-tasking the PWM RC receiver inputs to use it with some other serial devices.  You may be able to use that for a port.

Thanks for the clarification!


Sent from my iPad using Tapatalk

[DocHardinger]

I bought this one

http://m.ebay.de/itm/Ublox-NEO-M8N-GPS-Built-in-Compass-Holder-for-APM-ArduPilot-Flight-Controller-/351731681219?txnId=848775120022

That works nice but is a little pricey

[proctoidpaul]

Thanks for the link!

[tony092]

Sorry for my question because I saw many post about GPS and I'm little bit lost. I bought a gps ublox-8m with compass but at the end it was without cable for the compass. so for this type of GPS I understand that I have to solder cable for compass that mean I will have one cable for gps using main port and one cable for compass using flex (I2C). As I would like to implement also FPV/OSD one of this port will be used for telemetry. So for GPS with compass it will remain one port of my Revo so this type of GPS with compass with two cables is not the right one. I understand that to use only one port of my Revo I have to buy NAZA GPS with compass which have one cable for both GPS + compass correct?

[Mateusz]

Sorry for my question because I saw many post about GPS and I'm little bit lost. I bought a gps ublox-8m with compass but at the end it was without cable for the compass. so for this type of GPS I understand that I have to solder cable for compass that mean I will have one cable for gps using main port and one cable for compass using flex (I2C). As I would like to implement also FPV/OSD one of this port will be used for telemetry. So for GPS with compass it will remain one port of my Revo so this type of GPS with compass with two cables is not the right one. I understand that to use only one port of my Revo I have to buy NAZA GPS with compass which have one cable for both GPS + compass correct?

There are various options for what you want to achieve

• DJI GPS that uses one port
• Sparky2 controller that has dedicated I2C port
• Probably what you want, but I havent tried this is LibrePIlot 16.09 release comes with "Revo FlexiIO port usage e.g. PPM+GPS." as it says on release notes. So I guess that means you can free up main-port and use FlexiIO (receiver port for GPS). I belive table here shows FlexiIO port, and TX(transmitter), RX(receiver) lines can be used for GPS serial (as it is just normal serial protocol) https://librepilot.atlassian.net/wiki/display/LPDOC/Revolution+Configuration as long as this is Revolution flight controller following standard design (not some wired Revo Mini which has different pin order).

P.S Revo does not exist. It's either CC3D (Copter Control 3D) or Revolution. When chinese call it Revo they probably mean Revo, but they chain up names for easy hits with google. What they call RevoMini is another derivative that has some wired pin-out and table from the link does not apply.

[TheOtherCliff]

You can also buy a converter that converts the PixHawk into a DJI-Naza.  That is how they make a clone DJI-Naza now days.  I would buy the authentic DJI-Naza GPS ($39 shipped).

[tony092]

Thanks Mateusz & TheOtherCliff for your support. Yes I think I will buy a NAZA GPS

[startrek66]

For GPS with mag we specifically support PixHawk (two ports), Naza (one port), OPv9 (one port).  APM (two ports) also works, but you need to set up a voltage regulator to power the mag IIRC.

IIRC 16.09 has support for re-tasking the PWM RC receiver inputs to use it with some other serial devices.  You may be able to use that for a port.

I have bought this product, mark on ublox component Neo-7M-0-000, but I have not yet connected because I have to solder the jst connectors, one for gps and one for mag, total 6 wires. I want to know how recognize if will need to use a voltage regulator on mag and where to find it.
http://www.ebay.co.uk/itm/331869111579?clk_rvr_id=1148027300958&rmvSB=true&ul_ref=http%253A%252F%252Frover.ebay.com%252Frover%252F1%252F710-53481-19255-0%252F1%253Ficep_ff3%253D2%2526pub%253D5574735181%2526toolid%253D10001%2526campid%253D5336086427%2526icep_item%253D331869111579%2526ipn%253Dpsmain%2526icep_vectorid%253D229508%2526kwid%253D902099%2526mtid%253D824%2526kw%253Dlg%2526srcrot%253D710-53481-19255-0%2526rvr_id%253D1148027300958&ul_noapp=true

[TheOtherCliff]

It's PixHawk.  The mag should get power from the GPS power leads.  The mag power should not need to be connected like on APM so you will have 4 wires (-,+,TxD,RxD) going to the GPS serial connection and just two wires going to the mag I2C connection (SCL, SDA).

[startrek66]

Though I have heard a gps + Mag for apm should have 8 wires in total?