CL-OSD a open source osd software for E-OSD and G-OSD - Page 68 - RC Groups
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Dec 22, 2011, 04:10 AM
Registered User
I need help please!
I just received my GPS module from DX.
And I don't know how to connect it to my E-OSD.
Please post some pictures showing the pin layout of the GPS and the OSD
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Dec 22, 2011, 09:20 AM
Registered User
mark963's Avatar
Last edited by mark963; Dec 22, 2011 at 09:38 AM.
Dec 22, 2011, 02:19 PM
RC pilot by soul
Originally Posted by leprud
Yep, these modules (and nearby) are excellent for CL-OSD (4800, 1Hz, NMEA). Don't forget to get antenna also!
I salvaged mine Lassen iQ from car alarm, also tried module from cheap usb-gps.

This is how i attached all together (used glb's 3$ "for bluetooth" board for 3.3V and as plate support for gps module), stock gps antenna with magnetic base and 3m cable was stripped to this size.
Attachment 4338074 Attachment 4338075

I got the same Lassen IQ module and just ordered a GPS antenna from DX, in order to do this mod like you did.

Can you please explain how did you wire everything up ?
Dec 23, 2011, 01:11 PM
FPV! and nothing else matters.
guy1a's Avatar
not getting any fix for the GPS...

how can i debug to see if the GPS is sending data / the device is receiving data ?
Dec 23, 2011, 04:11 PM
Suspended Account

LOS is wrong sometimes when i'm right overhead. for example altitude will be 1200m and LOS only is 800m or so.
Dec 25, 2011, 02:21 PM
RC pilot by soul

Does any one of the new versions of CL-OSD support a current sensor already ?
Dec 25, 2011, 02:58 PM
Suspended Account
idk man i havent flashed mine for a couple weeks. happy with my setup as of now.
Dec 26, 2011, 04:22 PM
Registered User
Joern's Avatar

i had my first fpv flight with the cl-osd firmware on G-OSD II. It was fantastic. Thanks for the great work! We hat grey sky and it was cloudy - so it was difficult to read the upper line and the home arrow, because it was white text on a grey background. So my question. Can i change the color of different lines and of the home arrow from white to black? This would help a lot.

Dec 26, 2011, 07:03 PM
Suspended Account
no i dont think so but youbcan move stuff to the bottom in layout.h
Dec 27, 2011, 05:30 AM
Registered User
Originally Posted by Joern
So my question. Can i change the color of different lines and of the home arrow from white to black? This would help a lot.
Because of the way E-OSD and G-OSD are designed and work it is not possible.
Dec 27, 2011, 07:37 AM
Registered User

Success with update-Rate >1Hz?

Does anybody successfully use an update rate of 2Hz or more for E-OSD and GPS?. Do you see less latency than at 1Hz? (eg. for home arrow)? What is the highest rate you have successfully tried?

I tried 4Hz for OSD-Loop and GPS Globaltop PA6C GPS @9600 baud. I limited GPS-Messages to GGA and RMC so it used about 70% of Bandwidth @9600. Result: Sometimes very strange values are displayed (e.g. 110 satellites are tracked) - I guess it is transmit-errors. Has anybody else seen this behaviour?
Dec 28, 2011, 06:28 AM
Registered User
Originally Posted by zonk_1976
I recently bought a second hand GPS unit (SIRFIII) that had a default firmware locked to 19200bps. Since I wanted to use it with my e-osd, I had 2 possibilities :
1. Set the cl-osd code to use 19200bps
2. Change the GPS unit baud rate to 4800

Trying option 1, I faced the same problem related in post 588 by Davico : The cl-osd code obviously looses some caracters at that speed and displayed data is terribly inconsistent.
Hi Zonk,

My issue (588) turned out to be an actual bug with the initialisation of the AVR UART, it was fixed in r66. I have been running CL-OSD with my GPS at 38400 baud with no issues since then. Note that I am using the DIYD/APM code, rather than the NMEA code, though I'm pretty sure I tested NMEA at 38400 also.

Dec 28, 2011, 11:58 PM
Registered User
Not quite sure how to use the google code stuff, so I thought I'd post here just in case. I ordered a g-osdII from hk. Is there any way to implement an rpm sensor? I could use battery 1 as battery, battery 2 as rpm, and input 3 as rssi...

I also read earlier in the thread that the 3rd pot does nothing with the new firmware, is that still true?

This is an awesome project, I'm looking for ways to contribute too . Big thanks to all the authors!
Dec 29, 2011, 08:09 AM
erazotropa's Avatar
Hi all, i have been out for a while.. are there any latest good fixes of the G-OSD firmware?
I have got my G-OSDII today, and want to flash it with the latest firmware + fixes..
Dec 29, 2011, 08:41 AM
Registered User
schumixmd's Avatar
what fixes do you need?
it still cannot predict your next turn

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