Ah okay. I just want to measure one voltage more on the E-OSD and will power it by an external 5V voltage regulator which is directly connected to the FPV-Lipo.

Originally Posted by superjelli

Ah okay. I just want to measure one voltage more on the E-OSD and will power it by an external 5V voltage regulator which is directly connected to the FPV-Lipo.

Ok, if you are not using it for servos it will be fine.

Originally Posted by superjelli

Would it be possible to remove the 78L05 from E-OSD, power the whole unit via 5V directly from the programming pin and still use BATT1 to measure a Voltage?

FWIW, I'm powering my E_OSD from 5v directly to the +5 on the programming pin. Haven't flown it yet but seems to work fine.

I de-soldered the 2-pin Video/GND header and replaced it with a 3-pin header where the third pin was straight instead of right-angles. Then I soldered a tiny wire from the third pin to the +5 programming header (which is very close).

This really suits me as I have a 5v (fatshark) camera connected to a fatshark vtx which supplies 5v. These are connected together using a regular 3-wire servo cable (vid/+5/gnd, I dont use audio). I simply put a y-lead into this cable and connected it to my new 3-pin connector on the E_OSD and I get video/gnd and +5v all in one! I have a second cable which connects to my GPS.

I dont currently use any of the batt connectors. My only onboard battery is a 4S, not sure if I can monitor that or not, does anyone know if the voltage-divider can monitor 4S ok?

Dave

PS. I can post pics of this mod if you are interested.

i would plug into the first 3 cells.

does anyone have a picture of the dimming resistor? i cant find it!

Originally Posted by chatch15117

does anyone have a picture of the dimming resistor? i cant find it!

If you look at this schematic (it's for e-osd but g-osd is almost the same) you find R8. That's the dimming resistor.
Now on you board look for a resistor with 121 (120 ohm) on it (there is only one). That's the dimming resistor irl!

On the g-osd it's the one closest to the programing port. On the e-osd it's close to the programming port.

Thank you very much, I see it now.

I get "pencil mod" from computer hardware. Back in the day we would pencil resistors to raise the voltage for core and memory(allows higher overclock). Same thing should work here

http://www.techpowerup.com/articles/...voltmods/101/2

I've penciled the resistor from 120-121 ohms to 114 ohms. Will test and post results.

101 ohms



I will probably make it 90 ohms (if I can put that much graphite on there lol) to make the text extra readable.

Edit: it leveled off at like 99 ohms.

http://www.youtube.com/watch?v=lsLHJZvnfrw

2nd flight(not recorded due to low laptop battery) results:



Stats are a little wacky. I don't think I went 255kph or NEARLY that high. LOS is correct though. I went to 750m today. Next time there is no wind I will try 1km+

so it appears the original G-OSD with GPS etc... for less than $40 doesn't exist anymore... Given funds i am kinda stuck getting the E-OSD.

What exactly can the CL-OSD software do for me in the case that i only have 1 or 2 E-OSDs and not a full featured OSD like G-OSD?

Can i add GPS to the E-OSD and be able to display that info? Or... is the processor in the E-OSD limited in capability/functionality?

same processor. you need to get a gps. I tried and failed. You can have my GPS chip if you live in the US

Originally Posted by chatch15117

same processor. you need to get a gps. I tried and failed. You can have my GPS chip if you live in the US

Great! Super interested! Pm me details?

Read carefully caall. It is not the same board. Less input pins. G-OSD has batt1,batt2 and rssi.
Soldering to connect GPS to E-osd is not easy.
Tiny soldering pads. There are pictures in this thread.

Parity

Hi. I just want to show you guys my results. I changed CL-OSD to use it with an E-OSD unit to show an artifical horizon indicator. Therefor I desoldered the 5k1 resistor of the voltage divider of the main battery, which powers the unit. I am still able to power the E-OSD with my FPV Lipo (11.1V) but I cannot measure that value anymore. Thats not a problem because I read that value with my G-OSD. I tried to read the values out of the MMA7361 (accelerometer) which worked, kinda. But it gave me too low voltages on the OSD. So I built a voltage follower and just put it between the E-OSD and the accelerometer and then I got the right voltages. Now I was able to measure small voltages directly so I soldered the x-axis-output of the accelerometer (via voltage follower) to the input of the E-OSD and soldered the y-axis behind the 5k1 resistor so i skipped that voltage divider as well. Then I changed the CL-OSD firmware which took a little while and now I have got a nice little AHI for 20$. Here are some pictures...

Here's the unit which can be powered directly with 8-14 Volts and outputs only the AHI.


That is my whole FPV setup consisting of a 900mAh FPV-Lipo, a transmitter, a camera, one G-OSD, one E-OSD (both flashed with my own versions of CL-OSD), the receiver with selfmade RSSI output (including voltage follower). In this picture the GPS is missing.


Thats the result with both, E-OSD and G-OSD, working.

Originally Posted by caall99

so it appears the original G-OSD with GPS etc... for less than $40 doesn't exist anymore...

http://abc-rc.pl/p/63/2770/plyta-pol...125mm-fpv.html

Maybe this will do

guys .. this is pretty amazing !
is there somewhere along this very-long-thread a complete walk through ?
it is very difficult to follow all the tech data ..

i have one of those https://www.hobbyking.com/hobbyking/s...dProduct=19369

and one of those https://www.hobbyking.com/hobbyking/s...ing_E_OSD.html

are they any good for this project ?

thank you !