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HobbyKing E-OSD A very simple OSD (On Screen Display) for FPV users who want to see their 2 or 3 cell LiPo voltage level while flying. Very easy to install; runs in line with your battery and also your video-out wire.
Features: Voltmeter & Stopwatch Double Voltage Input Manual Calibration Programmable Display Content Supports NTSC & PAL Anti-Glare Shade Control Signal
Specifications: Weight: 3.3g Dimensions: 34 x 17 x 4mm Working Voltage: 7.2~12v
Hello, can i use this osd and how, if i use my fatshark camera, and video tx, and i power them both with the same plane's battery ( discharge plug 5v ). Thank you !
DO NOT USE MORE THAN 3 CELL LIPO (Or 12v) For power source
everyone keeps saying to connect it to the Battery (only if 3s max)
otherwize use your VTX supply line if 12v max
Its the way composite video works, you can just add more data to the wire. Plug this in SERIES with your video and ground.
Hope I helped, message me if you need more details...
Can I power the OSD from balance plug or do I need to use the main XT60 connection of the battery? If I use balance I get the numbers but they are all wrong.It is working it's way from 12.60 down to 12.30 and when I power off motors its raising back to 12.60
I tried to connect the OSD directly to the TX with no cam I expected to see numbers on the screen but I didnt is this normal, also the LED was flashing ?
Can this monitor two lipos at the same time? I got it working on my main lipo plug to batt2 but if i plug a battery on batt1 it does not show it on the screen.
want to slap this to my f450 with gopro 200mw vtx.
1. how do I connect the OSD-gopro-200mw vtx-batt?
2. what wire/cable do I need to do make this connections?
.....thx
Can I power the OSD from balance plug or do I need to use the main XT60 connection of the battery?
If I use balance I get the numbers but they are all wrong.It is working it's way from 12.60 down to 12.30 and when I power off motors its raising back to 12.60
Nã*o superaqueceu, estou pensando em usar somente em uma das portas pois uso 1 de 4s para os motores do hexa e 1 de 3s para o transmissor de ví*deo.
Obrigado.
I did test it with 4s and worked with no problem. I only use 4s at 2nd battery port, the battery por that powers the E-OSD I still using my 3s battery. Thanks again.
you just have to wire the "video" pin parallel to your video signal. The OSD just overlays the video signal with its numbers of the measurements. So there is no need of an video in or video out pin.
Also make sure you connect a battery to ground and BAT pin to power up the osd.
Yes exactly as you described. just connect the Vout from the cam the Vout from the OSD the "Y"-way and then to the transmitter. The OSD detects the sync-signal from the cam and overlays the signal with the measurements.
There is no GPS for this unit. You could flash it with CL_OSD firmware and solder a GPS to the board, but for that you have to have excellent soldering skills. And even so, it probably won't last very much. In my opinion, you should get G-OSD and flash it with CL_OSD firmware. You will get a nice, cheap, configurable OSD. I have both units: the E-OSD with original firmware and G-OSD with CL-OSD firmware. I am now using G-OSD and i am very satisfied.
Does anyone know where I can get the source code for this OSD? This runs a simple ATMega chip and as such could be reprogrammed to do pretty much anything. It has a FTDI port, so if I break it I want to be able to reflash it :)
Just Google CL-OSD. You shall find the project in the first results. On the project page you shall find detailed information about how to configure and upload the code to E-OSD. Note that CL-OSD is for both E-OSD and G-OSD.
Hi,
Is this normal? When I plug this E-OSD to my system the upper side of image (aobut 1/5 form uper edge) is distorted and all red/orange colors at entire screen are going very bright and they filker when you turn camera :S Otherwise it works quite well..
Can I hook this thing up into a balance plug of my 6S Lipo? I need to measure voltage and thinking of measure cells 1-3 and 4-6 separately with this unit.
Or there are units out there which can handle 6s (24V) voltage?
If u use more than one osd then yu would be able to monitor all cells. You wouldn't be able to monitor them sepretly with this unit because it only has two battery in's. you would be able to monitor 1-2, 3-4, 5-6 seperetly, though you would need 3 FPV transmitters which wuld be costly and heavy. If you were to monitr all cells then you would be able to use 3 of them with one FPV system.
Oops! I was thinking about the super simple OSD. with this module u would need two 3s batteries. I'm not sure about what C rate you would need as I'm not to famillier with battery terms, but I think you would need a combined C rate. If anyone knows please post it.
Just got mine connected to my ftp quad setup, but I see no osd when I power everything up. Can't figure out what I'm doing wrong. One battery setup, so setup is quite simple. Anyone with similar problems?
Hi, is this OSD accurate enough for measuring RSSI? I know I can easily connect it to RSSI output but is there the same problem with "steps" in which the voltage is measured as with Super Simple OSD? It is necessary to mod it like this osd?
*******fpvlab****/forums/showthread.php?3146-Su per-Simple-OSD-Mods-(4s-RSSI)
Thanks!
depends on your rssi voltage - some rssi voltages only go from 0.80v (no reception) to 1.2v (full reception), spanning 0.4v - which will not be many steps in an 8bit adc conversion. you can use a cheap opamp to spread the voltage resulting in more steps/resolution, but some electronics knowledge/soldering is required.
find the cameras video wire (it might not be colour coded). google for a datasheet for the camera if required and hook the video out of the osd in parralel with it to the video tx.
My friend has had been wearing the goggles mostly for testing. I had a short 30 second flight with them, then felt a bit sick! but its just getting used to them. They are currently on a RadJet, ready for a test flight =P you?
is it possible to use this one with 4cell lipo? i know it states it doesn't, but i have heard something about it being able to handle 4 cells.
thanks in advance!
I plan on powering mine using a 3 cell, but 4 cells shouldn't be much of a problem. Most if not all components of an FPV system are designed to run off of 12 volts, and can tolerate overpowering or underpowering. Just make sure there is some airflow moving over the OSD and ESC and you should be fine.
I tested the HK EOSD on my naza FPV quad. It worked very well and the voltage reading was acurate. No problems with the video. I hooked up my RSSI to the second bat input.
my camera only have 3 wires.
Red - goes to battery
Black - goes to battery as well.
Yellow - (shall go to VTx)
To use this OSD, i understand that I should connect the yellow wire from Camera to the Video port on the OSD. then, where to get the 'ground' ?
Have a look at the files folder on the right. There you will find a file called EOSD Wiring (2110Kb). I think this picture will explain the way to connect it.
from the wiring diagram, it shows that 2 cables come from the camera. i trying to figure out where does the black wire actually come from since my camera output only has yellow wire.
The yellow wire from the cam goes to the Video plug of the OSD. The black wire from the cam goes to the [-] plug of the OSD (just beside the video plug). The red wire of the cam will be connected to a Lipo plus pole. (if you have a 12V cam)
i am bit confused with the setup of osd, could someone please explain. a) my camera has about 4 wires coming out of it, the connector takes 3/4 pins, do i have to split the cable? if so which wires go where. b) i didn't realise you needed to connect to balance cable of battery, i thought you could just connect batter for fpv tx. could anyone recommend site with good idiots guide to fpv\osd? thank you
You will need to wire up the yellow and black wires from the hook up set in parallel to the camera! For the battery connectors, you should be able to solder up a connector that plugs into the balance port of the battery (should only need to solder 2 wires between the red and black of the balance port). You might need to make your own wiring harness, but that isn't too difficult! Hope this helped :D
Hi the file which shows the setup picture doesnt show the other ends of the wires. Could someone explain properly how to rig this OSD up? Does it connect to the balance lead on the battery? If so, how? Is some kind of tandem connector needed to connect to the video wire? Thanks.
Yes, you can use the balancer cables. You use the very left and very right cable of the balancer plug (The two outside ones). Black is minus and red is plus. With these cables the osd can measure the Volts of the Lipo. You maybe have to solder a female balancer plug on the cables which goes from the OSD to the Lipo. You can buy balancer leads from hk and cut them in the middle and remove the needless wires.
The video cable has a black (minus) and yellow (video signal) wire. To make the camera working, it needs a connection to the plus-wire (red) of a lipo. But watch out! Do you use a 5V or 12V camera ? A 12V Camera is ok. If you use a 5V camera you need a reducer.
Hi Alexander, thanks for the reply. I understand the balancer cable part now. For the video cable though I'm still not clear how to attach it. I have a 12v camera so thats fine but how does it connect to a red wire from the lipo? Also for the connection to the osd the instructions says it has to be connected in parallel to the yellow and black wires? Is that in addition to the red wire connection to the lipo?? Sorry for all the questions, this thing is just confusing me!
Call me slow,but I read all of the above and was still not entirely sure how to wire this thing. Searched a bit around and found a good picture that explains it all. Look at the picture under the files tab. Hope it helps.
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Like it?
Just got mine. Works fine. It is worth the price. Pretty simple to monitor FPV pack battery or motor battery (if under 3S). There are some interesting projects to do RSSI monitor (check rcgroups). You have to to make a Y connection between camera wire and tx wire to the OSD (video input) i.e camera signal and tx signal going into video input on the OSD. Gnd can come directly from pack.
Worth every cent! Easy to calibrate and clear text on screen. Use it on my FPV multicopter to show main bat V and Video Tx V. If your into FPV you need this good cheap reliable OSD! To marks HK :-)
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