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
I'm using *******fpv's 1 gram 520TVL Nano CMOS camera with 90 degree lens. Not that fast because its a 2WD toy grade brushed canned motor at speed between 10~15km/h. Any child could catch up unless you do some brushless mods.
Ok, I'm confused... when I connect a 12v battery for Batt #1 and 5v power through a FatShark power/filter that also supplies the Camera for Batt #2 it will not work for me and the manual also says support 7.2v - 12v but you are using a 1 cell (3.xv) battery for batt #2 and it seems to work for you. How did you do it?
Oh yeah, I have it rigged to use just my main 3 cell battery supplying the 12v's via the XT-60 plug and the 5v comes through the balance plug on the same battery into the "FatShark Filtered FPV Transmitter Power Supply (2S/3S/4S)" which powers the 5v FatShark camera. There is a wiring diagram in the files section for using only one battery which I used and made a wiring harness before I read the manual showing it only supports 7.2v -12v. When I plug in a separate 2 or 3 cell battery to Batt #2 the E-OSD powers up - blinking LED - and I see the on screen display then. I don't want to run two batteries as this is on my 'Diatone 250 Mini Quad' and weight is an issue. I hope you or someone can help me?
xl-racing, I think I see what is going on... you're running your car with a 3.7v battery and powering your E-OSD with a 7.4v battery. So my 5v battery powering my E-OSD idea isn't going to fly. Damn FatShark and their 5v cameras. :-(
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.