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Hi again. Here's Version 2. It now has an I2C interface for an optional GY-65 Barometer module. If present, the OSD will show Altitude, with Rising/Sinking indicators as well as accurate Temperature. I tried the Buck/Boost ideas to eliminate the FPV battery, but a small 500mAh 1S FPV battery works o...

Version 2 is looking better. i've tried the Buck converter thing and it adds Noise to the video, so decided to drop it in favour of a 3v7 1S battery to run the video transmitter. Works better. Sticking with the 16F1823, i used the idea of rotating the TRISC register to do the video output. This save...

If it gets Hot, then that's wasting battery juice.
I've ordered some bigger 16F1823 chips with 2 comparators in them.
When they arrive i'll remove the AMS1117-3.3 and add a Buck converter instead.
We'll see if that works.
If not, big heatsink !

Aw c**p. Obvious really.
The 3v3 regulator will get too hot at 3S, so i'll have to add a buck converter instead.
Please wait for version II - don't build this thing.

The Receiver circuit is dead simple :- http://i669.photobucket.com/albums/vv54/alin_qq/8-9.jpg FatShark Dominator RX module pinout - from Top to Bottom :- CH1 CH2 CH3 Video Audio R Audio L(?) GND +3v3 +5V With a Sony CMQ1684L camera, the parts cost me under 70 quid for a full Camera, sound, TX &...

Webshot.jpg Here's a photo. The two boards in the photo are the receivers. The one on the left fits in my FatShark dominator goggles, and works exactly like the 'official' one - even the channel button works normally. It's showing 13.5V because it's running on my Shed 12v system, not a Lipo. The co...

Doh again. The transistors i used were a 2N3906 on the left and a 2N3904 on the right (the audio amp). A BC109 A, B or C would work fine as the audio amp (which is completely optional). I dug out an ancient copy of Eagle to do a 'pretty' schematic, and forgot to change the Label. That's also why bot...

and IC1 is a 3.3v regulator, AMS1117-3.3 in this case, but any 3.3 v regulator will do.
I clearly have not thought this Post out at all

doh.
the green blob at the bottom right is an Electret mic.

Hi Guys. Today i got my cheapo FPV + OSD working. The Video transmitter is the TX5823-101016 off Ebay (200mW, 5.8Ghz). Displayed characters are a bit shaky, but totally readable. An external Crystal would improve it, but also add cost. The antenna i have is a cloverleaf from Hobbyking. You can make ...