With all the new modules coming out for Fat Shark Dominator FPV goggles, i was feeling a bit restricted with my measly little Fat Shark Teleporter V3 goggles. The reduced resolution i can deal with, the lack of DVR and HDMI output, that nice face pad with foam looks like it would be comfy over the rubber suction like cups, etc, but the 7 channel receiver has me a bit envious of my brothers Black Pearl 32 Channel Diversity Monitor, i can only view Fat Shark channel bands which means im not able to view other feeds if i go to events or i wanted to watch my brother fly with his Boscam transmitter.
I initially started searching out diversity monitors, or dvr monitors, any monitor where i can share the ride with friends or family who are with me when i fly, but the price to entry is still over $100 for a decent 5G8 monitor and it still doesn’t really solve my initial issue, the goggles still only have a 7 channel receiver.
Never one to settle with limited hardware I started googling up pictures of the dominator module pinouts and doing some research on those and the aftermarket ones like the LaForge module from UBAD and a few others i came across.
After opening up my Teleporters i got a good idea of all the inner components, they seemes to be somewhat individual items, with the reciever especially being its own unit, almost like a fpv receiver soldered onto a breakout board. for example if you look at this bare FX758 module from banggood and compare the pinouts, its a pretty direct output to the pinouts to the module.
My theory is that the reciever is just like any other reciever, so the CS pins probably control channels, the ground and VCC are also inputs, the only real output is Video and the two audio channels, but really it just needs video output so as long as the reciever gets power to turn on and sends a video output, the goggles screens should just pull that analog video signal and feed it to the screens like any old TV or monitor, and like most manufactures who want to create a ” line” of devices from the same materials and just either software limit them or hardware limit them, in this case it was just mainly hardware limited as the lower quality screens and non removable reciever.
To save money on a “hunch” i ordered a FSV2442 32ch 5G8 Race Band Receiver Module from Amazon to test my theory out at a lower cost in case i got it wrong.
I figured if anything was going to work it would an official Fat Shark Module, plus i should be able to use the stock buttons to change the channels and such. So i ordered it and got it taking apart the goggles.
The stock board that the receiver plugged into said DOM-RX-1.0, a good sign for my theory, and just like the reports i hear of the altitudes being hard soldered, this one was also hard soldered. I took the boards over to Surface Mount Solutions and had it desoldered (watch that third pin from the bottom its GND and it sucks in alot of heat)
After that i went about getting the Male-Female pins soldered onto the stock boards but two mistakes, i had the female pins soldered to the wrong side of the base board (whoops!) and i also had the male pins soldered in the standard way you would usually use them, unfortunately, turns out this makes the board stick out too far away from the base board and it wont fit back into the case Apparently you have to push the plastic part of the pins to the top/bottom? of the pins and insert them through the holes from the top as seen below.
Its actually a interesting way to mount header pins in a lower profile, i think i may want to try this on my next flight controller install if i use headers.
I received the new receiver from amazon and checked it side by side with the stock module
Last thing is to install it and test it
It powered it up and plugged in my FX797 Camera/Transmitter combo and powered on my goggles and immediately got a picture. Great it works!
*one note i have to add, the instructions are kind of confusing, the module itself has two dip switches, switching them UP puts them on the ON position and DOWN to the OFF position. According to Fatsharks instructions, the Fat Shark channels should be on 0-0 or OFF-OFF, but according to the sticker on the module it shows both dip switches as Up-Up, which would be 1-1. this is kind of confusing as i read the White dots as the switches themselves, when i think they meant the Black bars to be the dip switch positions.
**second update, i was having VTX issues with my transmitters and found this image for my transmitter that helped explain the dip switches on the VTX, i thought White was the pin but it seems black was the pin the whole time.