fatshark power switch

FatShark Power Switch : On/Off Switch for your Fatsharks

FatShark Dominator Power Switch Mod

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I love my FatShark Dominator V3.  One thing I don’t like about them is fumbling around to plug in the power cable.  I’ve always wanted to add a Fatshark power switch but never got around to doing it until now.  Adding a power switch makes them so much more enjoyable to use.

fatshark power switchParts used in this build

*Disclaimer: Do this mod at your own risk.  We are not responsible for any damage done to your equipment.

FatShark Power Switch Modification

Open the cover.  Remove the two screws and loosen the center screw.  Remove the power board module and unplug the wire harness.

Use a 5/8″ drill bit to drill a hole in the cover.  On the inside of the cover there is a circle injection mark.  Use that circle to mark where to drill.  If you put it dead center, the switch will line up perfectly inside the goggles.

fatshark power switch

Cut the tab on the back of the plug.

fatshark power switch

Cut three wire lengths

  1. Red – 40mm
  2. Black – 57mm
  3. Green – 58mm

fatshark power switch

Trim the tabs on the back of the button so it will fit inside the goggles.  Put the switch through the hole of the cover.

fatshark power switch

Solder up the wires like this.  This wiring diagram is setup to have the LED on the power switch to turn on only when the power is on.  This schematic is for this power button.

fatshark power switch

Note the green wire is soldered to the center tab and the bottom tab.

fatshark power switch

fatshark power switchfatshark power switch

Put everything back in the goggles in reverse order and you’re done.  Now you can leave your goggle battery plugged in and it will only turn on when you hit the Fatshark power switch.  The LED will be lit when the power is on.  Go fly!

fatshark power switch

If you found this post helpful, it would be super cool if you purchased the components from my store or purchase items from my Amazon links.  These posts are expensive and take a loooong time to make so the purchases make it possible for me to keep making them.  Thanks in advance, I greatly appreciate it 🙂






32 responses to “FatShark Power Switch : On/Off Switch for your Fatsharks”

  1. James Avatar

    Is this the same process for the Fatshark HD2?

    1. Mike Tseng Avatar
      Mike Tseng

      Yes it is!

  2. Pauley Avatar

    Very nice Mike ! I cant find the switch in your shop ?

    1. Mike Tseng Avatar
      Mike Tseng

      i don’t sell the switch but you can get it from amazon here: http://amzn.to/2qr1Mft


  3. Matt Avatar

    Does the wire need to be 22 AWG?

  4. zhakryn Avatar

    Hello ,do you know if it also work for the HD3,thx?

  5. Dave Zaitz Avatar
    Dave Zaitz

    Great modification, I did it in about an hour, I wasn’t able to find a blue switch on Amazon so I chose the green one which wires a little different, I first wired it by the same locations you showed and no power to the switch, I then switched the location of the red wire to the other location and it worked. I think you have to look for the small markings on the switch that have a “C” on it.

    Thanks Again!

    1. Mike Tseng Avatar
      Mike Tseng

      sweet man! green is cool too

    2. Greg Avatar

      Is this the switch you used?…if so could you explain the difference in wiring.Thanks a whole lot.


      1. Dave Zaitz Avatar
        Dave Zaitz

        The switch i used is a little bit different then the one Mike used, I believe the switch he used is available again. The one I used is here https://www.amazon.com/gp/product/B00Y3KD2LC/ref=oh_aui_detailpage_o02_s00?ie=UTF8&psc=1. The one he used is here http://amzn.to/2qr1Mft

  6. Eric Avatar

    Kind of off topic but I have been flying FPV with an older Headplay and then for the last couple years the Fatshark Attitude V2 (3?) Anyway, a set of Dominators with all these extra antenna’s would represent a BIG investment! So I wonder if the quality of video and reception would be any better, or better enough to justify that kind of expense… Darn, I could have cared less until I saw your mods Mike, but now I have Dominator envy…
    Anyone with experience care to comment?

  7. Saquan Avatar

    What size the wire gauge??

  8. AL Villalobos Avatar

    will this work with the HD3’s

    1. Mike Tseng Avatar
      Mike Tseng

      sorry i’m still rocking the standard v3 so I don’t know if it will work with HD3.

    2. Kelly Storm Avatar
      Kelly Storm

      Used motor wire which I think is 22awg and it worked on HD3…

      Thanks Mike

      1. Mike Tseng Avatar
        Mike Tseng

        awesome! glad it worked out

  9. Jeremy Avatar

    What gauge wire did you use?

  10. Eric Avatar

    I decided to take the plunge and ordered a set of the Core HD3’s. I’ll be installing the Furious Diversity V3.5 in these and hopefully this switch, I’ll let you know if it works.

    1. Mike Tseng Avatar
      Mike Tseng

      Ive seen a lot of readers do this mod to the HD3’s so it shouldn’t be an issue. thanks!

  11. Larry Avatar

    Just did this mod… i’ve totally been showing it off. Probably one of the most convenient ever. Also looks great as well.

    1. Mike Tseng Avatar
      Mike Tseng

      yeah man, i wish they would have just done this from the factory!

  12. Eric Avatar

    Works great, Thanks so much.

  13. Alex Wagner-Jauregg Avatar
    Alex Wagner-Jauregg

    I seen somebody do this switch mod but also wire in the fan power to it. Trying to figure out how to do that.

    1. Mike Tseng Avatar
      Mike Tseng

      that’s cool. but the fan already has a button so i’ll leave mine as is

  14. ManCub Avatar

    How to wire so the LED is always on when a battery is plugged in?

    1. Ranudar Avatar

      To habe the led always on when connected to the battery but the goggles only on when the switch is pressed, you’d have to connect the red wire to C and LED+, the N/O switch with the green wire directly to the fatshark PDB (same place as in instructions above) and LED- to the same place on the PDB as described above.

      So everything would be the same except that the red wire connects both C and LED+ instead of the green wire connecting to N/O and LED+.

      Haven’t tried it myself, just based on the understanding of the switch, so use this at your own discretion.

  15. BSharp Avatar

    Just did this switch mod on my HD3’s. Couldn’t get a fit with the trinity head tracker so I removed it. Wasn’t using that feature anyways. It would be possible if a smaller switch was used, but this one has all the bling bling.

    Mod works great. Was pretty easy.

  16. Chris Avatar

    Just to be sure this would be the same process for the Fatshark SEs?

    1. Mike Tseng Avatar
      Mike Tseng

      I haven’t done it on the SE so I can’t say. sorry

  17. Brian Miller Avatar
    Brian Miller

    Awesome mod! Just received a hand full of switches. Everyone wants a different color. Lol! But the all seem to have similar labeling. For an illuminated switch the center tabs are probably C, NO and NC. The sides are led and my eyes are gettin old i dont see a marking for the led neg -. The tabs you need are C, your common in(from power plug). The NO or normally open (which goes out to board pos+ Pad and bridged with tab led). Finally th unmarked tab across from tab led, which is the neg – for the led and goes to neg pad on board. Lastly the wire gauge. Were not dealing with a service entrance here so a nice flexible 22 or 24 should be fine

  18. Marcel Avatar

    It will work on Fatshark HD3..???

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