Hello there, fellow FPV nerds.

I've got this super cheap HolyStone HS210 quad that I received as a gift a million years ago, and I've only now pulled it out in an attempt to make something useful out of it. I want to slap a VTX Cam AIO onto it and turn it into a classic ol' tiny whoop! 

I've built whoops before so I have *some* experience doing so, however this has proven to be a little more difficult that I initially anticipated. I need to solder the VTX AIO leads onto the board, but I can't find any 5v solder pads on it. Do I need to do a special soldering contraption directly to the battery solder pads? I searched the interwebs to find a diagram of the flight controller I'm working with here, and I seriously cannot find anything at all. Any advice?

Also as a sidenote; I would also like to try and bind it to a TX16 or some other multi protocol controller... does anybody know what protocol the HS210 uses? I saw somewhere that it's bayang but I have absolutely now clue how to bind this FC!! Such an interesting puzzle indeed....

Thanks in advance!

If your VTX/cam is 1S capable then you can solder it to the battery lead pads. However if you already have other whoops, it probably won't be as fun to fly. No idea which protocol it uses, back in the day I had a M8 Mini which could be flashed with Silverware and was compatible with the multi-module, and I think recently the B03 (also Silverware compatible) was found on ebay too.
https://www.rcgroups.com/forums/showthre...p-for-sale-!!!

Also maybe you can get some info here
https://www.rcgroups.com/forums/showthre...-HS210-FPV

(29-Nov-2023, 04:32 PM)mstc Wrote: If your VTX/cam is 1S capable then you can solder it to the battery lead pads. However if you already have other whoops, it probably won't be as fun to fly. No idea which protocol it uses, back in the day I had a M8 Mini which could be flashed with Silverware and was compatible with the multi-module, and I think recently the B03 (also Silverware compatible) was found on ebay too.
https://www.rcgroups.com/forums/showthre...p-for-sale-!!!

Also maybe you can get some info here
https://www.rcgroups.com/forums/showthre...-HS210-FPV

Ahhh thanks for the input. I was actually building this quad for my father so he can fly around the house with me during the cold winter months, and I think the auto-stabilization feature on the HS210 will be better for him as he is a total beginner. The camera AIO I was thinking of weight a little over 2.8 grams, which should be ok...? Maybe I could even upgrade the motors idk. I would also like to try and figure out the KV of the original motors.

Yeah I don't even know if the flight controller has the ability to bind to another controller (even if it has the same protocol...) it's the crappiest cheapest quad I've ever worked with but somehow it flies surprisingly well! If I could bind it and possibly flash silverware that would be the ideal.

I think, from what others have said, most of these cheap quads run bayang or some derivative of it, so it's possible a radio with a multiprotocol module would be able to bind to it.

I have done similar to you. My brother bought my nephew a small toy LoS quad last christmas. So I bought a cheap 25mW vtx/cam combo and his dad then soldered it to the battery lead pads. It worked a treat, but he still flies it LoS. I ended up building him a whoop shortly after that, so he now flies a full one too. Your plan should work ok.

There is a long list of toy controller protocols/subprotocols supported by the multiprotocol module so maybe you will get lucky, but might take you a while to try them all. As for flashing Silverware, it is only supported specifically on a few boards (alienwhoop zer0, bwhoop, e011, or H8mini_blue_board). The $18 Santa whoop in the ebay link above has the E011 board and I believe uses the Bayang protocol.

NFE Silverware github
https://github.com/NotFastEnuf/NFE_Silverware

And this branch specifically for that model even allows you to turn on/off the music.
https://github.com/tulingBerg/SantaWhoop

But Silverware is probably only interesting if you want to fly acro. If your HS120 flies well enough as is then maybe just stick with adding the FPV camera. For these tiny brushed whoop motors, I think they are somewhere around 17-21000kv.

Now I'm tempted to pick up that Santa whoop for some nostalgia...