Replacing Vision+ Gimbal w/ H3-3D, Need Help w/ Telemetry

Joined
Oct 21, 2014
Messages
7
Reaction score
0
I am working on how to install an H3-3D on my P2V+ through the stock Wi-Fi module. I have been doing research on it, but some of it is simply above my head and I need some help.

Getting a live feed is the easy part. My plan is to remove the stock anti-interference board and replace it with the one that comes with the H3-3D. I will take the 8 pin cable from the Zenmuse port to the stock AI board and connect it to the H3-3D's AI board. From there, I will run the an 8 pin cable to the H3-3D. That should route video through the CAM port the same as on a non-Vision Phantom, and I can simply splice video ground and video signal into the Wi-Fi module as if it were a wireless video transmission module (along with power from the CAM port). The problem is, I can't get telemetry this way. On a normal phantom, this would be handled with an iOSD mini that got telemetry from the CAN bus and overlaid it onto the video for sending, but the Vision+ has that built in (and doesn't simply overlay the image, but sends back the actual data) somehow on or through the gimbal board or Wi-Fi module. My question is, how does telemetry data get from the CAN bus, through the stock gimbal board, and to the Wi-Fi module? From what I understand, CAN protocol is physically different than UART, and what is coming to and from the Wi-Fi module is UART, so there must be a conversion from the CAN protocol on the CAN bus to the UART of the Wi-Fi module. How and where does that conversion take place?

Others on a different forum seem to have made this work without the stock gimbal board (gotten telemetry, set waypoints, etc) using a different gimbal/camera, but they never got around to explaining exactly how. I know it is possible, but it's a little out of my league.

If anyone could shed any light on this or give me a good starting point on understanding how information gets from the sensors on the Phantom to the app, I'd appreciate it greatly. I'm not looking for a how-to (though I won't turn it down either), but more of a how-all-this-works-and-here-is-what-that-means explanation from someone I can learn from and ask questions. I don't mind doing legwork and learning a lot, but I really have no idea where to begin since this involves so many things I don't quite understand.
 
Re: Replacing Vision+ Gimbal w/ H3-3D, Need Help w/ Telemetr

I've got the telemetry to work. It was as easy as plugging in the 6 pin cable from the Wi-Fi module into the CAM port. I knew there was a UART connection here like the one coming from the Wi-Fi module and suspected it was a connection to the flight controller, but it took a while to confirm. Now I need a way to talk with the GoPro to activate picture taking and video. Any suggestions?
 

Members online

No members online now.

Forum statistics

Threads
143,066
Messages
1,467,358
Members
104,936
Latest member
hirehackers