{"id":6405,"date":"2020-09-17T08:19:17","date_gmt":"2020-09-17T08:19:17","guid":{"rendered":"https:\/\/www.getfpv.com\/learn\/?p=6405"},"modified":"2020-09-17T08:19:17","modified_gmt":"2020-09-17T08:19:17","slug":"runcam-hybrid-uart-camera-control","status":"publish","type":"post","link":"https:\/\/www.getfpv.com\/learn\/fpv-in-depth-and-technical\/runcam-hybrid-uart-camera-control\/","title":{"rendered":"RunCam Hybrid UART Camera Control"},"content":{"rendered":"

I\u2019m relatively new to FPV and wanted to build a really light-weight 3\u201d sub-250g freestyle drone without getting a separate HD action camera. The RunCam Hybrid seems like a pretty good compromise between function, cost, and weight for a 4k camera (with 1080\/120fps for those slo-mo crash videos). Coupled with the Ummagawd! Acrobrat Duo and the remains of an HGLRC XJB 145, it turned out to be a solid performer that suits my needs really well. <\/span>Watch Bardwell\u2019s series on this build that I discovered well after I was elbows deep in it.<\/span><\/a><\/p>\n

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\"Runcam<\/span><\/p>\n

This article was submitted through the\u00a0GetFPV Community Program<\/a>\u00a0by Karl.<\/p>\n

Disclaimer: This article was written solely by a member of the FPV Community. Views and advice in this article are that of the author and does not necessarily reflect the opinion or views of GetFPV.<\/em><\/p>\n

However, HD video file sizes get enormous and I wanted to just record when I\u2019m already up in the air or ready to do fun tricks, so I decided to play with UART camera control.\u00a0 Note: I am using BetaFlight 4.1 so your mileage may vary.<\/span><\/p>\n

RunCam Camera Control <\/span><\/a>has been built-in to BetaFlight since 3.2.0. <\/span>Oscar Liang has a good general article detailing how to get it setup.<\/span><\/a> The protocol has gone through an evolution of hardware support and requirements, with resistors, and different protocols, and <\/span>converter modules<\/span><\/a>. Currently it mostly works directly wired to a UART and the rest is done in Betaflight configuration.<\/span><\/p>\n

The Hybrid does things a little differently and actually has <\/span>two independent controls<\/b> built-in to the one board, which give you two different functions. I found this extremely confusing at first so I\u2019ve tried to sort it out and document trying to get control setup via UART.\u00a0<\/span><\/p>\n

What can I control?<\/span><\/h2>\n

The hybrid has both a FPV and an HD configuration that are handled by two separate UART connections and are responsible for different parts of the controls. Below is the missing diagram I created from their <\/span>documentation<\/span><\/a> that fully explains the pins:<\/span><\/p>\n

\"Runcam<\/p>\n

As you see there are two <\/span>different <\/b>UART RX\/TX pairs that handle different functions:<\/span><\/p>\n