What is CRSFShot? TBS Crossfire’s New Protocol

by Oscar

CRSFShot (Crossfire Shot) is the new protocol for the TBS Crossfire, which hugely reduces variable latency between OpenTX and Crossfire Module, and improves synchronization consistency, results in lower latency overall.

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There is a synchronization problem between OpenTX and external module. RC commands (stick and switch positions) from OpenTX are regularly being sent out by the external module (in this case, the Crossfire module), when they are synchronized, everything is fine. However when they are not synchronized, e.g. if the data packet arrives slightly too late it will have to wait for the next window, and that causes extra delay.

To sum it up, CRSF Shot has the following benefits:

  • Lower latency let you as a pilot feel more connected to your drone
  • Smaller RC command stepping, results in smoother PID controller performance cooler motors
  • Improves flight performance overall

If you use OpenTX and Crossfire, CRSF Shot is definitely worth trying when it comes out of Beta in the near future. You will need to update both your Crossfire and OpenTX firmware to have this feature.

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Pooria 24th April 2023 - 1:12 pm

thanks Oscar for all your efforts, Does Edgetx already support crossfireshot? or do we have to something to active it?

Oscar 24th April 2023 - 1:21 pm

It’s active by default if you have EdgeTX or OpenTX 2.3.12 or newer flashed to your radio.

Gregory 5th November 2020 - 1:37 pm

Hi all, can anyone point me to set up guide for VRSFshot for Tango2. I cant for the love of god figure out how to get this protocol.

btw big up Oscar for all you do for the community.

babipsylon 4th November 2020 - 6:01 pm

works on boht 150hz and 50hz?

Gregory Meskens 18th August 2020 - 1:14 pm

Does the Tango 2 run CrSFshot or is this only for native opentx radios?

Oscar 4th September 2020 - 2:57 pm

Tango 2 should also support CRSFShot :)