This is an old release!
Please use the latest version that you can find in the download section.



This program is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.


Operating a powered vehicle of any kind can be a lot of fun. However, nothing will ruin your day at the park more quickly than an accident or running afoul of the law. Since we want you to have a great experience, please make sure that you do all of the following:

  • Operate within all local laws and regulations. For example, in the United States, current regulations require you to operate most UAVs under 400 foot above ground level, within line of site, and away from obstructions and populated areas. Since these regulations vary from place to place, even within the same country, ensure that you understand what you need to do to stay compliant.
  • Never operate the vehicle or software in a way that could be dangerous to you, other people, or property. Propellers, while rotating, could easily cut you; if a UAV fell on a person or object, it could cause a lot of pain and damage; a UAV caught in power lines could cause an outage for many people. As Ben Franklin said, “An ounce of prevention is worth a pound of cure.”
  • Always keep in mind that software and hardware failures happen. Although we design our products to minimize such issues, you should always operate with the understanding that a failure could occur at any point of time and without warning. As such, you should take the appropriate precautions to minimize danger in case of failure.
  • Never use the software or hardware for manned vehicles. The software and hardware we provide is only for use in unmanned vehicles.

Changes and fixes:

  • Small corrections to navigation controller.
  • Corrected EEPROM bug where it will not be able to save Waypoints correctly.

The downloads are subdivided for users with normal PPM o PPMSUM.

A version for FRSKY users seems to fix radio problems with this module.

RC Radio compatibility list

This revision of code tested with these Radios RC.

Futaba 10T with Jeti PPM SUM module FRSKY TRSP.

Futaba with standard 2.4 g module R617FS.

Hitech Aurora 9 standard PPM.

Spektrum DX6.

 Don’t use the Futaba HS receiver with VRBRAIN. Futaba FS is ok

Before using RC radio not in the list verify in Mission Planner planner if there is a latency > 1 second.

If there is don’t fly before to solve the problem.

In the preflight check, control the radio rensponse also with already tested radio.

Software download links

Standard PPM:


There seems to be some problems with the FRSKY Radio module. If so try using the version of the firmware:


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