- ARV1000 video goggles
- ATX40 Mini CCD camera set
- 2.4GHz 700 milliwatts transmitters module (with ARX40 Receiver)
- Battery for the camera                                     
- ServoCam pan/tilt camera mount

INTRODUCTION

Two axises movement tracking gyro control system is a kind of high tech system by using modern sensing technology to track head movement, the Gyro control module is intended to be used for FPV(First Person Version) R/C model operation, a relatively new approach that is developing fast as it is very close to providing the impressions experienced in a manned vehicle, it was developed to be compatible closely with commercial R/C transmitters that support the trainer/student function.

A typical FPV setup uses a wireless video camera on R/C model, and a set of wireless video goggles on the ground. But if the whole system is upgraded by adding Gyro control sensor in this way:the camera is mounted n a pan/tilt assembly driven by 2 standard R/C servos. Each of them gets connected to a free channel on the R/C receiver.The head tracker is wired to the R/C transmitter using the trainer port. The TX will then send the user’s head position on 2 axes along with the model’s other controls, allowing real-time operation. As the live video image is displayed on the goggles’ screens, the user can look around naturally as if he was physically in the model. The system was intended to be as easy to use as possible, compatible with current R/C hardware, and very discreet. These goals have been achieved using the trainer port as an interface, and with the help of gyroscopic technology for motion sensing. This has the great advantage of not needing any fixed reference point to measure yaw position, whereas other systems rely on a transmitter, mechanical arm or other devices that limit the user’s freedom of movement.

 

The final module is available in 2 versions, that is as a stand-alone device, or already be integrated in a set of high resolution video goggles. The first will allow the user to adapt

it to existing equipment, and the second ensures the simplest plug-and-play approach,where the only difference to a standard system will be an extra plug to connect to the

R/C TX.

Compatibility：

The Gyro control was developed to be compatible with commercial R/C transmitters that can

support the trainer/student function. It generates the same signal that would be expected from a student transmitter, and sends the 2 positions (pan / tilt) on 2 user defined channels (default: 7 and 8 respectively). It sends neutral positions for all the other unused channels. There are 2 types of R/C transmitters regarding the trainer function. Low-end models often use a trainer switch to hand all channels to either the trainer or the student. This type cannot be used with the Gyro control at the moment. An additional module available in the future will allow it. Others can let the user choose which channels should be handed to the student and which should remain to the trainer’s control when the switch can depressed. This is what is needed.

 

Among these transmitters, there are 2 more types: Type 2 can use their own settings (mixes, end points, directions,…) and apply them to the stick positions of the student’s transmitter. This is the most comfortable type to use with the Gyro control, as the settings (end point / direction) can simply be programmed in the TX, for each model.

Type 1 only takes the student transmitter’s signals for the chosen channels and sends them without processing. This means all needed settings must be done in the student TX.

The Gyro control has options to define them by simple button/LED programming to allow use with that transmitter type. However, that means the adjustments will have to be carried out again every time the sensor is used with another model. Other configurable options are implemented, please see the “programming” section for more details.

 

 

Installation of the sensor

This section regards installation of the stand-alone version of the Gyro control. If you bought the VR1000 goggles, you can skip it as the sensor has already been installed properly inside the housing. The module measures angular positions around 2 axes, like shown on the picture below. It’s very important to align them to your head’s rotation axes, so that the measured movements are independent. If not aligned properly, the sensor will report false information which is very disturbing during use. The unit should be mounted so that it is flat when you look straight, and the cable exits either in front or at the back. To ease installation, you can attach it to a cap, or directly

fix it to your video goggles. That way you won’t have to think about it again, and you’ll be able it to transfer it to another person easily.

 

Installation of the camera

For use with the Gyro control, your camera needs to be mounted on a pan/tilt assembly that uses 2 R/C servos. Standard R/C servos will give about a 90° total throw, which is enough for the tilt axis. However, it would be very comfortable to be able to pan over a wider range. This can be done by hardware servo modification, but in order to ease you the task we have developed the ServoMAX module that will double the movement command received from the TX once plugged between the receiver and the servo. This allows using the maximal throw the servo’s mechanical limits will accept, usually around 180°. We recommend using it on the Pan axis servo.