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I have been working on a new miniquad project where I did plan to use VRBrain controller, but now I must redesign it for the new VR Micro Brain :-)

I plan to use:
- 16mm carbon tubes (so I can mount ESC inside the tubes)
- 20A Slim Afro ESC
- SunnySky 2204s 2300Kv motors
- HQ Prop 6x3 Carbon Composit Props (some info on the motor/prop combo)
- VR Micro Brain :-)  + GPS + Telemetry radio
- Have Zippy Compact 1000, 1500 and 2200 3S that I plan to test

Here is some of my ideas so far:
Motor mount

One of my frame ideas:

A other frame testprint (43gr)


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Dear Friends,

today we going in production with the first batch of micro brain 5.1 board. After see some micro drone based on vrbrain fly , we decide to support the development of this great platform ... so we start to develop a special revision of VRbrain 5  for this kind of products where the small dimension and low weight are very important factor.

This is fully total autonomous platform available for micro drone.

These are the specification : 

CPU STM32F4 VR OS based on NuttX kernel.

1 EEPROM or FRAM device for parameter storage. 


MSIC Barometer 10 cm resolution.  

8 PPM Radio RC Input .

8 PWM ESC - SERVO Output.

1 SBUS Radio Input compatible with Futaba SBUS and Spektrum ,too

1 SBUS Servo Output.

SD Card Reader 


2 LED Output 

1 Buzzer Output 

On board telemetry module availabe at 433 / 868 mhz. (option) 

connector for external VR GPS + MAGNETOMETER

dimension 4x4 .

native support of APM Firmware : 

APM Copter 

APM Plane

APM Rover 

Custom firmware available for boat and Paramotor Drone.

I think that special new mode ad hybrid loiter and drift are very interesting for these great toys :) 

some example of micro drone developed by Tommyleo and AleBS



Some info and example are available on italian forum baronerosso :

This is the video doing by Bandit with a micro squid 

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This is a preview of VR Pad Station 2.0.1 enviroment that we use for develop VR Pad Station and check the  VRBrain APM Copter and Plane customization before to real flight .

Here you can found the procedure for join Google Group community  and download VR Pad Station for alfa testing  :

Here you can found info for install SITL on linux . In my test enviroment i use VMWare with Ubuntu linux and follow this instruction for configure enviroment on my PC :

After installation in ardupilot directory Tools/autotest 

you can found the file :

in mavproxy configuration : --master tcp: --sitl --out --out --out

you can change the ip adrress after --out with the ip of  your PAD with Port 14550 . On your pad and on mission planner you need to choose UDP connection to port 14550 normally is default .

For found your ip address on your PAD there are a lot of app on Play store that are usefull for  see what's your ip , keep atention if you use DHCP is possible that your ip change every time you connect to wireless network. 


This is the screenshot of new Pannel available on VR Pad Station 2.0.1 in this pannel you can connect to drone , receive the parameter and choose what application do you want to start or going inside configuration pannel . If you are not connected you cannot select the application .

The actual release online is only compatible with PAD in the next week we finish the layout also for smartphone and release it.


This is the screenshot of Ground Station app . On all the app is available on the top main information about status of the drone : Battery , GPS Fix , Mode of Flight .

On the top on the right you can found the button for choose the other app available . The app share same mavlink connection so you don't lost time when you change app.

On the left of the screen you can see main navigation info , in the middle of the screen you can found the main command available : 

Take off mode : It's a special guided mode we have implemented for take off your drone , we put the drone in guided at 5 meter and when you click take off after arm the drone the drone going in the sky. We test it at the field and it work fine , but at the moment is better to use these function only in simulation not in real world.

After you can activate guided mode and choose the point on the screen and the drone follow your command.

You can choose land or rtl when you want.


In this screen you can see the same information but inside artificial horizon , on the map you can see the wayoint you load to drone in last mission and a track with position where you start to fly and the actual position on the point where you guided your drone.


Here you can see on the left the Waypoint editor where you can add or delete waypoint manually or define automatic polygon  waypoint creation, upload and dowload waypoint on file or on the drone. 

If you decide to go in auto mode you can with auto button . In the middle there are the other button if you want you can retake control of your drone or in guided mode or by RTL or LAND.


This is the VR Radio APP integrated in VR Pad Station , this is a complete app where you control your drone as on your rc radio , you can choose to use PPMSUM output or MAVLINK protocol , if you choose mavlink protocol you can use the app for fly flight inside the SITL enviroment . If you configure Mission Planner or Lasernavigator 3D , you can see in realtime the position of your drone when you interact with virtual stick.

You can arm - disarm the drone , select stabilize and take control of your drone ... put it in loiter choose other app and start to enjoy with automatic functionality .

I'm enjoy a lot with this kind of configuration and i think that SITL is a great enviroment for guy of DevTeam . It's a valid solution for check if the app work fine before to go in the field for doing real flight.

It's a good solution for learn how your APM drone work , you can set different parameter by mission planner or Pad Station and see different reaction from your drone.

We are only in alfa stage but have a lot of idea to develop inside VR PAD Station , join us and give me your feedback so we can improve your  user experience .


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Bottom Layer on pc signal in indoor condition


10003964_10203677301477059_1820218844_n.jpg First prototype bottom layer


Signal in outdoor condition



Position of satellite.

VR GPS Ublox Lea 6H with HMC5983 Magnetometer


First Virtualrobotix GPS engine using Ublox LEA-6H receiver.

This is a 50-channel high sensitive engine that boasts a Time-To-First-Fix (TTFF) of less than 1 second.

Also provide a rechargeable backup battery to improve warm start.

The dedicated acquisition engine, with over 2 million correlators, is capable of massive parallel time/frequency space searches, enabling it to find satellites instantly.

Innovative design and technology suppresses interference sources and mitigates multipath effects, giving LEA-6H GPS receivers excellent navigation performance even in the most challenging environments.

Virtualrobotix GPS uses an high efficient low noise amplifier to improve antenna signal (19dB) and a SAW filter to select GPS frequencies (see graph below).


It also mounting an ultimate 3-axis digital compass, with selectable interface SPI or I2C (HMC5983).

This one is an high speed (220Hz output) and high resolution (2 milli-gauss) magnetometer.


Features and Specifications:

  • ublox LEA-6H module

  • 3,3V or 5V Inputs, with low noise 3.3V regulator.

  • 5 Hz update rate

  • Rechargeable 3V lithium backup battery for high efficient warm start

  • Panasonic Low Noise Amplifier for antenna signal with high gain (19dB)

  • EPCOS SAW high quality low-loss RF filter for GPS application

  • 25 x 25 x 4 mm ceramic patch antenna

  • Dedicated I2C EEPROM for receiver configuration storage

  • High resolution compass (2 milli-gauss) and high speed (2 milli-gauss)

  • Power and fix indicator LEDs

  • ArduPilot Mega compatible 6-pin JST connector

  • Exposed pads for simple soldering connection.

  • I2c / SPI HMC5983 magnetometer .
  • 2 ttl tx-rx ser connection.
  • 38 x 38 x 8.5 mm total size, 18 grams.


Some example from log collected in first test VRX GPS is red Line 3DR is blu







The module will be available in may , for more info or pre order contact us at


Origina blog post :

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