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Tersus GNSS Easy Kits

Tersus GNSS Easy Kits

We have BX306 GNSS Kits and BX316 GNSS Kits (with heading function) for customers. 

1. The BX306 is a cost-efficient GNSS RTK board for cm-level positioning and providing accurate raw measurement output, which can be integrated with autopilots and inertial navigation units. The BX306 board supports three constellations (GPS L1/L2, GLONASS L1/L2, and BeiDou B1/B2) to improve the continuity and reliability of the RTK solution even in harsh environments. In-built 4GB memory supports data collection. It features compatibility with other GNSS boards in the market via flexible interfaces, smart hardware design, and commonly used log/command formats.

2. The BX316 is a GNSS RTK board for providing accurate positioning and heading information. It supports multi-constellation (GPS L1/L2, GLONASS L1/L2, and BeiDou B1/B2) signals and can output continuous and reliable RTK position and headings, even in harsh environments. The BX316 commands and logging are compatible with NovAtel protocols. Ethernet, USB, LVTTL, RS232, CAN, PPS, and event mark are supported. In-built 4GB memory supports data collection. The BX316 offers real-time, cost-efficient, and cm-level positioning as well as flexible interfaces for a variety of applications, such as precision navigation, precision agriculture, surveying, and UAVs.

Please let me know if you need more information. You can also send me email: yunxia.hu@tersus-gnss.com. Thanks.

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Pix4DMapper + Aeromapper Talon fixed wing BVLOS system for less than $16K USD

Aeromao Inc., celebrates its 4th year as an official partner of Pix4D offering the Pix4DMapper Aeromao edition and Pix4D related products.

The Pix4DMapper Aeromao Edition is a fully featured image processing software package bundled with an Aeromapper UAV system, that includes two perpetual licenses of the worldwide leader in photogrammetry software.


This bundle offers the additional advantage of resulting in a more affordable package than if either system is purchased separately. For example, the Aeromapper Talon (the flagship UAV system of Aeromao) is sold for less than $16,000 USD, including Pix4DMapper Aeromao edition. The Aeromapper Talon is a fixed-wing commercial turnkey UAV system for large area mapping, BVLOS (Beyond Visual Line of Sight) operations and optional PPK (post-processed kinematic) for survey-grade results, including a wide range of optional swappable sensors (thermal, multispectral and even surveillance camera packages).

However, these prices could be impacted after January 1st, 2019 due to policy changes.


Aeromao Inc,. additionally offers stand alone licenses, educational packages or volume discounts in a quick turnaround time.

Aeromao is also an official partner & reseller of Agisoft Photoscan since 2013 and all its related products.


About Aeromao Inc.

Is the Canadian leading UAV manufacturer, developer of the Aeromapper series of turnkey unmanned aerial vehicles for mapping, surveying, precision agriculture and remote sensing.

With exports to more than 45 countries since 2012, Aeromao Inc. offers a line of products that adapt very quickly to market demands and to unique client’s applications, where no other UAV manufacturer goes. The Aeromappers have been used by corporations, research organizations, universities and government agencies around the globe for a great variety of applications.

Aeromao extends its range of services to payload customizations, data acquisition services globally, flight training and operational support to its clients.   Find out more at www.aeromao.com

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Tersus RTK/PPK OEM Board

Tersus RTK/PPK OEM Board

1. BX306 RTK BOARD Supports GPS L1/L2, GLONASS L1/L2, and BeiDou B1/B2.Supports in-built 4GB memory, which makes data collection easy.Up to 20Hz RTK solution and raw data output.Supports 384 channels.Pin-to-pin compatible with NovAtel OEM615.Log/command compatible with NovAtel protocol.Supports event mark and PPS.

2. BX306Z RTK BOARD Supports GPS L1/L2, GLONASS L1/L2, and BeiDou B1/B2.Supports in-built 4GB memory.Supports up to 20Hz RTK solution updates and raw data output.Supports 384 channels.Pin-to-pin compatible with Trimble BD970.Log/command compatible with NovAtel protocol.Supports PPS output and event mark input

3. BX316 RTK BOARD Supports RTK positioning mode or RTK positioning + heading mode.The two modes are software configurable.Command compatible with NovAtel protocol.Supports 20Hz RTK solution updates and raw data outputs.Supports 384 channels.Supports in-built 4GB memory, which makes data collection easy.Supports PPS output and event mark input.

Supports measurements output (GPS L1/L2, GLONASS L1/L2, BeiDou B1/B2 from primary antenna.GPS L1/GLONASS L2 or GPS L1/BeiDou B2 from secondary antenna).Supports 384 channels.Supports in-built 4GB memory, which makes data collection easy.High integration System-on-a-Chip (SoC) solution.Supports PPS output and event mark input.Serial ports with LVTTL or RS232.External antenna inputs through SMA connectors.

5. BX316D RTK BOARD Supports RTK positioning mode or RTK positioning + heading mode, with software configurable modes.Up to 20Hz RTK solution updates and raw data output.Supports 384 channels.Pin-to-pin compatible with Novatel OEM617D.Log/command compatible with NovAtel protocol.Supports PPS output and event mark input.Supports in-built 4GB memory, which makes data collection easy.
Please check our website for more details: https://www.tersus-gnss.com/product/gnss-oem-boards. Thank you. 

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Some UAV projects from Dronlab

The Laboratory of Unmanned aerial vehicles (Labdron) located in the Engineering School of Extremadura University (Badajoz, Spain) have started novel activities to introduce our engineering students in the UAV environment.

We have prepared courses to explain how to program UAVs and we have planned some seminars to introduce students in different technologies, such as UAV simulators, raspberry pi/arduino integration, UAV sensors, communication mechanisms and so on.

We have just finished several interesting projects:

  • The first one is focused on controlling one quadcopter (pixhawk) using a robotic glove. This device is integrated different types of sensors to detect finger movement, and also hand position and its acceleration. This glove has also a wireless connection to send mavlink commands to the quadcopter in order to move it as desired. You can see a demonstration presentation here1,

  • The second provides a system to control UAVs using only the voice. The project is also focused on quadcopters (pixhawk) although it can be used with any other type of UAVs. A smartphone receives the voice, then it identifies the specific command through artificial intelligent, next a corresponding mavlink command is generated, and finally, the package is send to the UAV. You can see a demonstration video here.

  • The third one tries to detect obstacles using ultrasonic sensors controlled by an arduino device. Sensors send an a specific sound which bounces in an object. When this sound is detected by the sensors, arduino device estimates de distance of objects. At this point, if there is any object in its vicinity, Arduino sends a command to stop or even to move in the opposite direction. You can see a demonstration video here.

I hope you enjoy this projects.

Jose Luis Herrero

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Tdrone—-Open source coaxial drone!

In recent years, multi-rotor aerodynamic aircraft have been widely used in consumer UAVs and some special industries. Mention of hovering aircraft, the first thing we have in mind is multi-rotor, which ignoring the potential of other hovering aerodynamic configurations. There is no denying the fact that multi-rotor occupied most of the market share, while UAVs should not only has one form. It is necessary that a flexible choice of pneumatic layout for different applications and scenarios.         

In this context, we have developed a coaxial two-propeller UAV Tdrone. This article provides a complete information and an open source solution to share this. I hope you are interested in  this kind of aircraft,even make one by yourself!

Why Coaxial drone

he flight principle of coaxial twin-propeller aerodynamic configuration aircraft is similar to that of our common helicopter. Unlike helicopters, the coaxial twin-propeller aerodynamic configuration cancels the common tail rotor on helicopters and uses two propellers with the same diameter and coaxial arrangement. Like helicopters, swashplate are used as pitch-changing mechanisms to control the pitch and roll degrees of freedom of aircraft. The following video describes how the swashplate  works:


For a small coaxial twin-propeller aerodynamic configuration, a single-layer pitch-changeable structure is usually adopted, that is to say, only one rotor can be pitched in the upper and lower layers, while the other is fixed-pitch. The advantage of this layout is to simplify the mechanical structure to the greatest extent, which is conducive to the manufacture and later maintenance of aircraft. Of course, if we pursue better performance, we can also design more complex double-layer variable-pitch structure to achieve better flight performance.

The advantages of coaxial twin-propeller over multi-rotor aircraft are as follows:

1. Coaxial twin-propeller aircraft has larger rotor area and higher flight efficiency under the same working size (in flight).

2. The coaxial twin-propeller vehicle has larger payload under the same working size (in flight).

3. Under the same payload, the rotor speed is lower than that of multi-rotor, which results in less noise and better silence.

4. When generating pitch and roll control moments, the main rotor does not need to be accelerated or decelerated frequently, which reduces the energy loss. Especially in the case of large aircraft size, this advantage over multi-rotor will be more obvious.

5. The propeller can be folded and accepted conveniently without the complicated folding and locking mechanism of the multi-rotor aircraft arm. The folded fuselage is more regular and easy to carry and transport.

The disadvantages of coaxial twin-propeller compared with multi-rotor aircraft are as follows:

1. Comparing with multi-rotor aircraft, the mechanical structure of coaxial twin-propeller aircraft is relatively complex, resulting in lower manufacturing cost and maintainability than multi-rotor aircraft.

2. Flight mode is more complex than multi-rotor, which has some challenges in flight control design.

Any aircraft is designed for target use and use environment. There is no absolute difference between different aerodynamic layouts. Not only on Earth, but on other planets our theory still holds true


more than 100 years after the Wright brothers completed their first manned flight using fixed-wing aircraft, we are hopeful to witness the first use of UAVs on planets other than Earth, which is a coaxial drone!


The Tdrone UAV was developed in October 2015, and by April 2016 the first generation of Tdrone had initial flight capabilities, as shown in the video. Tdrone uses two modified 1806 brushless motors as power, two steering motors to control the swashplate and differential control for yaw. Flight control uses CC3D flight control. It is equipped with a two-axis stable platform and a motion camera. The duration is about 10 minutes.

Manufacturing methods and materials:

Tdrone is manufactured by 3D printing technology. All parts are optimized for 3D printing, which can be printed directly. The printing materials are made of ordinary ABS plastics. Aluminum tubes are used in the central core. 98% of the parts are fixed by screw, which is convenient for later maintenance and replacement.

See the Open Source page for details:


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