Recently in UAVP-NG Category

And again it's getting winter and I've not updated my blog for too long. ;)
Let's change that...

At last year's 28c3 Chaos Communication Congress the UAVP-NG developer team succeeded to get (our back then brand new hardware) HW-0.23-mini-r0 airborne.

The new hardware - designed by Volker and Ben, two of our NG developers - no longer contains analog sensor technology but instad uses modern 3D digital sensor chips. This gave enough room to include the GPS sensor on-board. We also designed a GPS antenna perfectly suited to be mounted on top of the flight control.

In spring 2012 the 7. UAVP-NG Developer Meeting took place in Heidelberg. It was a great event - we were very lucky with the weather - and lot's of folks showed up. We all had a lot of fun and had great 4 days. Thanks to Volker & Ben again for making that great location available to us!

After 28c3 Ralf, one of our NG developers, started designing the new NGblc-4mini-r0, a quad-BLC for small Mini-NGs. His first design was airborne in spring 2012. After testing serveral smaller design changes were done and a NGblc-4mini-r1 was produced and tested successfully.

Small changes in print and a footprint error resulted in a NGblc-4mini-r2 design which we will produce now and hope to have ready for the 29c3 congress at the end of this year.

Besides that we started testing the new HW-0.23-mini-r0 in spring 2012 and we had to find out that the combined gyro/accelerometer called MPU6000 has a shortcoming: It only contains one filter set for both, the gyro and the accelerometer. As both sensor have opposing filter requirements in our application, we concluded that it would be nicer to have an additional accelerometer.

In our new hardware design HW-0.24-mini-r0 which we designed over summer 2012 we include a secondary additional footprint for a second (optional) accelerometer. We choose the proven accelerometer we used in previous designs. Furthermore we added a antenna PCB allowing everyone to build flight control sized GPS antennas perfectly suited to be mounted on top of the flight control.

HW-0.24-mini-r0 got airborne some weeks ago. Except for small textual fixes which we will incoperate in HW-0.24-mini-r1 everything worked out fine! We hope to have HW-0.24-mini-r1 with us for 29c3.

As you can see the new HW-0.24-mini-r0 includes the flight control PCB, a GPS antenna PCB with the same size as the flight control, the Cam/RC controller PCB, an external compass PCB, a JTAG connector PCB and two push button PCB.

Besides all the above some of our developers took the time to design NGlight, a small I2C peripherial devices to the flight controll allowing control of 16 PWM LED channels for control of RGB leds. It allows you to control different colors of 5 RGB LEDs while choosing the color in a range of 0.255 for each of the 5x 3 RGB channels.

Last but not least I should mention our UAVP-NG assembly at the 29c3 Chaos Communication Congress 2012 in Hamburg. If you live near Hamburg feel free to visit us from 26.12.2012 to 30.12.2012 at the congress!

It's winter again and I did not update my blog for half a year. Evil me. Let's change this...

Let me start with this summer's CCC Camp, which was a great event and everybody who joined us in the UAVP-Village in Finowfurth had a lot of fun. If you head over here, then you will find some pictures of the event.

After the camp we had a nasty surprise, when we found out that our new hardware HW-0.22-mini-r2 of the Mini-NG had a non recoverable bug on the PCB. It was nobody's fault in special, we all should have take more care in checking the changes, which have been done. To make up to our users, who already got a revision 2 board, we replaced them for free with a HW-0.22-mini-r3 board, produced immediately after we found out about the bug.

The new HW-0.22-mini-r3 of the Mini-NG performs admirably and many of us are now flying these boards, which offer exactly the same features as the big HW-0.22 tower, except that it's only one board with 55x55mm.

In the meantime we also developed new features for NGOS. Having received my new ACT 2.4GHz Kit with Diversity on both sender and receiver side together with telemetry, we decided that it would be time to support the telemetry system from ACT (M-Bus) and Multiplex (M-Link). Both systems are essentially identical. The new NGOS supports up to 14 different on-board values to be transmited on the back channel to the sender. The user is free to define which of the 14 slots should transmit which on-board data. A ACT UDP or a Multiplex sender is able to show these slots on his display to the pilot. Documentation and configuration examples can be found here, in the extensive NGOS documentation.

Having completed my new Mini-NG with all sensors, including GPS and compass, I decided to give Position Hold, Coming Home and Waypoint flying a bit of priority.

Having already completed the new NGCTRL2 communication protocol in summer, I decided to give Qngctrl a update and visualize all the new navigation stuff using the new features of NGCTRL2.

NGCTRL2 is a framed packet based communication protocol, where each packet may contain an arbitrary amount of data-sets which in turn each contain a type and a payload. The packet content is encoded with the COBS (Constant Overhead Byte Stuffing) algorithm making sure we only use up 1 byte in 256 for byte stuffing (worst case) which in turn makes sure we can always detect our framing byte and also assures, that we may use all possible byte values inside the packet. The COBS encoded packet content then gets a XOR checksum and a framing byte at the end and is sent over the unsecured serial connection.

Each of the NGCTRL2 data-set packed into a packet contain a type value, describing the payload type and it's implicit length. libng, our PC client library for NGOS communication has a poll() API allowing client applications to easily receive and parse the NGCTRL2 packets. As each data-set contains a type field, a client can request arbitrary dump intervals for each data-set type. A NGOS is even able to send data-sets which were not even requested by a client, thus allowing NGOS to inform a client of events happening on the copter side.

I've implemented waypoint flying on the NGOS side by giving NGOS a new waypoint table, which describes the coordinates of the available waypoints. The table can be manipulated with the normal "show" and "set" commands in the NGOS shells. There is a new suite of shell commands starting which the keyword "nav", allowing the user to issue navigational commands like "nav position-hold" or "nav fly-waypoint-fdw". The amir-ng controller was changed to understands the concepts of target, waypoint and it's navigation algorithms were adapted to be able to fly with different behaviors. Each waypoint is defined by it's coordinates, a dwell time and a action and argument, which will allow for a lot of new cool features in the future. At the moment, we only know two actions called "reach, next" and "reach, dwell, next". More actions are to be expected.

On the client side I implemented a new GPS Map view, which visualizes all navigational information received from a NGOS and displays it's position, it's target, it's waypoints as well as all navigational data needed to calculate the curse, consisting of target deviation and target distance. A nice small navigational control shows the headings of the different target/waypoints/home positions and also shows the result of the navigation algorithm for debugging purposes.

This is the above mentioned GPS Map. At that moment it shows a NG flying in a simulated flight using real GPS data and currently doing waypoint flying forward with 5 waypoints currently heading towards the first of them:

As you can see the GUI not only shows multiple waypoints and targets but also many of the on-board states like the battery voltage and the controller flight state. These get transmitted to the client whenever they change. Altitude Height controls are missing yet and will be implemented soon.

In the meantime our hardware developers were busy too and they redesigned the Mini-NG in HW-0.23-mini-r0. The new prototype will use the MPU6050 3D acc and gyro sensors and features an on-board GPS. First prototypes have been built and we hope to bring some of them to 28C3.

Last but not least work on our next-generation hardware platform HW-0.30 has begun. It will feature 2 STM32 CPUs with single precision FPU running at 168MHz combined with a dual-port RAM for fast direct memory communication. We hope to port NGOS to the STM32 architecture during summer 2012 and so support multiple architectures within one source code.

Currently everybody is preparing and packing for the 28C3, this years Chaos Communication Congress in Berlin where we will participate as every year.

On the 28C3 we plan to work on the NGOS software for the upcoming HW-0.23-mini release. Also we plan to further develop HW-0.30. Everybody interested in our project is invited to visit us at 28C3.

Besides our new hardware revisions, some developers are currently working on new brushless-controllers, a controller for lights called NGlight and other fun projects. We're looking forward to discuss, improve upon and show prototypes of them on 28C3.

28C3, we're incoming... ;)

The time is near... The Chaos Communication Camp 2011 will start the 10th August and continue until the 14th August in Finowfurt near Berlin, Germany Europe, Earth, Milkyway!

Chaos Communication Camp 2011 Trailer from elektropunk on Vimeo.

The Chaos Communication Camp 2011 is an international, five-day open-air event for hackers and associated life-forms. It provides a relaxed atmosphere for free exchange of technical, social, and political ideas. The Camp has everything you need: power, internet, food and fun. Bring your tent and participate!

Make sure to join us in the UAVP-NG Village at the Chaos Communication Camp 2011 in Finowfurt!

Hi all!

As you probably know, neighter Taarek nor I ever flew anything before we found out about quadcopters. We were real noobs when we started with the stuff and trough having flown the old UAVP and the commercial MK we both never had a lot of pilot experience.

Switching to the UAVP-NG did not really help the issue. As a test pilot you are never sure if the fault was yours or if the software or hardware failed... ;)

Still after a while you get a bit of feeling for piloting and it seems that Taarek finally got the groove. Using a not so heavy NG probably helped too as we did this using our new Mini-NG, which you can see on the following picture:

Using the above Mini-NG it has suddenly become quite easy to fly pirouttes and I did a small movies of Taarek's first stunts. Flying NG is fun... ;)

UAVP-NG - The OS Multicopter: Taarek's first pirouettes from Amir Guindehi on Vimeo.

These are Taarek's first pirouttes flown with my brand new Mini-NG

Best regards!
- Amir

Hi all,

I would not let you miss the great photo Timo has shot showing the size differences between our normal size NG (HW-0.22) and the Mini-NG (HW-0.22-mini):

Cheers!
- Amir

Hello everybody!

Finally I found the time to update my blog! End of last month we had the 5. NG Developer Meeting in Heidelberg. Ben and Volker organized the event and it was a lot of fun! Peoples from all over Europe showed up and we had 3 days of BBQ, discussions and flying.

Now, a month later some of the movies shot have been cut and posted to the net. Below you find Robert's and my moving pictures of the event.

UAVP-NG - The OS Multicopter: 5. Developer Meeting in Heidelberg from Amir Guindehi on Vimeo.

This is a summary movie of the 5. NG Developer Meeting in Heidelberg, which took place the 27./28./29. May 2011

NG UAVP Meeting Heidelberg from Rob Robot on Vimeo.

Short Movie of the NG UAVP Meeting in Heidelberg Germany from 27 to 29th May 2011

I would like to thank all visitors and special thanks goes to Volker and Ben for organizing the great event!

Best regards!
- Amir

Hi guys,

Timo did some very nice shots of an fully assembled Mini-NG, which I could not let you miss:

Cheers!
- Amir

Hello everybody!

It has been a while since my last post, again. In the meantime we survived winter and had a lot of fun at the 27c3, the yearly CCC Congress in Berlin.

Spring is coming - and as every year, we need something new to play with... ;)

The new Mini-NG hardware has arrived!

Over winter time Volker redesigned our original HW-0.22 into a HW-0.22-mini. The new hardware is fully feature compatible to the old one, is running the normal NGOS and was shrunk to a size of 5.5cm x 5.5cm on 4 layers!

The RC-Controller was moved to a small separate PCB so that only folks needing additional DSL channels or servo channels will have to use it. The functions of the SB-Controller are provided by the LPC itself.

Here are the first shots of the PCBs...

Top side:

And bottom side:

Next, we will test the new PCBs and should everything work out, we will make them available in the NG Shop. Please note that the boards need to have a LISL acceleromenter directly soldered to the board. This means you need hot air to solder it by youself.

Our first Mini-NG prototype was airborne in december 2010 at the 27c3 congress!

A fully assembled HW-0.22-mini (this is our prototype which was airborne at 27c3) looks like this (courtesy of KeyOz):

Volker did a great job and the new Mini-NG looks nice and cute (at least for my humble eyes)!

We hope to be able to provide Mini-NGs with pre-soldered LISL and eventually even with pre-soldered LISL and ADXRS620 gyros in limited numbers in the NG Shop.

Check the NG Forum for Project News on that.

Cheers!
- Amir