All Blog Posts (11,013)

ArduCopter Automatic PID Tuning - BRAVE TESTERS ONLY

DISCLAIMER: This could be dangerous and might crash your copter.

OK! I made some new changes to the autotuning algorithm and I have tested it again in the simulator. I think this is ready for some real world testing from some VERY BRAVE users, or some simulation testing. Unfortunately I do not own a quad and my octo is out of commission until Tuesday, or I would be testing this right now outside.



Added by Adam Rivera on January 20, 2012 at 7:30pm — 23 Comments

FPV in Maldives

FPV is the greatest way to discover places while you're on vacation. In the next few weeks and months TBS is going to present a couple of vacation videos ... here's the first from the Maldives, piloted by RiSCyD.

Added by trappy on January 20, 2012 at 4:56pm — 14 Comments

New colour night vision camera

If you have quite a wedge of loose change down the back of the sofa this might be a fun thing to purchase!

Those long evenings hiding in a tree now in colour!

The Tau CNV color and monochrome cameras deliver near starlight-level imaging and are designed for security, military EO systems, hyperspectral imaging, and traffic…


Added by Gary Mortimer on January 19, 2012 at 11:19pm — 5 Comments

ArduCopter PID Autotuning - FOR SIMULATION ONLY

Hello all,

First, THIS IS EXPERIMENTAL FOR SIMULATION ONLY. Video coming shortly of me using it in the simulator.

I have a functional first attempt at automatic P gain tuning. I'm calling it Pretty Good Gains (pun intended). There is definitely room for improvement, but here is how it works:

PID controllers usually end up with an output graph that looks something like this (from…


Added by Adam Rivera on January 19, 2012 at 10:13pm — 5 Comments

How Fast Can You Fly Without Crashing?

A professor at MIT developed an equation to determine the fastest theoretical air-speed for obstacle avoidance.

From Science Blog:  "Emilio Frazzoli, an associate professor of aeronautics and…


Added by Shannon Morrisey on January 19, 2012 at 9:43pm — 7 Comments

Ardustation Mega with Graphic LCD


I’d like to share my latest hardware ground control station. I call it the ArduStation Mega.

It retains all the features found on the DIYDrones Ardustation, as well as my…

Added by Colin on January 19, 2012 at 5:08pm — 146 Comments

Hobbies for Girls, Apparently!!

The new Blade mQX BNF Quad-Copter (BLH7580)

I typed in Quad Copters and girls and this is what came up.

What do you guys think of…

Added by Karla Jean Fripp on January 19, 2012 at 3:30pm — 55 Comments

Get your own balloon mapping kit


The same group ( which organized a citizen mapping of the BP oil spill is offering their DIY balloon-mapping kit as a reward in their Kickstarter campaign, which ends on January 30th. Having formed an DIY, open-source environmental science movement called Public…


Added by Jeffrey Warren on January 19, 2012 at 1:59pm — 8 Comments

OS61FX Hybrid Penta copter

Here is a good example of collaboration, an Hybrid MultiCopter.

Added by patrice.rance on January 19, 2012 at 9:14am — 11 Comments

XMEGA AP's and ESC's

This is my first blog here so just few words about me:  I’m an electronic engineer, I'm from Romania and my hobby is obvious.

By more than one year now, I spent lot of time working with Atmel XMEGA family. My first autopilot with XMEGA 128A1 had external 16bit ADC (ADS8344) because at that time, internal 12bit ADC and DMA were still unclear to me. MPX pressure sensors for air speed and altitude, HMC5843 compass, ADXRS610 gyros and LIS344 accelerometer.…


Added by Sergiu on January 19, 2012 at 9:13am — 8 Comments

JETPAX Quad frames.

Quad is made from a combo of fusion plastics and carbon fibre.

This is a parts and build video of the frame

i will be continuing to test this frame out crashing it dropping it and other crazy flying mishaps that happan when you fly quads.

this frame is only for the open source community

JETPAX want to give back to the open source developer with this great durable

Quad/Octo Frame…


Added by Rob. S on January 19, 2012 at 1:30am — 7 Comments

ArduCopter in Action - Flying an Helicopter in HIL mode

Here a video about the HIL tests of the firmware ArduCopter v2.2 b2xp2 (with JLN updates) with an Helicopter in H1 mode (Raptor 30 type) on the AeroSIM-RC simulator.

The tested features are:


- LOITER mode (GPS position Hold),

- RTL (Return To Launch),

- AUTO mode (GPS…


Added by Jean-Louis Naudin on January 19, 2012 at 1:17am — 12 Comments

Scarab Stealth Vs AR Drone

A fun video to watch.

Added by Hai Tran on January 19, 2012 at 12:18am — 7 Comments

ArduCopter: Changing from PI to PID to improve stability


I changed the attitude control loop a little bit to achieve more stability. Rate control with a PID(T1) instead of a PI controller. Here I present the necessary changes in the code to do this.


  1. Much more attitude stability
  2. Much faster response on disturbances or new setpoints


  1. You need to tune the control loop again after this change
  2. This change is experimental, it works for me but you do it on…

Added by Igor van Airde on January 18, 2012 at 1:36pm — 54 Comments

1st Octo Flight

I finally…


Added by Gareth Rens on January 18, 2012 at 12:00pm — 37 Comments

web censorship, SOPA/PIPA blackout, open-source and diydrones

Dear all,

DISCLAIMER: I hope I do not bend the forum rules too much by this blog post and would hate to offend the community by starting the discussion of a (at least marginally) political topic. However, since in the past also UAV regulatory developments and issues that relate to the…


Added by Andre S on January 18, 2012 at 8:09am — 22 Comments

Gizmodo is paying homage to DIYDrones

It would seem over time this little community is picking up in notoriety. This is awesome everyone and the growing numbers and increased projects and creativeness show what a truly unique community we have here at DIYDrones. Keep it up and I am sure that we will continue to gather more press. The link to the article can be found at:…


Added by Daniel NIkolov on January 18, 2012 at 12:30am — 3 Comments

Wiki Ninja
My APM 2.0 maiden with the MPX Fun Cub

ArduPilot Mega 2.0, the newest autopilot from 3D Robotics/ DIY Drones is mounted in my trusty Multiplex Fun Cub.

The code is 2.27 uploaded via the latest ArduPilot Mega Planner.

Tested were Manual, Stabilized and RTL (Return To Launch) modes. The Fun Cub's Surface Controls were twitchy because I did not put some expo on the ailerons and elevator.

On RTL mode, the Fun Cub was getting battered and shoved by winds on altitude, hence I cannot say if…


Added by Gent Armedo on January 18, 2012 at 12:00am — 2 Comments

ArduCopter: Use relay to flash LEDs if battery goes down (for AC 2.1)


I found this nice blog post, how to run LEDs with the relay switch. I modified the software to work with AC 2.1 firmware. And I added functionality that you can set the limits for the low battery warning with mavlink parameters.…


Added by Igor van Airde on January 17, 2012 at 10:52am — 1 Comment

It flies...

Hi there...

being a complete novice with autopilots and quadrocopters in general, I just got my stock 3DR kit completed and was able to fly.

Some observations that might help newcomers to get the stuff together:

  • If you think you have checked everything - do it…

Added by Michael Urban on January 17, 2012 at 9:30am — 7 Comments

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