Status

Arduino SmartClock – Nano version

After having successfully created a SmartClock with Arduino, I decided to do it again but smaller !

As I want this project to be more colorful, I found an alternative to simple RGB led. The module is called WS2812 and it is simply awesome !

The modules are fairly easy to use and are connected on cascade. You can simply control the color of every LED separetely.

Description of the module : here

DSCN6808

One powerful WS2812

For now, I’m using the Arduino Uno for prototyping, but in order to have everything in a small box I’ll use the Arduino Nano Pro.

Here is what it looks like now :

 

Advertisements

DIY quadcopter – trying a manufactured controller

After a lot of problems and a lot of failed attempts with my DIY controller, I decided to buy one to understand what’s wrong (and also to make it fly !).

I decided to buy the Flip32 (AfroFlight NAze32) because it was based on Arduino (MultiWii) and it seems to have a lot of interesting features (magnetometer and barometer, battery monitoring , possibility to implement ultrasound sonar …).

It was also the occasion to discover a sensor that I’ve never used before the barometer. I know how it works in aviation (it is what is used to know our “altitude”). However I was astonished to see how precise it is ! It can detect variation of a couple of centimeters vertically only with atmospheric pressure.

For only 29€, I bought it in order to see if it could make my drone fly. Right now it is flying in gyro mode but the stability is not great ( so a card is not that much better than me :P). However with a card it is easier to have physical vibration damping which is the next step.

flip32

The controller mounted on my quadcopter

 

I’ll try to experiment a lot with this new card, but I’ve not given up the homemade controller.

More information :

French website on which I bought the controller

MultiWii : an open source project to make quadcopter and UAV fly with arduino

Naze32 user guide

Barometer on Wikipedia

Altimeter on Wikipedia

Calibration

In every French aiport, radio-equipements used by aircraft for instrumental approaches needs to be checked every year (and even more often in some cases).

One of the steps in the process is called in-flight calibration and is done by an ATR42 which is full of sensors (the kind of airplane where you should not use your phone ! 😛 ).

Here are some pictures in Cannes Mandelieu LFMD :

 

More information :

Localizer on Wikipedia

Flight Inspection Wikipedia (should be completed)