Video – tips with WS2818b

Hello everyone,

as promised here is the video explaining how I soldered my LED’s to create the display in my worldmap clock project.

As stated in the video, the module used is Ws2818B which are individual RGB leds individually controllable .

I bought them by 100 on Banggood for about 15€

http://www.banggood.com/100Pcs-DC-5V-3MM-x-10MM-WS2812B-SMD-LED-Board-Built-in-IC-WS2812-p-979463.html?p=W016111637439201505V

I found a lot of useful tips on how to power it and use it properly on Adafruit’s website (which also the provider of the library to control it) Adafruit Uberguide for Neopixel

 

Aside

Wordmap clock

Inspired by some wordmaps made with nails found online, I decided to build my own with a little modification : it’s also a clock and of course a connected clock … I know what you are about to say, yet another connected clock ! And well … it’s true (first project, second project). But this one will be pretty !

IMG_8995

The “background” was made using painted 8mm thick MDF and the frame was made using fir wood.

LEDs are WS2818 which can be individually addressed in order to have results like this ! In this project there are 82 leds that needed to soldered (6 points per LED). It’s a lot of word, I’ll soon post a video explaining how I did it.

0001-0620

I will add more behind the “background” to light the wall on which it will be hanging. And I still have to work on the Wifi connection using ESP8266 module and Arduino.

 

Video

Steering wheel commands on my carputer

After a lot of work on my homemade carputer, I finally found out how to get the steering wheel commands on my carputer.
I made a video to explain how it works and how I did it :

I used and arduino with a Can Module to read the messages. In the video I explain how the Can Network is organised and how to get the message to know what is happening on the steering wheel commands.

Enjoy 🙂

Arduino SmartClock – Nano version, the result

Here is the final result on my nano version of the Arduino SmartClock

aDSCN7699

The new clock in font of its older brother

It is a simplified version of the Arduino SmartClock but also smaller.

Like the other model, it is an arduino based clock that connects to my home wifi in order to automatically set up the time (wifi module ESP8266).

It is also an alarm clock, the time of the alarm is also set via WiFi. There is a mode where the alarm is automatically set according to my schedule on Google Agenda and the time forecasted for the journey by Google Maps (by car, because of traffic jams and my variable schedule, this can vary a lot from one day to an other).

Instead of using a light sensor, I set up two simples modes : Day & Night. By day the seconds are shown in a colorful way :

aDSCN7693

Display by day

By night the luminosity is lower and only some LEDs are used :

aDSCN7695

Display in night mode

The code is fairly close to the one of the preceding version (reminder : the code of the clock itself is freely available here ). The soldering was more challenging as there not a lot of room available inside of the box.

aDSCN7703

Inside of the clock

To finish here is little tip :

If you’re building a project inside a box with a power cable (or any type of cable going outside of the box) you can make a knot with the wire inside. That way, if you pull on the cable, it will only tighten the knot and not unplug or break the wire ;-).

aDSCN7704

The simple knot trick !

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 :

 

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