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Project Guidance / Re: Head motion detector?
Last post by MorganS - Today at 09:44 pm
TrackIR does this with a camera-based system. It requires reflectors worn on your hat for the best results. I'm sure their API is published somewhere so you could have one of these plugged into your PC and get the data.

Does the Microsoft Kinect have head orientation as one of its outputs? I've never used one.

The Pixy camera is very easy to integrate with Arduino and it may be able to do some of this image processing, although its primary utility is "find the yellow square" and not orientation.
I need help with my programming I am trying to write a switch case command. I have my two variables as 0 and 1. i need each branch to execute an action when it recieves these messages. I am having issues with it telling the difference and trying to initalize the variables. Can anybody help me please?

Code: [Select]
  case 0:;
     int value = 0;
      lcd.setCursor(0, 1);
case 1 :
    int value = 1;
      lcd.setCursor(0, 1);
      lcd.print("Hi! :)");
General Electronics / Re: Li-ion batteries
Last post by DrAzzy - Today at 09:43 pm
I use 18650's a lot in my projects too.

Be aware that - any 18650 cell spec'ed for more than 3000mAh is lying about their capacity. Cheap 18650's have 500mAh to 2000mAh capacity, typically. Some of them are absolutely terrible (the yellow ones claiming 9000-someodd are particularly bad, as you can tell when you pick them up), but the better of the knockoffs are usable. Of course, some care should be taken that you don't have kindling piled around them while charging.

If I'm charging them in place, I strongly favor wiring in parallel, since it makes charging easier (there are lots of single-chip solutions for charging single cells without making a big production out of it. That's less true of series stacks. You can run an AVR microcontroller right off the output of the battery (at less than 16mhz to keep completely within spec - I do 8mhz, using an appropriate crystal - the internal oscillator isn't accurate enough for serial), which makes life easier.

Can't wait until those flexible ceramic batteries that you can drive a nail through during operation without adverse effect become cheap enough to use. There's a lovely video from the company of them cutting the battery into pieces with scissors (it's thin and flat), driving nails through it, and blowtorching it.
Français / Re: Relier un clavier USB (pav...
Last post by Artouste - Today at 09:42 pm
sur quel "arduino" exactement ?
General Discussion / Re: Who is AWOL really and wha...
Last post by Robin2 - Today at 09:42 pm
And count me in the "would rather have AWOL" camp.
Me too.

Deutsch / Re: Noch eine Terrariensteueru...
Last post by Whandall - Today at 09:41 pm
Jetzt versorgst du den Arduino über USB?

Ich bin kein Freund von Fritzing, in deinem letzten Bild müsste ich jetzt die Widerstände aus den Farben dekodieren,
das finde ich lästig -> wird also schon stimmen.

Der ESP-01 ist sehr Breadboard unfreundlich, hast du den gesockelt?

Ich habe zum Testen so einen nRF24L01+ Aufbau (Sockel mit angelöteten männlichen Verbindungskabeln).
Software / Re: Caricare un file da micros...
Last post by SukkoPera - Today at 09:40 pm
Yep, chiama il file "index.html" per convenzione.

Probabilmente qualche foto riuscirai anche a metterla, il problema è che Arduino non è esattamente una scheggia, e fare da webserver non è banale quando inizi a ricevere un certo numero di connessioni.
Le bar / Re: Conseil: besoin d'aide pou...
Last post by Jambe - Today at 09:40 pm
Tu va chercher un peu loin avec arduino pour transcrire ce que tu veux faire.

Surtout que pour créer des contacts secs tu peux pas le faire directement avec arduino, il va falloir interfacer avec des relais ou du mosfet. Sans parler des interférences générée par ton poste à souder.

Peut être une solution à base d'AOP, les pros devrait t'apporter des éléments de réponse.

Project Guidance / Re: MPU6050 Stability
Last post by MorganS - Today at 09:40 pm
What do you know about Quaternions? You need some fairly advanced maths to get this kind of stabiliser or "gimbal" to work.

Fortunately some better mathematicians than I have put together libraries and working Arduino programs. Some of it is even published on the internet. Use their code and ideas to make your own project great.
Project Guidance / Re: Head motion detector?
Last post by Ralph_S_Bacon - Today at 09:40 pm
I do not want to make a device for someone to wear.
This was going to be a real challenge anyway but with this constraint I would say pretty much impossible.

The issue is that the Arduino does not have the processing power of your iPhone or digital camera, so it will not be able to inspect real time video for eyes or anything else that might be associated with a human head.

And it's not just about movement is it? It's about orientation of the head, that is, it is now facing left, straight or right? Your camera can detect eyes, smiles and so on but I'm pretty sure the Arduino would not stand a chance, not even one of the more powerful ones such as a Due.

How were you envisioning this to work?
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