We are using PS/2 mouse to measure wheel rotation, and I don't see why typical USB-mouse wouldn't do that as well.

So, it's time to se the code....?

Cheers,
Kari

Interesting forum choice for the question like this... Your teacher don't read this?
 

Cheers,
Kari

Well, what do you think that would be a good start?

You will get help with your code problems (that has something to do with arduino)
once you have started your project, before that, learn the first steps.
There are good examples waiting within the IDE.

Cheers,
Kari

Do you know how to program with C-language?

Cheers,
Kari

Our project is not that heavy duty, we are trying to maximize the 12V 2500mAH battery life by cutting the power from motors and servos when they are not needed. Silent and bright, LED's are blinking and NRF24L01 is powered all the time.

If ever I start project with unlimited power supply, that BEC is on the list.

Cheers,
Kari

You should consider using gears to get more precice accuracy and to increase torque.

What is the main optics you are going to use, telescope or something short like camera objectives?

Cheers,
Kari

Could you explain this one more time...? You are taking a photo of an old style teplephone dialing circle? And then... what?

Cheers,
Kari

Very valuable information! Thanks!

Cheers,
Kari

It's a troll...

Cheers,
Kari

Components are named, which one is the problem? R1 could be missing something, maybe author would check the correct value. Or it could be just 10.

Bobby,
Be more specific with your questions.

Cheers,
Kari

We tested it with single servo only, and the position didn't change with less power consumption. We have probably 5 kind of different servos at this moment used, quite cheap models all.

When our big picture is ready, we start to check the problem, now our hands are full with combining  all four arduinos to work with each other.

I promise to tell if any progress happens with SD21.

Cheers,
Kari

Ok!
Have you been playing with SD21 a lot? We seem to have some problems with getting
absolute positions for servos, one day middle position is not where it was yesterday.

We have to recalibrate some servos every now and then to get them where they belong
at the start, to get safe combination for the joints of the robots arms. One thing that
is still to do, is the change of the source voltage.

If you experience any similar symptoms, it would great if you tell us about that.
I don't know how widely this board is used, but it's quite hard to believe that the problem
lies in it.

Cheers,
Kari

which website are you on and which data sheet

Pick one.
http://search.datasheetcatalog.net/key/IRLZ34N

Philips has the easiest for you...

Cheers,
Kari

Enough power,  and right way to power up your devices?

Cheers,
Kari

Have you tried http://www.eBay.com ?

What transistor are you looking for?


Cheers,
Kari