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46  Topics / Robotics / Re: SOLVED: Devantech SD21 servo contr. and desperate programmer, after one year... on: October 23, 2012, 11:07:30 pm
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
47  Using Arduino / General Electronics / Re: Rfid Door Lock on: October 23, 2012, 03:41:43 am
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
48  Using Arduino / General Electronics / Re: Serial hangs after digitalWrite() on: October 23, 2012, 02:33:16 am
Enough power,  and right way to power up your devices?

Cheers,
Kari
49  Using Arduino / General Electronics / Re: Rfid Door Lock on: October 23, 2012, 02:06:25 am
Have you tried http://www.eBay.com ?

What transistor are you looking for?


Cheers,
Kari
50  Using Arduino / General Electronics / Re: Rfid Door Lock on: October 23, 2012, 01:49:35 am
Are you asking for a schematic or photo? And you must be talking to Nick, right?

Cheers,
Kari
51  Using Arduino / General Electronics / Re: Rfid Door Lock on: October 23, 2012, 01:36:26 am
can you please take some more photos

Thanks

Photos of... what?

Do you know what spoonfeeding is?
http://www.thefreedictionary.com/spoonfeed

Look for  number 2.

Did you get it?
 smiley-wink

Cheers,
Kari
52  Topics / Robotics / Re: SOLVED: Devantech SD21 servo contr. and desperate programmer, after one year... on: October 23, 2012, 01:01:49 am
Just this solved an issue for me too, thanks.

Weel, that is great! What exactly was your problem?
We've had so many brain farts so far, I can't even remember all stupid mistakes found and corrected, by try and learn method.

Cheers,
Kari
53  Using Arduino / Motors, Mechanics, and Power / Re: Motor power on Romeo on: October 22, 2012, 05:37:02 am
Romeo is Arduino compatible, made by DFRobot.

Show the complete code YOU are using, not the link to the product page.

Do you have jumpers installed?


Cheers,
Kari
54  Using Arduino / General Electronics / Re: Rfid Door Lock on: October 22, 2012, 04:28:53 am
how do i ground to the board


Are you sure you want to do this?

Cheers,
Kari
55  Using Arduino / Project Guidance / Re: pwm ? on: October 22, 2012, 12:46:18 am
How about if you format your post again. I can't understand the question, or if there's more than one.

Use periods too, so we know where sentence stops, and new begins.

Cheers,
Kari
56  Using Arduino / General Electronics / Re: Rfid Door Lock on: October 21, 2012, 11:49:51 pm
My door lock uses 24V.
Thanks for asking.

Cheers,
Kari
57  Topics / Device Hacking / Re: EEPROM SDA SCL reading on: October 21, 2012, 03:33:45 am
http://arduino.cc/playground/Main/InterfacingWithHardware

Goto  I2C EEPROM

Cheers,
Kari
58  Topics / Robotics / Re: RGB565 and yuv422 data from text file to image display on: October 20, 2012, 02:44:06 am
It would be really nice to know more about this, my robot could use that feature for precise movement control!


Cheers,
Kari
59  Using Arduino / Motors, Mechanics, and Power / Re: using L298 to control Dc motor (basic) on: October 17, 2012, 05:57:46 am
You should show the actual schematic you are using, or a link if you have  a shield.

Cheers,
Kari
60  Using Arduino / Programming Questions / Re: Romeo board and LCD pin assignmet conflict? on: October 16, 2012, 10:31:56 am
bobsmithimages,

Did you read my post, and did you find the point I was trying to show?
It is possible that I explained it a bit messy way, but it should work. All you need to do is to change pin assignments on your code.
Works for me, should works for you as well.

I like Romeo, it includes many nice features for a start, as the first board, it just takes time to get use to its hardwired parts.

Cheers,
Kari
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