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961  Using Arduino / Motors, Mechanics, and Power / Re: 28BYJ-48 5-Volt Stepper on: March 28, 2012, 01:19:07 pm
Yes, in my simple experiments.  Only 10 lines of code it is easy to follow.  I've been sidetracked by a few other projects hope to get back to this.  The whole point of Bresenham is to make a straight line while moving to arbitrary x,y.
962  Using Arduino / Motors, Mechanics, and Power / Re: two-wire control of unipolar stepper with ULN2003 on: March 28, 2012, 01:06:17 pm
My point is that you do not need to change the hardware from the stock ULN2003 to achieve 2000 steps/sec.
963  Using Arduino / Project Guidance / Re: Simple data logger for newbie on: March 27, 2012, 01:42:26 pm
It will log about 1000 events if you are not concerned with 1-second accuracy.
With an SD card millions.
964  Using Arduino / Motors, Mechanics, and Power / Re: New 28BYJ-48 library on: March 27, 2012, 01:37:47 pm
So far all we have is at the top of this post listing the functions and a brief description.  Some more documentation would be nice eh?  The easiest way is to dive right in.  To get started you only need to define which pins you have connected the motor IC to.  For many of the functions I provided, no setup or initialization is needed.  Just call them with the parameters they require.  One line of new code.  Experiment.  Try it.  It won't cause any harm until your motor gets very hot over an extended period.  There are many examples commented out in loop() in stepper2.pde.  Just un-comment one line at a time.  Ask me specific questions here or PM.  I'm willing to help anyone getting started.

Start by calling this function in your loop():
void degrpmEZ (boolean bcw, long deg100, int rpm100)
Does it work for you?
965  Using Arduino / Project Guidance / Re: Simple data logger for newbie on: March 27, 2012, 08:54:50 am
If you buy this for $10, I will write the Sketch for you to log switch changes:
http://www.ebay.com/itm/270921982348?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1439.l2649
966  Using Arduino / Project Guidance / Re: [SOLVED] Temperature trend calculation problem on: March 26, 2012, 09:41:42 am
It feels great to be helpful!
It's easier for everyone when the person who needs help listens like you did.
I wish everyone was so capable of listening to suggestions...
967  Using Arduino / Motors, Mechanics, and Power / Re: two-wire control of unipolar stepper with ULN2003 on: March 26, 2012, 09:37:11 am
I've gotten this code to work at 2000 steps/sec using 12v.
http://arduino.cc/forum/index.php/topic,89159.0.html
968  Using Arduino / Motors, Mechanics, and Power / Re: New 28BYJ-48 library on: March 26, 2012, 09:35:53 am
Can anyone suggest any improvements?  Additional functionality?
969  Using Arduino / Motors, Mechanics, and Power / Re: record data from potentiometer & playback to servo on: March 23, 2012, 10:22:50 am
My goal is to make canned predefined movements where the motion is already smoothed or eased on the PC before it is loaded unto Arduino.  There are many PC apps that do this.  I have written a Sketch to make the steppers/servos move.  It's the in between part that I'm struggling with.  How to export the data into an array for the Sketch to use.  So far Excel is my friend.  Looking for an improvement...
970  Using Arduino / Project Guidance / Re: Temperature trend calculation problem on: March 22, 2012, 08:34:11 pm
Are parentheses needed?

((currAvg <= 1.05 * prevAvg) && (currAvg >= 0.95 * prevAvg))

I would put them in for readability sake.
971  Using Arduino / Project Guidance / Re: Temperature trend calculation problem on: March 22, 2012, 06:06:21 pm
Your >= and <= are backwards in the middle If.
972  Using Arduino / Project Guidance / Re: Capturing jpeg from camera to sd card on: March 22, 2012, 06:03:28 pm
Yes, I've got the signal strength working much further than 500'.  But there is too much data from video to send via XBee.  Is there a faster RF modem?  Or a way to compress the data down to 10K/sec?  320x240 pixels?  Slower frame rate?
973  Using Arduino / Project Guidance / Re: Capturing jpeg from camera to sd card on: March 22, 2012, 05:12:12 pm
I've tried all this before.  I've used a cheap camera to store photos.  A DSLR to store them.  600' of Cat5.  2.4ghz analog transmitter.  Seems like the limit for sending video cheaply is 600'.  If I could convert the video signal to slow data, I could send it with XBee further.  Any ideas?  I've got it working for still images from DSLR.  Thumbnail sized.
974  Using Arduino / Motors, Mechanics, and Power / Re: record data from potentiometer & playback to servo on: March 21, 2012, 06:07:03 pm
@Soffer- Yes, but we have not determined which software to use for motion easing.  Is there one you like best?  Can it export these values to a text file?
975  Using Arduino / Motors, Mechanics, and Power / Re: record data from potentiometer & playback to servo on: March 19, 2012, 12:08:04 pm
I have a similar problem.  I'm trying to get the data from 3-D animation software into the Sketch to move the servos.  I have the output movement working, but the process of loading it is tedious.  Maybe I should try pots?  I want the movement to look natural like a human body moving. 
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