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241  Using Arduino / Project Guidance / Re: How to Switch Between two different Lights? on: May 13, 2014, 10:20:21 pm
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The Power Switch Tail was made for housewives and old people or busy or lazy people
OR
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Hi im Relatively new at the whole Arduino thing so i was wondering if i could do this..smiley
242  Using Arduino / Project Guidance / Re: How to Switch Between two different Lights? on: May 13, 2014, 10:03:17 pm
You could get two of these:
http://www.adafruit.com/products/268
243  Using Arduino / Microcontrollers / Re: Expected signature for ATMEGA328P is 1E 95 0F on: May 13, 2014, 09:55:09 pm
 smiley-eek
244  Using Arduino / Project Guidance / Re: Turning my lights off on: May 13, 2014, 08:37:26 pm
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Do i have to adjust the clock manually
That's what I do.
245  Using Arduino / General Electronics / Re: Questions on projects 02 on: May 11, 2014, 04:38:21 pm
Thank you to @Crossroads :
"The limit is 200 mA Absolute Maximum per VCC & Gnd pin, then the current limit per port and per pin.

'328P in a DIP package has 1 VCC pin, thus 200mA limit.
'328P in a surface mount package, thus a 400mA limit.
The Notes in Section 29 show the limits per port, totalling 300mA:

ATmega48A/PA/88A/PA/168A/PA/328/P [DATASHEET] 304
8271G–AVR–02/2013
Notes: 1. “Max” means the highest value where the pin is guaranteed to be read as low
2. “Min.” means the lowest value where the pin is guaranteed to be read as high
3. Although each I/O port can source more than the test conditions (20mA at VCC = 5V, 10mA at VCC = 3V) under steady stateconditions (non-transient), the following must be observed:

ATmega48A/PA/88A/PA/168A/PA/328/P:
1] The sum of all IOH, for ports C0 - C5, D0- D4, ADC7, RESET should not exceed 150mA.
2] The sum of all IOH, for ports B0 - B5, D5 - D7, ADC6, XTAL1, XTAL2 should not exceed 150mA.
If IIOH exceeds the test condition, VOH may exceed the related specification. Pins are not guaranteed to source currgeater than the listed test condition.
4. Although each I/O port can sink more than the test conditions (20mA at VCC = 5V, 10mA at VCC = 3V)under steady state conditions (non-transient), the following must be observed:

ATmega48A/PA/88A/PA/168A/PA/328/P:
1] The sum of all IOL, for ports C0 - C5, ADC7, ADC6 should not exceed 100mA.
2] The sum of all IOL, for ports B0 - B5, D5 - D7, XTAL1, XTAL2 should not exceed 100mA.
3] The sum of all IOL, for ports D0 - D4, RESET should not exceed 100mA."
If IOL exceeds the test condition, VOL may exceed the related specification. Pins are not guaranteed to sink current greater
than the listed test condition.hl
246  Using Arduino / Project Guidance / Re: Detecting a stepper motor position after a power cut / setting a home position? on: May 10, 2014, 12:14:43 pm
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Another way I suppose I could do this is have the stepper motors return to their "home" positions on startup and then move it forward to the correct time.
This is the way to do it.
May be have your home position at 12, i.e. one limit switch per hand.
247  Using Arduino / Programming Questions / Re: Problem with Arduino LCD on: May 09, 2014, 08:02:48 pm
Yes
http://forum.arduino.cc/index.php?topic=97455.0
248  Using Arduino / General Electronics / Re: Powering my arduino uno from car battery on: May 07, 2014, 07:41:06 pm
You want to go from 12 to 5 so buy a step down converter.

I've used HERE
249  Using Arduino / General Electronics / Toggle Power Switch Circuit on: May 07, 2014, 01:46:45 pm
Came across this circuit, thought others may be interested in it for DIY designs.
FYI
https://www.youtube.com/watch?v=Foc9R0dC2iI&feature=em-subs_digest-vrecs
250  Using Arduino / Programming Questions / Re: Arduino Barcode Scanning on: May 05, 2014, 05:15:33 pm
Making multiple posts one the same topic makes people upset and wastes time.
251  Using Arduino / General Electronics / Re: DIY cases for you next project on: May 05, 2014, 02:04:01 pm
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where they'd drilled out a pocket
That's a good idea.
You could cut the center out then screw/glue on the top and bottom.

You would be able to create some interesting shapes too.


Edit: this is also an interesting way to make a box:
https://www.youtube.com/watch?v=OiETlYskTrY&list=PL675D09BBDEA50DAB
252  Using Arduino / General Electronics / Re: DIY cases for you next project on: May 05, 2014, 01:48:58 pm
Page 2
253  Using Arduino / General Electronics / DIY cases for you next project on: May 05, 2014, 01:47:51 pm
This may be of some interest to those who have some woodwork skills.
254  Using Arduino / General Electronics / Re: What are good Mosfets to use with an arduino?? on: May 03, 2014, 11:57:04 pm
Lots of good reading here:
Click on Advanced Search in the top right hand corner of the screen.
Search for     MOS FET
255  Using Arduino / Microcontrollers / Re: Updating the mighty-1284p core on: May 01, 2014, 08:32:12 pm
@Coding Badly
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# Full Swing Oscillator; Start-up time: 16K CK + 65 ms; Crystal Osc.; slowly rising power; [CKSEL=0111 SUT=11]
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bobuino.bootloader.low_fuses=0xF7
You helped me out of a previous situation where I experienced 1284 problems on a bread application.
THANK YOU!
Others have not see the problem probably do to a different circuit layout, ground plane etc.
This points to my following conclusion, if several people have seen the problem and others not, there must be something borderline or on the verge of not working.
Since a slight change in layout fixes the problem, we are playing with a situation which can/could raise it's ugly head as a bug or intermittent.
I for one will always use full swing (at a small cost of power) as it totally solves the problem, besides I have enough problems laying in wait.
Thank you Coding Badly and Crossroads!
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