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286  Using Arduino / General Electronics / Re: Proper way of reattaching power cord in Ontario, Canada ? on: July 08, 2014, 03:01:41 pm
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splices should be done in an enclosed junction or receptacle box.
Must be accessible!
287  Using Arduino / Microcontrollers / Re: Arduino UNO as ISP doesn't work on: July 08, 2014, 12:56:03 pm
Maybe change the title of the post, add "It was my setup".
288  Using Arduino / Project Guidance / Re: big keypad on: July 08, 2014, 12:59:05 am
Meet my friend:
289  Using Arduino / Project Guidance / Re: big keypad on: July 08, 2014, 12:52:30 am
TLK3315 would lend itself to easier/better labelling.
.55 mm height. Hard to believe.
290  Using Arduino / Project Guidance / Re: big keypad on: July 07, 2014, 11:44:50 pm
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I like this one.

I think 256 is quite large.
291  Using Arduino / Project Guidance / Re: Attaching a plastic disc to a stepper motor shaft & type of plastic to use on: July 07, 2014, 11:00:42 pm
http://en.m.wikipedia.org/wiki/Coping_saw
292  Using Arduino / Project Guidance / Re: Attaching a plastic disc to a stepper motor shaft & type of plastic to use on: July 07, 2014, 05:29:47 pm
If you have access to a scrollsaw, you can do a good job if you set the speed to low.
293  Using Arduino / Microcontrollers / Re: Set pin13 (XTAL1) as output at 1284P and now can't program or write fuses on: July 07, 2014, 05:10:21 pm
Some set ups require a full swing oscillator . Set low fuse to 0xF7.

Also have you seen this?
Might want to try.   http://www.gammon.com.au/forum/?id=11637
294  Using Arduino / Project Guidance / Re: Attaching a plastic disc to a stepper motor shaft & type of plastic to use on: July 07, 2014, 02:29:44 pm
http://www.servocity.com/html/servo_to_shaft_couplers.html#.U7r1Bdq9KSM
295  Using Arduino / Project Guidance / Re: Attaching a plastic disc to a stepper motor shaft & type of plastic to use on: July 07, 2014, 02:20:56 pm
Attach one end of a shaft coupler to the motor shaft.
Insert a threaded rod (cut to length needed) into the other end of the shaft coupler.
Place your plastic circle over the threaded rod with  nut  and washer on either side of the circle.
Tighten nuts.

296  Using Arduino / Programming Questions / Re: Voltage measurement on: July 07, 2014, 12:35:43 am
Looks good
So an input to the voltage diver of 30V gives about 2.3V to the analog i/p.
This should give a reading of ~ 470

(470/79.2)*5=~ 29.7
297  Using Arduino / Programming Questions / Re: Voltage measurement on: July 06, 2014, 11:52:30 pm
1023*(1/(3.9+1))= 208.77.       3.9k and 1k

1023*(4.7/(4.7+56))=79.2.      56k and 4.7k

298  Using Arduino / General Electronics / Re: Why is IOH connector off grid ? on: July 06, 2014, 11:32:45 pm
I thought it was done that way to make it difficult to plug things in backwards.
Or maybe to make it difficult to make shields for their platform.
Or maybe it was a mistake.

Who knows?
299  Using Arduino / Programming Questions / Re: Voltage measurement on: July 06, 2014, 11:27:24 pm
resistorFactor = 1023.0 / (R2/(R1 + R2)); 
300  Using Arduino / Project Guidance / Re: big keypad on: July 06, 2014, 08:30:18 pm
Offer them in, "solder your own" kit form.
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