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256  Using Arduino / Programming Questions / Re: Should be simple: What's wrong with my loop? on: August 16, 2014, 01:09:30 am
Why 2 loops???
257  Using Arduino / Project Guidance / Re: Wiring and interrupts on: August 16, 2014, 01:07:40 am
Not sure what you are doing but try this (use Rising interrupt)
258  Using Arduino / Programming Questions / Re: Should be simple: What's wrong with my loop? on: August 16, 2014, 01:00:59 am
These do the same thing.
j++
j = j + 1;
259  Using Arduino / Project Guidance / Re: Weird Problem on: August 16, 2014, 12:59:10 am
Quote
I use the arduino 5 volts to power the relay.
Don't.
260  Using Arduino / Project Guidance / Re: Wiring and interrupts on: August 16, 2014, 12:57:46 am
You are shorting 10, 11 and 2.
Is this what you want?
261  Using Arduino / Sensors / Re: Detecting a seed dropping through a plastic tube on: August 15, 2014, 11:39:15 pm
Optics would be the way to do this.
I would think that even a small seed would change the light intensity some what.
Feed this intensity change to a comparator to get 0V to 5V logic levels.
262  Using Arduino / Project Guidance / Re: 6' Groundwater Level Meter on: August 15, 2014, 10:59:29 pm
For out doors use, you might want to confirm things will work consistently with the humidity and temperature extremes.
263  Using Arduino / General Electronics / Re: Connecting the Arduino to my circuits. on: August 15, 2014, 07:26:31 pm
Breadboard
http://www.ladyada.net/learn/arduino/lesson3.html
264  Using Arduino / General Electronics / Re: Bread Boards & wishful thinking? on: August 15, 2014, 01:48:14 pm
Keeps your circuits neat and handy:
http://forum.arduino.cc/index.php?topic=259819.0

Breadboard development boards have lots of nice I/O ready to use.

Power supplies.
https://solarbotics.com/product/34020/

I like the 1284Weeney made by Crossroads for breadboard work.

Voltage and current monitoring on the rails.
265  Using Arduino / LEDs and Multiplexing / Re: Eight digit, 7-segment counter with MAX 7219 on: August 15, 2014, 12:30:33 am
Ask in:
 Arduino Forum :: Community :: Gigs and Collaborations
266  Using Arduino / Project Guidance / Re: Drink Mixer (precise liquid dispensing) on: August 15, 2014, 12:27:28 am
See:
http://www.adafruit.com/blog/2012/12/19/new-product-peristaltic-liquid-pump-with-silicone-tubing/
267  Using Arduino / Programming Questions / Re: millis rollover on: August 15, 2014, 12:22:48 am
See:
http://www.gammon.com.au/forum/?id=12127
268  Using Arduino / Project Guidance / Re: Reading rx input using interrupts on: August 14, 2014, 08:14:51 pm
I suggest you look here for a great review:
http://www.gammon.com.au/forum/?id=11488

D2 is interrupt 0 which would be set to a rising edge.

All you have to do is read input D8, 9, 10, 11 if they are High then they caused the interrupt. Note make sure you check them all as two interrupts or more could come in at the same time.
269  Using Arduino / Project Guidance / Re: Reading rx input using interrupts on: August 14, 2014, 07:26:20 pm
Inputs 1-4 go to their usual inputs on the Arduino.
Whenever they go HIGH that HIGH is seen on D2 of the Arduino causing an interrupt.
The ISR looks at D8-D11 to see who is HIGH.
270  Using Arduino / General Electronics / Re: Guides for soldering? on: August 14, 2014, 12:58:24 pm
Quote
Is there no way of having a faq or sticky for this, i does seem to be a fairly common question.
Send a request to the moderator.

I always look at YouTube and Google though.
The search function here is good.

See also:
https://learn.adafruit.com/adafruit-guide-excellent-soldering?view=all
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