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1  Development / Other Software Development / Re: Programming for newbies? on: August 19, 2014, 01:20:23 pm
there is also a BASIC for atmel processors, check the ELEKTOR magazine, they promote it on a regular basis.
2  Using Arduino / Project Guidance / Re: Use FHT library with Gemma on: August 19, 2014, 01:18:57 pm
who is Gemma?
3  Development / Other Hardware Development / Re: IS ARDUINO IDE SUPPORT SPANSION FM4 ARM PROCESSOR on: August 19, 2014, 01:18:38 pm
but the Arduino does support smal character (NOT JUST CAPITALS smiley-wink
4  Topics / Device Hacking / Re: New To Arduino . Can I make a laser trip line print? on: August 19, 2014, 01:16:27 pm
yes is probably possible.

if you provide more information the answer will be more exact smiley-wink

- what laser do you use- datasheet
- what printer do you have in mind - datasheet
- sensors you think you need
- how much text do you want to print (memory is limited)
- ...

5  Topics / Science and Measurement / Re: Siglent's new product- MSO/SDS2000 Series on: August 19, 2014, 01:11:27 pm
no, did you?
6  Using Arduino / Networking, Protocols, and Devices / MOVED: Ajuda Urgente projeto automação on: August 19, 2014, 01:10:25 pm
This topic has been moved to Portugues.

http://forum.arduino.cc/index.php?topic=261735.0
7  Using Arduino / Sensors / Re: Sensor for air/gas flow on: August 19, 2014, 01:09:31 pm
6 months for 5 pounds means less than 1 gram per hour.

you might better use a precision scale to weight it..
8  Using Arduino / Sensors / Re: Sparkfun Digital QRE1113. Can this be used as on/off switch? on: August 19, 2014, 01:07:44 pm
Quote
Is it possible to program them to return HIGH when there is reflectance and LOW when the surface is dark.

write a wrapper around the analogRead

Code:
int isReflective(int pin)
{
  int raw = analogRead(pin);
  if (raw > 500) return HIGH;
  return LOW;
}
9  Using Arduino / Sensors / Re: How to measure speed and direction in high accuracy, low speed and low cost on: August 19, 2014, 01:04:25 pm
Quote
I find myself reading for ages and then not being sure if it fits,
this is called the learning curve, you should not be afraid of it.

It seems you found the right sensors and best way is to find one that has a library and start going through its examples.

Lot of the learning curve can be fun by actual building the thing.
10  Using Arduino / Audio / Re: How can I ignore all messages that arent notes? (i.e.midi clock) on: August 19, 2014, 12:59:44 pm
In general you need to recognize the individual messages to know how many bytes to skip for the next message.

so there is probably no silver bullet for this...

11  Using Arduino / Project Guidance / Re: Heartbeat Simulation (light, sound and haptic feedback) on: August 19, 2014, 12:56:35 pm
merged cross-post (please don't do that)
12  Using Arduino / Programming Questions / Re: how to implement collected data into algorithm on: August 19, 2014, 12:50:32 pm
a function that can generate a random amplitude between 0 and 1.

Code:
float generateAmplitude()
{
  return random(0,10000) * 0.0001;
}

If the amplitude stream must behave differently you should adapt the inner part accordingly,
e.g. read values from an SD card, a circular array, from your analogRead(), from the inner clock % some prime

example a simple sawtooth, every call is 1/1000 more that the previous until it reaches 1.0 then it resets.
Code:
float generateAmplitude()
{
  static value = 0;
  value = value + 0.001;
  if (value >= 1) value = 0;
  return value;
}

your turn
13  Using Arduino / Project Guidance / Re: how to restart millis()?? on: August 19, 2014, 12:44:24 pm

Why not using - http://playground.arduino.cc/Code/StopWatchClass - which is made for that.

by the way it is millis() based the way JimboZA describes smiley
14  Using Arduino / Project Guidance / Re: Heartbeat Simulation (light, sound and haptic feedback) on: August 19, 2014, 12:41:57 pm

Quote
the visual indicator of the heartbeat (leds pulsing)
LEDs don't pulse. They are either on or off.
But with PWM you can fake pulses quite well
15  Using Arduino / Project Guidance / Re: Using Arduino as Bike Speedometer (with generator hub) on: August 19, 2014, 12:40:49 pm
some thoughts:

you can always put an opto coupler in between...

if you think the voltage can be 20V -> double it 
spike's law: voltage spikes can be twice as high even if you take spike's law into account smiley

or use a Zener to flatten it.

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