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1  Using Arduino / Sensors / Rotary encoder wake-up on: November 10, 2013, 05:14:20 am
Hi

I would like to have an energy saving for my Arduino so it shuts down when not in use (10 seconds timeout)
That's not a problem

The problem is I want it to wake up when I use a knob on top of my device, which is connected to a rotary encoder
So the Arduino should wake up immediately and register the change in the encoder

Can this be done?
2  Using Arduino / Audio / Re: Leonardo direct MIDI USB on: September 02, 2013, 09:37:45 am
I'm not sure this is related to this post

Can it identify itself as a MIDI device to a PC?
3  Using Arduino / Audio / Re: Leonardo direct MIDI USB on: June 10, 2013, 01:05:24 am
I think teensy has a board with MIDI driver embedded
4  Using Arduino / Audio / Re: Leonardo direct MIDI USB on: May 30, 2013, 02:07:55 am
This thread is about MIDI
Please don't add unrelevant information
5  Using Arduino / General Electronics / Re: Detecting line disconnection on: April 04, 2013, 11:11:18 am
I have no idea what the problem was so I started over and used 2 optocouplers and it all works now

Thanks alot for the help!  smiley-yell
6  Using Arduino / Audio / Re: Leonardo direct MIDI USB on: March 31, 2013, 05:13:53 am
Looks interesting
Might try it sometime
7  Using Arduino / General Electronics / Re: Detecting line disconnection on: March 15, 2013, 12:46:17 pm
So I have set 13 to output and even added some serial output
It still works for some reason
8  Using Arduino / General Electronics / Re: Detecting line disconnection on: March 15, 2013, 12:29:12 pm
I don't think you should be using digitalRead() on a pin that's an OUTPUT.
It's perfectly acceptable.

Reading a pin configured as an OUTPUT will return the last state set by digitalWrite().

Umm, but this isn't what I want, and it doesn't do that actually
It will return low if connected to the external circuit
And high when disconnected
9  Using Arduino / General Electronics / Re: Detecting line disconnection on: March 15, 2013, 12:06:47 pm
This seems to work fine
Am I doing this right?

Code:
#define epin 4

void setup(){
  pinMode(epin, OUTPUT);

  digitalWrite(epin, HIGH);
}

void loop(){
  // If the LED on pin 13 is on, it meens that the connection was broken
  digitalWrite(13, digitalRead(epin));
 
  delay(15);
}
10  Using Arduino / General Electronics / Re: Detecting line disconnection on: March 15, 2013, 11:40:57 am
This seems to work nicely but the wire pin gives just a little bit of current
I'm using a 2N4401 transistor for the external device and its needs more current
11  Using Arduino / General Electronics / Detecting line disconnection on: March 15, 2013, 05:52:33 am
Hi,

I'm making a bomb prop with an external trigger connection
The connection will get a constant 5V power supply so if it's disconnected, the external circuit knows that, and detonates the smoke bomb or what ever
But I also want that the bomb will "explode"

So the Arduino will have the external trigger connected on a digital pin configured to output
An I want it to connect SOMEHOW to an input pin so I'll know when it's disconnected

How can this be done?

Thanks!
12  Topics / E-Textiles and Craft / Re: EL Driver Beeps on: January 28, 2013, 09:13:05 am
The driver is a plastic case with the top face open, which is filled with resin
So how come it's still vibrating?
13  Topics / E-Textiles and Craft / EL Driver Beeps on: January 28, 2013, 07:27:16 am
I bought an EL sheet and driver, but when I power them, the driver beeps
It's logical because the driver is AC, I guess

But is there any way to silence the beep, or are there silent drivers out there?
14  Using Arduino / Microcontrollers / Re: Messed up some fuses on: January 04, 2013, 01:18:00 pm
These: Low-41 High-D9 Ext-FF
15  Using Arduino / Microcontrollers / Re: Messed up some fuses on: January 04, 2013, 01:06:45 pm
I it possible I will have to replace the 16 mhz crystal with a 8 mhz one?
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