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1  Using Arduino / Sensors / Re: peizo knock Example on: March 10, 2013, 04:21:57 am
Firstly  By comments I must be in the wrong section or something?
If so I am sorry, I started this because i could not find anything about getting knock examples to work.

Jim, I cant tell you how much I have appreciated your efforts, and I am really sorry I asked you for your help, I had no idea that it would be so difficult.
Chagrin, Thanks for giving me these links to  look at, but I am lost just trying to get the arduino board with thier most basic example working.
It is an impossibility for me to start learning this stuff now, at over 70 it's too late.  Mechanical, HTML, Gcode, Mcode, basic electronics, and that is my lot.
unless there  is an off the shelf item, I could not achieve it.

I thought my project would be fairly easy, even for me,  how wrong I was, &  I am really embarrassed that Jim has gone so far for me.
So I will have to persevere with no protection. I figure since i need the absolute minimum touch, that hopefully it wont do to much damage.

My  peizo would not activate no matter how hard i Pressed or squeezed, only if I tapped it, so off to Google.
Peizo that are designed to compressed are different,  while they all may piezoelectric units, speakers & buzzers are only covered with this active compound.
Units made to compress are a bit thicker to accomplish that, one universal accepted is Peizoelectric film.
I found One that seems to be promising,  and Arduino apparently are/were putting in their starter kit.  https://www.sparkfun.com/products/9199

Help,  the next part of the project is to get it not to put KNOCK,    but to activate an IC relay
If any  have any suggestions, That would be really good.
2  Using Arduino / Sensors / Re: peizo knock Example on: March 09, 2013, 03:05:41 am
I thank all who have commented, it all helps me. It helps in joining the Dots
You can probably see by my comments, I am mentally challenged when it comes to Electronics, and forums also for that matter.

I just tried another 1K resistor   and it DID improve the sensitivity.
My objective with my Arduino Knock is to make an peizo digitizing sensor for my DIY cnc  machine. 
I have been experimenting with mechanical digitizing probes, but with the vast amount of make & break contacts,  the points give out at about 30 - 40,000.

So I saw this fellows idea,  but I cant contact him.  I wish I could,  I can probe and  produce Gcode  no problem, we could help each other.
So it's trial and error,  and with the the help from others I hope to finally have some success.

3  Using Arduino / Sensors / Re: peizo knock Example on: March 09, 2013, 02:01:39 am
JIM,  Thanks for putting in the time & effort to do that,

I have it working of sorts.  Nothing like the sensitivity I want, but working.
Look at this for sensitivity:   https://www.youtube.com/embed/8ZVFKvgJQtA?feature=player_detailpage

I have changed
1) const int threshold =1;  // threshold value to decide when the detected sound is a knock or not
2) int sensorReading = 1.2;      // variable to store the value read from the sensor pin
3) delay(2);  // delay to avoid overloading the serial port buffer

I also read somewhere that if you increase the size of resister, it will increase sensitivity,  any body know anything about that?
4  Using Arduino / Sensors / Re: peizo knock Example on: March 08, 2013, 08:43:06 pm
Reply to Jimbo
Thanks:
1) what's happening that should not happen, [ Nothing, seems fine ]
2) what's not happening that should?  [ It is suppose to activate the LED and place a notice on the monitor The peizo does not work the program ]
3) Sketch is loading, compiling OK & from what I know it appears to be working OK  There are no error messages in the box.
The TX TR led's flash on loading as well as the led.

4) The code I have used & loaded is the code in;  File/ examples/ Sensors/ Knock

Arduino has assigned COM3
I have connected the board as per Image
5  Using Arduino / Sensors / peizo knock Example on: March 08, 2013, 02:26:13 am
Arduino UNO Board:
I have actually progressed from the blink example.  I have  read  everything I can find, and look at so many items in the forum , but cant find anything  on the knock example.
I think I have followed what  directions I have found,  but  I  am unable to get it to work.
If kind person that has progressed  through this area might be able to enlighten me, I would be appreciative. 
6  Using Arduino / Installation & Troubleshooting / Re: Newby cannot load drivers on: March 07, 2013, 11:50:31 pm

Hi,
Sorry, Update:    I never had my board plugged in.
I do  now show unknown  devices showing in Device Manager.
But still cant find Arduino    or ,inf files anywhere.
7  Using Arduino / Installation & Troubleshooting / Re: Newby cannot load drivers on: March 07, 2013, 11:40:45 pm
 Louis Davis
Hi,
Sorry, but  I  don't have any unknown  devices showing in Device Manager.

 So  what can I do?
8  Using Arduino / Installation & Troubleshooting / Re: Newby cannot load drivers on: March 07, 2013, 11:29:42 pm
Another Newbie: 
I to thought I would have at least blink going today  also

 But I cant find it anywhere in  "device manager"  either.
I am using Win7,  have downloaded & reloaded a few times but still not evident.
Mine are  not showing in unrecognized devices either.

In answer to Osgeld, 
Found the Arduino driver file but could not find    .inf file

Thanks in advance
9  Using Arduino / Installation & Troubleshooting / Re: Arduino 1.0.3 wont load on: March 07, 2013, 10:30:00 pm
Another Newbie:   I hope I am in the right area.
In my case it appears to be loaded when  onscreen  it seems to work  with all the dropdown boxes etc. 
But on going through and following the FAQ's  I cant find it anywhere in  "device manager"
Using Win7,  have downloaded & reloaded a few times but still not evident.  What am I not doing right?
P/S
When plugged in  without being   initiated on screen  the board has the power light on and orange flashes on and off  at approx 1 sec intervals.
 
Thanks in advance
10  Using Arduino / Project Guidance / Piezo to operate a relay on: March 04, 2013, 09:59:28 pm
Hi,
I am behind B4 I start.
1) New, to the forum,
2) First experience with Arduino boards,
3) Old, retired, & mentally challenged with electronics,

My question is:
How can I get  piezo operate a small relay? on the UNO board
I would like the piezo to  operate relay to make & break  a closed 3vdc circuit.

I have looked it the Arduino Knock, but cant find anything operating a relay.
I would really appreciate if someone could give some direction. (to be honest, show me how to do it)
No Idea 
Thanks in advance
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