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1  Using Arduino / Project Guidance / Re: light barrier for airplanes on: Today at 06:01:40 am
Could you shine a bright light upwards (wide beam - not a laser) and have several photodetectors so that any one of them would detect a reflection from the airplane.

...R

yes could be possible but how does this handle the sunlight?

Andy
2  Using Arduino / Project Guidance / Re: light barrier for airplanes on: Today at 05:35:05 am
I could make it solid like a U out of wood.

Andy
3  Using Arduino / Project Guidance / light barrier for airplanes on: Today at 04:52:25 am
Hy

I got some pylons around 3 meters high and it is similar to redbull airrace where you fly between those pylons.
The time gets measured when you enter the circuit and when you got out through the same gate. The difference
then is the time you needed for the course.

Now I like to trigger the clock with a light barrier but how can you do that over 3 meters height? Since not
everyone is crossing the two pylons at exact the same height? With laser you would need several at different
height, sonar is probably to slow and wide??? What else exist out there?




Andy
4  Using Arduino / Networking, Protocols, and Devices / Arduino and the adf7012 on: June 13, 2014, 03:06:47 am
Hy there

Has someone already used a adf7012 togehter with an Arduino?

Thx
Andy
5  Using Arduino / General Electronics / Re: Instead of IR transmitter / receiver, wire directly? on: April 18, 2014, 06:31:33 am
I use a "small" Quadrocopter to do some aerial filming. It has two cameras on board.
The video Switch is there to get both Images in a PiP mode or switch between one or another camera over my Remote Control.
An Arduino is now sensing the values from the transmitter and sends the IR pulses to de Video switch.
This was a test flight with the video Switch:
https://www.youtube.com/watch?v=pu4scjeRMT4

Andy
6  Using Arduino / General Electronics / Re: Instead of IR transmitter / receiver, wire directly? on: April 17, 2014, 06:50:40 am
thx for the ideas.
The problem this device is flying smiley And the space for an IR LED and Receiver is just to small to fit in.

I will try to do it with a digital pin. Before I use the IRremote.h library to control the board with those commands:

#define MENU       0x4FB906F
#define MODE       0x4FB02FD
#define ENTER      0x4FB8877
#define ARROWUP    0x4FBF807
#define ARROWDOWN  0x4FB6897
#define ARROWRIGHT 0x4FBA857
#define ARROWLEFT  0x4FBD827
#define MODE1      0x4FB32CD
#define MODE2      0x4FB20DF
#define MODE3      0x4FB00FF
#define MODE4      0x4FB50AF
#define MODE5      0x4FB7887
#define MODE6      0x4FB708F
#define MODE7      0x4FB58A7
#define CH1        0x4FB38C7
#define CH2        0x4FB28D7
#define CH3        0x4FBF00F
#define CH4        0x4FB30CF

Andy
7  Using Arduino / General Electronics / Re: Instead of IR transmitter / receiver, wire directly? on: April 17, 2014, 05:29:46 am
can't use serial since the other device (video switch) has just an IR Receiver...

Andy
8  Using Arduino / General Electronics / Re: Instead of IR transmitter / receiver, wire directly? on: April 17, 2014, 02:25:31 am
hmm thx for the reply's.. Sounds a bit too complicated... But I will give it a try

Andy
9  Using Arduino / General Electronics / Instead of IR transmitter / receiver, wire directly? on: April 16, 2014, 06:13:57 am
Hy

I currently use an Arduino to control a device over an IR LED.
Is it possible to use two wires directly from the Arduino
output to the IR of the device and use the same code I used
before to control it via the IR LED?

Andy
10  Using Arduino / Sensors / MAX11200 ADC on: March 12, 2014, 02:31:43 am
Hy

I like to use the MAX11200 with an Arduino and like to ask if someone has already made a library for the Arduino.
Or can someone help me to get it working with an Arduino.

Thx
Andy
11  Using Arduino / Installation & Troubleshooting / Re: Upload sketch to Arduino Nano without USB (via ISP?) on: November 12, 2013, 05:26:07 am
You might be able to do a little basic troubleshooting if you have access to a digital multimeter. The USB +5vdc is isolated from the board's 5vdc bus by a diode D1. See if after you plug in the USB if you have +5vdc on the anode side of the diode but not on the cathode side which would indicate an open diode.

 As far as using the ISP method of programming the arduino board that is pretty simple using a hardware programmer or another arduino board running the arduinoISP sketch and then using the IDE's file menu option of upload sketch using programmer option.

Lefty

Hm ok I got an Open Diode....
What happens when I remove it?
Can I still use the Nano?

Andy
12  Using Arduino / Programming Questions / Re: How does define work? on: March 04, 2013, 06:41:22 am
thx a lot to all of you explaining me the problem and the difference among the const and define statement!!!

Andy
13  Using Arduino / Programming Questions / Re: How does define work? on: March 04, 2013, 05:44:37 am
wow thx a lot

so const is similair to define you still can't change the value after it is "defined" in the code?

Andy
14  Using Arduino / Programming Questions / How does define work? on: March 04, 2013, 05:13:18 am
Hy

I got a strange behaviour when I use this code:

Code:
#define alt  10000


void setup(){
  Serial.begin(115200);

  Serial.println(alt);

  if (55000 >= (alt * 100)){
    Serial.println("Yes");
  }
  else{
    Serial.println("no");
  }
}


void loop(){ }


Why Is the Output yes? Since 10000 * 100 is greater then 5500??

Whe I use following code it works:
Instead of *100 I use *100.


Code:
#define alt  10000


void setup(){
  Serial.begin(115200);

  Serial.println(alt);

  if (55000 >= (alt * 100.0)){
    Serial.println("Yes");
  }
  else{
    Serial.println("no");
  }
}


void loop(){ }



I don't get it!!

Andy
15  Using Arduino / Networking, Protocols, and Devices / Re: 3-wire Serial Configuration Interface on: December 12, 2012, 08:49:46 am
ok.. I have to look at this forst since I don't get right know...
Thx for the answers...
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