Some new stuff
  1. Arduino Park Control
  2. Arduino USB2serial programming the bare bone
  3. Arduino Projects Videos added
  4. Arduino Xbee projects
  5. Arduino dB Meter 
  6. Trying to get the IOIO going. 
  7. IOIO is going....bluetooth
  8. Attiny 2313 bluetooth bee RC car
  9. Compass and temperature added
  10. AVR programmer
  11. USB2Serial and Ethernet POE
  12. Arduino LPG Sensor
  13. Program the Arduino Mini 05
  14. Lipo Rider Pro in action
  15. EZ Robot Builder kit arrived 10 Nov 2012
  16. Arduino VA Meter!
  17. 05 Nov 2012 Project Sentry Gun.
  18. Attiny85 PIR Sensor 10 Dec 2012 
  19. 0-30VDC3A and 2-28VDC10A bench PSU's
  20. 19 Dec 2012 Arduino Voltmeter LCD
  21. 29 Dec 2012 Arduino Tachometer&Speedometer LCD
  22. 03 Jan 2013 Arduino AC Phase Control. 
  23. 18 Jan 2013 Arduino Distance Meter
  24. 22 Jan 2013 Arduino Digital Clock and Date
  25. 31 Jan 2013 Arduino Digital Clock and Date 8x2 LCD
  26. Feb 2013 LCD and Backpack
  27. Feb 2013 7 Segment Serial Clock Sparkfun. Distance Sensor with "newping" library
  28. Feb 2013 Lelo Remote
  29. 01/03/2013 Arduino Adafruit 7 Seg Digital Clock with RTC and backpack 
  30. Arduino Frequency Meter 26/03/2013
  31. Another RC  Car controlled by Arduino 06/04/2013
  32. My quadcopter project update 25 April 2013
  33. My Aqua Quad Copter Flying 26 April 2013enlightened
  34. Another monster RC truck;strong one! 11July2013cool
  35. X-Frame Quad Copter 31 July 2013cool
  36. Arduino GSM Sheild added.28/8/2013
  37. 1.8inch TFT screen 13/09/2013cool
  38. 04/11/2014 added PID Soldering Iron Control
  39. Added bluetooth servo control 04/11/2014
  40. ESP8266 first try.16/03/2015
  41. Arduino Uno Quadcopter 19 May 2015
  42. IOT WemosD1 Amp Meter

 

 



Arduino Led Light Switch.

25 November 2013

Video  click here

Simple but so effective.

Use green or yellow 5mm with cathode on gnd of Arduino UNO and anode on AR.

Got the code from instructables.com

Code:

int led = 13;                                        // the pin where you will put the LED
int sensorpin = A3;                           // the analog pin where you put your sensorLED
int resetteller = 0;                              // the rest are counters and variables to calculate with
int sens = 0;
int teller = 0;
int basis = 1024;
int test = 1024;
int test2 = 1024;
int test3 = 1024;

// this are the values to play with to get better (or worse) results
int marge = 5;                         // the space between a positive and negative reading
int vertraging = 1;                  // the speed of the readings; a lower number is a higher speed
int samples = 70;                   // the amount of samples to compare to make one reading
int resetsamples = 30;          // how many cycles to run the light on before you don't trust the value anymore

void setup() {
  pinMode(led, OUTPUT);
  Serial.begin(9600);                                   // no real part of the program, just for debugging
  for(teller =0; teller < samples; teller++) {// remember the lowest value out of many readings
   sens = analogRead(sensorpin);
   if (sens < basis){basis = sens;}
   delay(vertraging);                                     // the sensor needs a delay here to catch its breath
  }
}


void loop() {                                            
for(teller =0; teller < samples; teller++) {// remember the lowest value out of many readings
   sens = analogRead(sensorpin);
   delay(vertraging);                                   // the sensor needs a delay here to catch its breath
   if (sens < test){
   test3 = sens;                                            // remember the 3 lowest readings
   test2 = test3;
   test = test2;}
  }
  if (test < basis-marge && test2 < basis-marge && test3 < basis-marge){//all 3 low readings mus be < the basis reading
    digitalWrite(led, HIGH);
    resetteller++;                                         // count how long the LED stays on
  }
    else{
      digitalWrite(led, LOW);
      basis = test;                                         // if the lowest test reading is higher than the basis, basis will be reset
      resetteller = 0;
    }
    if (resetteller > resetsamples){basis = test;}//if LED stays on to long, we don't trust it and reset basis
    Serial.print(basis);Serial.print("  ");Serial.print(test);Serial.print("  ");Serial.println(sens);//just for debugging
    test = 1024;
}  

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