Navigation Light Control

You could use an unused servo channel for this. In them Mission planner there is a special waypoint type (DO_SET_SERVO) which can change a servo channel output on APM (that way, it would also be possible to change the lights directly from the Transmitter).

I am using an ATtiny85(~$3) to switch some additional stuff. I am only switching LEDs, you probably would need a FET to switch more powerful lights.

Example ATtiny85 code:


/**
 * Read PPM signal
 * 
 * Decode r/c receiver PPM servo signal and turn lights on 
 * according to servo position.
 *
 * $Id$
 */

// from which pin to read.
#define PIN_PPM 0
#define PIN_POS1 3
#define PIN_POS2 4

// the length of the pulse (in microseconds) or 0 if no pulse
// started before the timeout (unsigned long)
unsigned long duration, lastgood = 0;
int position= 0;

void setup() {
  pinMode(PIN_PPM, INPUT);
  pinMode(PIN_POS1, OUTPUT);
  pinMode(PIN_POS2, OUTPUT);
  digitalWrite(PIN_POS1, LOW);
  digitalWrite(PIN_POS2, LOW);
  //Serial.begin(115200);
}

void loop() {
  duration = pulseIn(PIN_PPM, HIGH, 20000);
  if (duration == 0) {
    duration = lastgood;
  } else {
    lastgood = duration;
  }

  position = map(lastgood, 1000, 2000, 0, 2);
  if (position > 0) {
    digitalWrite(PIN_POS1, HIGH);
  } else {
    digitalWrite(PIN_POS1, LOW);
  }

  if (position > 1) {
    digitalWrite(PIN_POS2, HIGH);
  } else {
    digitalWrite(PIN_POS2, LOW);
  }
}

Best

-S

AVR 8 Pin 20MHz 8K 4A/D - ATtiny85

Atmel's itty-bitty ATtiny85 8-Bit Processor. 8K of program space, 6 I/O lines, and 4-channel 10 bit ADC. Runs up to 20MHz with external crystal. Pack…

Replies

jeremy tom May 7, 2014 at 2:26am

I found this great website to help you compare products and brands: http://www.nauticexpo.com/boat-manufacturer/navigation-light-398.html
Euan Ramsay November 11, 2013 at 1:17am

I just use this controller on my quad, with the really high vis LED's:

http://www.braincube-aero.com/index.php?main_page=product_info&....

Runs off a single channel. Simples. Warning: it's heavier than you might think.
Simon Wunderlin September 25, 2012 at 11:22am
You could use an unused servo channel for this. In them Mission planner there is a special waypoint type (DO_SET_SERVO) which can change a servo channel output on APM (that way, it would also be possible to change the lights directly from the Transmitter).

I am using an ATtiny85(~$3) to switch some additional stuff. I am only switching LEDs, you probably would need a FET to switch more powerful lights.

Example ATtiny85 code:
```
/**
 * Read PPM signal
 * 
 * Decode r/c receiver PPM servo signal and turn lights on 
 * according to servo position.
 *
 * $Id$
 */
```
// from which pin to read.
#define PIN_PPM  0
#define PIN_POS1 3
#define PIN_POS2 4

// the length of the pulse (in microseconds) or 0 if no pulse
// started before the timeout (unsigned long)
unsigned long duration, lastgood = 0;
int position= 0;

void setup() {
  pinMode(PIN_PPM, INPUT);
  pinMode(PIN_POS1, OUTPUT);
  pinMode(PIN_POS2, OUTPUT);
  digitalWrite(PIN_POS1, LOW);
  digitalWrite(PIN_POS2, LOW);
  //Serial.begin(115200);
}

void loop() {
  duration = pulseIn(PIN_PPM, HIGH, 20000);
  if (duration == 0) {
    duration = lastgood;
  } else {
    lastgood = duration;
  }

  position = map(lastgood, 1000, 2000, 0, 2);
  if (position > 0) {
    digitalWrite(PIN_POS1, HIGH);
  } else {
    digitalWrite(PIN_POS1, LOW);
  }

  if (position > 1) {
    digitalWrite(PIN_POS2, HIGH);
  } else {
    digitalWrite(PIN_POS2, LOW);
  }
}

Best

-S
AVR 8 Pin 20MHz 8K 4A/D - ATtiny85

Atmel's itty-bitty ATtiny85 8-Bit Processor. 8K of program space, 6 I/O lines, and 4-channel 10 bit ADC. Runs up to 20MHz with external crystal. Pack…

This reply was deleted.

Discussions

Navigation Light Control

Replies

Activity