Using 3 Channel Video Switcher Module with Arduino

Thread Starter

StealthRT

Joined Mar 20, 2009
303
Hey all I am wondering how to go about switch from camera 1, 2 or 3 using this 3 Channel Video Switcher Module on ebay here.



Since there's only V+, V- and signal for the "switch" it looks to take a PWM but I am not quite sure if that's correct or not. If correct then how would I (in code) send that out for each camera to change?

UPDATE

Well I've tried the following code:
Code:
int LED_pin = 9; // must be one of 3, 5, 6, 9, 10 or 11 for PWM

void setup() {
  pinMode(LED_pin, OUTPUT); // Initialize pin for output
}

void loop() {
  int dtwait = 1000; // Pause interval, milliseconds
  int V1=20, V2=220, V3=120; // 8-bit output values for PWM duty cycle
  analogWrite(LED_pin, V1);
  delay(dtwait);
  analogWrite(LED_pin, V2);
  delay(dtwait);
  analogWrite(LED_pin, V3);
  delay(dtwait);
}
and just to test it I hooked up 2 green LEDs to digital pin 9 and I can confirm it does light the led's in 3 stages. From bright, medium and then dim-ish.

So I went ahead and powered up the FPV by hooking it up like so:


I'm not getting any voltage off that pin on the FPV. I even hooked up a volt meter and tested it without the LEDs attached to that pin and still had no reading.

Someone suggested looking at this post http://www.rcgroups.com/forums/showthread.php?t=1955631 but there so much code that I'm not sure what i need and what i don't need.

What could I be doing incorrectly?
 
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