Using 3 Channel Video Switcher Module with Arduino

Discussion in 'The Projects Forum' started by StealthRT, Dec 7, 2014.

  1. StealthRT

    Thread Starter Senior Member

    Mar 20, 2009
    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?


    Well I've tried the following code:
    Code (Text):
    2. int LED_pin = 9; // must be one of 3, 5, 6, 9, 10 or 11 for PWM
    4. void setup() {
    5.   pinMode(LED_pin, OUTPUT); // Initialize pin for output
    6. }
    8. void loop() {
    9.   int dtwait = 1000; // Pause interval, milliseconds
    10.   int V1=20, V2=220, V3=120; // 8-bit output values for PWM duty cycle
    11.   analogWrite(LED_pin, V1);
    12.   delay(dtwait);
    13.   analogWrite(LED_pin, V2);
    14.   delay(dtwait);
    15.   analogWrite(LED_pin, V3);
    16.   delay(dtwait);
    17. }
    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 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?
  2. StealthRT

    Thread Starter Senior Member

    Mar 20, 2009
    One looks like it says P15V 331QE BZ10

    While the other side has one that maybe says STC 15F104E F-4V938.A