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 **broken link removed**.
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.
This is a FPV camera switcher.
It is looking for the servo output of a radio controlled receiver.
Some of them need to be calibrated.
You will fine much more info if you look at "FPV camera switcher"
Using the #include <Servo.h> Servo library I was able to get the following values confirmed that switched the video input:
Code:
cam1 = 0-64 and also 153-180
cam2 = 65-123
cam3 = 124-152
The arduino code looks like this:
Code:
#include <Servo.h>
Servo myservo;
int pos = 0;
void setup()
{
myservo.attach(9);
Serial.begin(9600);
}
void loop()
{
for(pos = 0; pos < 180; pos += 1) // goes from 0 degrees to 180 degrees
{ // in steps of 1 degree
myservo.write(pos); // tell servo to go to position in variable 'pos'
Serial.println(pos);
delay(1000); // waits 1 minute so i can see the value
}
}