Go Down

Topic: Arduino pulseIn returns weird values (Read 667 times) previous topic - next topic


Hi guys, brand new to arduino! So far I am loving the platform.

I'm trying to connect my arduino board to my RC receiver. I have the receiver powered using a pretty standard 4xAA pack, and I have one channel of the receiver connected to pin 7 on the arduino (I've tried several different pins for this).

My problem: The code below just returns numbers in the range of 8000 (sometimes 9000 and sometimes 7000), and this doesn't change when I apply the controllers joystick. What's weirder is that the numbers return even when the wire to pin 7 is unplugged from the receiver (but still attached to the arduino). Does this make sense? Any thoughts?

Code: [Select]
int pin = 7;
unsigned long duration;

void setup()
  pinMode(pin, INPUT);
  Serial.begin(9600); // Pour a bowl of Serial

void loop()
  duration = pulseIn(pin, LOW);
  Serial.print("Channel 1:"); // Print the value of
  Serial.println(duration);        // each channel


and I have one channel of the receiver connected to pin 7 on the arduino

And have you connected the ground of your receiver to the ground of the arduino?


Dec 22, 2013, 06:33 pm Last Edit: Dec 22, 2013, 06:49 pm by kschembri Reason: 1
No the ground is connected to the ground of the battery pack. Would that be the issue? Actually, the receiver doesn't have a ground - it's just +/-/signal? Would - be the ground?



For future reference this is why you need a common ground when connecting other equipment:-

Go Up

Please enter a valid email to subscribe

Confirm your email address

We need to confirm your email address.
To complete the subscription, please click the link in the email we just sent you.

Thank you for subscribing!

via Egeo 16
Torino, 10131