No RC Signals Received by Arduino Mega With Multiwii and other Firmware!

Projects General Guidance
1

Components I'm using are as follows:

  • Arduino Mega with Arduino Uno sheild
  • DJI F450
  • 4 x A2122/13t 1000kv Brushless Motors
  • 4 x 30A Chienese ESC
  • Fsi6 transmitter and Fs-r6B receiver
  • lipo 3s 2800mah
  • GY 521 Accelrometer and Gyro Sensor

I've Tried Multiwii and an opensource code with both firmware flashed on Arduino. It doesn't receive any transmitter signals hence there is no motor spinning.

Both code are as follows:

  1. Multiwii
  2. OpenSource Code

I've Also Tested the RC Reciever and Transmitter with this piece of code:

double channel[4];


void setup() {
  // put your setup code here, to run once:
pinMode(3,INPUT);
pinMode(4,INPUT);
pinMode(5,INPUT);
pinMode(6,INPUT);
Serial.begin(9600);
}

void loop() {
  // put your main code here, to run repeatedly:
  channel[0] = pulseIn(3,HIGH);
  channel[1] = pulseIn(4,HIGH);
  channel[2] = pulseIn(5,HIGH);
  channel[3] = pulseIn(6,HIGH);
  Serial.print(channel[0]);
  Serial.print(" , ");
  Serial.print(channel[1]);
  Serial.print(" , ");
  Serial.print(channel[2]);
  Serial.print(" , ");
  Serial.print(channel[3]);
  Serial.println(" ");
}

My motors are calibrated with my fs-i6 before calibration Arduino was able to read the signals with the opensource code but not with multiwii.

I want to know what can I do to make Arduino recognize my transmitter signals and arm the motors?

2

I'm unable to post the code here because the limit is 9000 characters can I post it on paste bin and post here in case if someone wants to look at those codes?

3

Just add your .ino file as an attachment.

And please post a link to the datasheet for the wireless receiver.

...R

4

Hey, I hope you're doing well!

My issues have been resolved after I got some sleep.

I was repeating the same mistake of placing pins according to nano and uno on my mega.

Now I've used A8, A9, A10 and A11 for throttle, pitch, yaw and roll now it's receiving signals.

My other question is how to place propellers I guess I'm doing it wrong because the Drone is not taking off even on full throttle.

I've attached a picture of it below!

Red ones are clockwise and white ones are anticlockwise.

https://i.imgur.com/LFgltSU.jpg(image larger than 4 MB)

5

It's hard to be sure but the white ones look like they should rotate clockwise (looking towards the motor with the motor behind the propeller) - the straight side is usually the leading edge. I can't say about the red ones as the picture does not show them as clearly.

Holding a strip of paper so the end is above or below the rotating propeller should be a simple test of airflow direction - just don't let the propeller hit your hand as it could cause a nasty injury.

...R

6

I'll try that paper method out and thankyou for helping me!

7

Robin2:
Holding a strip of paper so the end is above or below the rotating propeller should be a simple test of airflow direction - just don't let the propeller hit your hand as it could cause a nasty injury.

I've adjusted the propellers got two of them wrong!

but now only right side of the drone is lifting up I tried to play with Trims on my FS-i6 it allowed me to generate thrust for three motors now!

but the motor on right is not generating enough thrust to lift off the ground!

here are my readings on multiwiiconf on full throttle

can you please guide me a lil bit about what I'm doing wrong?

Multiwii.png
Multiwii.png1010×604 59.6 KB