Loosing power when read incoming serial signal from XBee

Community General Discussions
1

Have any of you seen the problem when you start getting signal from Xbee and lose the power?

this is the code I have:

 

 

void loop(){

  if(Serial.available() > 0) {

    assignVar();

  }

}

 

https://www.youtube.com/watch?v=WV6hP3hR5Gw
2

I don’t really know how to

I don’t really know how to describe but I will try my best. I connect them with single 2S LiPo thru 6V UBEC into both Arduino and the Shield. Here is the Shield I am using:

bzb8780053_01.jpg

The board itself provide 3.3 in XBee slot. Following is the UBEC I use to reduce the current to 6V. (Ignore the black chassis)

IMG_0960.jpg

I also try to connect 2 different battery but still same thing.

Something interesting thou. The code I use:

  void loop(){

if(Serial.available() > 0) {
    assignVar();
  }

If I comment out if(Serial...  just leave assignVar(); it works. Seems like it doesn't like Serial.avaliable()

This code causing the problem, but this works:

  void loop(){

char val = Serial.read();
  Serial.println(val);
  switch(val) {
  case '4'://Move

When all servos power out, it try to connect it back but as long as I keep the XBee on remote on it gets power out right that way.