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Hi, Initialize the ros handle with the same baud rate in your Arduino code nh.getHardware()->setBaud(BAUD) Something like this void setup() { Serial.begin(115200); nh.getHardware()->setBaud(115200); nh.initNode();

Once you are done uploading, start roscore and then type

rosrun rosserial_python serial_node.py _port:=/dev/ttyACM0 _baud:=115200

Make sure your port and baud rate are same.

Hi, Initialize the ros handle with the same baud rate in your Arduino code nh.getHardware()->setBaud(BAUD) Something like this this

   void setup() {
      Serial.begin(115200);
      nh.getHardware()->setBaud(115200);
      nh.initNode();
nh.initNode();

Once you are done uploading, start roscore and then type

rosrun rosserial_python serial_node.py _port:=/dev/ttyACM0 _baud:=115200

Make sure your port and baud rate are same.