I'm trying to send 5 ints in the range of 0-180 from Python to the Arduino Uno device using pySerial (py3K). I have managed to send 1 int by using python's struct lib (not sure if it's the best or fastest way but it works). However I'm failing to send more than 1 and every example online seems to stop at 1.

Here's the simplified code. The task is to send servo0-servo4 to the arduino and apply those values to the corresponding servos.

Python Code

import serial
import struct
import time

bge.arduino = serial.Serial('/dev/ttyACM0', 9600)

# let it initialize
time.sleep(2)

# the 5 ints to send
servo0 = 0
servo1 = 45
servo2 = 90
servo3 = 135
servo4 = 180

# send the first int in binary format
bge.arduino.write(struct.pack('>B', servo0))

Arduino code

#include <Servo.h>

Servo servo0;
Servo servo1;
Servo servo2;
Servo servo3;
Servo servo4;

void setup(){
  Serial.begin(9600);
  
  servo0.attach(3);
  servo1.attach(5);
  servo2.attach(6);
  servo3.attach(9);
  servo4.attach(10);
}

void loop(){
  
  if(Serial.available()){
    
    int message = Serial.read();
    
    // let's be safe
    if (message > 179){
      message = 179;
    }
    else if (message < 0){
      message = 0;
    }
    
    // control the servos
    servo0.write(message);

  }
  
}