#include <Servo.h>

Servo arm;

int ch5;
int val;
void setup() {
  // put your setup code here, to run once:
  arm.attach(9);
  pinMode(10, INPUT);
  Serial.begin(9600);

}

void loop() {
  // put your main code here, to run repeatedly:
ch5 = pulseIn(10, HIGH, 25000);
val = map(ch5, 984, 1968, 0, 180);
val = constrain(val, 0, 180);

  arm.write(val);
delay(15);

Serial.print("Channel 5:");

Serial.println(val);
}