Fahren mit 2 Autos pro Spur

[72Sonett]

Dieses Wochenende nochmal nachgedacht und weitergebastelt... 

Der Arduino Uno/Nano hat 6 analoge Eingänge (A0..A5) und  6 PWM Ausgänge (3, 5, 6, 7, 9, 10, 11). Es ist also möglich mit 1 Arduino 1,5  H-Brücke zu regeln (6 Autos), mit 2 Arduinos also 3 H-Brücken und 12 Autos!

Für 1 Arduino mit 1 H-Brücke sieht das so aus:







Und die Arduinokode (für 6 Autos):

Code:

// AMScontrollerPWM.ino
//
// controls 2x 2 Faller AMS cars in same lane
// using L298N dual H bridge module and 4 (slide) potmeters
//
// ================================= [include libraries ] ==========================================
//  none
// ================================= [global variables ] ==========================================
//
// input pins potmeters
const byte speed6pin =  A0; // speed car 6 ++/--  potmeter
const byte speed1pin =  A1; // speed car 1 ++/--  potmeter
const byte speed2pin =  A2; // speed car 2 ++/--  potmeter
const byte speed3pin =  A3; // speed car 3 ++/--  potmeter
const byte speed4pin =  A4; // speed car 4 ++/--  potmeter
const byte speed5pin =  A5; // speed car 5 ++/--  potmeter
//
// output pins H-bridge 1 (PWM)
const byte car1pin = 11; // lane A, cars 1 & 2
const byte car2pin = 10; 
const byte car3pin = 6;  // lane B, cars 3 & 4
const byte car4pin = 5;
// output pins H-bridge 2 (PWM) 
const byte car5pin = 4;  // lane C, cars 5 & 6
const byte car6pin = 9; 
//
const byte pulsetime = 10;  // pulse length at 50 Hz = 1/50 sec = 0.020 sec = 20 ms = 10 msec +pulse + 10 msec -pulse
//
// =========================== [ set up ]=========================================================================
void setup() {
  pinMode(LED_BUILTIN, OUTPUT);
  digitalWrite (LED_BUILTIN, HIGH);  // built-in LED on
  pinMode(speed1pin,INPUT);  // potmeter speed car 1
  pinMode(speed2pin,INPUT);  // potmeter speed car 2
  pinMode(speed3pin,INPUT);  // potmeter speed car 3
  pinMode(speed4pin,INPUT);  // potmeter speed car 4
  pinMode(speed5pin,INPUT);  // potmeter speed car 5
  pinMode(speed6pin,INPUT);  // potmeter speed car 6
  
  pinMode(car1pin,OUTPUT);   // control of H bridge 1, cars 1..4
  pinMode(car2pin,OUTPUT);   // all pins output
  pinMode(car3pin,OUTPUT);
  pinMode(car4pin,OUTPUT);
  pinMode(car5pin,OUTPUT);   // control of H bridge 2, cars 5,6
  pinMode(car6pin,OUTPUT);
  
  digitalWrite(car1pin,LOW); // all cars stop
  digitalWrite(car2pin,LOW); 
  digitalWrite(car3pin,LOW);
  digitalWrite(car4pin,LOW);
  digitalWrite(car5pin,LOW);
  digitalWrite(car6pin,LOW);
  delay (1000);                     // wait 1 sec
  digitalWrite (LED_BUILTIN, LOW);  // built-in LED off
}
// =========================== [ main ] ==========================================================================
void loop() {
  // ADC value on potmeter speed pin = 0..1023
  // divide by 4 to convert to pulse 0..255 ==> 0..100% duty cycle
  //
  // for '+' cars in lane A, B & C (cars 1, 3 & 5)
  digitalWrite (car1pin,LOW);
  analogWrite  (car2pin,analogRead(speed1pin)/4); // + car 1 in lane A
  digitalWrite (car3pin,LOW);
  analogWrite  (car4pin,analogRead(speed3pin)/4); // + car 1 in lane B
  digitalWrite (car5pin,LOW);
  analogWrite  (car6pin,analogRead(speed5pin)/4); // + car 1 in lane C
  delay (pulsetime); // wait positive halfwave

  // for '-' cars in lane A, B & C (cars 2, 4 & 6)
  digitalWrite (car2pin,LOW);
  analogWrite  (car1pin,analogRead(speed2pin)/4); // - car 2 in lane A
  digitalWrite (car4pin,LOW);
  analogWrite  (car3pin,analogRead(speed4pin)/4); // - car 2 in lane B
  digitalWrite (car6pin,LOW);
  analogWrite  (car5pin,analogRead(speed6pin)/4); // - car 2 in lane C
  delay (pulsetime); // wait negative halfwave
  
} // repeat forever
 
// ==========================[ end main ] ========================================================================

 Diese woche weiterbasteln...