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--- documentation:electronique:modules_kits:em483_stepper:index [2021/05/12 15:46] – f1sls
+++ documentation:electronique:modules_kits:em483_stepper:index [2021/05/19 02:33] (Version actuelle) – f1sls
@@ Ligne 7: / Ligne 7: @@
 {{:documentation:electronique:modules_kits:em483_stepper:epson-em-483-schema_01.jpg?direct|}}
+{{:documentation:electronique:modules_kits:em483_stepper:l298n_controller_board_pinout.png?direct|}}
+{{:documentation:electronique:modules_kits:em483_stepper:l298n_controller_board.jpg?direct|}}
 ===== ARDUINO =====
 ==== LIBS ====
-  * https://github.com/worldthem/28bYJ48
+  * https://github.com/Mohamad1994HD/28BYJ48
 ==== SAMPLES ====
-<code=c++>
+{{:documentation:electronique:modules_kits:em483_stepper:arduino-bipolar-stepper-motor-control-circuit.png?direct&600|}}
+<code cpp>
 #define ButonControl 4
 #include <28BYJ48.h>
@@ Ligne 74: / Ligne 77: @@
   digitalWrite(7, LOW);
   }
+</code>
+----
+<code cpp>
+//////////////////////////////////////////////////////////////////
+//©2011 bildr
+//Released under the MIT License - Please reuse change and share
+//Using the easy stepper with your arduino
+//use rotate and/or rotateDeg to controll stepper motor
+//speed is any number from .01 -> 1 with 1 being fastest -
+//Slower Speed == Stronger movement
+/////////////////////////////////////////////////////////////////
+#define DIR_PIN 2
+#define STEP_PIN 3
+void setup() {
+  pinMode(DIR_PIN, OUTPUT);
+  pinMode(STEP_PIN, OUTPUT);
+}
+void loop(){
+  rotateDeg(360, 1);
+  delay(1000);
+  rotateDeg(-360, .1);  //reverse
+  delay(1000);
+  //rotate(1600, .5);
+  //delay(1000);
+  //rotate(-1600, .25); //reverse
+  //delay(1000);
+}
+void rotate(int steps, float speed){
+  //rotate a specific number of microsteps (8 microsteps per step) - (negitive for reverse movement)
+  //speed is any number from .01 -> 1 with 1 being fastest - Slower is stronger
+  int dir = (steps > 0)? HIGH:LOW;
+  steps = abs(steps);
+  digitalWrite(DIR_PIN,dir);
+  float usDelay = (1/speed) * 70;
+  for(int i=0; i < steps; i++){
+    digitalWrite(STEP_PIN, HIGH);
+    delayMicroseconds(usDelay);
+    digitalWrite(STEP_PIN, LOW);
+    delayMicroseconds(usDelay);
+  }
+}
+void rotateDeg(float deg, float speed){
+  //rotate a specific number of degrees (negitive for reverse movement)
+  //speed is any number from .01 -> 1 with 1 being fastest - Slower is stronger
+  int dir = (deg > 0)? HIGH:LOW;
+  digitalWrite(DIR_PIN,dir);
+  int steps = abs(deg)*(1/0.225);
+  float usDelay = (1/speed) * 70;
+  for(int i=0; i < steps; i++){
+    digitalWrite(STEP_PIN, HIGH);
+    delayMicroseconds(usDelay);
+    digitalWrite(STEP_PIN, LOW);
+    delayMicroseconds(usDelay);
+  }
+}
+</code>
+===== BIPOLAR STEPPER WITH H BRIDGE =====
+<code cpp>
+/*
+  Stepper Motor Demonstration 3
+  Stepper-Demo3.ino
+  Demonstrates NEMA 17 Bipolar Stepper with L298N Driver
+  Uses Potentiometer on Analog Input A0
+  Uses Arduino Stepper Library
+  DroneBot Workshop 2018
+  https://dronebotworkshop.com
+*/
+// Include the Arduino Stepper Library
+#include <Stepper.h>
+// Define Constants
+// Number of steps per output rotation
+const int STEPS_PER_REV = 200;
+const int SPEED_CONTROL = A0;
+// Create Instance of Stepper Class
+// Specify Pins used for motor coils
+// The pins used are 8,9,10,11
+// Connected to L298N Motor Driver In1, In2, In3, In4
+// Pins entered in sequence 1-2-3-4 for proper step sequencing
+Stepper stepper_NEMA17(STEPS_PER_REV, 8, 9, 10, 11);
+void setup() {
+  // nothing to do inside the setup
+}
+void loop() {
+  // read the sensor value:
+  int sensorReading = analogRead(SPEED_CONTROL);
+  // map it to a range from 0 to 100:
+  int motorSpeed = map(sensorReading, 0, 1023, 0, 100);
+  // set the motor speed:
+  if (motorSpeed > 0) {
+    stepper_NEMA17.setSpeed(motorSpeed);
+    // step 1/100 of a revolution:
+    stepper_NEMA17.step(STEPS_PER_REV / 100);
+  }
+}
 </code>

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