From 3302abaa6616a5fcf5de81c66554117e42bb5673 Mon Sep 17 00:00:00 2001
From: Mohsen Heidari <chapanh@iran.ir>
Date: Sat, 1 Aug 2026 16:41:23 +0330
Subject: [PATCH] Stepper motor with buttons and seven segment. (it was cool)

---
 platformio.ini |   3 +-
 src/main.cpp   | 128 +++++++++++++++++++++++++++++++++++++------------
 2 files changed, 99 insertions(+), 32 deletions(-)

diff --git a/platformio.ini b/platformio.ini
index 9bc99c0..5e6f272 100755
--- a/platformio.ini
+++ b/platformio.ini
@@ -10,6 +10,7 @@
 
 [env:uno]
 platform = atmelavr
-board = uno
+# board = uno
+board = sparkfun_promicro16
 framework = arduino
 lib_deps = https://github.com/DFRobot/DFRobotDFPlayerMini
diff --git a/src/main.cpp b/src/main.cpp
index 8a0795d..8abac1e 100755
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -1,42 +1,108 @@
 #include <Arduino.h>
-#include <SoftwareSerial.h>
-#include "DFRobotDFPlayerMini.h"
 
-int music_num;
-SoftwareSerial mySoftwareSerial(10, 11); // #1
-DFRobotDFPlayerMini myDFPlayer; // #2
+// Buttons
+#define LEFT_PIN20 20
+#define RIGHT_PIN19 19
+#define SPEED_PIN18 18
+
+// Steper motor
+const int STEP_PIN5 = 5;
+const int DIR_PIN7 = 7;
+int SPEED_INDEX = 2; // by defult is 2
+
+// LEDs
+const short int LA = 2;
+const short int LB = 3;
+const short int LC = 10;
+const short int LD = 14;
+const short int LE = 15;
+const short int LF = 4;
+const short int LG = 8;
+const short int LDOT = 16;
 
 // Setup Section
 void setup() {
-	mySoftwareSerial.begin(9600);
-	Serial.begin(115200);
-	myDFPlayer.begin(mySoftwareSerial); // #3
-	myDFPlayer.volume(20);
+	// Stepper motor setup
+	pinMode(STEP_PIN5, OUTPUT);
+	pinMode(DIR_PIN7, OUTPUT);
+
+	// Seven sgement setup
+	pinMode(LA, OUTPUT);
+	pinMode(LB, OUTPUT);
+	pinMode(LC, OUTPUT);
+	pinMode(LD, OUTPUT);
+	pinMode(LE, OUTPUT);
+	pinMode(LF, OUTPUT);
+	pinMode(LG, OUTPUT);
+	pinMode(LDOT, OUTPUT);
+
+	// Buttons setup
+	pinMode(LEFT_PIN20, INPUT);
+	pinMode(RIGHT_PIN19, INPUT);
+	pinMode(SPEED_PIN18, INPUT);
 }
 
 // Loop Section
 void loop() {
-	if (Serial.available() > 0) {
-		music_num = Serial.readString().toInt(); // #4
-		if (music_num < 5 && music_num > 0) {
-			switch (music_num) {
-				case 1:
-					Serial.println("1");
-					myDFPlayer.play(1);
-					break;
-				case 2:
-					Serial.println("2");
-					myDFPlayer.play(2);
-					break;
-				case 3:
-					Serial.println("3");
-					myDFPlayer.play(3);
-					break;
-				case 4:
-					Serial.println("4");
-					myDFPlayer.play(4);
-					break;
-			}
-		}
+	long int micro_seconds[3] = {600, 1000, 5000};
+
+	// Speed section
+	if (digitalRead(SPEED_PIN18) == LOW) {
+		SPEED_INDEX--;
+		if (SPEED_INDEX < 0)
+			SPEED_INDEX = 2;
+		delay(1000);
+	}
+
+	// Display
+	switch (SPEED_INDEX) {
+	case 0:
+		digitalWrite(LA, LOW);
+		digitalWrite(LB, HIGH);
+		digitalWrite(LC, HIGH);
+		digitalWrite(LD, LOW);
+		digitalWrite(LE, LOW);
+		digitalWrite(LF, LOW);
+		digitalWrite(LG, LOW);
+		digitalWrite(LDOT, LOW);
+		break;
+	case 1:
+		digitalWrite(LA, HIGH);
+		digitalWrite(LB, HIGH);
+		digitalWrite(LC, LOW);
+		digitalWrite(LD, HIGH);
+		digitalWrite(LE, HIGH);
+		digitalWrite(LF, LOW);
+		digitalWrite(LG, HIGH);
+		digitalWrite(LDOT, LOW);
+		break;
+	case 2:
+		digitalWrite(LA, HIGH);
+		digitalWrite(LB, HIGH);
+		digitalWrite(LC, HIGH);
+		digitalWrite(LD, HIGH);
+		digitalWrite(LE, LOW);
+		digitalWrite(LF, LOW);
+		digitalWrite(LG, HIGH);
+		digitalWrite(LDOT, LOW);
+		break;
+	}
+	
+	if (digitalRead(LEFT_PIN20) == LOW) {
+		digitalWrite(DIR_PIN7, HIGH);
+
+		digitalWrite(STEP_PIN5,HIGH);
+		delayMicroseconds(micro_seconds[SPEED_INDEX]);
+		digitalWrite(STEP_PIN5,LOW);
+		delayMicroseconds(micro_seconds[SPEED_INDEX]);
+	}
+
+	if (digitalRead(RIGHT_PIN19) == LOW) {
+		digitalWrite(DIR_PIN7, LOW);
+
+		digitalWrite(STEP_PIN5,HIGH);
+		delayMicroseconds(micro_seconds[SPEED_INDEX]);
+		digitalWrite(STEP_PIN5,LOW);
+		delayMicroseconds(micro_seconds[SPEED_INDEX]);
 	}
 }