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--- pm:prj2023:iotelea:solar-tracker [2023/05/29 20:02]
stefan.radulescu01 [Bibliografie/Resurse]
+++ pm:prj2023:iotelea:solar-tracker [2023/05/30 13:21] (current)
stefan.radulescu01 [Download]
@@ Line 27: / Line 27: @@
 Lista piese:
     - Arduino Nano
-    - Senzor lumina format din 4 fotorezistori
+    - Senzor lumina format din 4 fotorezistori cu multiplexor analogic
-    - 2 motoare servo
+    - 2 motoare servo S3003
-    - Senzor curent si tensiune
+    - Senzor curent si tensiune INA219
-    - Display Nokia 5110 pentru afisare informatii
+    - Display Nokia 5110
     - Senzor IR pentru control prin telecomanda
     - LED-uri aditionale
+    - Panou solar 12V 0.4A(max)
+    - Sursa de curent separata pentru servomotoare
 </note>
@@ Line 40: / Line 42: @@
 ===== Software Design =====
+  - Senzor curent si tensiune INA219 - I2C
+  - Display 5110 - SPI (initial hardware SPI, dar cand am lipit totul pe PCB am folosit bliblioteca Adafruit, deoarece pinii erau prea distantati si imi era greu sa ii conectez)
+  - Am folosit intreruperi externe pentru senzorul de lumina inflarosie.
+  - PWM pentru servomotoare.
+  - ADC pentru a citi fotorezistorii
+**Codul sursa:**
+<code c>
+#include <SPI.h>
+#include <Adafruit_GFX.h>
+#include <Adafruit_PCD8544.h>
+#include <Wire.h>
+#include <Adafruit_INA219.h>
+#include <Arduino.h>
+#include <IRremote.h>
+#include <Servo.h>
+#define S0_PIN 8
+#define S1_PIN 9
+#define PHRES_PIN A7
+#define IR_PIN 2
+#define SCLK 3
+#define DIN 4
+#define DC 5
+#define CS 6
+#define RST 7
+#define SERVO1 11
+#define SERVO2 10
+unsigned int pos = 85;
+int movement = 0;
+Servo servoX;
+Servo servoY;
+unsigned long time, lastTime;
+bool ok = 0;
+bool MODE_AUTO = 1;
+float voltage;
+float current;
+int left_value = 0;
+int right_value = 0;
+int up_value = 0;
+int down_value = 0;
+Adafruit_INA219 ina219;
+Adafruit_PCD8544 display = Adafruit_PCD8544(SCLK, DIN, DC, CS, RST);
+void setup() {
+  Serial.begin(9600);
+  while (!Serial)
+    delay(1);
+  if (! ina219.begin()) {
+    Serial.println("Failed to find INA219 chip");
+    while (1) { delay(10); }
+  }
+  display.begin();
+  display.setContrast(25);
+  pinMode(S0_PIN, OUTPUT);
+  pinMode(S1_PIN, OUTPUT);
+  pinMode(LED_BUILTIN, OUTPUT);
+  IrReceiver.begin(IR_PIN, DISABLE_LED_FEEDBACK);
+  servoX.attach(SERVO1);
+  servoY.attach(SERVO2);
+  servoY.write(pos);
+  attachInterrupt(0, ISR_IR, RISING);
+}
+void loop() {
+  voltage = ina219.getBusVoltage_V();
+  current = ina219.getCurrent_mA();
+  printPowerInfo(voltage, current);
+  if (MODE_AUTO)
+    automaticMode();
+  else
+    manualMode();
+  delay(1000);
+}
+void automaticMode() {
+  digitalWrite(LED_BUILTIN, HIGH);
+  Serial.println("AUTO MODE");
+  readPhotoresistors();
+  printPhotoresistors();
+  if (up_value - down_value > 150) {
+    Serial.println("MOVE DOWN");
+    moveDown();
+  }
+  else if (down_value - up_value > 150) {
+    Serial.println("MOVE UP");
+    moveUp();
+  }
+  else if (left_value - right_value > 150) {
+    Serial.println("MOVE LEFT");
+    moveLeft();
+    delay(250);
+    servoStop();
+  }
+  else if (right_value - left_value > 150) {
+    Serial.println("MOVE RIGHT");
+    moveRight();
+    delay(250);
+    servoStop();
+  }
+  else Serial.println("OK!");
+}
+void ISR_IR() {
+  MODE_AUTO = 0;
+}
+void manualMode() {
+  digitalWrite(LED_BUILTIN, LOW);
+  detachInterrupt(0);
+  Serial.println("MANUAL MODE");
+  while (1) {
+    voltage = ina219.getBusVoltage_V();
+    current = ina219.getCurrent_mA();
+    printPowerInfo(voltage, current);
+    if (ok && micros() - lastTime > 150000) {
+      ok = 0;
+      servoStop();
+    }
+    if (MODE_AUTO)
+      break;
+    if (IrReceiver.decode()) {
+      IrReceiver.resume();
+      time = micros();
+      if (time - lastTime > 150000) {
+        if (IrReceiver.decodedIRData.command == 0x8) {
+            Serial.println("LEFT");
+            moveLeft();
+        } else if (IrReceiver.decodedIRData.command == 0x5A) {
+            Serial.println("RIGHT");
+            moveRight();
+        } else if (IrReceiver.decodedIRData.command == 0x18) {
+            Serial.println("UP");
+            moveUp();
+        } else if (IrReceiver.decodedIRData.command == 0x52) {
+            Serial.println("DOWN");
+            moveDown();
+        } else if (IrReceiver.decodedIRData.command == 0x45) {
+            Serial.println("AUTO");
+            MODE_AUTO = 1;
+        }
+        ok = 1;
+      }
+      lastTime = time;
+    }
+  }
+}
+void moveRight() {
+  servoX.write(100);
+}
+void moveLeft() {
+  servoX.write(80);
+}
+void servoStop() {
+  Serial.println("STOP");
+  servoX.write(95);
+  movement = 0;
+}
+void updatePos() {
+  pos += (movement * 5);
+  servoY.write(pos);
+}
+void moveUp() {
+  if (pos < 115) {
+    pos += 5;
+    servoY.write(pos);
+  }
+  Serial.println(pos);
+}
+void moveDown() {
+  if (pos > 20) {
+    pos -= 5;
+    servoY.write(pos);
+  }
+  Serial.println(pos);
+}
+void printPowerInfo(float voltage, float current) {
+  display.clearDisplay();
+  display.print("U: ");
+  display.print(voltage);
+  display.println(" V");
+  display.println();
+  display.print("I: ");
+  display.print(current);
+  display.println(" mA");
+  display.println();
+  display.print("P: ");
+  display.print(voltage * current);
+  display.println(" mW");
+  display.display();
+}
+void printPhotoresistors() {
+  Serial.print("\t");
+  Serial.println(up_value);
+  Serial.print(left_value);
+  Serial.print("\t\t");
+  Serial.println(right_value);
+  Serial.print("\t");
+  Serial.println(down_value);
+  Serial.println();
+}
+void readPhotoresistors() {
+  left_value = readLeft();
+  right_value = readRight();
+  up_value = readUp();
+  down_value = readDown();
+}
+int readLeft() {
+  digitalWrite(S0_PIN, LOW);
+  digitalWrite(S1_PIN, LOW);
+  delay(10);
+  return analogRead(PHRES_PIN);
+}
+int readDown() {
+  digitalWrite(S0_PIN, LOW);
+  digitalWrite(S1_PIN, HIGH);
+  delay(10);
+  return analogRead(PHRES_PIN);
+}
+int readUp() {
+  digitalWrite(S0_PIN, HIGH);
+  digitalWrite(S1_PIN, LOW);
+  delay(10);
+  return analogRead(PHRES_PIN);
+}
+int readRight() {
+  digitalWrite(S0_PIN, HIGH);
+  digitalWrite(S1_PIN, HIGH);
+  delay(10);
+  return analogRead(PHRES_PIN);
+}
+</code>
 ===== Rezultate Obţinute =====
-Pot aprinde un bec de 1w cu panoul fotovoltaic :D
+Pot aprinde un bec de 1w cu panoul fotovoltaic :D\\
+[[https://youtu.be/MLksCHWSzYo|Solar Tracker]]
 ===== Concluzii =====
 Pentru a putea trage concluzii despre un sistem de acest fel, este nevoie de testare pe perioada indelungata de timp (6 luni - 1 an).
 ===== Download =====
+{{:pm:prj2023:iotelea:solar_tracker.zip|}}
 ===== Jurnal =====
   *14-15.05.2023 - Testarea pieselor comandate
@@ Line 56: / Line 316: @@
   *29.05.2023 - Finalizarea software-ului
 ===== Bibliografie/Resurse =====
-Arduino Examples
+  *Arduino Examples\\
-Adafruit Library Sensor Examples (INA219, PCD8544)
+  *Adafruit Library Sensor Examples (INA219, PCD8544)\\
-Laboratoarele de intreruperi, PWM, ADC, SPI.
+  *Laboratoarele de intreruperi, PWM, ADC, SPI, I2C.\\
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