MartinRGB · November 14, 2023 17:32 · Nov 14, 2023 · Nov 14, 2023 · Nov 14, 2023 · Nov 14, 2023
diff --git a/Arduino_Transparent_SSD1309.md b/Arduino_Transparent_SSD1309.md
@@ -2,6 +2,8 @@ reference:
 
 https://github.com/tobozo/Rotatey_Cube
 
+https://wokwi.com/projects/328271658006610514
+
 <img src="https://user-images.githubusercontent.com/7036706/282833351-27e119e3-0f98-4abf-b7ca-baa0424422a5.jpg" width="50%" height="50%"/>
 
 ```c

diff --git a/Arduino_Transparent_SSD1309.md b/Arduino_Transparent_SSD1309.md
@@ -2,6 +2,8 @@ reference:
 
 https://github.com/tobozo/Rotatey_Cube
 
+<img src="https://user-images.githubusercontent.com/7036706/282833351-27e119e3-0f98-4abf-b7ca-baa0424422a5.jpg" width="50%" height="50%"/>
+
 ```c
 // simple project with rotating 3D cube using Arduino UNO and Transparent 128x64 OLED Display, 
 // created by upir, 2022

diff --git a/Arduino_Transparent_SSD1309.md b/Arduino_Transparent_SSD1309.md
@@ -1,3 +1,7 @@
+reference:
+
+https://github.com/tobozo/Rotatey_Cube
+
 ```c
 // simple project with rotating 3D cube using Arduino UNO and Transparent 128x64 OLED Display, 
 // created by upir, 2022

diff --git a/Transparent_SSD1309.md → Arduino_Transparent_SSD1309.md b/Transparent_SSD1309.md → Arduino_Transparent_SSD1309.md
diff --git a/Transparent_SSD1309.md b/Transparent_SSD1309.md
@@ -0,0 +1,137 @@
+```c
+// simple project with rotating 3D cube using Arduino UNO and Transparent 128x64 OLED Display, 
+// created by upir, 2022
+// youtube channel: https://www.youtube.com/upir_upir
+// full tutoral is here: https://youtu.be/kBAcaA7NAlA
+
+// Turbo pressure gauge tutorial: https://youtu.be/JXmw1xOlBdk
+// Transparent OLED tutorial: https://youtu.be/hIFDcksXgBk
+// Knob + OLED tutorial: https://youtu.be/NPfaLKKsf_Q
+
+// useful links:
+// u8g documentation: https://github.com/olikraus/u8glib/wiki/userreference
+// Wokwi starting project: https://wokwi.com/arduino/projects/300867986768527882
+// Arduino UNO: http://store.arduino.cc/products/arduino-uno-rev3
+// Arduino UNO MINI: https://store.arduino.cc/products/uno-mini-le
+// Multidimensional arrays: https://www.tutorialspoint.com/arduino/arduino_multi_dimensional_arrays.htm
+// 2D Rotation: https://en.wikipedia.org/wiki/Rotation_(mathematics)
+// Normal OLED Display: https://www.aliexpress.com/item/4001051535838.html
+// Transparent OLED Display: https://a.aliexpress.com/_mKGmhKg
+// Big OLED Display: https://www.aliexpress.com/item/1005003091769556.html
+// Arduino breadboard prototyping shield: https://www.adafruit.com/product/2077
+
+
+
+#include "U8glib.h" // u8g library, note there is a newer version u8g2, please use the older one
+
+// uncomment the correct connection - fast I2C, slow I2C, SPI
+U8GLIB_SSD1309_128X64 u8g( 13, 11, 10, 9, 8 );
+//U8GLIB_SSD1306_128X64 u8g(U8G_I2C_OPT_DEV_0 | U8G_I2C_OPT_NO_ACK); // slow I2C / TWI     -- I had to use "slow I2C" in my case
+//U8GLIB_SSD1306_128X64 u8g(13, 11, 8, 9, 10); // SPI connection  - SCL = 13, SDA = 11, RES = 10, DC = 9, CS = 8
+
+int points[8][2]; // eight 2D points for the cube, values will be calculated in the code
+
+int orig_points [8][3] = {  // eight 3D points - set values for 3D cube
+  {-1,-1, 1},
+  {1,-1,1},
+  {1,1,1},
+  {-1,1,1},
+  {-1,-1,-1},
+  {1,-1,-1},
+  {1,1,-1},
+  {-1,1,-1}
+};
+
+float rotated_3d_points [8][3];   // eight 3D points - rotated around Y axis
+float angle_deg = 60.0;           // rotation around the Y axis
+float z_offset = -6.0;            // offset on Z axis
+float cube_size = 70.0;           // cube size (multiplier)
+float time_frame;                 // ever increasing time value
+
+long fps = 0;
+long lastMillis = 0;
+
+void setup() {
+  Serial.begin(115200);
+  u8g.setColorIndex(1); // set color to white
+  lastMillis = millis();
+}
+
+void loop() {
+
+  time_frame++;                                // increase the time frame value by 1
+  //cube_size = 50 + sin(time_frame * 0.2)*20;   // oscilate cube size between values 30 - 70
+
+  //z_offset =  -2.0;    // 
+  //cube_size = 18.0;    // uncomment those two lines for a "wide angle camera" -- bigger perspective distort
+
+  // increase the angle by 5° increments
+  if (angle_deg < 90-5) {
+    angle_deg = angle_deg + 5;
+  } else {
+    angle_deg = 0;
+  }
+
+
+  // calculate the points
+  for (int i=0; i<8; i++) {
+    // rotate 3d points around the Y axis (rotating X nad Z positions)
+    // rotated_3d_points [i][0] = orig_points [i][0] * cos(radians(angle_deg)) - orig_points [i][2] * sin(radians(angle_deg));
+    // rotated_3d_points [i][1] = orig_points [i][1];
+    // rotated_3d_points [i][2] = orig_points [i][0] * sin(radians(angle_deg)) + orig_points [i][2] * cos(radians(angle_deg)) + z_offset;
+
+    // rotate 3d points around the X axis (rotating Y nad Z positions)
+    //rotated_3d_points [i][0] = orig_points [i][1];
+    //rotated_3d_points [i][1] = orig_points [i][0] * cos(radians(angle_deg)) - orig_points [i][2] * sin(radians(angle_deg));
+    //rotated_3d_points [i][2] = orig_points [i][0] * sin(radians(angle_deg)) + orig_points [i][2] * cos(radians(angle_deg)) + z_offset;
+
+    // rotate 3d points around the Z axis (rotating Y nad X positions)
+    //rotated_3d_points [i][0] = orig_points [i][0] * cos(radians(angle_deg)) - orig_points [i][2] * sin(radians(angle_deg));
+    //rotated_3d_points [i][1] = orig_points [i][0] * sin(radians(angle_deg)) + orig_points [i][2] * cos(radians(angle_deg));
+    //rotated_3d_points [i][2] = orig_points [i][1] + z_offset;  
+
+    // Orig Box
+    //rotated_3d_points [i][0] = orig_points [i][0] ;
+    //rotated_3d_points [i][1] = orig_points [i][1] ;
+    //rotated_3d_points [i][2] = orig_points [i][2] + z_offset;  
+
+    points[i][0] = round(64 + rotated_3d_points [i][0] / rotated_3d_points [i][2] * cube_size);
+    points[i][1] = round(32 + rotated_3d_points [i][1] / rotated_3d_points [i][2] * cube_size); 
+
+  }
+
+
+  lastMillis = millis() - lastMillis;
+
+  u8g.setHiColorByRGB(255,255,255);
+  u8g.setFont(u8g_font_5x8);
+
+  u8g.firstPage();
+  do {
+      // connect the lines between the individual points
+
+
+      u8g.drawLine(points[ 0 ][ 0 ], points[ 0 ][ 1 ] , points[ 1 ][ 0 ] , points[ 1 ][ 1 ] );  // connect points 0-1
+      u8g.drawLine(points[ 1 ][ 0 ], points[ 1 ][ 1 ] , points[ 2 ][ 0 ] , points[ 2 ][ 1 ] );  // connect points 1-2  
+      u8g.drawLine(points[ 2 ][ 0 ], points[ 2 ][ 1 ] , points[ 3 ][ 0 ] , points[ 3 ][ 1 ] );  // connect points 2-3      
+      u8g.drawLine(points[ 3 ][ 0 ], points[ 3 ][ 1 ] , points[ 0 ][ 0 ] , points[ 0 ][ 1 ] );  // connect points 3-0      
+
+      u8g.drawLine(points[ 4 ][ 0 ], points[ 4 ][ 1 ] , points[ 5 ][ 0 ] , points[ 5 ][ 1 ] );  // connect points 4-5
+      u8g.drawLine(points[ 5 ][ 0 ], points[ 5 ][ 1 ] , points[ 6 ][ 0 ] , points[ 6 ][ 1 ] );  // connect points 5-6  
+      u8g.drawLine(points[ 6 ][ 0 ], points[ 6 ][ 1 ] , points[ 7 ][ 0 ] , points[ 7 ][ 1 ] );  // connect points 6-7      
+      u8g.drawLine(points[ 7 ][ 0 ], points[ 7 ][ 1 ] , points[ 4 ][ 0 ] , points[ 4 ][ 1 ] );  // connect points 7-4  
+
+      u8g.drawLine(points[ 0 ][ 0 ], points[ 0 ][ 1 ] , points[ 4 ][ 0 ] , points[ 4 ][ 1 ] );  // connect points 0-4
+      u8g.drawLine(points[ 1 ][ 0 ], points[ 1 ][ 1 ] , points[ 5 ][ 0 ] , points[ 5 ][ 1 ] );  // connect points 1-5  
+      u8g.drawLine(points[ 2 ][ 0 ], points[ 2 ][ 1 ] , points[ 6 ][ 0 ] , points[ 6 ][ 1 ] );  // connect points 2-6      
+      u8g.drawLine(points[ 3 ][ 0 ], points[ 3 ][ 1 ] , points[ 7 ][ 0 ] , points[ 7 ][ 1 ] );  // connect points 3-7                 
+
+      
+      u8g.drawStr(36,9,"MPU6050 CUBE");
+      
+
+  } while ( u8g.nextPage() );   // u8g library specific, has to be there
+
+
+}
+```