auto_rickshaw

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#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>

// 0x1306.dev · animation: auto_rickshaw · 6 frames · 100ms
#define SCREEN_WIDTH 128
#define SCREEN_HEIGHT 64
#define OLED_RESET -1
#define SCREEN_ADDRESS 0x3C

Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);

#define FRAME_COUNT 6
#define FRAME_DELAY 100

void drawFrame(int frame) {
  display.clearDisplay();

  int cx = 64;
  int cy = 32;

  // --- chassis ---
  display.drawLine(cx - 15, cy + 10, cx + 10, cy + 10, WHITE);
  display.drawLine(cx + 10, cy + 10, cx + 15, cy, WHITE);
  display.drawLine(cx + 15, cy, cx + 8, cy - 12, WHITE);
  display.drawLine(cx + 8, cy - 12, cx - 12, cy - 12, WHITE);
  display.drawLine(cx - 12, cy - 12, cx - 15, cy + 10, WHITE);

  // --- roof and window ---
  display.fillRect(cx - 15, cy - 12, 23, 2, WHITE);
  display.drawLine(cx - 10, cy - 10, cx + 5, cy - 10, WHITE);
  display.drawLine(cx + 5, cy - 10, cx + 12, cy, WHITE);
  display.drawLine(cx + 12, cy, cx + 8, cy, WHITE);
  display.drawLine(cx + 8, cy, cx + 2, cy - 8, WHITE);
  display.drawLine(cx + 2, cy - 8, cx - 10, cy - 8, WHITE);
  display.drawLine(cx - 10, cy - 8, cx - 10, cy - 10, WHITE);

  // --- wheels ---
  int driveX = cx - 10;
  int frontX = cx + 12;
  int wY = cy + 10;
  display.drawCircle(driveX, wY, 4, WHITE);
  display.drawCircle(frontX, wY, 3, WHITE);

  // --- spokes ---
  int8_t spokeAngles[] = {0, 30, 60, 90, 120, 150};
  float angle = spokeAngles[frame % 6] * (PI / 180.0);
  
  display.drawLine(driveX, wY, driveX + 4 * cos(angle), wY + 4 * sin(angle), WHITE);
  display.drawLine(driveX, wY, driveX - 4 * cos(angle), wY - 4 * sin(angle), WHITE);
  
  display.drawLine(frontX, wY, frontX + 3 * cos(angle), wY + 3 * sin(angle), WHITE);
  display.drawLine(frontX, wY, frontX - 3 * cos(angle), wY - 3 * sin(angle), WHITE);

  display.display();
}

void setup() {
  Wire.begin(21, 22); // SDA=21, SCL=22 for ESP32 DevKit // change to 0x3D if display not found
  display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS);
  display.clearDisplay();
  display.display();
}

void loop() {
  for (int i = 0; i < FRAME_COUNT; i++) {
    drawFrame(i);
    delay(FRAME_DELAY);
  }
}