#include <SPI.h>
#include <Wire.h>
#include <Adafruit_GFX.h>
#include <Adafruit_SSD1306.h>
#define SCREEN_WIDTH 128 // OLED display width, in pixels
#define SCREEN_HEIGHT 64 // OLED display height, in pixels
// Declaration for an SSD1306 display connected to I2C (SDA, SCL pins)
// The pins for I2C are defined by the Wire-library.
// On an arduino UNO: A4(SDA), A5(SCL)
// On an arduino MEGA 2560: 20(SDA), 21(SCL)
// On an arduino LEONARDO: 2(SDA), 3(SCL), ...
#define OLED_RESET -1 // Reset pin # (or -1 if sharing Arduino reset pin)
#define SCREEN_ADDRESS 0x3C ///< See datasheet for Address; 0x3D for 128x64, 0x3C for 128x32
Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET);
//Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &SPI);
//uint8_t w, uint8_t h, SPIClass *spi_ptr,
// int8_t dc_pin, int8_t rst_pin, int8_t cs_pin,
// uint32_t bitrate)
//reference state
int ref_eye_height = 40;
int ref_eye_width = 40;
int ref_space_between_eye = 10;
int ref_corner_radius = 10;
//current state of the eyes
int left_eye_height = ref_eye_height;
int left_eye_width = ref_eye_width;
int left_eye_x = 32;
int left_eye_y = 32;
int right_eye_x = 32 + ref_eye_width + ref_space_between_eye;
int right_eye_y = 32;
int right_eye_height = ref_eye_height;
int right_eye_width = ref_eye_width;
void draw_eyes(bool update = true) {
display.clearDisplay();
//draw from center
int x = int(left_eye_x - left_eye_width / 2);
int y = int(left_eye_y - left_eye_height / 2);
display.fillRoundRect(x, y, left_eye_width, left_eye_height, ref_corner_radius, SSD1306_WHITE);
x = int(right_eye_x - right_eye_width / 2);
y = int(right_eye_y - right_eye_height / 2);
display.fillRoundRect(x, y, right_eye_width, right_eye_height, ref_corner_radius, SSD1306_WHITE);
if (update) {
display.display();
}
}
void center_eyes(bool update = true) {
//move eyes to the center of the display, defined by SCREEN_WIDTH, SCREEN_HEIGHT
left_eye_height = ref_eye_height;
left_eye_width = ref_eye_width;
right_eye_height = ref_eye_height;
right_eye_width = ref_eye_width;
left_eye_x = SCREEN_WIDTH / 2 - ref_eye_width / 2 - ref_space_between_eye / 2;
left_eye_y = SCREEN_HEIGHT / 2;
right_eye_x = SCREEN_WIDTH / 2 + ref_eye_width / 2 + ref_space_between_eye / 2;
right_eye_y = SCREEN_HEIGHT / 2;
draw_eyes(update);
}
void blink(int speed = 12) {
draw_eyes();
for (int i = 0; i < 3; i++) {
left_eye_height = left_eye_height - speed;
right_eye_height = right_eye_height - speed;
draw_eyes();
delay(1);
}
for (int i = 0; i < 3; i++) {
left_eye_height = left_eye_height + speed;
right_eye_height = right_eye_height + speed;
draw_eyes();
delay(1);
}
}
void sleep() {
left_eye_height = 2;
right_eye_height = 2;
draw_eyes(true);
}
void wakeup() {
sleep();
for (int h = 0; h <= ref_eye_height; h += 2) {
left_eye_height = h;
right_eye_height = h;
draw_eyes(true);
}
}
void happy_eye() {
center_eyes(false);
//draw inverted triangle over eye lower part
int offset = ref_eye_height / 2;
for (int i = 0; i < 10; i++) {
display.fillTriangle(left_eye_x - left_eye_width / 2 - 1, left_eye_y + offset, left_eye_x + left_eye_width / 2 + 1, left_eye_y + 5 + offset, left_eye_x - left_eye_width / 2 - 1, left_eye_y + left_eye_height + offset, SSD1306_BLACK);
//display.fillRect(left_eye_x-left_eye_width/2-1, left_eye_y+5, left_eye_width+1, 20,SSD1306_BLACK);
display.fillTriangle(right_eye_x + right_eye_width / 2 + 1, right_eye_y + offset, right_eye_x - left_eye_width / 2 - 1, right_eye_y + 5 + offset, right_eye_x + right_eye_width / 2 + 1, right_eye_y + right_eye_height + offset, SSD1306_BLACK);
//display.fillRect(right_eye_x-right_eye_width/2-1, right_eye_y+5, right_eye_width+1, 20,SSD1306_BLACK);
offset -= 2;
display.display();
delay(1);
}
display.display();
delay(1000);
}
void saccade(int direction_x, int direction_y) {
//quick movement of the eye, no size change. stay at position after movement, will not move back, call again with opposite direction
//direction == -1 : move left
//direction == 1 : move right
int direction_x_movement_amplitude = 8;
int direction_y_movement_amplitude = 6;
int blink_amplitude = 8;
for (int i = 0; i < 1; i++) {
left_eye_x += direction_x_movement_amplitude * direction_x;
right_eye_x += direction_x_movement_amplitude * direction_x;
left_eye_y += direction_y_movement_amplitude * direction_y;
right_eye_y += direction_y_movement_amplitude * direction_y;
right_eye_height -= blink_amplitude;
left_eye_height -= blink_amplitude;
draw_eyes();
delay(1);
}
for (int i = 0; i < 1; i++) {
left_eye_x += direction_x_movement_amplitude * direction_x;
right_eye_x += direction_x_movement_amplitude * direction_x;
left_eye_y += direction_y_movement_amplitude * direction_y;
right_eye_y += direction_y_movement_amplitude * direction_y;
right_eye_height += blink_amplitude;
left_eye_height += blink_amplitude;
draw_eyes();
delay(1);
}
}
void move_right_big_eye() {
move_big_eye(1);
}
void move_left_big_eye() {
move_big_eye(-1);
}
void move_big_eye(int direction) {
//direction == -1 : move left
//direction == 1 : move right
int direction_oversize = 1;
int direction_movement_amplitude = 2;
int blink_amplitude = 5;
for (int i = 0; i < 3; i++) {
left_eye_x += direction_movement_amplitude * direction;
right_eye_x += direction_movement_amplitude * direction;
right_eye_height -= blink_amplitude;
left_eye_height -= blink_amplitude;
if (direction > 0) {
right_eye_height += direction_oversize;
right_eye_width += direction_oversize;
} else {
left_eye_height += direction_oversize;
left_eye_width += direction_oversize;
}
draw_eyes();
delay(1);
}
for (int i = 0; i < 3; i++) {
left_eye_x += direction_movement_amplitude * direction;
right_eye_x += direction_movement_amplitude * direction;
right_eye_height += blink_amplitude;
left_eye_height += blink_amplitude;
if (direction > 0) {
right_eye_height += direction_oversize;
right_eye_width += direction_oversize;
} else {
left_eye_height += direction_oversize;
left_eye_width += direction_oversize;
}
draw_eyes();
delay(1);
}
delay(1000);
for (int i = 0; i < 3; i++) {
left_eye_x -= direction_movement_amplitude * direction;
right_eye_x -= direction_movement_amplitude * direction;
right_eye_height -= blink_amplitude;
left_eye_height -= blink_amplitude;
if (direction > 0) {
right_eye_height -= direction_oversize;
right_eye_width -= direction_oversize;
} else {
left_eye_height -= direction_oversize;
left_eye_width -= direction_oversize;
}
draw_eyes();
delay(1);
}
for (int i = 0; i < 3; i++) {
left_eye_x -= direction_movement_amplitude * direction;
right_eye_x -= direction_movement_amplitude * direction;
right_eye_height += blink_amplitude;
left_eye_height += blink_amplitude;
if (direction > 0) {
right_eye_height -= direction_oversize;
right_eye_width -= direction_oversize;
} else {
left_eye_height -= direction_oversize;
left_eye_width -= direction_oversize;
}
draw_eyes();
delay(1);
}
center_eyes();
}
void setup() {
// put your setup code here, to run once:
// SSD1306_SWITCHCAPVCC = generate display voltage from 3.3V internally
display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS);
//for usb communication
Serial.begin(115200);
// Show initial display buffer contents on the screen --
// the library initializes this with an Adafruit splash screen.
// Clear the buffer
display.clearDisplay();
display.setTextSize(1); // Normal 1:1 pixel scale
display.setTextColor(SSD1306_WHITE); // Draw white text
display.setCursor(0, 0); // Start at top-left corner
display.println(F("Intellar.ca"));
display.display();
delay(300);
sleep();
// Draw a single pixel in white
//display.drawPixel(10, 10, SSD1306_WHITE);
}
void loop() {
// put your main code here, to run repeatedly:
//send A0 - A5 for animation 0 to 5
if (Serial.available()) {
String data = Serial.readString();
data.trim();
char cmd = data[0];
if (cmd == 'A') {
String arg = data.substring(1, data.length());
int anim = arg.toInt();
Serial.print(cmd);
Serial.print(arg);
switch (anim) {
case 0:
wakeup();
break;
case 1:
center_eyes(true);
break;
case 2:
move_right_big_eye();
break;
case 3:
move_left_big_eye();
break;
case 4:
blink(10);
break;
case 5:
blink(20);
break;
case 6:
happy_eye();
break;
case 7:
sleep();
break;
case 8:
int dir_x = random(-1, 2);
int dir_y = random(-1, 2);
saccade(dir_x, dir_y);
delay(300);
saccade(-dir_x, -dir_y);
delay(300);
break;
}
}
}
}