lcd

Author: BrettMayson

2025/lcd_gaming.ino

@@ -0,0 +1,107 @@
+#include <Wire.h>
+#include <LiquidCrystal_I2C.h>
+
+#define SDA 13
+#define SCL 14
+
+LiquidCrystal_I2C lcd(0x27, 16, 2);
+
+// Custom characters
+byte fullBlock[8] = {
+  0b11111,
+  0b11111,
+  0b11111,
+  0b11111,
+  0b11111,
+  0b11111,
+  0b11111,
+  0b11111
+};
+
+byte topHalf[8] = {
+  0b11111,
+  0b11111,
+  0b11111,
+  0b11111,
+  0b00000,
+  0b00000,
+  0b00000,
+  0b00000
+};
+
+byte bottomHalf[8] = {
+  0b00000,
+  0b00000,
+  0b00000,
+  0b00000,
+  0b11111,
+  0b11111,
+  0b11111,
+  0b11111
+};
+
+byte emptyBlock[8] = {
+  0b00000,
+  0b00000,
+  0b00000,
+  0b00000,
+  0b00000,
+  0b00000,
+  0b00000,
+  0b00000
+};
+
+int blockX = 0;   // 0–15
+int blockY = 0;   // 0–3 (virtual rows)
+
+void setup() {
+  Wire.begin(SDA, SCL);
+  lcd.init();
+  lcd.backlight();
+
+  // Load custom characters (indexes 0–3)
+  lcd.createChar(0, fullBlock);
+  lcd.createChar(1, topHalf);
+  lcd.createChar(2, bottomHalf);
+  lcd.createChar(3, emptyBlock);
+
+  Serial.begin(9600);
+  Serial.println("Use w/a/s/d to move block");
+
+  drawBlock();
+}
+
+void loop() {
+  if (Serial.available()) {
+    char cmd = Serial.read();
+
+    // Clear current block
+    drawAt(blockX, blockY, 3); // draw empty
+
+    // Update position
+    if (cmd == 'a' && blockX > 0) blockX--;
+    if (cmd == 'd' && blockX < 15) blockX++;
+    if (cmd == 'w' && blockY > 0) blockY--;
+    if (cmd == 's' && blockY < 3) blockY++;
+
+    drawBlock();
+  }
+}
+
+// Draw a block at current position
+void drawBlock() {
+  drawAt(blockX, blockY, getCharForRow(blockY));
+}
+
+// Determine char to draw for virtual row
+byte getCharForRow(int row) {
+  if (row % 2 == 0) return 1; // top half
+  else return 2;              // bottom half
+}
+
+// Place a custom char at virtual row
+void drawAt(int x, int vRow, byte charIndex) {
+  int lcdRow = vRow / 2;
+  lcd.setCursor(x, lcdRow);
+  lcd.write(charIndex);
+}

2025/links.html

@@ -133,6 +133,10 @@ <h2>🖼️ Projects</h2>
                 <a href="breakout.sb3" target="_blank">Scratch Breakout</a>
                 <div class="description">The breakout game made during camp</div>
             </div>
+            <div class="link-item">
+                <a href="lcd_gaming.ino" target="_blank">LCD Gaming</a>
+                <div class="description">Gaming on the LCD</div>
+            </div>
         </div>
 
         <div class="link-section">