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"orange", [ "v-37.2", "h316.8" ] ], [ "sr26:Q7S", "sr2:DS", "#8f4814", [ "h0", "v10.8", "h38.4", "v-547.2", "h48" ] ], [ "sr1:Q7S", "sr3:DS", "#8f4814", [ "h0", "v-27.6", "h259.2" ] ], [ "sr27:MR", "sr27:VCC", "red", [ "v10.8", "h-57.6" ] ], [ "sr10:VCC", "sr27:VCC", "red", [ "v-8.4", "h-9.6", "v67.2", "h9.6" ] ], [ "sr28:MR", "sr28:VCC", "red", [ "v10.8", "h-57.6" ] ], [ "sr10:STCP", "sr27:STCP", "blue", [ "v-18", "h48", "v67.2", "h-48" ] ], [ "sr27:SHCP", "sr10:SHCP", "orange", [ "v-8.4", "h48", "v-67.2", "h-48" ] ], [ "sr10:OE", "sr27:OE", "black", [ "v-18", "h-48", "v67.2", "h48" ] ], [ "sr10:Q7S", "sr27:DS", "#8f4814", [ "h0", "v10.8", "h9.6", "v28.8", "h-57.6" ] ], [ "sr18:VCC", "sr28:VCC", "red", [ "v-8.4", "h-9.6", "v67.2", "h9.6" ] ], [ "sr18:STCP", "sr28:STCP", "blue", [ "v-18", "h48", "v67.2", "h-48" ] ], [ "sr18:SHCP", "sr28:SHCP", "orange", [ "v-8.4", "h48", "v67.2", "h-48" ] ], [ "sr18:Q7S", "sr28:DS", "#8f4814", [ "h0", "v10.8", "h9.6", "v28.8", "h-57.6" ] ], [ 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"#8f4814", [ "v-18", "h-48", "v566.4", "h-38.4" ] ] ], "dependencies": {} }53:T1705,/* ESP32-S3 + 74HC595 Chain Control (28 Shift Registers, 224 Relays) + Keypad Control (A,B,C,D Features added) + OLED Status Display */ #include #include #include #include // --- Config: Shift Registers --- #define DATA_PIN 12 #define CLOCK_PIN 13 #define LATCH_PIN 14 #define NUM_SHIFT_REGISTERS 28 #define NUM_LEDS (NUM_SHIFT_REGISTERS * 8) // --- Config: OLED Display --- #define SCREEN_WIDTH 128 #define SCREEN_HEIGHT 64 #define OLED_RESET -1 #define SCREEN_ADDRESS 0x3C #define OLED_SDA 8 #define OLED_SCL 9 Adafruit_SSD1306 display(SCREEN_WIDTH, SCREEN_HEIGHT, &Wire, OLED_RESET); // --- Config: Keypad --- const byte ROWS = 4; const byte COLS = 4; char keys[ROWS][COLS] = { {'1','2','3','A'}, {'4','5','6','B'}, {'7','8','9','C'}, {'*','0','#','D'} }; byte rowPins[ROWS] = {4, 5, 6, 7}; byte colPins[COLS] = {15, 16, 17, 18}; Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS ); // --- Global Variables --- byte relayStates[NUM_SHIFT_REGISTERS]; String inputBuffer = ""; void setup() { Serial.begin(115200); // 1. Initialize Shift Register Pins pinMode(LATCH_PIN, OUTPUT); pinMode(CLOCK_PIN, OUTPUT); pinMode(DATA_PIN, OUTPUT); // Clear all LEDs initially setAllRelays(false); // 2. Initialize OLED Wire.begin(OLED_SDA, OLED_SCL); if(!display.begin(SSD1306_SWITCHCAPVCC, SCREEN_ADDRESS)) { Serial.println(F("SSD1306 allocation failed")); for(;;); } display.clearDisplay(); display.setTextColor(SSD1306_WHITE); // Show Startup Screen updateDisplay("Ready", "Type ID#"); } void loop() { char key = keypad.getKey(); if (key) { handleKeypress(key); } } // --- Logic: Keypad Handling --- void handleKeypress(char key) { // If user types a number (0-9) if (key >= '0' && key <= '9') { if (inputBuffer.length() < 3) { inputBuffer += key; } updateStatusScreen(); } // If user presses '*' -> Clear Input else if (key == '*') { inputBuffer = ""; updateDisplay("Cleared", "Type ID#"); } // If user presses '#' -> Toggle the specific Relay ID else if (key == '#') { if (inputBuffer.length() > 0) { int id = inputBuffer.toInt(); toggleRelay(id); inputBuffer = ""; } } // --- NEW FEATURES --- else if (key == 'A') { inputBuffer = ""; updateDisplay("Action:", "All OFF"); setAllRelays(false); // Turn all OFF } else if (key == 'B') { inputBuffer = ""; updateDisplay("Action:", "Sequence..."); runSequence(); // Run sequential chaser } else if (key == 'C') { inputBuffer = ""; updateDisplay("Action:", "Flashing!"); flashAllRelays(); // Flash 3 times } else if (key == 'D') { inputBuffer = ""; updateDisplay("Action:", "All ON"); setAllRelays(true); // Turn all ON } } // --- Logic: Special Functions --- // Helper to set ALL relays ON or OFF at once void setAllRelays(bool state) { byte fillValue = state ? 0xFF : 0x00; // 0xFF is 11111111, 0x00 is 00000000 for (int i = 0; i < NUM_SHIFT_REGISTERS; i++) { relayStates[i] = fillValue; } updateShiftRegisters(); } // Keypad B: Run relays sequentially (Chaser effect) void runSequence() { // Ensure everything is off first setAllRelays(false); for (int i = 0; i < NUM_LEDS; i++) { // Check if user wants to abort sequence by pressing '*' char key = keypad.getKey(); if (key == '*') { updateDisplay("Stopped", "Ready"); setAllRelays(false); return; } setRelay(i, true); updateShiftRegisters(); delay(30); // Speed of the sequence (adjust as needed) setRelay(i, false); // Turn it off to create a "moving dot" effect // Note: Remove the line above if you want them to "fill up" instead of "chase" } // Ensure last one is off updateShiftRegisters(); updateDisplay("Done", "Ready"); } // Keypad C: Flash all relays 3 times void flashAllRelays() { for(int k=0; k<3; k++) { setAllRelays(true); delay(200); setAllRelays(false); delay(200); } updateDisplay("Done", "Ready"); } // --- Logic: Relay Control --- // Toggle a specific relay ID void toggleRelay(int relayId) { if (relayId < 0 || relayId >= NUM_LEDS) { updateDisplay("Error", "Invalid ID"); return; } int registerIndex = relayId / 8; int bitIndex = relayId % 8; bool isOne = (relayStates[registerIndex] & (1 << bitIndex)); setRelay(relayId, !isOne); updateShiftRegisters(); String statusMsg = "Relay " + String(relayId); String stateMsg = !isOne ? "ON" : "OFF"; updateDisplay(statusMsg, stateMsg); } // Basic set relay function (updates array only) void setRelay(int ledId, bool state) { if (ledId < 0 || ledId >= NUM_LEDS) return; int registerIndex = ledId / 8; int bitIndex = ledId % 8; if (state) { relayStates[registerIndex] |= (1 << bitIndex); } else { relayStates[registerIndex] &= ~(1 << bitIndex); } } // Push data to chips void updateShiftRegisters() { digitalWrite(LATCH_PIN, LOW); for (int i = NUM_SHIFT_REGISTERS - 1; i >= 0; i--) { shiftOut(DATA_PIN, CLOCK_PIN, MSBFIRST, relayStates[i]); } digitalWrite(LATCH_PIN, HIGH); } // --- Logic: Display Helper --- void updateStatusScreen() { int id = inputBuffer.toInt(); String top = "Target: " + inputBuffer; String bottom = ""; if (id >= 0 && id < NUM_LEDS) { int registerIndex = id / 8; int bitIndex = id % 8; bool isOn = (relayStates[registerIndex] & (1 << bitIndex)); bottom = "Curr: " + String(isOn ? 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