# Lego Gameboy mit Funktion # Einleitung # Die Komponenten Beschreibung: Was wird alles benötigt
**Name****Funktion****Shop URL****Bild****Anzahl**
Lego GameboyDas Gehäuse[Gameboy Shop URL](https://www.lego.com/de-de/product/game-boy-72046?age-gate=grown_up) 1
KupferdrahtVerbindungen für die Buttons, Soundchip, NFC, und Potis[Amazon Shop](https://www.amazon.de/dp/B0F6Y1HVM9?ref=fed_asin_title) [![image.png](https://wiki.hacker-net.de/uploads/images/gallery/2025-10/scaled-1680-/AXv1vvwLs0gwV1Xv-image.png)](https://wiki.hacker-net.de/uploads/images/gallery/2025-10/AXv1vvwLs0gwV1Xv-image.png) 1
Waveshare 2inch ESP32-S3 Display Development Board, 240x320Display mit SD Card Bat und ESP32 mit GPIO PINS[Amazon Shop](https://www.amazon.de/dp/B0DTYVBLM8?ref=fed_asin_title) [![image.png](https://wiki.hacker-net.de/uploads/images/gallery/2025-10/scaled-1680-/jfLUeaGKD6QONN2D-image.png)](https://wiki.hacker-net.de/uploads/images/gallery/2025-10/jfLUeaGKD6QONN2D-image.png) 1
Aideepen 2 Stück PN532 NFC NXP RFID-Modul V3 Kit ReaderNFC Reader[Amazon Shop](https://www.amazon.de/dp/B0B1QB4347?ref=fed_asin_title) [![image.png](https://wiki.hacker-net.de/uploads/images/gallery/2025-10/scaled-1680-/aAAXT69sg76VpE27-image.png)](https://wiki.hacker-net.de/uploads/images/gallery/2025-10/aAAXT69sg76VpE27-image.png) 1
SKULLPAPER® Wasserschiebefolie WEISS für Tintenstrahldrucker - hauchdünn DIY DecalEtiketten Papier für die Spiele Kassetten Anzahl unendlich, je nach Anzahl der Spiele[Amazon Shop](https://www.amazon.de/dp/B087PMF69V?ref=fed_asin_title) [![image.png](https://wiki.hacker-net.de/uploads/images/gallery/2025-10/scaled-1680-/bf8BtkXC0wQZABja-image.png)](https://wiki.hacker-net.de/uploads/images/gallery/2025-10/bf8BtkXC0wQZABja-image.png) ### ∞
EEMB Lithium Polymer Akku 3,7 V 1800mAh 963450 Wiederaufladbarer Lipo-Akku mit JST-Anschluss für VXI BlueAkku halt[Amazon Shop](https://www.amazon.de/dp/B095YC5PW8?ref=fed_asin_title&th=1) [![image.png](https://wiki.hacker-net.de/uploads/images/gallery/2025-10/scaled-1680-/CdNZxSJCsOAb7q2W-image.png)](https://wiki.hacker-net.de/uploads/images/gallery/2025-10/CdNZxSJCsOAb7q2W-image.png) 1
Youmile 10 Stück PJ-307 3,5 mm Stereo Audio Klinkenbuchse 5 Pin Leiterplattenmontage Buchse für Audio Kopfhöreradapter für Video/Audiogeräte mit 10 Stück 3,5 mm TRS Steckeradapte3,5 Kopfhörer Klinke mit Lautsprecher unterbrecher wenn Kopfhörer eingesteckt[Amazon Shop](https://www.amazon.de/dp/B09NXNQ9FM?ref=fed_asin_title) [![image.png](https://wiki.hacker-net.de/uploads/images/gallery/2025-10/scaled-1680-/1n3934xIqqESeS7G-image.png)](https://wiki.hacker-net.de/uploads/images/gallery/2025-10/1n3934xIqqESeS7G-image.png) 1
MAX98357 I2S 3W Klasse D Audio Verstärkermodul AYWHP 3 PCS DAC Decoder Modul Audio Board I2S DAC DecodeSound Chip[Amazon Shop](https://www.amazon.de/dp/B0F7LGZ4Z3?ref=fed_asin_title) [![image.png](https://wiki.hacker-net.de/uploads/images/gallery/2025-10/scaled-1680-/sOi4O6YWyo5VQcbr-image.png)](https://wiki.hacker-net.de/uploads/images/gallery/2025-10/sOi4O6YWyo5VQcbr-image.png) 1
Poti 13,8 cm RaddurchmesserPoti für Helligkeit und Lautstärke[Amazon Shop](https://www.amazon.de/dp/B07WFFQYF4?ref=fed_asin_title) [![image.png](https://wiki.hacker-net.de/uploads/images/gallery/2025-10/scaled-1680-/4leT2TODAesm9n6C-image.png)](https://wiki.hacker-net.de/uploads/images/gallery/2025-10/4leT2TODAesm9n6C-image.png) 2
200 Stück Miniatur-Mikro Schalter,10 Types 4 Pin Tactile Drucktaster 6x6mm Momentaner taktiler Button Switch berühren Electronic Components,für Panel PCBButtons, ne 200 Kiste ist günstiger als einer. Wir brauchen aber nur 8[Amazon Shop](https://www.amazon.de/dp/B0D7VML9QS?ref=fed_asin_title) [![image.png](https://wiki.hacker-net.de/uploads/images/gallery/2025-10/scaled-1680-/tO1oGmsAZx8G7s1e-image.png)](https://wiki.hacker-net.de/uploads/images/gallery/2025-10/tO1oGmsAZx8G7s1e-image.png) 8
Adafruit PCF8575 I2C 16 GPIO Expander Breakout, Stemma QT/Qwiic, 5611Ein I2C Expander für weitere 16 PINS[Amazon Shop](https://www.amazon.de/dp/B0BPN3BD1Q?ref=fed_asin_title) [![image.png](https://wiki.hacker-net.de/uploads/images/gallery/2025-11/scaled-1680-/PFff3UL0kEbUqchE-image.png)](https://wiki.hacker-net.de/uploads/images/gallery/2025-11/PFff3UL0kEbUqchE-image.png)
USB C BuchseUSB C Buchse[Amazon Shop](https://www.amazon.de/KUOQIY-Schnappnut-Schnalle-Typ-C-Buchse-Transparent/dp/B0CZHGWDLJ/ref=sxin_14_pa_sp_search_thematic_sspa?content-id=amzn1.sym.d0f576b8-b33f-4e73-b939-5a8e1e8f8f52%3Aamzn1.sym.d0f576b8-b33f-4e73-b939-5a8e1e8f8f52&crid=2XVRQLBWAITI&cv_ct_cx=usb%2Bbuchse%2Bmit%2Bpin&keywords=usb%2Bbuchse%2Bmit%2Bpin&pd_rd_i=B0CZHGWDLJ&pd_rd_r=7d5a2154-f867-4ead-87ab-f9705bac080e&pd_rd_w=nnk2C&pd_rd_wg=witKd&pf_rd_p=d0f576b8-b33f-4e73-b939-5a8e1e8f8f52&pf_rd_r=CP2KS6E2FS07HBS73DQD&qid=1764711324&sbo=RZvfv%2F%2FHxDF%2BO5021pAnSA%3D%3D&sprefix=usb%2Bbuchse%2Bmit%2Bpin%2Caps%2C115&sr=1-20-697816f9-1d14-47e9-bd0d-1a95e9f140b6-spons&xpid=rvcG2VLtDTmQo&aref=F9VrxMlzaz&sp_csd=d2lkZ2V0TmFtZT1zcF9zZWFyY2hfdGhlbWF0aWM&th=1) [![image.png](https://wiki.hacker-net.de/uploads/images/gallery/2025-12/scaled-1680-/UTzpybCtvuuCt83N-image.png)](https://wiki.hacker-net.de/uploads/images/gallery/2025-12/UTzpybCtvuuCt83N-image.png)
3D File für DisplayDie Datei ist selbst erstellt aus lDraw File 42205 und dem Display Case von Benutzer: [https://www.printables.com/model/1188149-enclosure-for-esp32-s3-touch-lcd-2/files](https://www.printables.com/model/1188149-enclosure-for-esp32-s3-touch-lcd-2/files)
3D File USB C Buchse[https://www.thingiverse.com/thing:6932136](https://www.thingiverse.com/thing:6932136) [![image.png](https://wiki.hacker-net.de/uploads/images/gallery/2025-12/scaled-1680-/F0crhZiKerEtirRt-image.png)](https://wiki.hacker-net.de/uploads/images/gallery/2025-12/F0crhZiKerEtirRt-image.png)
Lego Brick for Power Schalter[https://www.thingiverse.com/thing:3419081](https://www.thingiverse.com/thing:3419081) [![image.png](https://wiki.hacker-net.de/uploads/images/gallery/2025-12/scaled-1680-/7vyaCqeaOVIf4fGr-image.png)](https://wiki.hacker-net.de/uploads/images/gallery/2025-12/7vyaCqeaOVIf4fGr-image.png)
**Werkzeuge** Gameboy / NES Software
Software ProjektBeschreibungLink
ESP32 HandheldESP32 Neshttps://www.instructables.com/ESP32-Handheld-Game-Console/
NesCat ESP32Ein ESP32 NES Emualtorhttps://github.com/markoni985/NesCat
ESP32 GameboyILI9341 Display Variantehttps://github.com/lualiliu/esp32-gameboy
# Hardware zusammenbau und Testen ### Beschreibung: Zusammenbau am Steckbrett und Testsoftware. ``` ### *** DISPLAY PINS sind intern verbunden, werden hier nur für die Programmierung aufgelistet :** ``` TFT_SCLK 39 TFT_MOSI 38 TFT_MISO 40 TFT_DC 42 TFT_CS 45 TFT_RST -1 TFT_BL 1 ``` Buttons: UP: GPIO 2 → GND (mit Pullup) DOWN: GPIO 3 → GND LEFT: GPIO 4 → GND RIGHT: GPIO 5 → GND A: GPIO 6 → GND B: GPIO 7 → GND START: GPIO 8 → GND SELECT: GPIO 9 → GND ``` ### **Potis (10kΩ):** ``` POT_VOLUME: GPIO 10 (Mittelpin), GND + 3.3V POT_BRIGHT: GPIO 11 (Mittelpin), GND + 3.3V ``` ### **MAX98357A Audio:** ``` BCLK: GPIO 12 LRC: GPIO 13 DIN: GPIO 14 VIN: 5V oder 3.3V GND: GND ``` ### **PN532 NFC:** ``` SDA: GPIO 48 (shared mit Touch) SCL: GPIO 47 (shared mit Touch) ``` ### **SD Card:** ``` CS: GPIO 15 (nutzt SPI vom Display) ``` IDE installieren [Arduino IDE Download](https://www.arduino.cc/en/software/) Nachdem die IDE installiert müssen wir unser Board auswählen und ein paar Pakete installieren. Ert board auswählen [![image.png](https://wiki.hacker-net.de/uploads/images/gallery/2025-10/scaled-1680-/lIiulpWT4XUWO0WS-image.png)](https://wiki.hacker-net.de/uploads/images/gallery/2025-10/lIiulpWT4XUWO0WS-image.png) Dann werden wir gefragt ob wir das Paket für ESP32 installieren wollen, da klciken wir auf yes [![image.png](https://wiki.hacker-net.de/uploads/images/gallery/2025-10/scaled-1680-/fKaIw1P7SqaobFDO-image.png)](https://wiki.hacker-net.de/uploads/images/gallery/2025-10/fKaIw1P7SqaobFDO-image.png) Dazu klicken wir auf das Library Manager Symbol [![image.png](https://wiki.hacker-net.de/uploads/images/gallery/2025-10/scaled-1680-/dZVh3UbQmDcwROMl-image.png)](https://wiki.hacker-net.de/uploads/images/gallery/2025-10/dZVh3UbQmDcwROMl-image.png) Geben als Suchbegriff folgende namen ein und installieren diese. Hintereinander eingeben, natürlich
**Library Name****Suchbegriff****Bild**
GFX Library for Arduino\*arduino\*gfx\*[![image.png](https://wiki.hacker-net.de/uploads/images/gallery/2025-10/scaled-1680-/d17EMtu6FSHn5UjR-image.png)](https://wiki.hacker-net.de/uploads/images/gallery/2025-10/d17EMtu6FSHn5UjR-image.png)
Adafruit PN532Adafruit PN532[![image.png](https://wiki.hacker-net.de/uploads/images/gallery/2025-11/scaled-1680-/2psD2VidlBeYSAW7-image.png)](https://wiki.hacker-net.de/uploads/images/gallery/2025-11/2psD2VidlBeYSAW7-image.png)
Nun das Testprogramm einfügen Testprogramm ``` #include #include #include #include #include #include // ===== DISPLAY PINS ===== #define TFT_SCLK 39 #define TFT_MOSI 38 #define TFT_MISO 40 #define TFT_DC 42 #define TFT_CS 45 #define TFT_RST -1 #define TFT_BL 1 // ===== BUTTON PINS (mit INPUT_PULLUP) ===== #define BTN_UP 2 #define BTN_DOWN 3 #define BTN_LEFT 4 #define BTN_RIGHT 5 #define BTN_A 6 #define BTN_B 7 #define BTN_START 8 #define BTN_SELECT 9 // ===== POTENTIOMETER (ADC) ===== #define POT_VOLUME 10 // ADC für Lautstärke #define POT_BRIGHT 11 // ADC für Helligkeit // ===== I2S AUDIO (MAX98357A) ===== #define I2S_BCLK 12 #define I2S_LRC 13 #define I2S_DOUT 14 #define I2S_NUM I2S_NUM_0 // ===== NFC (PN532 auf Touch-I2C) ===== #define NFC_SDA 48 #define NFC_SCL 47 #define PN532_I2C_ADDRESS 0x24 // ===== SD CARD ===== #define SD_CS 15 // ===== DISPLAY ===== #define SCREEN_WIDTH 240 #define SCREEN_HEIGHT 320 Arduino_DataBus *bus = new Arduino_ESP32SPI(TFT_DC, TFT_CS, TFT_SCLK, TFT_MOSI, TFT_MISO); Arduino_GFX *gfx = new Arduino_ST7789(bus, TFT_RST, 0, true, SCREEN_WIDTH, SCREEN_HEIGHT); // ===== GLOBALE VARIABLEN ===== int volumePercent = 50; int brightnessPercent = 80; String nfcUID = "Waiting..."; bool sdCardOK = false; // ===== CHIPTUNE FREQUENCY TABLE ===== const int NOTE_C4 = 262; const int NOTE_D4 = 294; const int NOTE_E4 = 330; const int NOTE_F4 = 349; const int NOTE_G4 = 392; const int NOTE_A4 = 440; const int NOTE_B4 = 494; const int NOTE_C5 = 523; int melody[] = {NOTE_E4, NOTE_E4, 0, NOTE_E4, 0, NOTE_C4, NOTE_E4, 0, NOTE_G4, 0, 0, 0, NOTE_G4, 0, 0, 0}; int noteDurations[] = {200, 200, 200, 200, 200, 200, 200, 200, 200, 200, 200, 200, 200, 200, 200, 200}; int currentNote = 0; unsigned long lastNoteTime = 0; // ===== SETUP I2S AUDIO ===== void setupAudio() { i2s_config_t i2s_config = { .mode = (i2s_mode_t)(I2S_MODE_MASTER | I2S_MODE_TX), .sample_rate = 16000, .bits_per_sample = I2S_BITS_PER_SAMPLE_16BIT, .channel_format = I2S_CHANNEL_FMT_ONLY_RIGHT, .communication_format = I2S_COMM_FORMAT_I2S_MSB, .intr_alloc_flags = ESP_INTR_FLAG_LEVEL1, .dma_buf_count = 8, .dma_buf_len = 64, .use_apll = false, .tx_desc_auto_clear = true, .fixed_mclk = 0 }; i2s_pin_config_t pin_config = { .bck_io_num = I2S_BCLK, .ws_io_num = I2S_LRC, .data_out_num = I2S_DOUT, .data_in_num = I2S_PIN_NO_CHANGE }; i2s_driver_install(I2S_NUM, &i2s_config, 0, NULL); i2s_set_pin(I2S_NUM, &pin_config); Serial.println("✓ Audio initialized"); } // ===== PLAY TONE ===== void playTone(int frequency, int duration) { if (frequency == 0) { delay(duration); return; } const int sampleRate = 16000; const int samples = (sampleRate * duration) / 1000; int16_t sample; size_t bytes_written; float amplitude = (volumePercent / 100.0) * 10000; for (int i = 0; i < samples; i++) { sample = (int16_t)(amplitude * sin(2.0 * PI * frequency * i / sampleRate)); i2s_write(I2S_NUM, &sample, sizeof(sample), &bytes_written, portMAX_DELAY); } } // ===== SETUP BUTTONS ===== void setupButtons() { pinMode(BTN_UP, INPUT_PULLUP); pinMode(BTN_DOWN, INPUT_PULLUP); pinMode(BTN_LEFT, INPUT_PULLUP); pinMode(BTN_RIGHT, INPUT_PULLUP); pinMode(BTN_A, INPUT_PULLUP); pinMode(BTN_B, INPUT_PULLUP); pinMode(BTN_START, INPUT_PULLUP); pinMode(BTN_SELECT, INPUT_PULLUP); Serial.println("✓ Buttons initialized"); } // ===== SETUP POTIS ===== void setupPotis() { pinMode(POT_VOLUME, INPUT); pinMode(POT_BRIGHT, INPUT); analogSetAttenuation(ADC_11db); Serial.println("✓ Potentiometers initialized"); } // ===== SETUP NFC ===== void setupNFC() { Wire.begin(NFC_SDA, NFC_SCL); Serial.println("✓ NFC I2C initialized"); } // ===== READ NFC (vereinfacht) ===== void readNFC() { Wire.beginTransmission(PN532_I2C_ADDRESS); if (Wire.endTransmission() == 0) { nfcUID = "PN532 Found!"; } else { nfcUID = "No card..."; } } // ===== SETUP SD CARD ===== void setupSD() { pinMode(SD_CS, OUTPUT); digitalWrite(SD_CS, HIGH); if (SD.begin(SD_CS, SPI, 4000000)) { Serial.println("✓ SD Card initialized"); sdCardOK = true; testSDCard(); } else { Serial.println("❌ SD Card init failed"); sdCardOK = false; } } // ===== TEST SD CARD ===== void testSDCard() { File file = SD.open("/test.txt", FILE_WRITE); if (file) { file.println("LEGO GameBoy Hardware Test"); file.close(); Serial.println("✓ SD Write OK"); file = SD.open("/test.txt"); if (file) { String content = file.readString(); file.close(); if (content.indexOf("LEGO") >= 0) { Serial.println("✓ SD Read OK"); sdCardOK = true; } } } else { sdCardOK = false; } } // ===== DRAW BUTTON ===== void drawButton(int x, int y, int w, int h, String label, bool pressed) { uint16_t color = pressed ? RED : 0x4208; gfx->fillRoundRect(x, y, w, h, 4, color); gfx->drawRoundRect(x, y, w, h, 4, WHITE); gfx->setTextColor(WHITE); gfx->setTextSize(1); int16_t x1, y1; uint16_t tw, th; gfx->getTextBounds(label.c_str(), 0, 0, &x1, &y1, &tw, &th); gfx->setCursor(x + (w - tw) / 2, y + (h - th) / 2); gfx->print(label); } // ===== DRAW BAR ===== void drawBar(int x, int y, int w, int h, int percent, String label) { gfx->setTextColor(WHITE); gfx->setTextSize(1); gfx->setCursor(x, y - 12); gfx->print(label + ": " + String(percent) + "%"); gfx->drawRect(x, y, w, h, WHITE); int fillWidth = (w - 4) * percent / 100; gfx->fillRect(x + 2, y + 2, fillWidth, h - 4, GREEN); } // ===== DRAW UI ===== void drawUI() { gfx->fillScreen(BLACK); // Title gfx->setTextColor(CYAN); gfx->setTextSize(2); gfx->setCursor(10, 5); gfx->print("HW Test Tool"); // D-Pad bool up = !digitalRead(BTN_UP); bool down = !digitalRead(BTN_DOWN); bool left = !digitalRead(BTN_LEFT); bool right = !digitalRead(BTN_RIGHT); drawButton(40, 50, 25, 25, "^", up); // UP drawButton(40, 100, 25, 25, "v", down); // DOWN drawButton(15, 75, 25, 25, "<", left); // LEFT drawButton(65, 75, 25, 25, ">", right); // RIGHT // A, B Buttons bool a = !digitalRead(BTN_A); bool b = !digitalRead(BTN_B); drawButton(180, 75, 30, 30, "A", a); drawButton(140, 75, 30, 30, "B", b); // Start, Select bool start = !digitalRead(BTN_START); bool select = !digitalRead(BTN_SELECT); drawButton(130, 115, 45, 20, "START", start); drawButton(180, 115, 45, 20, "SEL", select); // Volume Bar drawBar(10, 150, 220, 20, volumePercent, "Volume"); // Brightness Bar drawBar(10, 185, 220, 20, brightnessPercent, "Bright"); // NFC Status gfx->setTextColor(YELLOW); gfx->setTextSize(1); gfx->setCursor(10, 220); gfx->print("NFC: " + nfcUID); // SD Card Status gfx->setCursor(10, 235); gfx->setTextColor(sdCardOK ? GREEN : RED); gfx->print("SD Card: "); gfx->print(sdCardOK ? "OK" : "FAIL"); // Music Status gfx->setTextColor(MAGENTA); gfx->setCursor(10, 250); gfx->print("Music: Playing..."); // Instructions gfx->setTextColor(WHITE); gfx->setTextSize(1); gfx->setCursor(10, 280); gfx->print("Test all buttons!"); gfx->setCursor(10, 295); gfx->print("Turn potentiometers!"); } // ===== SETUP ===== void setup() { Serial.begin(115200); delay(1000); Serial.println("\n========================================"); Serial.println(" LEGO GameBoy Hardware Test Tool"); Serial.println("========================================\n"); // Display pinMode(TFT_BL, OUTPUT); digitalWrite(TFT_BL, HIGH); gfx->begin(); gfx->invertDisplay(true); gfx->fillScreen(BLACK); Serial.println("✓ Display initialized"); // Hardware Init setupButtons(); setupPotis(); setupAudio(); setupNFC(); setupSD(); Serial.println("\n========================================"); Serial.println(" All systems ready!"); Serial.println("========================================\n"); drawUI(); } // ===== MAIN LOOP ===== void loop() { // Read Potentiometers int volRaw = analogRead(POT_VOLUME); int brightRaw = analogRead(POT_BRIGHT); volumePercent = map(volRaw, 0, 4095, 0, 100); brightnessPercent = map(brightRaw, 0, 4095, 0, 100); // Set Brightness int blValue = map(brightnessPercent, 0, 100, 0, 255); analogWrite(TFT_BL, blValue); // Read NFC every 2 seconds static unsigned long lastNFCRead = 0; if (millis() - lastNFCRead > 2000) { readNFC(); lastNFCRead = millis(); } // Play Chiptune if (millis() - lastNoteTime > noteDurations[currentNote]) { if (melody[currentNote] > 0) { playTone(melody[currentNote], noteDurations[currentNote]); } currentNote = (currentNote + 1) % 16; lastNoteTime = millis(); } // Update Display every 100ms static unsigned long lastUpdate = 0; if (millis() - lastUpdate > 100) { drawUI(); lastUpdate = millis(); } } ``` Danach auf den Haken zum Überpüfen klicken. [![image.png](https://wiki.hacker-net.de/uploads/images/gallery/2025-10/scaled-1680-/7MnGhUKIT82XJMdy-image.png)](https://wiki.hacker-net.de/uploads/images/gallery/2025-10/7MnGhUKIT82XJMdy-image.png) Nun kompiliert er [![image.png](https://wiki.hacker-net.de/uploads/images/gallery/2025-10/scaled-1680-/XyXvtvQ18JSbHWiI-image.png)](https://wiki.hacker-net.de/uploads/images/gallery/2025-10/XyXvtvQ18JSbHWiI-image.png) Wenn fertig steht in der Ausgabe wie viel Speicher benutzt wird. ``` Der Sketch verwendet 483199 Bytes (36%) des Programmspeicherplatzes. Das Maximum sind 1310720 Bytes. Globale Variablen verwenden 22984 Bytes (7%) des dynamischen Speichers, 304696 Bytes für lokale Variablen verbleiben. Das Maximum sind 327680 Bytes. ``` Nun können wir das auf den ESP32 hochladen mit dem Pfeil nach recht Button [![image.png](https://wiki.hacker-net.de/uploads/images/gallery/2025-10/scaled-1680-/8dSqyGJFPFX96eWm-image.png)](https://wiki.hacker-net.de/uploads/images/gallery/2025-10/8dSqyGJFPFX96eWm-image.png)