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BCM ve fiziksel pin numaralandırması, I2C, SPI, UART, PWM, I2S\u002FPCM, kesin 3,3 V lojik sınırları.","BCM GPIO eşlemesi, I2C, SPI, UART ve PCM içeren, Raspberry Pi tek kartlı bilgisayarlarında (5, 4, 3, Zero) ortak standart 40 pinli genişletme header'ı.","Bu sayfa, Raspberry Pi 5, 4B, 3B+, 3, 2, 1B+, Zero ve Zero 2 W dahil tüm modern Raspberry Pi tek kartlı bilgisayarlarında ortak olan standart 40 pinli GPIO genişletme header'ını (J8 header) belgeler. Sensörler, genişletme modülleri ve resmi HAT eklentileri için birleşik donanım standardı görevi görür; 28 genel amaçlı dijital G\u002FÇ hattı (BCM GPIO), 3,3 V ve 5V güç hatları, çift I2C, SPI, UART, donanımsal PWM ve I2S\u002FPCM ses kanalları sunar.","Dikkat: Raspberry Pi kartlarındaki Broadcom işlemciler kesinlikle 3,3 V lojikte çalışır ve 5V toleranslı DEĞİLDİR! Herhangi bir GPIO pinine 5V uygulamak SoC'yi kalıcı olarak bozar. GPIO başına maksimum akım 16 mA'dir ve tüm 3,3 V pinlerinden toplam çekilen akım 50 mA'i aşmamalıdır.","Raspberry Pi kartlarının 40 pinli GPIO header'ında yerleşik analog-dijital dönüştürücü (ADC) yoktur. Analog sensörleri okumak için I2C veya SPI üzerinden bağlanan harici ADC dönüştürücüler kullanın (örneğin ADS1115 veya MCP3008).","Temel arayüzler: yerleşik 1.8 kΩ pull-up'larla pin 3 (SDA) ve pin 5 (SCL) üzerinde I2C1; pin 19 (MOSI), 21 (MISO), 23 (SCLK), 24 (CE0), 26 (CE1) üzerinde SPI0; pin 8 (TXD) ve 10 (RXD) üzerinde birincil UART0; GPIO 12, 13, 18, 19 üzerinde donanımsal PWM; GPIO 18 (CLK), 19 (FS), 20 (DIN), 21 (DOUT) üzerinde I2S\u002FPCM ses.","Pin 27 (ID_SD) ve 28 (ID_SC), I2C0 üzerindeki HAT ID EEPROM'una ayrılmıştır. Resmi HAT spesifikasyonu tarafından açılışta donanımın otomatik tanımlanması için ayrılmışlardır ve asla genel amaçlı GPIO veya kullanıcı sensörleri için kullanılmamalıdır.","28 BCM GPIO hattının tamamı yazılımla yapılandırılabilir dahili pull-up ve pull-down dirençlerini, kenar tetiklemeli kesmeleri ve pin başına 2 ile 16 mA arasında sürme kapasitesi yapılandırmasını destekler.",{"summary":909,"power":910,"notes":914,"useCases":918,"before":922},"Raspberry Pi modellerinde (5, 4B, 3B+, 3, Zero) ortak, 2.54mm aralıklı standart 40 pinli genişletme header'ı (J8). 28 BCM GPIO hattına, I2C, SPI, UART, PWM, I2S veri yollarına ve 3,3 V\u002F5V güç hatlarına doğrudan erişim sağlar.",{"usbc":911,"pins":912,"poe":913},"USB Type-C güç girişi (5V DC, Pi 4 için önerilen 5V\u002F3A veya Pi 5 için 5V\u002F5A PD)","Çevre birimlerini beslemek veya karta güç sağlamak için header üzerindeki pin 2 ve 4 (5V) ile pin 1 ve 17 (3,3 V)","Ethernet jakının yanındaki özel 4 pinli header üzerinden Ethernet üzerinden güç (PoE \u002F PoE+ HAT)",{"logic":915,"hat_id":916,"bcm_vs_phys":917},"Kesin 3,3 V lojik: GPIO'lar 5V toleranslı DEĞİLDİR. 5V bileşenleri bağlarken daima çift yönlü lojik seviye dönüştürücü kullanın.","ID_SD (27) ve ID_SC (28) pinleri açılışta HAT ID EEPROM algılaması için ayrılmıştır — buraya genel çevre birimleri bağlamayın.","Python ve C kütüphanesi yapılandırmalarında fiziksel pin numaraları (1-40) ile BCM GPIO numaraları (GPIO 0-27) arasındaki farka çok dikkat edin.",{"hats":919,"automation":920,"iot":921},"Resmi ve üçüncü taraf HAT aksesuarlarının (ses DAC'leri, ekranlar, motor denetleyicileri, sensör shield'leri) üst üste takılması.","Endüstriyel ve ev otomasyonu kontrolü, robotik, röle anahtarlama ve step motor kontrolü.","I2C, SPI ve 1-Wire dijital sensörler kullanarak IoT ağ geçitleri ve çevresel izleme istasyonları kurma.",{"no_5v":923,"adjacent_5v":924,"hat_eeprom":925},"Hiçbir GPIO pinine 3,3 V'tan fazlasını uygulamayın. 3,3 V'un aşılması Broadcom işlemciyi kalıcı olarak yakar.","Pin 2 ve 4'ü (5V) ölçerken son derece dikkatli olun; pin 1 (3,3 V) veya pin 3 (GPIO 2) ile kazara kısa devre kartı kalıcı olarak bozar.","Resmi bir HAT EEPROM'u ile iletişim kurmuyorsanız, açılış sırasında pin 27 ve 28'i yüksek veya düşük seviyeye çekmeyin.",1791754288689]