GPIO 27 -> DHT GPIO 34 (ADC1_6) -> MQ-a GPIO 33 (ADC1_5) -> MQ-b GPIO 32 (ADC1_4) -> MQ-c GPIO 35 (ADC1_7) -> MQ-d GPIO 16 -> GPS TX GPIO 17 -> GPS RX GPIO 5 -> MMC CS GPIO 18 -> MMC SCK GPIO 19 -> MMC MOSI GPIO 23 -> MMC MISO GPIO 21 -> CLOCK SDA GPIO 22 -> CLOCK SCL Obs.: MMC_VCC -> 5V
