MAIKARD Serial No. Number of Ports Onboard Specifications 1 13 Digital Pinout 2 6 Analog Pinout 3 1 SPI port 4 2 I2C port 5 4 OneWire plugin 6 1 UART 7 2 OLED 8 1 DS18B20 9 1 HCSR04 10 1 DHT 11 2 Relay 12 1 PIR 13 1 MicroUSB power plug 14 1 RGB