1.1. K18 Dev3.0 Board Introduction

Kamino18 Dev3.0 is a reference solution for smart speaker products. It contains main board and sub board two parts. As the below picture: Main Board Diagram

• Lineout: Stereo headset
• SPK: Speaker 3.2w
• Analog_MIC: socket which can connect analog MIC daughter board
• BOOT: Boot key
• Debug FPC: socket which can connect Debug daughter board
• Camera: socket which can connect 2M Camera(OV2640)
• WIFI ANT: socket which can connect external antenna
• TYPE_C: ADB debug interface and usb power supply
• UART_SW: SW switch; switch to left, mcu uart output; switch to right, arm uart output;
• LED: 12PCS RGB LEDs
• MIC: 4 DMICs

Debug sub board Diagram

• IR: Infrared ray receiver
• USB HOST: Usb host interface
• DEBUG: USB UART converter for MCU and ARM debug
• UPGRADE(BOOT): The key for Image burning
• PWR(NC): Reserved key
• VOL-: Volume minus key
• VOL+: Volume plus key
• MUTE: MIC Mute key
• RST: System reset key

• GPIO: GPIO extension USB Cable Connection Diagram

• USB1 power supply and ADB,

• USB2 UART Debug, need install FT232 driver on PC, which can’t provide power supply for K18 DEV3.0
• UART SW, Left for CK Debug, Right for ARM Debug.