Function Description
CPU RK3308 Arm 64-bit 4-core 1.2GHz
Memory 512MB DDR3
Hard Disk 16GB eMMC
OS debian 10
Wi-Fi & Bluetooth RTL8723DS 2.4G&4.0
Co-processor GD32VF103C8T6 RISC-V 108MHz & 64KB Flash & 32KB SRAM

Onboard Components

Function Description
Button Home, A/B
Screen 2.8-inch touchscreen color display with 240x320 resolution
Microphone Capacitive silicon microphone
Light sensor PT0603 Photosensitive triode
Buzzer Passive buzzer
6-axis Motion Sensor 3-axis accelerator and 3-axis gyroscope (ICM20689)


Function Description
USB Type-C Connect CPU to a PC for coding; supply power for mainboard
USB TYPE-A For connecting USB peripherals
Micro SD Socket Expanding storage space
3Pin I/O Support 3 10-bit PWM and 2 12-bit ADC
4Pin I2C Independent I2C channel, not shared with onboard I2C components
Edge Connectors Pin numbers are compatible with micro:bit, 19 independent I/O (Support 1 ×I2C, 1×UART, 2×SPI, 6×12-bit ADC, 5×10-bit PWM)

Power Supply

Function Description
Power Supply Type-C 5V Power supply (Note: It can only be powered by Type-C)
Operating Voltage 3.3V
Max Operating Current 2000mA