5V USB 외부 전원공급 포트 및 3.3V/VIN 파워 스위치를 가지고 있어, 모터나 서보와 같은 전류를 많이 소비하는 장치를 동작시킬 수 있게 디자인되었습니다.
9개의 디지털 포트, 1개의 아날로그 포트, 1개의 시리얼 포트, 2개의 I2C 포트를 지원합니다.
특징
Onboard 5V external power port and 3.3V/VIN power switch, which makes the expansion shield able to drive high current components such as motors and servos
Color-coded Gravity connector, compatible with various sensors or modules of Gravity series, plug and play, no soldering required
9 sets of digital ports, 1 set of analog port, 1 set of serial port, 2 sets of I2C ports
SPECIFICATION
External Power Supply Voltage (onboard USB port): 5.0±0.1V
External Power Input Current (onboard USB port): <1A
Connector: Gravity series standard connector
Ports: 9 sets of digital ports, 1 set of analog port, 1 set of serial port, 2 sets of I2C ports
Interface Signal Level: High Level 3.3V, Low Level 0V
Analog Input Range: 0~3.3V
Onboard LDO Output Voltage: 3.3V
Onboard LDO Output Current: <500mA
Board Size: 35.6mm*24.8mm
Attention：
The USB port of the expansion shield is only used for power supply, so it cannot be used for programming or debugging. The continuous current of the USB port is recommended to be controlled within 1A.
When put the expansion shield on the OpenMV motherboard, please pay attention to the direction. The USB port of the expansion shield should be on the same side as the USB port of the OpenMV motherboard.
Because OpenMV motherboard works at 3.3V, limited by the voltage, it does not support 5V analog input. All signal pins are 0~3.3V.
If you need to drive high current components such as servos and motors, please connect them to P7~P9 ports, then connect the external power supply, and turn the power switch to VIN side. Otherwise, the OpenMV motherboard may be damaged due to high current.
The power supply of P7,P8,P9 port can be selected 3.3V or VIN by the power switch. The power supply voltage of the remaining ports are all 3.3V.
