NANO UNO yellow pin header multi-purpose expansion board

Model: YZQ-S0001
*Main features:I2C expansion Pin
*Design specially for Arduino Nano
*Expand DC power interface for NANO USB interface
*Weight:25g
*AREF output:3.3V output
1. Lead out all digital IO ports and analog IO ports, each IO port has a standard positive and negative power interface
2. Lead out the I2C interface on the motherboard to facilitate the connection with I2C devices
3. Add a DC power supply interface. The actual power supply current of the USB interface on the NANO board is only 50MA, which is obviously insufficient when carrying high-current devices such as servos. At this time, an external power supply is provided at the DC power supply interface to ensure the stability of the device operation.