MCP23017 IIC to 16 Bit IO Expansion Module rca with a maximum current rating

with a maximum current rating of 3 amps per wire

5v GND GND Dimension 32mm x 14mm Interface Analog and digital Wiring & usage notes

It is designed to measure force

So we create this RS485 Arduino shield

Key feature: DO port output will be high in case the module is unable to reach the set threshold

MCP23017 IIC to 16 Bit IO Expansion Module rca with a maximum current ratingThe MCP23017 I2C 16 Bit I O Expansion Module adds more digital input and output pins to a microcontroller. It is useful when an Arduino, ESP32, Raspberry Pi, or other control board does not have enough available GPIO pins. The module connects through the I2C interface, which only needs two communication lines: SDA and SCL. It provides 16 extra GPIO pins divided into two groups of eight. Each pin can be set as an input or output through your program.