6️⃣ I/O Expander

I/O Expander

Specification

8-channel I/O expander utilizing I2C for communication with a host. It is capable of controlling up to 8 relay modules, MOSFET switches, or similar devices. Additionally, it can perform analog-to-digital conversion and provide digital readings. Host polling is employed to monitor changes in module values.

  1. 4-channel Digital Pin
  • OUTPUT PWM signals(3.3v/5v)
  • OUTPUT High and Low levels(3.3v/5v)
  • INPUT High and Low levels
  1. 4-channel Analog Pin
  • INPUT Analog signals(0-5v / 0-10v)
  • INPUT High and Low levels
  • OUTPUT High and Low levels(5v)

Docs

  • SCH

Application

Drive a relay

Drive a MOSFET switch module

Produce a PWM signal

Read Analog Signals