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“Today, well discuss automation using ESP01 with 16 relays. This is a super cheap design model where you can multiply the modules and get up to 128 relays, as it is possible to put up to eight port expanders in …
Content for MCP23016
The MCP23016 device provides 16-bit, general purpose, parallel I/O expansion for I2C™Compatible bus applications. It includes high-current drive capability, low supply current and individual I/O configuration. I/O expanders provide a simple solution when additional I/Os are needed for ACPI, power switches, sensors, push buttons, LEDs and so on.