Wiring The HMI NEXTION TFT Touch Display on 6 Channel Relay Module with Microcontroller

This is the NEXTION HMI a Human Machine Interface device that provides a GUI control of instruments that feeds from your microcontroller. The Nextion is simplified interface to visualize the process between a human and machine, these device is useful

Wiring 8 Channel Optocoupler Relay Module

In this tutorial we will going to wire the 8 channel Relay Module driven by our own very owned microcontroller, the below illustration illustrate 8 device on external power source triggered by the relay. The 8 channel relay module has

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