Arduino Tutorial Hy M154 817 Pc817 Optocoupler

How to wire the communication circuit for the 817 optocoupler module

This tutorial gives an introduction to the HY-M154 / 817 optocoupler module. Moreover, a simple application is programmed that shows how to wire and how to program an Arduino when working with the m.

Optocoupler Module and Analog Input

An optocoupler can be also effectively used for interfacing analog signals across two circuit stages by determining a threshold current through the IRED and subsequently modulating it with the applied anal.

Function of the 6 pins of the optocoupler

Internally an optocoupler contains an infrared or IR emitter LED (normally built using gallium arsenide). This IR LED is optically coupled to an adjacent silicon photo-detector device which is generally a photo.