Recommended · for some experience

120/240V to logic level optoisolator (with schematic)

Name: 120/240V to logic level optoisolator (with schematic)
Channel: bigclivedotcom
Description: Big Clive's in-depth look at a single-channel optoisolator module, suggested for switching a mains load such as a pump and for learning how these boards work.

bigclivedotcom

Why people recommend it

Big Clive's in-depth look at a single-channel optoisolator module, suggested for switching a mains load such as a pump and for learning how these boards work.

Watch for: Long and detailed; involves mains voltage

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Why people recommend it

If you liked this

Control High Voltage Devices – Arduino Relay Tutorial

How to use 5V Relay with Arduino to turn ON and OFF AC bulb or DC load

USB soldering iron test and teardown with schematic.

How to make an authentic Joule Thief.

Don't do this! (There's a much safer way)

Things you should know about fuses. (including a 15kV one)