esp8266 - Can I use a 3.3v GPIO to control an opto-isolated 5v relay

Arduino Relay Shield Circuit Diagram

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Arduino Relay Shield Circuit Diagram

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Arduino Relay Shield Schematic
Arduino Relay Shield Schematic

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Arduino Relay Shield Circuit Diagram
Arduino Relay Shield Circuit Diagram

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esp8266 - Can I use a 3.3v GPIO to control an opto-isolated 5v relay
esp8266 - Can I use a 3.3v GPIO to control an opto-isolated 5v relay

Diy arduino relay driver shield pcb

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Relay shield arduino schematic
Relay shield arduino schematic

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Arduino Relay Shield Circuit Diagram
Arduino Relay Shield Circuit Diagram

Circuit Diagram Fir Arduino Relay Shield
Circuit Diagram Fir Arduino Relay Shield

WeMos D1 mini Relay Shield 5V D1 mini Relay Module for WeMos D1 New
WeMos D1 mini Relay Shield 5V D1 mini Relay Module for WeMos D1 New

Arduino - Relay Shield | Arduino Tutorial
Arduino - Relay Shield | Arduino Tutorial

Arduino Relay Shield Schematic
Arduino Relay Shield Schematic

KY-019 5V Relay Module - ArduinoModulesInfo
KY-019 5V Relay Module - ArduinoModulesInfo

Simple Relay Shield for Arduino
Simple Relay Shield for Arduino

Arduino, relay shield and 12 solenoid valves wiring - General
Arduino, relay shield and 12 solenoid valves wiring - General