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Lesson 22 – 1-channel relay module « osoyoo.comStep 3: wiring the esp to the relay .
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Lesson 22 – 1-Channel Relay Module « osoyoo.com
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Relay Module Connection in Arduino: Code and Wiring Diagram
Wiring 8 Channel Optocoupler Relay Module | 14core.com
Step 3: Wiring the ESP to the relay - PieterBrinkman.com
ESP8266 NodeMCU Relay Module - Control AC Appliances (Web Server
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