At the start and restart always Power OFF.

Install the Blynk app from play.google.com or Blynk - IoT for Arduino, ESP32 from the Apple store. + Auth Token for project and device.

You need

1. "1" NODEMCU - ESP8266

2. "1" 4CH RELAY

3. "1" Solderless breadboard - 400 tie-point , Size 8.2 x 5.5 x 0.85cm

4. "6" - WIRES

Step 1: ESP8266) + RELAY + BLYNK Inverted to LOW - LETS GET STARTED :))

1. START ARDUINO SOFTWARE: Download and UPLOAD - LOW_WORKING.ino

2. START- FILE------->PREFERNCES------>ADDITIONAL BOARD MANAGERS URL------->LINK

<<<<>>>>

3. TOOLS------->>>BOARDS---->>>BOARD MANAGER ----->>> SEARCH "ESP8266" ----> INSTALL

4. LIBRARY ->>>>> SEARCH -->> BLYNK - Blynk by volodysmr shymansky -----> INSTALL

5. TOOLS ----> PROGRAMMER------> ARDUINO ISP

6. TOOLS=>BOARD=>NODEMCU V1.0 (ESP8266-12E)

--------------

Introduction: ESP8266 CONTROLLED RELAY - USING BLYNK APP - Inverted From HIGH -> LOW