Materials:-
ESP8266 Nodemcu Board: https://www.flyrobo.in/nodemcu_esp8266_wifi_development_board?tracking=5c723900abvrl
PCB Components:
Relay 5V
Push Button (Tactile Button)
330 ohm resistor
1N4007 Diode
LED
BC547 / 2N2222 Transistor
Block Terminal Connector
PCB Header
5V Power Adapter
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