Running NodeMCU on a battery: ESP8266 low power consumption revisited – Tinkering with Technology
Electronics Tutorial: How to make power supply for Nodemcu ESP8266 wifi module using a Regulator - YouTube
First Steps with the NodeMCU ESP8266 Wi-Fi Module and Arduino NANO | Maker, MakerED, Coding | Tips 2 | EDU: Digital CitiZENship, CyberSecurity, eSkills, Modern EDU by Gust MEES
Nodemcu becomes unavailable when powered from relay, but works with external power, but then connected relay is humming - Hardware - Home Assistant Community
Basics: Project 066d ESP8266 ESP-12E WI FI module (LoLin NODEMCU V3), 5V relay module - protected IO at Acoptex.com / ACOPTEX.COM
Reducing NodeMCU power consumption - itooktheredpill
12V LED + NodeMCUv3 Working; 5V LEDs not working - Issues - WLED
REES52 NodeMCU LUA WiFi Internet ESP8266 Serial Development board + Wifi Wireless Transceiver Module Esp-01 + Breadboard Power Supply Module 3.3V/5V For Arduino Uno Board : Amazon.in: Computers & Accessories