![Nodemcu becomes unavailable when powered from relay, but works with external power, but then connected relay is humming - Hardware - Home Assistant Community Nodemcu becomes unavailable when powered from relay, but works with external power, but then connected relay is humming - Hardware - Home Assistant Community](https://community-assets.home-assistant.io/original/3X/c/e/ce42aea09b8cab1847a2b2f368e08ccc0e6ca835.jpeg)
Nodemcu becomes unavailable when powered from relay, but works with external power, but then connected relay is humming - Hardware - Home Assistant Community
![Robotbanao MB102 Breadboard 3.3V/5V Power Supply Regulator Module + NodeMCU ESP8266 WiFi Wireless Module + NRF24L01 2.4GHz Antenna Wireless Transceiver Module - Combo : Amazon.in: Computers & Accessories Robotbanao MB102 Breadboard 3.3V/5V Power Supply Regulator Module + NodeMCU ESP8266 WiFi Wireless Module + NRF24L01 2.4GHz Antenna Wireless Transceiver Module - Combo : Amazon.in: Computers & Accessories](https://m.media-amazon.com/images/W/MEDIAX_792452-T2/images/I/61XZU98CqOL.jpg)
Robotbanao MB102 Breadboard 3.3V/5V Power Supply Regulator Module + NodeMCU ESP8266 WiFi Wireless Module + NRF24L01 2.4GHz Antenna Wireless Transceiver Module - Combo : Amazon.in: Computers & Accessories
![Electronics Tutorial: How to make power supply for Nodemcu ESP8266 wifi module using a Regulator - YouTube Electronics Tutorial: How to make power supply for Nodemcu ESP8266 wifi module using a Regulator - YouTube](https://i.ytimg.com/vi/FWYXp--6OAI/maxresdefault.jpg)