How to make a relay module for arduino project using bc547 transistors

Today I will show you how to make a relay module using bc547 transistor if you like the video please hit the subscribe button if you need circuit diagram please click the link https://mega.nz/file/JgxyALaT#d9IA2N6KN6lOY2DxlOhc_rqvjoGUWsXS8pUUhnoBe6Q ... https://www.youtube.com/watch?v=e9ZN5fm66PY