hello, i have made my home automation using 4 channel relay and Node mcu
every thing went well but i am facing two problems,( i have used D1, D2, D3, D8 of Node MCU with the relay )
when i turn on the supply of the board relay connected to D3 turns on for a fraction of second and then turns off, how to remove this problem??
If all my devices are in ON state and if i turn off the power to the main board, after turning it ON again it gets reset means all the devices are in OFF state now how to remove this problem ??