Hi,
Have you got the gnd of the relay board connected to the gnd of the Arduino?
Can you please post a copy of your circuit, in CAD or a picture of a hand drawn circuit in jpg, png?
Thanks.. Tom.. ![]()
Hi,
Have you got the gnd of the relay board connected to the gnd of the Arduino?
Can you please post a copy of your circuit, in CAD or a picture of a hand drawn circuit in jpg, png?
Thanks.. Tom.. ![]()