Hi all, In my circuit I'm controlling the following devices using arduino mega 2560;
2-Wiper Motors (DC 12V, 3A each) Heating Coil (AC 230V, , 600 W) 2- Fans (AC 230V, 25 W each)
Also an LCD 16x2 is interfaced with the circuit. The circuits operates okay, but when some relay switches (relays which controls heating coil and Fan), suddenly garbage values are displayed on LCD. I'm using a 4 channel relay module to control the heating coil and fans which have the capacitors and diodes in it. How to correct this problem.