i bought a 4 channel relay board and hooked it up to my arduino. Anything seems to work fine, i can switch the relay on and off and on…
When a high voltage device is connected (my desk light 230v) it is working (connected to com + NC) but when i switch the relay off the light turns off and my arduino gets disconnected from usb and reconnects. Do the relay needs more current for switching high voltage circuits? Vcc and Jd-Vcc is connected so the arduino supplies the power to switch (USB 400ma should be enough…)
My relay board is working with 5v and can switch high voltage (230v 10A) and there seems to be anything needed builtin (diode, resistor,…)
So whats the problem here?
Thanks for help!