Is it possible to make ethernet shield control inputs/outputs over LAN? A website that has buttons for on/off etc? What would be smart way to control 230V mains with 5V arduino? SSR isnt possible because it has to be NC-relay. If arduino fails etc that relay has to conduct.

arduino + 230V pump + ethernet shield

zoomkat June 23, 2011, 1:38pm 5

Thre are various relay boards available that are made for use with microcontrollers, parallel ports, etc.

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