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Results tagged with relay
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user 42134
A relay is a part that acts like a switch that can be controlled by an Arduino. They usually are powered by sending current through a coil, which moves a piece of metal to touch a contact within it. (Note there are also solid state relays which act more like a transistor.) The moving parts is why some devices make a "clicking" noise when they turn on/off a light or another device attached to it.
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Arduino controlled relay for certain duration of time
I am using a relay on my Arduino Uno and i want it to be on LOW for a calculated interval of time, let's say ftime=7 seconds, and after that i need it to be set as HIGH (no power through relay). … My code below makes no changes to the relay state. How would that be possible? I tried to use "delay()" too (which i know that is generally a bad idea), but had no success. …
