The module is an extension for Arduinowith four relays that allow to switch off and on devices with power consumption up to 60 W (30 V / 2 A). The sale of the product has been completed.
ARDUINO RELAY SHIELD 230V ANDROID
With a quick google search I found this page. This kind of confused me, because which is positive and which is neutral? In my light there were to cables, one blue and one brown. No just kidding, the hot wire basically means the positive wire coming from the wall outlet. We will be connecting the hot wire to the COM port, go ahead and do that. When you have cut off some insulation you will immediately see two wires, these refer to neutral or ground and positive. On my light it was white but on yours it could be black, who knows. First we will have to remove the 1st layer insulation, it is usually colored black or white. It has been standing and doing nothing for some time so I though I would use it for this tutorial. I will be controlling AC light from the relay. Read more about hot wire in the next step. When we trigger the relay HIGH, it is open and no current flows through.ĬOM is the common connection, we will be using this along with the NO terminal. IS stands for normally open and is only closed when we trigger the relay LOW. The NO on the other side is one of the terminals we will use. NC is pretty much nothing we are going to use, it stands for normally closed and there is always a connection between COM and NC until the relay is triggered HIGH.
One called NC (normally closed), one COM (common connection) and NO (normally open). On the other side of the relay, there are usually three screw terminals. You can connect this to any pin of the arduino, as long as it's an output pin. The in pin is where you will be controlling your relay from. Where VCC is the arduino's 5 volts, the GND is the arduino ground. These pins are usually labelled something like VCC, IN, GND. Of course, there can be up to 10 pins if you have a relay module that features 8 relays on that PCB. There are three pins on the relay that you connect to the arduino. The relay looks pretty complicated at first, and that is what I thought, but after some look arounds I found out what does what. And if you do get electrocuted, the other person cannot just walk to you and grab you, but that person has to push you away from the electricity using some force, as the current will flow through your helper immediately once he touches you with both hands.įinally, never do something you are not 100% sure you know it will work, do not take ANY shortcuts, were talking about a you, a life. This might sound silly, but even if you are older the presence of another person is almost crucial, as that person can help you get away from high voltages. One great technique is the one hand one, simply keep one hand in your pocket or make sure not to use it, this will prevent any potential current from flowing through your body.Īnother one is to always have another person close to you.
ARDUINO RELAY SHIELD 230V HOW TO
So there are some great tips out there on how to work with high voltages when your nervous about being killed, when you just don't want to be messing with them, sure you could just go and pick up this product from adafruit but that is no fun, is it?
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