All You Need to Know About Arduino Relay Shield
Arduino relay shield is one of the main components that you need to start an Arduino project. This relay shield is basically a module with features such as 4 mechanical relays and many more. This shield has the function as the provider of high voltage control for your project. If you do not know a lot of things about this shield, you need to expand your knowledge and below is everything that you need to know about the Arduino relay shield.
1. The Arduino Relay Shield Functions
One of the main Arduino relay shield functions is to allow your Arduino project or robotic project to drive high power loads. Sometimes, a project need high power loads and the amount of power cannot be controlled if you only use the digital pins of the Arduino only. This is where you need the relay shield. This shield has four relays. Each and every one of the relay is completed with a couple of pole changeover contacts. They are the NC and the NO. Each has the function to load the high power. This shield also has four LEDs installed on each relay to indicate the on state or off state. With this shield, it will be easier to distinguish the state of the shield as well.
2. The Features of Arduino Relay Shield
Some of the features from the relay shield produced also by Arduino is that it has great operating voltage. It only needs 5V to be operated. It also has 140mA coil current consumption. The amount is if you use all four relays. If you only use one or two, the coil current consumption is about 35mA each. Because it main function of the Arduino relay shield is to help the project to drive higher power load, the maximum load voltage that this shield can handle is quite big. It is up to 48 V. As for the maximum switching capacity, the shield only needs approximately 60 W.
3. The Power of Arduino Relay Shield
The Arduino relay shield is quite easy to use as it does not need any external power. The power for the shield will be provided solely by the base board. The shield only use the 5V operating voltage and the 3.3V pins on the Arduino board as the base of the power. This shield will produce more power and help the project to handle more power if you use the right or the compatible board. The compatible board to use with this shield is the basic 5V Arduino boards. The 3.3V standard boards work just fine as well.
Now that you know everything about Arduino relay shield including its functions, features, and its power production, you can really start your project or using this shield. If you build a project in a bigger scale and thus you need more power, this shield is going to be the best power provider for the project. This is why you do need the Arduino relay shield in order to make your project works just fine