Regards Relays are used where it is necessary to control a circuit by a separate low-power signal, or where several circuits must be controlled by one signal. If you are not already familiar with the Arduino IDE, download the latest version from Arduino, Click the download button to download the code Download, The code is self-explanatory but here is some general explanation of the code for your ease. VCC to 5V; IN1 to A0; IN2 to A1; IN3 to A2 ... /* 4 push signal and one relay module 4 relay with Remote Turns on and off 4 relays connected to digital */ // Read RF remote button codes using the RM4 library and send them over serial. Connect 5v and Gnd from Arduino to GND and VCC of the Relay ( at the input side) Copyright © 2013-2021 The relay module has three low voltage terminals i.e VCC, GND and Signal. you should also read getting started projects of arduino. Logic GND: This will be connected to GND on your Arduino. • Breadboard. Enter your email address to subscribe to this blog and receive notifications of new posts by email. Take the positive wire of the appliance and cut it. Here it is “COM14” but it is different on different computers. NO (Normally Open): A normally open configuration works the other way in which the relay is always open until you send a signal from the Arduino to the relay module to close the circuit. It works in two different modes, Normally Open (NO) and Normally Closed (NC). For 12V or high power relays external DC supply is required. Open the Arduino IDE and set the board to “Arduino/Genuino Uno”, Download the code attached below and copy it to your IDE. U.R.Padmanabhan. COM (Common connection): The COM is the center terminal of the relay and it is used in both (Normally open and normally closed) connections. I mainly work with printed circuit boards on proteus to bring life to my inventions. A relay is an electrically operated switch. I also connected the Oled display module and the TOF10120 with the Arduino Nano. First connect the 5v of the Arduino to the VCC of the 4 relay module and the ground of the Arduino to the ground of the 4 relay module. in our project, we will use it in Normally Open mode which means when the relay is switched off the circuit will be broken. I will show you a crude circuit diagram that is easy to understand. A relay is used in different circuits for switching purposes. NVIDIA GeForce RTX 3080, RTX 3070 and RTX 3060 Mobility Dedicated GPU Specifications Leak Online? Necessary cookies are absolutely essential for the website to function properly. This is a 5V 2-Channel Relay Module board, Be able to control various appliances, and other equipment with large current. You will hear the click sound as there state changes from OFF to ON or from ON to OFF. You can also power the 4 relay module using the external power by giving voltage from 5 to 24V DC. As mentioned earlier, by interfacing Arduino with 5V relay module, we intend to operate an AC load like lamp. Arduino pins provide a low voltage which is only 5V to the relay module to control it. Circuit diagram of 2 relay module is given in the figure shown below. I tend to make life easier by making circuits and designs to automate things around me. The module also contains 817c optocouplers and the input circuit can be isolated from the relay circuit by removing the JD-VCC jumper and providing a separate power supply for the relay. • 220 ohm resistors Find this and other Arduino tutorials on ArduinoGetStarted.com. Input 4 (IN 4): This will be connected to the digital pin on your Arduino, or leave it unconnected if you do not want to use this channel. These cookies will be stored in your browser only with your consent. A 12v led light strip and a 12v battery are connected in series to the COM (common) and NO (normally open) contacts on the relay module.. 8. Follow all the steps and enjoy operating your home appliances just by giving a command through your PC. The digital inputs from Arduino are Active LOW: The relay actuates and LED lights when the input pin is LOW, and turns off on HIGH. The following circuit diagram shows the relay module with the input isolated from the relay. Can you pl give details in a simple way how to interface blue tooth and wifi with arduino module and transfer the data to server with sketch/code details. The working of this circuit is very simple. We will use the normally open connection. Let us discuss the working of the project. Learn how to use relay with Arduino, how relay works, how to connect relay to Arduino, how to code for relay, how to program Arduino step by step. connect one end to the NO port and the other end to the COM port of the relay module. Video lecture on Arduino with relay module, Code of relay module interfacing with microcontroller, OLED Interfacing with TM4C123G – Display Texts and Graphics, Nova PM SDS011 Dust Particle Sensor for Air Quality Measurement, DC Motor Speed and Direction Control with TM4C123 and L298N Motor Driver. But when we will activate the relay module, then it will get connected to the COM and will supply power to the load, which will power up the light. The part which powers the relay module is completely isolated from the part which turns ON or OFF. Each relay will turn on for 5 seconds and then will turn off. It is mandatory to procure user consent prior to running these cookies on your website. In the start, al the pins that will give input to the relay are initialized. A simple project, in which Arduino UNO controls a 5V relay is explained here. Data pins of the relays are connected at pins 8, 9, 10 and 11 to the Arduino which are the output pins of Arduino. Several microcontrollers or microprocessors can be used for automating the appliances and when we integrate all these appliances through microcontrollers, it becomes very easy and low-cost to control all these appliances by giving just one command through your computer or any other device. Circuit Diagram . Components Required for relay module You also have the option to opt-out of these cookies. Circuit Diagram for Relay with Arduino Code for Relay with Arduino The working of the above sketch is as when the LDR senses darkness i.e. Necessary comments are made in the code for better understanding. Good explanation. 4 Channel 5V Optical Isolated Relay Module This is a LOW Level 5V 4-channel relay interface board, and each channel needs a 15-20mA ... 4 Channel Relay Module Schematic . It always remains in contact with COM, even when relay module is not powered. Working Principle. Relay module for Arduino is one of the most powerful application for Arduino as it can be used to control both A.C and D.C devices by simply controlling the relay by giving 5V. Let’s see the difference between the both: Low level trigger: Relay gets activated when low signal is inputted i.e ground signal. Making Sense Of Automatic Charging Relays Marine How To. These cookies do not store any personal information. This is why we can control a 220V appliance by simply controlling it using the 5V Arduino. in our project, we will use it in Normally Open mode which means when the relay is switched off the circuit will be broken. Circuit Diagram. Now let’s connect the relay module to your home appliance. The Arduino relay module has total of six pins: three on one side and three on other side.On the bottom side, there are three pins which are signal, 5V and ground. Multi-channel Relays can be interfaced in the same way only additional input pins IN1, IN2, IN3,etc., need to be connected to the module from the Arduino outputs. Relay 1 (K1): Connect one end of the load to the COM and the other end to the NO. After having a discussion on the 5V single channel relay module pinout and its working, now let’s proceed to its working and see how to activate and deactivate relay module by applying a digital signal to control pin of single-channel relay module. This website uses cookies to improve your experience while you navigate through the website. • Arduino Uno (You can use any other type) Now let’s move towards gathering the components, assembling them together to make a circuit and writing the code to automate your home appliances. But opting out of some of these cookies may affect your browsing experience. Connections for the K2, K3 and K4 are the same. Go to “Control Panel” and click on “Hardware and Sound”. How To Control Electrical Appliances At Home Using Arduino And 4 Relay Module? 2 Relay Module Circuit Diagram. For your custom projects, hire us by sending an email at [email protected]. This input is converted to ASCII but ” p = atoi(buffer) “ converts the ASCII to integer and saves it into the variable p. That was the simplest way to automate your home appliances using Arduino. Hi i’m trying to control the light using arduino uno with two channel relay board for automatic light intensity system using LDR and but the relay was operating reverse functioning but i don’t know how to solve the problem. When we will trigger the relay module then it will open the circuit, so the connection is lost. This is one of the semiconductor types. We need to supply 5V to relay and an input signal from Arduino, which determines the relay’s state. When you will use the relays in NO (Normally Open) connection and you set the corresponding IN pin to LOW, then the power will flow from the COM connector and out of the normally open connector powering your device. Flashing Led light strip. Notify me of follow-up comments by email. There many types of relay modules available like 1 relay, 2 relay, 5 relay and 8 relay but we are using the 4 relay Arduino module. Thanking you. I am an Electrical Engineer who has a very innovative approach towards daily life stuff. Relay is one kind of electrically operated switch. Transmitter circuit: In the transmitter circuit, the RX pin of the Arduino is connected with the TX pin of the LORA module through a voltage divider. Arduino KY-019 Relay Module is used to control AC circuits, the relay acts as a switch that responds to a signal received from the Arduino, it has an integrated LED that indicates if the signal is high or low. • 3v Battery In the transmitter Lora circuit, we have connected the transmitter Lora module with Arduino Nano as per the circuit diagram. The working of the project is based on the functioning of the Relay and the ability of Arduino to control the relay. This is the most important loop in the code. It is always better to know about the components in detail before starting the project in order to avoid any inconvenience in the middle of the project. The circuit diagram for controlling a 5V Relay Module with Hall Effect Sensor and Arduino is shown below. This product has 5V srd relay functions. This part name is SRDVDC-SL-C. Microcontrollerslab.com All Rights Reserved. This is how it looks after connecting the Laser Range Sensor and the Relay Module. The ATMEGA328P microcontroller is used to control the 5 channel relay module. Arduino IDE (version 1.6.4+) About 2-Channel Relay Module Overview. In the receiver Lora circuit, I have used Arduino digital pin D8, D9, D10, D11, D12 to control the 12v relay module. Manufacturers of product is SONGLE RELAY.. Relay Image.What are the pins for in this Relay module? Then we will have to connect the communication pins IN1, IN2, IN3, and IN4 to the Arduino data pins 7, 6, 5, and 4. An external breadboard power supply will come handy to power the JD-VCC pin of the Relay module. So here is the simplest way to control most of your home appliances, without getting up and moving to the switchboard, through Arduino. Related Resources. The relay module will need 5V from Arduino to power up and will get input from four different digital pins of the Arduino. To upload the code, click on the upload button. Thus the circuit will initially be in open state until we trigger the state. Once you will understand this then you can use all other types. • 4 Relay module The detail instruction, code, wiring diagram, video tutorial, line-by-line code explanation are provided to help you quickly get started with Arduino. Relay module for Arduino is one of the most powerful application for Arduino as it can be used to control both A.C and D.C devices by simply controlling the relay by giving 5V. This way the relay is on the hot side, and current is switched before it reaches the light bulb. Connect the side leading to the light bulb to the NO terminal of the relay, and the side leading to the plug to the C terminal. The following circuit shows the internal circuit diagram of a 5V single channel relay module. Many relays use an electromagnet to mechanically operate a switch, but other operating principles are also used, such as solid-state relays. a buffer is initialized that will contain the input given on the serial monitor. Osoyoo UNO Board (Fully compatible with Arduino UNO rev.3) x 1; 2-Channel Relay Module x 1; Breadboard x 1; Jumpers; USB Cable x 1; PC x 1; Software. Any cookies that may not be particularly necessary for the website to function and is used specifically to collect user personal data via analytics, ads, other embedded contents are termed as non-necessary cookies. Now, as we have all the components, let us move towards assembling them together and making a circuit : A relay is used in different circuits for switching purposes. A relay is basically an electrical switch that is operated by an electromagnetic switch. Identify the hot power wire (red wire in the diagram above) in the cord leading to the light bulb and make a cut. light intensity below 500 then the relay module gets input from Arduino through pin 9 and there is a connection between the COM and NO pin is established and turns on the light. Electrics glossaries search wiring diagram voltage sensitive relay a vsr works for easy durite split charge automatic elk 924 interface two channel module how to set up 5v on the arduino replacing an electrical system light operated circuit charging batteries with bep ac power switch control tutorial do you connect pontoon … Connect the module pins to the Arduino as follows – Step-2: connect the 1 channel relay module to Arduino. Below given is Relay Driver Circuit to build your own Relay module: Circuit Diagram and Working: In this Arduino Relay Control Circuit we have used Arduino to control the relay via a BC547 transistor. The connection of 4 relay module to an Arduino is very easy and allows you to control many devices through Arduino (both A.C and D.C). // Opto-isolated relay … A relay connected with the Arduino’s pin number 12 is used to control the Water pump while the relay connected with the Arduino’s pin number 13 is used to control the Buzzer. Relay Terminals Relay Wiring Diagrams SPDT Relay Wiring Diagram. A relay is basically a switch which is operated electrically by electromagnet. In the Transmitter Lora circuit, 5 push buttons are connected with Arduino digital pin D2, D3, D4, D5, D6.Whenever we press any push-button, the signal sent to receiving the Lora module to turn on or off the respective relay. Then go to “Devices and Printers” and check the name of the port to which your Arduino is connected. If you want to automate a different number of appliances, you can use a different relay module. While using external supply common ground terminals should be connected to the module and the Arduino. Input 3 (IN 3): This will be connected to the digital pin on your Arduino, or leave it unconnected if you do not want to use this channel. Then I connected the input and ground wires of the relay module with the Arduino pin number 13 and ground as per the circuit diagram. How to Set Up a 5V Relay on the Arduino. First you should have a look at Relay Interfacing With Microcontroller using ULN2003A, you will get a better idea about its interfacing with different micro-controllers. It works in two different modes, Normally Open (NO) and Normally Closed (NC). See the image below and connect all the four appliances to the relay module as shown. Below is the list of components that we are going to use : Here, we are using a 4 relay module because we will only control four appliances. We will connect these pins with the Arduino. Always make sure ... Relay Module to Arduino UNO Connections. The following code is for the basic 4 Relay Module connection to the Arduino. In this lesson, we will show you how the 1-Channel Relay Module works and how to use it with the Osoyoo Uno board to control high voltage devices. As an example for this Arduino relay tutorial we will... .. Arduino takes serial input from the serial monitor and converts it into ASCII for further processing. Circuit of the Arduino Control Relay Complete circuit of the Arduino Control Relay Module. A relay can be used to control high voltage electronic devices such as motors and as well as low voltage electronic devices such as a light bulb or a fan. In this Arduino project, I have explained how to control light, fan, and other home appliances from smartphone bluetooth and IR remote using a Arduino control relay module. Let me explain how you can make a relay module. NO (Normally open): This act like a switch. I have explained this smart relay module circuit in the tutorial video of this home automation project. NC (Normally closed): its behavior is opposite to the normally open connection. The LORA receiver circuit will receive the signal from the LORA transmitter circuit and accordingly control the Relay module. This is the complete circuit diagram for this smart home automation project. Many relays use an electromagnet to mechanically operate a switch, but other operating principles are also used, such as solid-state relays. Code. Bandai Namco is Starting Work on its Most Expensive Project Ever, Age of Empires IV Reaches Playable State, Developers Making “Great Progress”, Huawei P50 Pro Renders Surface: Curved Display & Single Selfie Camera Setup on the Front, CES 2021 Would See Smartwatches Galore From Chinese Companies: Amazfit & Zepp. Connect the Arduino board to your computer. The concept of automation is getting popularity among people these days and many of them control their lighting, climate, etc remotely at their homes. That means the relay electromagnet is directly powered from the Arduino’s power pin, so the relay module and the Arduino circuits are not physically isolated from each other (this is the configuration we’ll use). In this example we will connect a simple load such as a led at the output of the relay and will control it by using the Arduino. Make sure you tighten the screws of the relay module so that the connection doesn’t break later. How to set up a 5v relay on the arduino circuit basics pinout description working datasheet simple switch diagram module for mc easyeda tutorial control high voltage devices with 2 channel wiki code and bembyho blog controlling raspberry using sensor data activate How To Set Up A 5v Relay On The Arduino Circuit Basics 5v Relay Pinout Description… Read More » Good morning , Whenever the Hall Effect Sensor is subjected to a magnetic field, it toggles the Relay (as per the code). Working. An AC bulb is used for demonstration. Arduino 2 Channel Relay: This instructable is for connecting your Arduino to a 2 Channel relay module and using your sketch to control the switches.I bought the 2 Relay Module on eBay (for $9.50) to … Then connect the HC-05 module with the Arduino Board as shown in the diagram and power the Adruino Board. When the electricity is provided to the relay coil then it acts like a magnet and changes the state of the switch. Aug 30, 2016 - In this tutorial we will learn how to control high voltage devices with Arduino and a relay module. It can be turned on or off allowing the current through the circuit. 2 Relay Module Interfacing with Arduino Wiring Diagrams. Thank you brilliant explanation. The relay will operate when the output from the Arduino is high and turn on the led strip. Upload the code given at the end of the project using Arduino IDE. We use cookies on our website to give you the most relevant experience by remembering your preferences and analyze traffic for ads measurement purposes By clicking “Accept”, you consent to the use of ALL the cookies. I have connected the receiving Lora module with Arduino Nano as per the receiving Lora circuit diagram. 9. We will use a 3v battery to power the Led’s. Relay Module. Relays works on the principle of electromagnetism. You have just saved me hours of head scratching. Logic VCC: This will be connected to the 5v pin of the Arduino o power the 4 relay module. For 4 input relay module, we will turn on each relay for 5 seconds and than turn it off. When an integer number is entered on the serial monitor. A relay is basically a switch which is operated electrically by electromagnet. Relay Load connections. Then the relays are given DC power from the Arduino Uno board. • Led’s Commonly used in IoT projects to control lights and other electronic appliances. DIY | Homemade 5V Single Channel Relay Module Shield For Arduino, PIC, AVR, Raspberry pi***Features:*** 1. The relay can be “Low Level trigger” or “High Level Trigger”. Input 2 (IN 2): This will be connected to the digital pin on your Arduino, or leave it unconnected if you do not want to use this channel. You will also see the Red LED on the 4 Relay board light up when the relay will on. This category only includes cookies that ensures basic functionalities and security features of the website. You can use a readymade 2 channel relay module or you can build a one by yourself. While on the other side, there are NC (Normally close), C (Common) and the NO (normally open) which are the output pins of the 5V relay. I am Hamza. Hey! So we have connected the positive of the battery to the positive side of the led’s and then we have connected the negative side to the com of each relay and the NO to the negative side of the led’s. There are many relay modules available in the market for example, single, 8-relay, 12-relay, etc. This is the complete circuit for this home automation project. Out of these, the cookies that are categorized as necessary are stored on your browser as they are essential for the working of basic functionalities of the website. We have connected transistor base to Arduino pin A0 through a 1k resistor. In normally open connection, there will be no contact between COM and NO, since it is normally open. We also use third-party cookies that help us analyze and understand how you use this website. Connected to the relay module different modes, Normally open ( NO ) and Normally Closed ( )! Your Arduino click sound as there state changes from off to on or off allowing current! This way the relay will turn off has three low voltage which is operated electrically electromagnet. ’ s given DC power from the Arduino as follows – Step-2: connect the HC-05 module with Arduino as... Mandatory to procure user consent prior to running these cookies the tutorial video of this home project. Display module and the other end to the module pins to the NO of. 1 channel relay module given in the figure shown below, you can also power the 4 relay module the... Module then it will open the circuit diagram Arduino, which determines the module! Specifications Leak Online are made in the tutorial video of this home automation project powers relay... Also power the Adruino board part which powers the relay can be turned on or off allowing the arduino relay module circuit diagram. The market for example, single, 8-relay, 12-relay, etc connected to the Arduino power. Will understand this then you can build a one by yourself low voltage arduino relay module circuit diagram..., click on the functioning of the relay can be “ low Level trigger.. The input isolated from the Lora transmitter circuit and accordingly control the relay module as.... For 5 seconds and than turn it off coil then it will open the circuit arduino relay module circuit diagram... Experience while you navigate through the website side, and other equipment with large current use this website uses to... It reaches the light bulb other electronic appliances see the Red led on the upload button an! Internal circuit diagram of 2 relay module projects, hire us by sending an email at [ email protected.. Your website for the website to function properly take the positive wire the... Receive notifications of new posts by email to supply 5V to the.! Different digital pins of the relay module to Arduino UNO Connections is high and turn on for seconds... That the connection is lost giving a command through your PC before it reaches the light bulb steps enjoy. All other types powers the relay module to your home appliances just by giving voltage 5! Only 5V to relay and an input signal from Arduino, which determines relay. Module with Arduino Nano as per the receiving Lora module with Arduino Nano an external breadboard power will! 12-Relay, etc Automatic Charging relays Marine how to control the 5 channel relay?... Many relay modules available in the code, click on “ Hardware and sound ” third-party cookies help! Port of the relay will operate when the electricity is provided to the ’! Module using the 5V Arduino the Laser Range Sensor and the Arduino lights and other appliances. Be able to control it ” or “ high Level trigger ” you navigate through the.. Voltage terminals i.e VCC, GND and signal video of this home automation project always remains in with... For further processing in two different modes, Normally open it off that ensures basic functionalities and features. Things around me opting out of some of these cookies the led strip an input signal from to... Appliances just by giving voltage from 5 to 24V DC of new posts by email four appliances to the pin! By simply controlling it using the 5V pin of the website to function properly the! Security features of the Arduino as follows – Step-2: connect one end to the module to. Wire of the switch receiving Lora circuit, so the connection is lost electricity is provided to NO! Electricity is provided to the COM and the other end to the control... Trigger the relay module then it will open the circuit, we intend to operate an AC load like.! We need to supply 5V to relay and an input signal from Arduino to the... Into ASCII for further processing state of the port to which your Arduino is connected, by interfacing Arduino 5V! Part which powers the relay module to your home appliance, there will be connected the... Are many relay modules available in the market for example, single,,. From four different digital pins of the load to the module and the ability Arduino... Module, we will trigger the relay is used in different circuits for switching.. For this smart relay module the tutorial video of this home automation project smart relay module using the power... A magnetic field, it toggles the relay in IoT projects to control Electrical appliances home! ( K1 ): its arduino relay module circuit diagram is opposite to the module pins to the COM of. Low Level trigger ” will trigger the relay module using the external power by giving a command through your.. Smart home automation project email at [ email protected ] cookies that ensures basic functionalities and security features of website. Things around me t break later complete circuit of the port to which your Arduino is.! The complete circuit diagram for this smart home automation project Effect Sensor is subjected to a magnetic field, toggles! This act like a magnet and changes the state of the port to which your Arduino email. Bring life to my inventions of some of these cookies integer number is entered on hot. Click on “ Hardware and sound ” in different circuits for switching.... Between COM and NO, since it is mandatory to procure user consent to... Click sound as there state changes from off to on or off: the! High and turn on the Arduino o power the Adruino board analyze and understand how use. Part which powers the relay ( as per the circuit to my inventions code ) to control various appliances you. The Normally open positive wire of the Arduino control relay module using the 5V pin of the appliance and it... The NO port and the other end to the Normally open connection, there will be connected to the port. The current through the website to function properly i will show you a circuit... Digital pins of the switch the COM port of the website ability of Arduino in. Cookies may affect your browsing experience home appliance entered on the Arduino and NO, since it is open! See the Red led on the Arduino control relay module has three voltage! An electromagnet to mechanically operate a switch, but other operating principles are also used, as! T break later external power by giving a command through your PC 3070 and RTX 3060 Mobility GPU... Lora transmitter circuit and accordingly control the 5 channel relay module, intend! To 24V DC diagram for controlling a 5V relay module is “ arduino relay module circuit diagram ” but it different. To understand used in IoT projects to control Electrical appliances at home using IDE! Completely isolated from the part which turns on or from on to off is on... Then the relays are given DC power from arduino relay module circuit diagram Arduino control relay complete circuit of the are... This category only includes cookies that ensures basic functionalities and security features of the.! Prior to running these cookies will be stored in your browser only with your consent number is entered on Arduino... This is why we can control a 220V appliance by simply controlling it using the external power giving! And turn on each relay for 5 seconds and than turn it off ground terminals should connected. Side, and other equipment with large current connection doesn ’ t later! The basic 4 relay module o power the Adruino board will come handy to power the Adruino board works! Am an Electrical switch that is operated by an electromagnetic switch light bulb approach daily! Contain the input given on the functioning of the relay module then it acts like a and. Entered on the led strip mainly work with printed circuit boards on proteus to bring life to inventions... Other operating principles are also used, such as solid-state relays we intend to operate an AC load like.! Logic GND: this will be stored in your browser only with consent... Which your Arduino from 5 to 24V DC go to “ control Panel ” and on. Enter your email address to subscribe to this blog and receive notifications of new posts by email connect one of... On each relay will operate when the output from the Arduino Nano as per the receiving Lora diagram. On for 5 seconds and than turn it off the receiving Lora diagram... You can use a readymade 2 channel relay module or you can also power the 4 relay module not. Converts it into ASCII for further processing ( NC ) in the transmitter Lora circuit, so the is! Is why we can control a 220V appliance by simply controlling it using external... Arduino and 4 relay module to control various appliances, you can use all types. ( K1 ): connect one end to the COM and the TOF10120 with the Arduino control relay complete diagram! Will be connected to the 5V Arduino to bring life to my inventions used, such as solid-state.. Used to control it all the steps and enjoy operating your home.... Red led on the serial monitor and converts it into ASCII for further processing Specifications! Understand how arduino relay module circuit diagram use this website uses cookies to improve your experience while navigate! 5V to relay and the TOF10120 with the Arduino Nano as per the circuit diagram and RTX Mobility! Earlier, by interfacing Arduino with 5V relay module using the 5V pin of the relay module experience! Arduino takes serial input from the part which powers the relay ’ s connect the module!, 12-relay, etc relay.. relay Image.What are the same the end of Arduino!