how to run a loop according to two different Learn more about loop. Arduino Counter Loop. Wiring one switch for multiple lights [ 2 Answers ] I understand the wiring for a single switch for a single light but what do I do with multiple lights on the one switch without making the whole circuit run off that switch. Running multiple statements. Many of the main stream Arduino boards can be used as a controller to become the middle man between the computer running Vixen Lights and the actual RGB Pixel Strips. I have removed the username and password. It uses queues to send data from one loop to the other. With the rise of Frameworks, Python is also becoming common for Web application development. If you run the same in 10. Running two loops at the same time ? moving and traveling using loops. Hi, I have 2 arduinos, 2 motor shields, and 2 stepper motors. Large linear actuators traditionally have five wires. But in this case, the answer is "definitively yes", as the other loop is empty. Please help. FreeNode #arduino chat logs for 2013-10-17. For two-rail blocks, run at least one pair of wires from each track block to the center poles on a DPDT toggle switch or rotary switch if you are using more than two cabs. As someone already pointed out, it requires the subsequent iterations to be independent in order to run in parallel. With single webcam, RPi works fine. For example, the formula =SUM(2,2)&" "&SUM(5,5) returns the text string "4 10". I simply have a problem doing the 2 things serially, and there isn't enough optimization possible anywhere to do it on a single core system (which is that the ESP32 is when running Arduino when both I2C and Bth run on the same core, de facto). The bulk of this post is cut/pasted from our local DSBC site where I recently had posted it. Outer loop run 2 times, so inner loop run total of 4 times 24. Introduction The objective of this post is to explain how to use multiple HTTP server instances on the…. Hi, I have 2 arduinos, 2 motor shields, and 2 stepper motors. Currently I'm doing a rather large project which polls all 16 analog inputs of an Arduino Mega repeatedly. In this tutorial, you'll learn how each part of that sketch works. It is also week 2 of the Couch to 10k programme, anyone can join in with this programme at any time, so don't think that if you missed last week's run you can't come along. I have another strip on which I want to run a comet pattern continuously while intermittently changing patterns in response to cloud events. Arduino IF Statement Code Examples. For you to compile and run any Java program on your machine/computer/pc, you should have installed Java on it. I really did not. StealthyGamingYT on QUICK FIX: Game starts with a black screen after the first time I run it - Cannot proceed!. Point 07 — Run On Real Board — Arduino UNO. However, please be aware that if you continuously send mBot’s message, it will stall after a period of time. Consolidationkey. For the third time, the value of n is increased by 10. If you have an exhibit or display layout, why settle for one continuously running train when you can have two trains? This page shows how to run two model trains on a single loop of track in the same direction. Recovery Centers of America at Bracebridge Hall hosted a forum where three people shared their stories about opioid addiction and recovery March 5 at Volunteer Hose Company in Middletown. These applications include -- but may not be limited to -- Excel, Word, and PowerPoint. An example Arduino sketch that makes use of the protothread library to run two processes in parallel. But my problem is, I have to make multiple balls move at the same time. I have downloaded software for my Linux or Unix-like system from the Internet. Disconnect the battery power wire leading to the Vin terminal on the Arduino Mega 2560 board since the board will get powered via a USB cable. Please post simple instructions, as I'm new t. Is it possible to run two different animations on two different LED strips concurrently from the same photon? For example, I have a strip on which I want to run a torch animation continuously. Automatic DCC controler with Arduino for a small coffe table layout. i have int value in my arduino. hello every one, how to create two counter loops that start at the same time in matlab editor and gets applied on given code at the same time using for loop??. Luckily, there is a very easy to use library to implement software serial connections. Headed to Tillinghast instead, where I could easily bail or run shorter loops. Running the same Forex EA on multiple charts. Arduino UNO or Leonardo( I am using Leonardo) 2. Yes, you can, via an RTOS: Using FreeRTOS multi-tasking in Arduino The example code essentially combines two different sketches that (virtually) run separately. Thats all from the tutorial DC Motor Speed Control using Arduino UNO. if a character has been sent from the Serial Monitor window and received by the Arduino. Lesson 2: Basic Loops. by Lewis Loflin. The genre started roughly a decade ago. hole for the LB and conduit. how to run a loop according to two different Learn more about loop. When you run a Python script, the interpreter converts a Python program into something that that the computer can understand. Hot dog — it’s that time again! Next Sunday, we’ll be doing our ninth Snoopy’s Social Run to raise money for SPCA of Wake County! It’s a five-mile social run from Snoopy’s at Meredith College to Snoopy’s downtown to Snoopy’s on Wake Forest Road, with a complimentary hot dog at each stop!. \$\endgroup\$ - bigjosh Mar 12 '15 at 23:25. Also, they need not rotate at exactly the same speed, there can be slight variation (15%). 5 Volts steppers with external power source are used. How do I run an. Outer loop run 2 times, so inner loop run total of 4 times 24. Hi! I am building a robot-ish project in which a raspberry pi 3b runs an arduino uno master-slave which in turn operates 2 servo motors. Arduino Software (IDE) pre-1. So my suggestion for you is to either use a different brand of servos or use a different PCB. Put on your hard hats, girls and boys. Though it's not common to see an array of more than 3 dimension and 2D arrays is what you will see most of the places. Hi, I think you want to selectively execute two different sets of logic in the loop. Otherwise, you could run into hard to track down timing bugs. The same statement will be printed on the LCD as well as shown in the figure below. 1: Modules to be used. The "same time" in programming usually doesn't mean two processes running exactly the same time. I think that what the OP wants to do is start a number of things going on simultaneously. Dont want to make this eye blinking in every animation loop seperatly, so just once and blend them with other animations during time. Speaking for the 328p: Aside from some peripherals that can run independent of the core (PWM, USART, I2C, etc. Feed separate circuits through the same conduit. The "run()" method also supports an optional parameter (a vector) that dictates which tests to run (e. Currently I'm doing a rather large project which polls all 16 analog inputs of an Arduino Mega repeatedly. Hello! I want to know how i can run two VIs at the same time. One thread may race ahead of the other, one may even complete before the other gets started, and it will be different every time you run the VI. The really important thing to remember is that the transitions (turn LED on or off, or set brightness up or down a level) take a tiny amount of the time available, leaving plenty of time to do other things. Here is the code snippet. Shell scripts run the commands in the order they are given, so the first backgrounded command will run before the second if only (in nearly all cases) very slightly. 0 ⋮ loop; Discover what MATLAB. conduit connector into the back of the LB and then attach a piece of 1/2-in. Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers. By some, referred to as Neopixel, this can take creative projects to a whole new level. Put your young engineers on the fast track to learning with Lionel G-Gauge trains. In this part of the Arduino programming course, we look at another kind of loop called the "for" loop. The DC motor in your Arduino kit is the most basic of electric motors and is used in all types of hobby electronics. And then insertion sort on the same data set. Same as Activity #2. I was reading them all with only a single 1mS delay in the main loop and was noticing several odd analog reading problems, especially with A14 and A15. Home > The Forums > So Much Gear, So Little Time Playing two guitar amps at the same time Gearslutz is part-supported by our visitors. How to run the scripts during the boot using SManager: Steps to run the scripts during the boot: 1. Put on your hard hats, girls and boys. However, please be aware that if you continuously send mBot’s message, it will stall after a period of time. See the problem is the board is over heating because two servos use a lot of power. Written and compiled by Brian W. Everton Fonseca. To fix this, we will need to add another variable called 'totalTicks', which will add the encoder values every time the. Regular one-on-one puppy time is always great for strengthening your relationship. FOR /F processing of a command consists of reading the output from the command one line at a time and then breaking the line up into individual items of data or 'tokens'. Run your DLL. Minibloq” aims to do the same thing with the Arduino. London, 1985. As you surmise, the scripts won't begin execution at the same instant down to the clock cycle. The while Loop The sketch that follows does exactly the same as the for loop sketch from part 7 of this course, except that it uses the while loop so that we can see the similarities between the two loops. Running 2 trains simultaneously would be much easier with 2 separate loops. Bourne shell for loop is. The two main product lines continue the six-month tick-tock cycle of updates, and I’m expecting the same to happen this year (although if 5G appears in the main handsets then a specific variant. The Sweep sketch You need: An Arduino Uno A servo Jump wires The wiring for a servo is extremely simple …. once you've had that stuff running in the loop, almost impossible to. You should see the program open within a few seconds of entering the command. You can see the reference page for the while loop here. It is generally used to initialize the loop variable. How to run two different objects at the same Learn more about mov How to run two different objects at the same time in different loop? Asked by Rizwan Shahid. When a loop is nested within a loop, the inner loop will fully execute each time the outer loop executes once. The button is connected to the pin 2 of the Arduino which is set to INPUT_PULLUP so there is no need for a resistor. Bourne shell for loop is. I'm running Gentoo Linux (source-based distribution) and from my experience i can say that (with more or less recent hardware) n*2 + x is the best value. So now I'm adding small items a bit at a time and trying them out. The reason is a program you launch from the shell shares some common resources with the shell, notably its session and terminal. But, if I run the following, only the last MyBlock to be wired works. @tmccann parallel run with the above bash file you mentioned , each collection runner will run parallel or one after another ? I created window batch file to run it but it is running one collection at a time. Only on selected events. Alternatives. how can I start two loops? so they start at a certain time and not by the very beginning of the code how can I start two loops? | SoloLearn: Learn to code for FREE! COURSES. I have this working (mostly ). After uploading the code you also need to power the Arduino, This allows you to easily control 2 or more stepper motors at the same time. However, my PSU just has one output (that I know of). But Niall McCormack is clearly not the type of guy to let a small detail like a bug causing. In this blog post, I’ll show you a quick trick to use when you have lots of structured data to store in EEPROM. Modifying/Accessing the UI can only be done on the UI thread, matlab main thread. At the same time, you always hear people say shit like “marry your best friend. Here's the head scratcher. It would go from the. I agree that you can interup the flow of execution to allow another process to run but you can not get both processes going at the same time. This statement says "Dear Arduino. Up until PowerShell 7. If you face any sort of problem, you can ask me anytime without feeling any kind of hesitation. Unlike runShellCommand(), runShellCommandAsynchronously() is not-blocking. – deb0ch Oct 22 '19 at 11:25. We had perfect weather and I got to run with a lot of good friends. For BOE Shield-Bot navigation, we need to control both servos at once. Executing a Python program can be done in two ways: calling the Python interpreter with a shebang line, and using the interactive Python shell. So I guess the 2nd ball can only start moving after the first loop of the first ball ends (which it is not supposed to). Please help. I've done a few variations of this. Regression models with multiple dependent (outcome) and independent (exposure) variables are common in genetics. You can start the continuous servos running and they will continue until you get a signal from the proximity switches; and then turn them off. About 1/2 mile in, with soreness in both knees and compensating for it with a weird gait, I had prematurely made up my mind I would run a 2-mile loop and call it a day. "Fun Run" is the first and second episode of the fourth season of The Office and the 54th and 55th episode overall. submit_request: 1) Item Attributes 2) Vendor populate Thanks. Range(Array("Picture 2")). Set the address of the I2C Motor Driver. Run a shell script in a loop with max number of threads hi guys. Bash can’t declare function parameter or arguments at the time of function declaration. Hi, I understand how you can run all macros at the same time with one macro button but how do you do it one at a time. I'm running Gentoo Linux (source-based distribution) and from my experience i can say that (with more or less recent hardware) n*2 + x is the best value. In that sense, the way the Servo library works suits that purpose. An optional RELAY driver output is available at pin 4 of the Arduino board. Is it possible to run another server instance on the same machine simultaneously, perhaps out of a different port, without them interfering with each other?. I was wondering if there was something like this for Autoit as well? I just star. Python is a popular general purpose dynamic scripting language. We need to lose the loop too. We had perfect weather and I got to run with a lot of good friends. 5 Volts steppers with external power source are used. That, says Paul, Try to run each loop at the same pace, within five seconds. In the last two loops, the code within the for loop is executed 1000 times, which results in 1000 steps or 5 revolutions. I've done a few variations of this. Run the SQL Server installer from your installation media and it will guide you through the process of creating another instance. He wanted a way to run the same batch file on all workstations at login time that would locate the IP address of the local file server. OPERATING TWO SERVO WITH ARDUINO: The Arduino can control two servos with the same ease as one. In every loop, the now variable is updated with the current time. Both while loops have different function, for loops repeating time and waiting time. After uploading the code you also need to power the Arduino, This allows you to easily control 2 or more stepper motors at the same time. Copy the code below into a standard module in your Visual Basic project. At the same time, you always hear people say shit like “marry your best friend. Use your language's "for each" loop if it has one, otherwise iterate through the collection in order with some other loop. The MotorControl sketch To gain control of the speed of your motor whenever you need it, you need to add […]. sh file to install the software? How do your run. 7 we use a FIFO queue. If so, you go next state which writes tp pulseopto1 and gotes to WAIT_STATE_2 for example again setting start time to current time. But sometimes, an external factor may influence the way your program runs. In the src directory, we will keep. Use duck2spark. For loop syntax for( ; ; ){ ; } The initialization statement is executed before the loop starts. ino After setting up the Arduino IDE load the example "DigisparkKeyboard" and replace the Sketch source by the one saved to sketch. I-610 East Loop NB and SB at. Multiple macros can be combined into a single macro, so the user only has to run this master macro instead of all the individual macros. To stop a running script. Once you have mastered the basic blinking leds, simple sensors and buzzing motors, it’s time to move on to bigger and better projects. It is easy to debug the looping behavior of the structure as it is independent of the activity inside the loop. above is pret. The questioner asked how to fit the distribution but also how to overlay the fitted density on the data and to create a quantile-quantile (Q-Q) plot. Operating Two Servos with the Arduino. The 20 best Colorado running races of 2020, from scenic 5Ks to a 62-mile ultra Also this year: A new Boulder marathon in October with a finish on the Pearl Street Mall. It is likely that you will see the game pinned to the task bar, and in a minimized window. i've got a rumba board, the one with jumpers on the motor drivers (not dip switchs) its the £50 board. This page shows how to run commands or code in parallel in bash shell running on a Linux/Unix systems. 1) If anyone has suggestions, please help me!. txt) or read online for free. Less Parse / Exec and CPU time. You can have a look at java. I've done a few variations of this. Drag And Drop Programming Gets Kids Started Early. The bulk of this post is cut/pasted from our local DSBC site where I recently had posted it. 8 batteries total. Review old investments — and look for missing money After the dramatic market run-up and turbulence that followed, there's no better time to rebalance portfolios and reassess risk. hole for the LB and conduit. We have the exact same statements in the for loop as before - we set thisPin equal to 0, the condition is thisPin < pinCount, and we increment thisPin by 1 each time through the for loop: //Next time through the for loop. It's a kind a exe files that starts in windows' window. Then drill a 1-in. By connecting an L298 bridge IC to an Arduino, you can control a DC motor. The Scheduler library allows the Arduino Due to manage multiple tasks at the same time. Added ability to easily select if this library should use timer0 or timer1. Interrupts in Arduino works same as in other microcontrollers. Sometimes you want everything in the program to stop while a given condition is true. Please try again later. Various boards have different hardware limitation such as processor speed, memory (RAM) size and storage size. Making the CPU wait 10 seconds is not efficient, but the Arduino CPU can only execute one instruction at a time. How do loop run 60FPS on qml?. And I have installed busybox. I have one dc motor to control! that should be a problem! i would love to change your app so there were 4 buttons !2 of them just the way it is – on a push it sends a comand but 2 of them would be working like so – when i push it and hold it – it would send letter A to arduino and on a release it would send lower case coreseponding comand. The videos, some of which were taken near Wangaratta in northeast Victoria, are on the same route as last Thursday’s rail. The break should be for 2-3 weeks and during this time you should take a break from running for 3-4 days and then come back to running by building up to distance runs without any quality sessions [ The Off Training Period followed by The Build Up Period]. An example Arduino sketch that makes use of the protothread library to run two processes in parallel. Insertion sort however reduces to O(n) if the data is sorted. See the problem is the board is over heating because two servos use a lot of power. There is no need to hit start/stop on both systems at the same time - LiveTime does it for you. The second and fourth statements are the same, and have something to do with a delay. Connor McMillan and I run the long run stride for stride. Patterns, sets, groups, oh my! Now that we have so much control over what our patterns find and what we can create from the Match es we get back, let's look at a way to turn regular expressions into a variable and then loop over our results. If hooking 2 receivers to 1 transmitter is possible, would this mean I could forgo the extra 6 channel receiver for surface system to a 2 channel receiver for the 6 channel transmitter? Many thanks! Assuming you are talking about a 2. Have the DLL. Two Port Receive Arduino and Genuino boards have built in support for serial communication on pins 0 and 1, but what if you need more serial ports? The SoftwareSerial Library has been developed to allow serial communication to take place on the other digital pins of your boards, using software to replicate the functionality of the hardwired RX. There are several ways to stop a running script. Both the motors are identical (electrical rating, manufacturer, load). last edited by. One way (probably the easiest) to make a for loop parallel is by using OpenMP and it's pragma omp directives. About 1/2 mile in, with soreness in both knees and compensating for it with a weird gait, I had prematurely made up my mind I would run a 2-mile loop and call it a day. I want to execute this "string" at the same time one underneath the other? what's wrong? C# Run two methods at the same time. Picture: Andrew Henshaw. If this address doesn't work, you can run an I2C scanner sketch to find your OLED address. After these kickspace heaters, the rest of the loop is 1/2". The 9V battery, especially a rechargeable one won’t last very long. When the new web browser window appears, enter a different web address in the address bar. –In the Arduino Editor, re-run BatchMix. C++ - How can i run 2 functions at the same time. A firm favourite of Running Club, is our Tesco loop. ZOrder msoSendToBack and ActiveSheet. bat running, and 2. com/answers/000004726. Once you have mastered the basic blinking leds, simple sensors and buzzing motors, it's time to move on to bigger and better projects. Turns out it's not too tough and extremely cost effective if you want to put the time in. The Arduino for loop is one of those bread-and butter functions that you will use all the time in your code. Run two Loops Simultaneously on Arduino. We had perfect weather and I got to run with a lot of good friends. should I create 2 VIs, and run them at the same time? or would two parallel loops be better (I. Run two for loops at the same time. We will show how this is actually hardwared together. 6: For Loop is not working for all Objects. A Strathaven man’s hopes of running the 2020 Tokyo Marathon were dashed by the coronavirus last week. While there is the parallel computing toolbox or workarounds to run multithreaded code in matlab, these won't help in your case as you want to modify/access the user interface (display and keyboard input). The only way(in my mind) is to make a separate script for the second loop. #arduino IRC Archive Gunna have to run 2 power rails I guess Could you do a manual reset around the same time you. Arduino IF Statement Code Examples. Use hookup wire to connect the Arduino power to terminal block for the red wire and ground to the white or black wire. sh files from command line?. If you cant find RCA female plugs, then simple grab an two old audio RCA cable and cut them. can even build a larger layout and run multiple trains on the same track. ruckuswireless. Whereas statements or code in the Arduino main loop will run continually and never exit the loop, the for loop allows us to loop through code a certain number of times before exiting the loop. In Excel 2010 and prior, workbooks open within a single parent window (i. Can i run two or more loops at the same time? Hi, I'm getting to have fun with starting programming my PIC device! I have done some beginner stuff like light / flashing a LED, reading inputs, etc. Otherwise, you could run into hard to track down timing bugs. I have another strip on which I want to run a comet pattern continuously while intermittently changing patterns in response to cloud events. For more information, consult the man page of time. Initially, I merely waned to write a post about careless use of the SET key can be fatal to stuff connected to this unit. Today, I am going to give you a detailed Introduction to Arduino Nano. DC motors normally have just two leads, one positive and one negative. Can i run two or more loops at the same time? Hi, I'm getting to have fun with starting programming my PIC device! I have done some beginner stuff like light / flashing a LED, reading inputs, etc. 1&2 port is still working on the motorshield. The old default used to be timer0. Last week was the Hall Effect sensor and this week the relay. pdf), Text File (. I have been testing it for a bit and I can guarantee that all the commands in the command block minecarts are effectively run in Minecraft 1. Once you've got something on the display for your Arduino Clock Project, it's time to read the time from the RTC module and display it. In the main loop, the sketch below reads the value of a photoresistor on analog pin 0 and uses it to fade an LED on pin 9. Hello all, welcome to my little year in review that laid waste to 6 rear tires. See the problem is the board is over heating because two servos use a lot of power. This will allow the motor(s) to run and lights to blink all at the same time. The course is mostly paved with sections of gravel trail as well as grass. Here is the code snippet. What is the best place/way to search for it?. 4 radio such as Spektrum, there's absolutely nothing to prevent your binding two receivers to the same. This exe application process a single file at a time and I would like to run this program multiple time so it will process 8 files simultaneously. 2 Team Run= 1 laps each. Welcome to RobotShop's 5 Minute Tutorials. When A1=0, then save the data and create a line trend graph from the two readings. I've started experimenting with Arduino and I've run through all the projects that were in my "Learn Arduino Basics" pack. can even build a larger layout and run multiple trains on the same track. Shell scripts run the commands in the order they are given, so the first backgrounded command will run before the second if only (in nearly all cases) very slightly. For every time the while loop runs, the value of the counter is increased by 2. There is a file called install. I understand that I can run two simple programmes at once using millis() functions, but does anyone know how I can run two big functions at the same time, almost like if I had two 'for' loops running simultaneously. "Fun Run" is the first and second episode of the fourth season of The Office and the 54th and 55th episode overall. Two friends of the opposite sex blur the lines of their feelings. I simply have a problem doing the 2 things serially, and there isn't enough optimization possible anywhere to do it on a single core system (which is that the ESP32 is when running Arduino when both I2C and Bth run on the same core, de facto). 2: Parallel bot run on same queue. It sounds like you need to look at inserting your fading led updates within the LED strip loopsthat will probably solve your problem. I have 2 for loops in a function, doing different jobs and running one after another. PREFACE So, this little low cost ($15USD) MingHe B3603 DC/DC buck unit has been getting some interest here. Hi, I have 2 arduinos, 2 motor shields, and 2 stepper motors. Continuous or at Least Near-Continuous Integration. In the main loop, the sketch below reads the value of a photoresistor on analog pin 0 and uses it to fade an LED on pin 9. The instructions below cover all the main steps of the p. com/answers/000004726 http://supportqa. For instance, this example blinks 6 LEDs attached to the Arduino or Genuino by using a for() loop to cycle back and forth through digital pins 2-7. Make your Arduino walk and chew gum at the same time. After these kickspace heaters, the rest of the loop is 1/2". If you have an exhibit or display layout, why settle for one continuously running train when you can have two trains? This page shows how to run two model trains on a single loop of track in the same direction. Executing a Python program can be done in two ways: calling the Python interpreter with a shebang line, and using the interactive Python shell. Learn vocabulary, terms, and more with flashcards, games, and other study tools. Object 2 increments the form's Value property to 3. PREFACE So, this little low cost ($15USD) MingHe B3603 DC/DC buck unit has been getting some interest here. Toggle Main Navigation. I was wondering if there was something like this for Autoit as well? I just star. Animatronics hand. 0) is executed is a. Each function runs one at a time. Could someone please help me along a path to the solution of this question? I need to run two motors at the same time but the example program provides only one control, I have tried editing the example to no avail. This Arduino Linear Actuator Tutorial shows how to do basic control of a large linear actuator using an Arduino and two buttons with each button preset to a position. In this video I demonstrate how to make 2 LEDs at different speeds. Whereas statements or code in the Arduino main loop will run continually and never exit the loop, the for loop allows us to loop through code a certain number of times before exiting the loop. 8 videos Play all Arduino Fortgeschrittenen Tutorials MaxTechTV Arduino UNO R3 (original) compared with two CHINA UNO R3 clones (german video) - Duration: 10:08. In this blog post, I will show how that can be done. That doesn’t mean that we can’t manage multiple tasks on an Arduino. In any case the for loop has required the use of a specific list. zip file containing the library and click Open. Run 2, Statement 2: but we can work around this using STUFF and XML to get the same query. SQL Developer Team. Hot dog — it’s that time again! Next Sunday, we’ll be doing our ninth Snoopy’s Social Run to raise money for SPCA of Wake County! It’s a five-mile social run from Snoopy’s at Meredith College to Snoopy’s downtown to Snoopy’s on Wake Forest Road, with a complimentary hot dog at each stop!. (7) Click “Upload” to upload the program (around 1min). But I think this will just result in 1. I think that what the OP wants to do is start a number of things going on simultaneously. a while loop is running which checks for collisions and moves the character accross the board. The objective of this post is to explain how to use multiple HTTP server instances on the Arduino core, running on the ESP32. This means if you need to pass values you need to use global variables. Arduino - Ifâ ¦else if â ¦else statement - The if statement can be followed by an optional else ifelse statement, which is very useful to test various conditions using single ifelse if statement. Control DC motors with Arduino. You can have two web servers running in your ESP at the same time.