Then, we went into the Arduino IDE and wrote a program that created two separate timed events from scratch. It looks like about every second we’re getting a reading from our light-dependent resistor. What we’re doing here is comparing the difference between the current time and the previous time with our event interval. In the sketch above, the first time loop() is called, the delay(10000) stops everything for 10secs before turning the led off and continuing. What is this line of code: void loop { (A) A statement (B) A single line comment (C) Part of a function definition (D) A banana Answer: C it is part of a function definition (Click to reveal the answer!) But I dont get it where is our carton 3rd eyed alien? Duemilanove and Nano), this function has a resolution of four microseconds (i.e. It's not unlike driving a car when you are teaching someone who has never done it. We want Event 1 to read the LDR and then display that value every 1 second. great work Michael , really have to work my old brain , but after working through these 6 Videos feel I have a good handle on it Have you ever wanted to do MULTIPLE timed events with Arduino? http://www.element14.com/community/message/129449/l/re-multiple-arduino-functions-without-delay. Find anything that can be improved? Let’s look at a slightly more interesting blink variant that has a different on-time and off-time. There is more detail in that discussion thread. We hope you enjoyed this lesson. Let’s write our algorithm. Well, bear with me if memory serves and most of the time, the vast majority of the time it does what we’ll do is: we’ll have a power supply here, cetera 24 volts, because I remember these numbers and we have a in Arduino microcontroller here. Both Timer0 and Timer2 are 8-bit timers (can count from 0 to 255) while Timer1 is a 16-bit timer (0 to 65535). Arduino | Run 2 Function at the same time. Doing multiple timed things with Arduino: Unleash the millis()! Doubts on how to use Github? Then plug in the other jumper wires like this: First, plug a wire from 13 on the … If any of this is looking foreign to you, please make sure to check out the previous lessons because a lot of this code has already been explained. Re: How can I run multiple loops at the same time with an Arduino? Arduino Timers. Now let’s get into the loop. As seen in the previous part of this course, an Arduino sketch consists of two main functions called setup() and loop(). We can work through these one by one. Here’s a quick rundown: In part 1 we described the basics of the millis function in general, in part 2 we talked about tight loops a… As previously mentioned, we want to read and display the light-dependent resistor value every 1,000 milliseconds. I have updated the post to include the full sketch (it’s toward the bottom of the post. The sensors are always going to be at these pins, i.e. Luckily for us, we are using the millis function instead of the delay function, which would make this MUCH more difficult. If this first line of code is confusing try running some numbers through it. Next let’s setup variables for the timed events. So, we’ve created a variable named currentTime and it is equal to the return value of millis. The toughest part is just wrapping your head around the ‘if statement’ condition. Next, we are going to set up the timing for the first event. Quick Quiz #2! First, we mapped out what we were doing just by writing out our algorithm before we actually get into the code. int LED1 = 12; int LED2 = 13; int … The control expression for the loop is initialized, tested and manipulated entirely within the for loop parentheses. I was wondering if it would be possible to run 2 or more loops at the same time with an Arduino. Viewed 25 times 0. Really, we’re just going to repeat the code from Event 1 almost exactly, just changing the names of the variables. So first of all forget this vision. Basically I want my IR() loop to be always running so that at any point in time I provide a signal to the receiver, it will print something. This is part of a mini-series we’ve been publishing that’s all about using the Arduino millis function to create timed events. Download … I want to show two reads of two sensoron seven segment alternately in ten second. Looking at this it appears we could use the Arduino millis () function to set up the timing for these events, and we could use analogRead () to read the LDR and the temperature sensor values. Every time through the loop it’s going to be updating it again and again. If you’re still confused, definitely check out our last lesson, Arduino Sketch with Millis () instead of Delay (), which explains this explicitly. The do while loop is always run at least once before any tests are done that could break program execution out of the loop. How can I run multiple loops at the same time with an Arduino? Microcontrollers are good at repetitive tasks but instead writing out the same code many times, the for-loop repeats a section of code a specific number of times. We’re “upping” our game with this lesson, so buckle in and hold on tight! Or 2 buttons for control servo and LED independently ? What about multiple CONCURRENT timed events? Off the top of my head I couldn't say if a while or for was more efficient, but personally for a fixed number of iterations I would go for a for loop, if I had to do a while loop then I would set I to zero so I could do (i