Man, You were born to teach people, the way You explain is Brilliant! Thank You and please keep doing such amazing videos. God bless You! Respect from Russia.
Well Done!!!This is one of the few videos that start by showing the viewer what is the purpose and will be achieved. WELL DONE!!! It is structured as it should be
Wow, Please help me with my problem with delay in my code digitalWrite(relay1, LOW);// turn relay 1 OFF digitalWrite(relay2, HIGH);// turn Serial.println("M1-CW"); delay(12000); digitalWrite(relay1, HIGH);// turn relay 1 OFF digitalWrite(relay2, HIGH);// turn Serial.println("M1-Stopped"); delay(random(3000,5000)); digitalWrite(relay1, HIGH);// turn relay 1 OFF digitalWrite(relay2, LOW);// turn relay 2 ON Serial.println("M1-CCW"); delay(12000); digitalWrite(relay1, HIGH);// turn relay 1 OFF digitalWrite(relay2, HIGH);// turn Serial.println("M1-Stopped"); delay(random(3000,5000));
I want to write a code as below and I want to replace delay() function with millis(). Please can you tell me how to write code for this? " digitalWrite(column[0], LOW); delay(40); //wait for 40ms before start below statement digitalWrite(column[1], LOW); delay(40); digitalWrite(column[2], LOW); delay(40); digitalWrite(column[3], LOW); delay(40); "
actually there is a limitation. When your code gets long enough, and you have to keep the timing precise, this method does not work. As you can see that he used >= instead of ==, this is because as the loop goes on, it will skip a few count, so the longer it runs, the more errors it accumulates. It does not take long to get a 1000x of millis error and your system's diff becomes apparent.
Professor, I have a request, sir 🙏, there are a lot of tutorials about atmega, Arduino and ESP8266 but *what about AT89s52 [8051 families]??* the AT89s52 is a very basic microcontroller that we read in our college, and my problem is "I'm making a digital clock [7-segment] using AT89s52 (NO RTC) but the time drifts about 5.6 seconds in every hour!! and this At89s52 microcontroller doesn't have any function like millis() inside AT89s52's IDE(Microvision Keil software), and a book suggests to play with the ppm and fix the error.But, yet the problem is At89s52 is not like Arduino , so Professor, I need your help, can u please make a dedicated video on this?? so that everyone will learn a lot, or u can also help me by writing about the solution below 🙏" BTW I'm using a 16MHz crystal with this microcontroller and using timer_0 to generate a 25ms delay and using interrupt_1 to count that 40times so that there will be 1 second completed, but that's not the problem I guess.. I just need your help.. .🙏🙏
like the way you, explain and your voice tone Can you make a tutorial also about the "Control Structures".. which includes if if...else for switch case while do... while break continue return goto
Hello when arduino receive angle (number) from Serail for exemple , the stepper motor dont finish distance to go (stop ) because Serial receive next angle . What should I do for arduino receive and let stepper motor finish distance Simultaneously ?
little bit confused. why "d" hasn't been declare in no one of part of sketch in first example (7segment display counter)? it already been in the "for" loop. and it's it.
this isn't really multitasking and we should stop calling it that. it's more like manual scheduling. which is like one of the worst (if not the actual worst) things about arduino programming.
Multitasking is the ability of a system to execute more than one task in a fashion that is seemingly simultaneous over a certain period of time, and a "Scheduler" plays a crucial part in multitasking. - so when you say that this is just basically scheduling of tasks, you are correct. And this multitasking in Arduino.
@@joedgoh Multitasking has a pretty specific definition in computing. The "tasks" are processes and have contexts associated with them. To actually multitask, you switch contexts. There's no context switching going on here. This is a problem with the Arduino model. You tell people you're mutitasking but you're really not. I understand trying to dumb things down for the audience but there should be a practical limit for how far down you go.
Hi @GoatZilla, this is not to argue with you. But to clarify things, Arduino UNO R3 is not similar to your desktop computer or a smartphone. Arduino uses a very simple processor with "no operating system", so it has no way to load and run multiple programs. Although it can only run one program at a time, that doesn't mean we can't manage multiple tasks. We only need to change how we do things. Because there isn't an operating system to help us, we have to do things ourselves. And that is how we do multitasking in Arduino. Yes it is simple, but with this simple concept, our processor is able to handle several separate tasks while staying responsive. If you don't want to call it multitasking because of the "technicality" of how it was defined in your computer science class in the context of operating system, that's okay. Thank you for your valuable insights.
I'm working on the challenge and I'm having problems on the seven segment display, counting backwards I was able to count from 9 to 0 but when it gets to 0 it does not restart, if I I press the switch it will reset to 9, but when it gets to 0 again same problem. Will it be possible if you post the solutions. Thank you.
You just have to create a variable that counts from 1 to 5 (increment by one every blink using the millis). Then you can add a condition that your blink code should only be performed while/if the counter
This is the kind of explanation I've been looking for for a long time. I'm not even joking, you really did explain the millis function well, cuz I've been struggling with my final year project. But now I realized it was all in the delays. Thank you so much. You've made a new subscriber.
a very elegant way of teaching, like being born to be so. The explanations exceed your reputation, man you live up to your name. huge: LIKE AND SUB. I will be your follower. thank you for your effort
You saved me from many headaches down the road I thank you. I kinda wished I would of got to watch this video before starting my program awww we learning… thank you
would like a lesson about array and 2d array if you have time. Thanks. examples using 2D array with crystal LCD BIG FONTS for Clock. I am just a newbie to Arduino.
Hi, I enjoyed your video on using Millis(), I would like to know if you have or will have a video on State Machines using Arduino. Thank you for any help you may be able to provide.
it seems very useful, but it's a bit confusing for me. Sir, I wonder if I can use it with 2 codes if there is an ''if'' and ''else" statement, for example, I have combined ultrasonic sensor and water level sensor but the program seems can't run properly. Can you help me, sir
It is normal to be confused when you first use this concept. It is okay to use if...else code block. You just have to understand when to properly use it. Using if...else.., only one of these code blocks gets executed at one time. But when you use, if.....if...if..., all conditions could be satisfied and be executed at one time.
@@joedgoh Thank you for your reply, Its my fault I got mistake in typing the code. I did your correction but another error come out (Compilation error: expected ')' before ';' token)
Good Thing I saw this! I have a project similar to this. I do hope you can give me tips and some insights, I really am struggling and already sent to your gmail, Sir. Hope you can help me. Thank you.
