Hi, I have a problem with my sketch and can't find the error. I am using an Arduino Uno Wifi Rev2. Firmware etc. are all up to date. In my sketch I make a motor keep turning after certain conditions. However, when I press a button, I want the motor to move back to position 0, but after a predefin…

here is a code-version that should do what the description above is. This code keeps the repetetive character of your original code. The code can be much shorter by using arrays. Then you would store the times and the position into these arrays and then just iterate through the elements of the arr…

What do you mean with "your own words"? Sounds like a learning task at school :sweat_smile: If the button is pressed or not set to "high"... Query whether "waitAtPos0" is already active (defined as false at the beginning) Set "waitAtPos0" to true Start the counter in milliseconds Set position to …

[image] say2k: Correct? almost. There is a tiny tiny but very important detail that reverses the logic: This tiny tiny detail is the not-operator. Huh where does the not-operator hide? The not-operator is the attention-mark ! the not-operator simply inverts the logic value not false …

[image] say2k: Start the counter in milliseconds I might consider this as "reset the timer" or "update the waiting time start", since the millis() counter part of the timer is always running, and how use use millis() is to compare its count to a starting time. Then from: [image] say2k: …

I am a friend of a well readable code, so you can save yourself an additional comment. For example: if (variable == true) doSometing(); or if (variable == HIGH) doSometing(); Have a nice day and enjoy coding in C++.

Thx all for your answers und help. I'm resigning a little bit right now. :confused: For me as a newcomer, that's a lot to understand. :weary: I think I have understood the theme of the "!" as a reverser. It sounds quite complicated to me compared to the == method. I removed the following code. i…

[image] paulpaulson: if (variable == true) doSometing(); Yes this is easier to understand as all details are obvious

[image] StefanL38: if you remove this if-condition and keep all the rest // check if button is pressed if (digitalRead(PIN_BUTTON) == HIGH) { // if button IS pressed waitAtPos0_active = true; // set flag-variable // store snap-shot of time right in the moment th…

Thx. Thank you very much! Maybe I also made a mistake in thinking about it. I added a Serial.Println to the code once for me to learn. The counter is only displayed in the serial monitor when the button is pressed. Then the timer just keeps running up until the button no longer has status High. T…

[image] StefanL38: the fact that timer millis() is counting up more and more is handled correct by the code even if millis() has a rollover. This is done by calculating time-differencies with unsigned integers. [image] Example-code for timing based on millis() easier…

Thx a lot again! I have read further into the subject and understand more and more. Of course, it will take quite some time until I have learned everything. I'm new to the subject. But I have already been able to add my own if loop with time to my sketch. So far it seems to work. Thanks for the h…

Timer0_mills error

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StefanL38 April 26, 2023, 6:54pm 26

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Timer0_mills error

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