I have an Arduino project to create two automatic doors. I use DC motors and limit switch sensors to control the doors' forward and reverse rotation (opening and closing). The open and close positions both have limit switches and initially the two doors are closed, with each one triggering its respe…

After much hard work, the following code is the effect I want, although many flaws remain. Thank you for your valuable opinions. #include <Adafruit_NeoPixel.h> #include <Arduino.h> #include <FastLED.h> int switchAPin = A2; // door open int switchBPin = A3; // door close int motorPin1 = 5; int …

Plus 1 for a state machine. Start by drawing a state diagram, which means every possible state the system can be in. For example, one state would be both doors closed. Another would be one closed other open. Then join the states with lines showing what has to happen to get from one state to another…

Here [image] rayli_kwong: the first door opens and waits for 10 seconds before closing. If someone approaches again during this time, the door will open again. The door is open already. Do you mean the 10 second timer should start over again? If you can tell us without then having to kill i…

You have started multiple topics with the same subject. You should post one topic and use both Chinese and English. 您已使用同一主題啟動了多個主題。您應該發佈一個主題並使用中文和英文。 https://forum.arduino.cc/t/topic/1275826

@rayli_kwong , Your other topic on the same subject deleted. Please do not duplicate your questions as doing so wastes the time and effort of the volunteers trying to help you as they are then answering the same thing in different places. Please create one topic only for your question and choose …

Typical application for a good flow chart so that ALL possibilities are covered. Then write code to cover all the above. As it stands, I for one can see quite a few possibilities not thought of.

[image] alto777: Here [image] rayli_kwong: the first door opens and waits for 10 seconds before closing. If someone approaches again during this time, the door will open again. The door is open already. Do you mean the 10 second timer should start over again? I understood OP meant « i…

You may find these resources useful [image] skillbank: Experiments and projects with an Arduino microcontroller Program design methodologies showing how to use state diagrams; and [image] Beginners: using the switch - case statement Introduc…

Yes, I know. I am just trying to delete the Chinese version. Sorry about that.

+1 for state machine Also describe all parts physical and in software. Variables with saved state states and timers are parts. The timer part has complexity more than countdown. The state of each door is more than limit switch state. When all the parts are defined then interactions can be descr…

[image] J-M-L: I understood OP meant… Yes, THX. I could almost say of course. The reference was to me not even ambiguous, but now I see it is, cough!, to me, ambiguous, and your interpretation seems correct. That's a nice thing about computer programs. And here a reminder that when describin…

The forward and reverse problem of the two automatic doors with DC motors and limit switch sensors

Projects General Guidance

johnerrington June 27, 2024, 6:50am 9

You may find these resources useful

showing how to use state diagrams; and

with some simple examples of state machines

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The forward and reverse problem of the two automatic doors with DC motors and limit switch sensors

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