-SETUP (Sets up the pins at startup/reset) Unsigned long pumpTimerMillis1 = 0 // Stores the times when the float sensors were last triggered Unsigned long currentMillis = 0 // Stores the value of millis() in each iteration of loop() after the float sensors no longer detect waterīyte pumpState1 = RELAY_OFF // Used to record whether the pumps are on or offīyte pumpState2 = RELAY_OFF // (default to HIGH/OFF) These #defines just help keep track.Ĭonst int pumpRelayPin1 = 12 // Pin numbers for the pump relaysĬonst int floatSensorPin1 = 7 // Pin numbers for the float sensorsĬonst int pumpDuration = 500 // Number of millisecs that the pumps run #define RELAY_OFF 1 // and off when HIGH (1). Which can be used to create a time base for various events in your applications (like LED blinking or whatever). #define RELAY_ON 0 // The pump relays are active-LOW on when LOW (0) The Arduino millis () is a timer-based function that returns to you the time elapsed (in milliseconds) since the Arduino board was powered up. -Edit these if you need to change the pin layout or pump duration
ARDUINO MILLIS TIMER CODE
How can I eliminate the code duplication? I believe I could use arrays and for loops but now I've entered another grey area for my knowledge level. I don't like that I've repeated so much code in the readFloatSensor functions, but this is where I am so far. I may not need to touch this code again for years and years (or a new house owner may need to look at it should I move out), so I tried to comment it as much as possible. Study the BlinkWithoutDelay example in the IDE. When you have finished, subtract the recorded time from the current time, to find the elapsed time. Using info from every suggestion, I've so far come up with the following. Use it as you would use the clock on the wall. (set timer to 300, and delay to 100ms) for better result. You might use unsigned chars to preserve extra RAM.Using interrupts should make it even more efficient. It is then used to subtract from the set time value and is converted to a Digital time format. The code uses millis () function of the Arduino to calculate the time, the millis () returns the time in milliseconds passed since the board is ON. It's not the neatest thing, but it will do. This is a basic code for countdown display in the format HH:MM: SS Hour:Minute:Second. Which might also be for the sensor inputs. Personally, I think, handling the timing events in an interrupt is way better.
You might use something like this: #define AMOUNT_OF_TIMERS 10 But now the arduino stops after a couple of hours. Ive done it exactly like the example 'BlinkWithoutDelay'.
Please note that the Scheduler requires yield() or delay() to switch between the tasks. In my program ive used Millis () instead of delay for my program to run every 2 minutes. Scheduler.start(setupController, loopController) While (digitalRead(sensorPin) = LOW) delay(DEBOUNCE_TIMEOUT) Belows is the logic for a single sensor-relay pair with a state trace to serial: #include Ĭonst uint32_t TURN_OFF_TIMEOUT = 30000L Įxpanding to three sensor-relays becomes: #include Ĭonst int sensorPin = The Timemark library provides a solution. The "blink-without-delay"-pattern shows how this can be solved but with several time periods and logic this becomes complex.
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