Can you help me I want to push 1 switch 1 time 1 relay on, and the 3 relays automatic off

Projects General Guidance
1

i have 4 relay and 4 buttons
I want to push 1 switch 1 time 1 relay on and 3 relays or relay 2,3,4 automatic off and push 2 the relay 1,3,4 automatic off

2

You can refer to Arduino - Button toggles relay. For multiple buttons, you can refer to how to use the button array

3 
const byte ButtonPin1 = 3;
const byte ButtonPin2 = 7;
const byte ButtonPin3 = 4;
const byte ButtonPin4 = 6;

const byte RelayPin1 = 2;
const byte RelayPin2 = 5;
const byte RelayPin3 = 8;
const byte RelayPin4 = 9;

const int ButtonPressed = LOW;
const int RelayOn = LOW;
const int RelayOff = HIGH;

void setup()
{
  pinMode(ButtonPin1, INPUT_PULLUP);
  pinMode(ButtonPin2, INPUT_PULLUP);
  pinMode(ButtonPin3, INPUT_PULLUP);
  pinMode(ButtonPin4, INPUT_PULLUP);
}

void setRelay(int relayPin, boolean buttonPressed)
{
  if (buttonPressed)
  {
    digitalWrite(relayPin, RelayOn);
  }
  else
  {
    digitalWrite(relayPin, RelayOff);
  }
}

void loop()
{
  int currentButton;

  // Find the first button that is pressed, if any
  if (digitalRead(ButtonPin1) == ButtonPressed)
    currentButton = 1;
  else if (digitalRead(ButtonPin2) == ButtonPressed)
    currentButton = 2;
  else if (digitalRead(ButtonPin3) == ButtonPressed)
    currentButton = 3;
  else if (digitalRead(ButtonPin4) == ButtonPressed)
    currentButton = 4;
  else
    currentButton = 0;

  // If a button is pressed, set the relays to match
  if (currentButton != 0)
  {
    setRelay(RelayPin1, (currentButton == 1));
    setRelay(RelayPin2, (currentButton == 2));
    setRelay(RelayPin3, (currentButton == 3));
    setRelay(RelayPin4, (currentButton == 4));
  }
}
4

i appreciate your help

the relay not working

Noong Lun, Ago 29, 2022 nang 11:32 PM, sinulat ni johnwasser via Arduino Forum <notifications@arduino.discoursemail.com> ang:

5

You did not say how the buttons and relays are wired so I had to guess. Maybe I guessed wrong.

6

How the wiring set up .maybe my diagram and wire wrong

7

how the buttons and relays are wired

8

Hello limor91

Take a view.
Many thanks to LarryD

grafik
grafik1224×1108 259 KB

Have a nice day and enjoy programming in C++ and learning.
MIND THE GAP

9

thank you ..

10

thank you ..

11

Hello limor91
See below a small example of a sketch using class-less OOP.
I´ve made an object containing all relevant information like buttonPin, relayPin and etc.
You can add buttons and relays as you like without changing the related service.
Try it and play around to learn.

/* BLOCK COMMENT
  ATTENTION: This Sketch contains elements of C++.
  https://www.learncpp.com/cpp-tutorial/
  Many thanks to LarryD
  https://europe1.discourse-cdn.com/arduino/original/4X/7/e/0/7e0ee1e51f1df32e30893550c85f0dd33244fb0e.jpeg
  https://forum.arduino.cc/t/can-you-help-me-i-want-to-push-1-switch-1-time-1-relay-on-and-the-3-relays-automatic-off/1026635
  Tested with Arduino: Mega[x] - UNO [ ] - Nano [ ]
*/
#define ProjectName "Can you help me I want to push 1 switch 1 time 1 relay on, and the 3 relays automatic off "
// HARDWARE AND TIMER SETTINGS
constexpr unsigned long Blink512Hz {9};     // blinkrate for heartbeat function
// VARIABLE DECLARATION AND DEFINITION
unsigned long currentTime;
// -- objects -----------------------------------------
struct BUTTONRELAY {
  byte buttonPin;
  int stateOld;
  byte relayPin;
  unsigned long duration;
  unsigned long stamp;
};
BUTTONRELAY buttonRelays[] {
  { A0, false, 8, 20, 0},
  { A1, false, 9, 20, 0},
  { A2, false, 10, 20, 0},
  { A3, false, 11, 20, 0},
};
void heartBeat(int rate)
{
  bool myBlink {currentTime & bit(rate)};
  digitalWrite(LED_BUILTIN, myBlink);
}
// -------------------------------------------------------------------
void setup() {
  Serial.begin(9600);
  Serial.println(F("."));
  Serial.print(F("File   : ")), Serial.println(__FILE__);
  Serial.print(F("Date   : ")), Serial.println(__DATE__);
  Serial.print(F("Project: ")), Serial.println(ProjectName);
  pinMode (LED_BUILTIN, OUTPUT);  // used as heartbeat indicator
  //  https://www.learncpp.com/cpp-tutorial/for-each-loops/
  for (auto buttonRelay : buttonRelays) pinMode(buttonRelay.buttonPin, INPUT_PULLUP), pinMode(buttonRelay.relayPin, OUTPUT);
}
void loop () {
  currentTime = millis();
  heartBeat(Blink512Hz);
  for (auto &buttonRelay : buttonRelays) {
    if (currentTime - buttonRelay.stamp >= buttonRelay.duration) {
      buttonRelay.stamp = currentTime;
      int stateNew = !digitalRead(buttonRelay.buttonPin);
      if (buttonRelay.stateOld != stateNew) {
        buttonRelay.stateOld = stateNew;
        if (stateNew) {
          for (auto buttonRelay : buttonRelays) digitalWrite(buttonRelay.relayPin, LOW);
          digitalWrite(buttonRelay.relayPin, HIGH);
        }
      }
    }
  }
}

Have a nice day and enjoy programming in C++ and learning.
MIND THE GAP

12

thank you for the sharing code it working ...i have one question if i added next press turning off the relay

13

To toggle you will have to add StateChangeDetection (see the built-in example of the same name) and will probably want to add debounce. Then you will need to keep track of if the relay is on or off so you can turn the relay on if it is off and off if it is on.

14

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