Usage Example for Arduino-Multi-State Signal Trigger

• Control the transmitter to emit a variety of signals

• Take Arduino as an example, the other main controllers use the same principle, only need to connect to the corresponding digital port.

• Take inching mode in the receiver as an example, the principles of other modes are the same

Hardware Preparation

• DFRuino UNO R3 + Gravity: IO Expansion Shield x1
• Wireless switch transmitter x1
• Wireless switch receiver x1
• 3.3-5V power supply x 1
• Button x 2

Software Preparation

• Arduino IDE

Connection

Transmitting end :

Receiving end:

Sample code

Receiving end:

#define Button_D2 2//Arduino
#define Button_D3 3//Arduino
//#define Button_D2 D2 //ESP32
//#define Button_D3 D3 //ESP32

void setup() {
  Serial.begin(115200);
  pinMode(Button_D2, INPUT);
  pinMode(Button_D3, INPUT);
}
void loop() {
  if (((digitalRead(Button_D2)==0) && (digitalRead(Button_D3)==0))) {
    Serial.println("State:1,Pressed:NONE");
    delay(500);
  }
  if (((digitalRead(Button_D2)==0) && (digitalRead(Button_D3)==1))) {
    Serial.println("State:2,Pressed:D3");
    delay(500);
  }
  if (((digitalRead(Button_D2)==1) && (digitalRead(Button_D3)==0))) {
    Serial.println("State:3,Pressed:D2");
    delay(500);
  }
  if (((digitalRead(Button_D2)==1) && (digitalRead(Button_D3)==1))) {
    Serial.println("State:4,Pressed:D2&D3");
    delay(500);
  }
  delay(100);
}

Result

Press different key combinations, the serial port will print different status values.