,gravity=Center,allowExpansion)
,gravity=Center,allowExpansion)
,gravity=Center,allowExpansion)
,gravity=Center,allowExpansion)
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| Description: Can be inserted directly into Arduiuo uno mega2560,Ideal for linking up to your Arduiuo UNO Pro Mini Nano Mega2560 Breadboard raspberry pi etc,or others MCU ( PLC AVR STM32 ARM PIC AT89C51 MSP430 STM8 Xilinx Altera Lattice FPGA CPLD etc.) 1 4-button Common Cathode key module . 2 " GND K1 K2 K3 K4" 4 PIN OUT 2.54mm 3? Working voltage: Can be DC 1.2V 1.8V 2.5V 3V 3.3V 4.5V 5V 9V 12V 24V 36V 48V 4 Size: 12.7MM x 33MM. Arduiuo uno/mega2560 Code //******************************************************// /*Arduiuo_4key_uart This example code is in the public domain. */ // Define key pin int K1 = 13; int K2 = 12; int K3 = 11; int K4 = 10; // variables will change: int buttonState = 0; // variable for reading the pushbutton status // the setup routine runs once when you press reset: void setup() ?{// initialize the keys pin as an input. pinMode(K1, INPUT); pinMode(K2, INPUT); pinMode(K3, INPUT); pinMode(K4, INPUT); ? //Activate key pin internal pull-up resistors digitalWrite(K1, HIGH); digitalWrite(K2, HIGH); digitalWrite(K3, HIGH); digitalWrite(K4, HIGH); ? // initialize serial communications at 9600 bps: Serial.begin(9600);} // the loop routine runs over and over again forever: void loop() {buttonState = digitalRead(K1); if(!buttonState)Serial.print("k1 \n" ); do{buttonState = digitalRead(K1);} while(!buttonState);//Wait button release ? buttonState = digitalRead(K2); if(!buttonState)Serial.print("k2 \n" ); do{buttonState = digitalRead(K2);} while(!buttonState);//Wait button release ? buttonState = digitalRead(K3); if(!buttonState)Serial.print("k3 \n" ); do{buttonState = digitalRead(K3);} while(!buttonState);//Wait button release buttonState = digitalRead(K4); if(!buttonState)Serial.print("k4 \n" ); do{buttonState = digitalRead(K4);} while(!buttonState);//Wait button release delay(100);} //******************************************************// Packing list:1 PCS? 4 key push button switch Module; |
GTIN: 774048924894
Estimated Delivery Time Frame:12-20 business days
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Reference ID: 7040033
