Code 6: //The demo code is PCF8574-DO    You can copy the code to your Arduino IDE

   

   

Code 5: //The demo code is PCF8574-DI    You can copy the code to your Arduino IDE

   

   

Code 4: //The demo code is LAN8720-UDP    You can copy the code to your Arduino IDE

   

Code 3: //The demo code is DS18B20    You can copy the code to your Arduino IDE

Code 2: //The demo code is ADC INPUT    You can copy the code to your Arduino IDE

Code 1: //The demo code is RF-receive    You can copy the code to your Arduino IDE

Attached Files

Thumbnail(s)
   

  Before using KC868-A8, you need to set the parameters of the preference

Copy the following URL: https://dl.espressif.com/dl/package_esp32_index.json

   
Select the Board "NodeMCU -32S"
   

   
#define ANALOG_A1  34  updated in PCB V1.4
#define ANALOG_A2  35  updated in PCB V1.4

IIC SDA:4
IIC SCL:5

Relay_IIC_address 0x24

Relay1 = pcf8574.pinMode(P0, OUTPUT);
Relay2 = pcf8574.pinMode(P1, OUTPUT);
Relay3 = pcf8574.pinMode(P2, OUTPUT);
Relay4 = pcf8574.pinMode(P3, OUTPUT);
Relay5 = pcf8574.pinMode(P4, OUTPUT);
Relay6 = pcf8574.pinMode(P5, OUTPUT);
Relay7 = pcf8574.pinMode(P6, OUTPUT);
Relay8 = pcf8574.pinMode(P7, OUTPUT);

Input_IIC_address 0x22

Input1 = pcf8574.pinMode(P0, INPUT);
Input2 = pcf8574.pinMode(P1, INPUT);
Input3 = pcf8574.pinMode(P2, INPUT);
Input4 = pcf8574.pinMode(P3, INPUT);
Input5 = pcf8574.pinMode(P4, INPUT);
Input6 = pcf8574.pinMode(P5, INPUT);
Input7 = pcf8574.pinMode(P6, INPUT);
Input8 = pcf8574.pinMode(P7, INPUT);


DS18B20/DHT11/DHT21/LED strip -1: 14
DS18B20/DHT11/DHT21/LED strip -2: 13

DS18B20/DHT11/DHT21/LED strip -3: 32   updated in PCB V1.4
DS18B20/DHT11/DHT21/LED strip -4: 33   updated in PCB V1.4


RF433MHz wireless receiver: 15

Ethernet (LAN8720) I/O define:

#define ETH_ADDR        0
#define ETH_POWER_PIN  -1
#define ETH_MDC_PIN    23
#define ETH_MDIO_PIN  18
#define ETH_TYPE      ETH_PHY_LAN8720
#define ETH_CLK_MODE  ETH_CLOCK_GPIO17_OUT

#include <RCSwitch.h>
RCSwitch mySwitch = RCSwitch();

void setup() {
  Serial.begin(9600);
  mySwitch.enableTransmit(digitalPinToInterrupt(2));
}

void loop() {
  mySwitch.switchOn("11111", "00010");
  delay(1000);
  mySwitch.switchOff("11111", "00010");
  delay(1000);

  mySwitch.send(5393, 24);
  delay(1000); 
  mySwitch.send(5396, 24);
  delay(1000); 

  mySwitch.send("000000000001010100010001");
  delay(1000); 
  mySwitch.send("000000000001010100010100");
  delay(1000);

  mySwitch.sendTriState("00000FFF0F0F");
  delay(1000); 
  mySwitch.sendTriState("00000FFF0FF0");
  delay(1000);
}

download arduino IDE source code file: 

  433-sender-code.zip (Size: 407 bytes / Downloads: 265)

Note: install "rcswitch" library online firstly.

#include <RCSwitch.h>

RCSwitch mySwitch = RCSwitch();

void setup() {
  Serial.begin(9600);
  mySwitch.enableReceive(digitalPinToInterrupt(13));
}

void loop() {
  if (mySwitch.available()) {
   
    Serial.print("Received ");
    Serial.print( mySwitch.getReceivedValue() );
    Serial.print(" / ");
    Serial.print( mySwitch.getReceivedBitlength() );
    Serial.print("bit ");
    Serial.print("Protocol: ");
    Serial.println( mySwitch.getReceivedProtocol() );

    mySwitch.resetAvailable();
  }
}


download arduino IDE source code file: 

  RF-receiver.zip (Size: 393 bytes / Downloads: 293)
Note: install "rcswitch" library online firstly.
   

#include "PinDefinitionsAndMore.h"
#include <IRremote.h>

void setup() {

  Serial.begin(9600);
  IrSender.begin(IR_SEND_PIN, ENABLE_LED_FEEDBACK);

}

  uint16_t sAddress = 0x78;
  uint8_t sCommand = 0xCD;
  uint8_t sRepeats = 0;

void loop() {
  IrSender.sendNEC(sAddress, sCommand, sRepeats);
  delay(1000);
}


download arduino IDE source code file: 

  Uair_IR_send.zip (Size: 388 bytes / Downloads: 282)

Note: install "IRremote" library online firstly.



set IR sender and receiver GPIO pins define as below image: