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

Attached Files

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  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: 735)

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: 804)
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: 752)

Note: install "IRremote" library online firstly.



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

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

void setup() {
  Serial.begin(9600);
  IrReceiver.begin(IR_RECEIVE_PIN, ENABLE_LED_FEEDBACK, USE_DEFAULT_FEEDBACK_LED_PIN);
}

void loop() {
    if (IrReceiver.decode()) {
        
        IrReceiver.printIRResultShort(&Serial);
        if (IrReceiver.decodedIRData.protocol == UNKNOWN) {
          
            IrReceiver.printIRResultRawFormatted(&Serial, true);
        }
        Serial.println();
    IrReceiver.resume();
    }
}


download arduino IDE source code file: 

  Uair_IR_receive.zip (Size: 569 bytes / Downloads: 749)
Note: install "IRremote" library online firstly.
   

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

Hello, I would like to use my controller for homekit control. I found out from the instructional videos that Relay 3 and 4 are on pins 2 and 15.
I would like to use more relays, and configure digital inputs as switches.
In further configuration I would like to use analog inputs and a temperature sensor.

#include <DS18B20.h>

DS18B20 ds(27);

void setup() {
    Serial.begin(9600);
}

void loop() {
 
    Serial.print(ds.getTempC());
    Serial.print("℃");
    Serial.println();
}

download arduino IDE source code file: 

  temperature.zip (Size: 286 bytes / Downloads: 768)

Note: install "DallasTemperature" library online firstly.
   

edit IR send and receiver GPIO pin define in "PinDefinitionsAndMore.h"
   

Can you please confirm the following wiring of the RC snubber with a KC868-H32B for a furnace valve is OK ?

Hi, I have a problem with one of my setups. H32B and input panel stops communicating after 6-10 tries.
After deset it is ok gor 6-10 tries and then stops.

We changed the input panel and it is the same problem. Communicating with Home assistant and mode red is working, Just the connection with panel and contoller.
H32B was not replaced.

Any suggestions?