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  [arduino code examples for A8v3]-07 how to DS3231 RTC clock
Posted by: admin - 04-20-2025, 06:40 AM - Forum: KC868-A8v3 - No Replies

Code:
/*
* Made by KinCony IoT: https://www.kincony.com
*
* DS3231 RTC with Arduino
*
* This program demonstrates how to use the DS3231 RTC (Real-Time Clock) module with the Arduino.
* It includes functionality to:
* - Initialize the DS3231 RTC module
* - Read the current date and time from the RTC
* - Set the RTC time based on a serial command:Command format: DYYYY-MM-DDTHH:MM:SS
*    Set date and time command example: D2024-09-19T11:50:22
*    print current date and time command: current time
*
*
* Hardware Connections:
* - SDA: GPIO 8
* - SCL: GPIO 18
*/

#include <DS3231.h>
#include <Wire.h>

String serial_cmd_rcv = ""; // Serial port receiver

typedef struct
{
  byte year;    // Last two digits of the year, library adds 2000.
  byte month;
  byte day;
  byte hour;
  byte minute;
  byte second;
} MY_DATE_STR;

MY_DATE_STR my_date_str = {0};

// Define constants for relay control
#define OPEN_RLY_DATA    26
#define OPEN_RLY_MONTH   4
#define CLOSE_RLY_DATA   2
#define CLOSE_RLY_MONTH  5

// Define pin connections
#define SDA_PIN   8
#define SCL_PIN   18

DS3231 rtc; // Create an instance of the DS3231 RTC
bool h12Flag;
bool pmFlag;
static bool bCentury = false;
static bool old_level_high = false;
static bool old_level_low = false;


/**
* @brief Print the current time from the RTC to the Serial Monitor.
*/
static void PrintfCurTime()
{
  Serial.print("Current time is: ");
  int year = rtc.getYear() + 2000;
  Serial.print(year);
  Serial.print("-");

  Serial.print(rtc.getMonth(bCentury), DEC);
  Serial.print("-");

  Serial.print(rtc.getDate(), DEC);
  Serial.print(" ");

  Serial.print(rtc.getHour(h12Flag, pmFlag), DEC);
  Serial.print(":");
  Serial.print(rtc.getMinute(), DEC);
  Serial.print(":");
  Serial.println(rtc.getSecond(), DEC);
}

/**
* @brief Process serial commands to set the RTC time.
* Command format: DYYYY-MM-DDTHH:MM:SS
*/
static void GetSerialCmd()
{
  if (Serial.available() > 0)
  {
    delay(100);
    int num_read = Serial.available();
    while (num_read--)
      serial_cmd_rcv += char(Serial.read());
  }
  else return;

  serial_cmd_rcv.trim();

  if (serial_cmd_rcv == "current time")
  {
    PrintfCurTime();
    serial_cmd_rcv = "";
    return;
  }

  Serial.print("Received length: ");
  Serial.println(serial_cmd_rcv.length());

  int indexof_d = serial_cmd_rcv.indexOf('D');
  int indexof_t = serial_cmd_rcv.indexOf('T');

  Serial.print("D index: ");
  Serial.print(indexof_d);
  Serial.print(" T index: ");
  Serial.println(indexof_t);

  if (serial_cmd_rcv.length() != 20 ||
      serial_cmd_rcv.substring(0, 1) != "D" ||
      serial_cmd_rcv.substring(11, 12) != "T") 
  {
    Serial.println(serial_cmd_rcv);
    serial_cmd_rcv = "";
    return;
  }

  Serial.println("Setting time...");

  my_date_str.year = (byte)serial_cmd_rcv.substring(3, 5).toInt();
  my_date_str.month = (byte)serial_cmd_rcv.substring(6, 8).toInt();
  my_date_str.day = (byte)serial_cmd_rcv.substring(9, 11).toInt();
  my_date_str.hour = (byte)serial_cmd_rcv.substring(12, 14).toInt();
  my_date_str.minute = (byte)serial_cmd_rcv.substring(15, 17).toInt();
  my_date_str.second = (byte)serial_cmd_rcv.substring(18).toInt();

  rtc.setYear(my_date_str.year);
  rtc.setMonth(my_date_str.month);
  rtc.setDate(my_date_str.day);
  rtc.setHour(my_date_str.hour);
  rtc.setMinute(my_date_str.minute);
  rtc.setSecond(my_date_str.second);

  serial_cmd_rcv = "";

  Serial.println("Time set.");
}

void setup() {
  // Initialize the I2C interface
  Wire.begin(SDA_PIN, SCL_PIN, 40000);
 
  // Initialize Serial communication
  Serial.begin(115200);
   
  // Set the RTC to 24-hour mode
  rtc.setClockMode(false); // 24-hour format

  // Print current time to Serial Monitor
  PrintfCurTime();

  // Clear any remaining serial data
  while (Serial.read() >= 0) {}
}

void loop() {
  // Process incoming serial commands
  GetSerialCmd();
  delay(1000); // Delay for 1 second
}
arduino ino file download:

.zip   7-DS3231-RTC.zip (Size: 1.56 KB / Downloads: 671)
BIN file (you can use esp32 download tool download to ESP32-S3 with address 0x0 then directly to use) download:

.zip   7-DS3231-RTC.ino.merged.zip (Size: 191.08 KB / Downloads: 663)

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  [arduino code examples for A8v3]-06 How to use SD Card
Posted by: admin - 04-20-2025, 06:38 AM - Forum: KC868-A8v3 - No Replies

Code:
/*
* Made by KinCony IoT: https://www.kincony.com
*
* SD Card File Operations
*
* This program demonstrates basic file operations on an SD card using the ESP32.
* It includes functionality to:
* - Initialize and test the SD card
* - Read from, write to, append to, and delete files on the SD card
* - Measure file read and write performance
*
* Hardware Connections:
* - SCK: GPIO 11
* - MISO: GPIO 12
* - MOSI: GPIO 10
* - CS: GPIO 9
*/

#include "FS.h"
#include "SD.h"
#include "SPI.h"

// Pin definitions for SD card
#define SCK  11
#define MISO 12
#define MOSI 10
#define CS   9

/**
* @brief Reads the contents of a file from the SD card and prints it to the serial monitor.
*
* @param fs File system to use (in this case, SD).
* @param path Path of the file to read.
*/
void readFile(fs::FS &fs, const char * path) {
  Serial.printf("Reading file: %s\n", path);

  File file = fs.open(path);
  if (!file) {
    Serial.println("Failed to open file for reading");
    return;
  }

  Serial.print("Read from file: ");
  while (file.available()) {
    Serial.print((char)file.read());
  }
  file.close();
}

/**
* @brief Writes a message to a file on the SD card.
*
* @param fs File system to use (in this case, SD).
* @param path Path of the file to write.
* @param message Message to write to the file.
*/
void writeFile(fs::FS &fs, const char * path, const char * message) {
  Serial.printf("Writing file: %s\n", path);

  File file = fs.open(path, FILE_WRITE);
  if (!file) {
    Serial.println("Failed to open file for writing");
    return;
  }
  if (file.print(message)) {
    Serial.println("File written");
  } else {
    Serial.println("Write failed");
  }
  file.close();
}

/**
* @brief Appends a message to a file on the SD card.
*
* @param fs File system to use (in this case, SD).
* @param path Path of the file to append.
* @param message Message to append to the file.
*/
void appendFile(fs::FS &fs, const char * path, const char * message) {
  Serial.printf("Appending to file: %s\n", path);

  File file = fs.open(path, FILE_APPEND);
  if (!file) {
    Serial.println("Failed to open file for appending");
    return;
  }
  if (file.print(message)) {
    Serial.println("Message appended");
  } else {
    Serial.println("Append failed");
  }
  file.close();
}

/**
* @brief Deletes a file from the SD card.
*
* @param fs File system to use (in this case, SD).
* @param path Path of the file to delete.
*/
void deleteFile(fs::FS &fs, const char * path) {
  Serial.printf("Deleting file: %s\n", path);
  if (fs.remove(path)) {
    Serial.println("File deleted");
  } else {
    Serial.println("Delete failed");
  }
}

/**
* @brief Tests file read and write performance.
*
* @param fs File system to use (in this case, SD).
* @param path Path of the file to test.
*/
void testFileIO(fs::FS &fs, const char * path) {
  File file = fs.open(path);
  static uint8_t buf[512];
  size_t len = 0;
  uint32_t start = millis();
  uint32_t end = start;

  if (file) {
    len = file.size();
    size_t flen = len;
    start = millis();
    while (len) {
      size_t toRead = len;
      if (toRead > 512) {
        toRead = 512;
      }
      file.read(buf, toRead);
      len -= toRead;
    }
    end = millis() - start;
    Serial.printf("%u bytes read for %u ms\n", flen, end);
    file.close();
  } else {
    Serial.println("Failed to open file for reading");
  }

  file = fs.open(path, FILE_WRITE);
  if (!file) {
    Serial.println("Failed to open file for writing");
    return;
  }

  size_t i;
  start = millis();
  for (i = 0; i < 2048; i++) {
    file.write(buf, 512);
  }
  end = millis() - start;
  Serial.printf("%u bytes written for %u ms\n", 2048 * 512, end);
  file.close();
}

void setup() {
  // Initialize serial communication
  Serial.begin(115200);
 
  // Initialize SPI and SD card
  SPIClass spi = SPIClass(HSPI);
  spi.begin(SCK, MISO, MOSI, CS);

  if (!SD.begin(CS, spi, 80000000)) {
    Serial.println("Card Mount Failed");
    return;
  }

  uint8_t cardType = SD.cardType();

  if (cardType == CARD_NONE) {
    Serial.println("No SD card attached");
    return;
  }

  Serial.print("SD Card Type: ");
  if (cardType == CARD_MMC) {
    Serial.println("MMC");
  } else if (cardType == CARD_SD) {
    Serial.println("SDSC");
  } else if (cardType == CARD_SDHC) {
    Serial.println("SDHC");
  } else {
    Serial.println("UNKNOWN");
  }

  uint64_t cardSize = SD.cardSize() / (1024 * 1024);
  Serial.printf("SD Card Size: %lluMB\n", cardSize);
  delay(2000);

  // Perform file operations
  deleteFile(SD, "/hello.txt");
  writeFile(SD, "/hello.txt", "Hello ");
  appendFile(SD, "/hello.txt", "World!\n");
  readFile(SD, "/hello.txt");
  testFileIO(SD, "/test.txt");
  Serial.printf("Total space: %lluMB\n", SD.totalBytes() / (1024 * 1024));
  Serial.printf("Used space: %lluMB\n", SD.usedBytes() / (1024 * 1024));
}

void loop() {
  // No operation in loop
}
arduino ino file download:

.zip   6-SD.zip (Size: 1.53 KB / Downloads: 709)
BIN file (you can use esp32 download tool download to ESP32-S3 with address 0x0 then directly to use) download:

.zip   6-SD.ino.merged.zip (Size: 221.25 KB / Downloads: 755)

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  [arduino code examples for A8v3]-05 Read free GPIO state
Posted by: admin - 04-20-2025, 06:37 AM - Forum: KC868-A8v3 - No Replies

Code:
/*
* ESP32 GPIO State Reader
* Reads the state of GPIO47, GPIO48, GPIO7, GPIO40, GPIO0, and GPIO5
* and prints the results to the serial monitor.
*
* Made by KinCony IoT: https://www.kincony.com
*/

#define GPIO_13  13
#define GPIO_40  40
#define GPIO_14  14
#define GPIO_48  48
#define GPIO_0   0


void setup() {
    Serial.begin(115200); // Initialize serial communication at 115200 baud rate
   
    // Set GPIOs as input
    pinMode(GPIO_13, INPUT);
    pinMode(GPIO_40, INPUT);
    pinMode(GPIO_14, INPUT);
    pinMode(GPIO_48, INPUT);
    pinMode(GPIO_0, INPUT);
}

void loop() {
    // Read GPIO states
    int state_13 = digitalRead(GPIO_13);
    int state_40 = digitalRead(GPIO_40);
    int state_14  = digitalRead(GPIO_14);
    int state_48 = digitalRead(GPIO_48);
    int state_0  = digitalRead(GPIO_0);
   
    // Print GPIO states to the serial monitor
    Serial.printf("GPIO13: %d, GPIO40: %d, GPIO14: %d, GPIO48: %d, GPIO0: %d\n",
                  state_13, state_40, state_14, state_48, state_0);
   
    delay(1000); // Read GPIO states every second
}
arduino ino file download:

.zip   5-free-gpio-state.zip (Size: 621 bytes / Downloads: 677)
BIN file (you can use esp32 download tool download to ESP32-S3 with address 0x0 then directly to use) download:

.zip   5-free-gpio-state.ino.merged.zip (Size: 179.32 KB / Downloads: 683)

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  [arduino code examples for A8v3]-04 RS485 communication test
Posted by: admin - 04-20-2025, 06:35 AM - Forum: KC868-A8v3 - No Replies

Code:
/*
* Made by KinCony IoT: https://www.kincony.com
*
* RS485 Communication Test
*
* This program is a simple test for RS485 communication using ESP32-S3.
* It will send a message over RS485 and then read incoming messages.
* The TXD pin is defined as GPIO 18 and RXD pin is defined as GPIO 8.
*/

#include <HardwareSerial.h>

// Define RS485 pins
#define RS485_RXD 38
#define RS485_TXD 39

// Create a hardware serial object
HardwareSerial rs485Serial(1);

void setup() {
  // Start serial communication for debugging
  Serial.begin(115200);
  while (!Serial);

  // Initialize RS485 Serial communication
  rs485Serial.begin(9600, SERIAL_8N1, RS485_RXD, RS485_TXD);
 
  Serial.println("RS485 Test Start");
}

void loop() {
  // Send a test message
  rs485Serial.println("Hello from KinCony B8M!");

  // Wait for a short period
  delay(1000);

  // Check if data is available to read
  if (rs485Serial.available()) {
    String receivedMessage = "";
    while (rs485Serial.available()) {
      char c = rs485Serial.read();
      receivedMessage += c;
    }
    // Print the received message
    Serial.print("Received: ");
    Serial.println(receivedMessage);
  }

  // Wait before sending the next message
  delay(2000);
}
arduino ino file download:

.zip   4-RS485-Test.zip (Size: 763 bytes / Downloads: 692)
BIN file (you can use esp32 download tool download to ESP32-S3 with address 0x0 then directly to use) download:

.zip   4-RS485-Test.ino.merged.zip (Size: 184.35 KB / Downloads: 654)

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  [arduino code examples for A8v3]-03 Read analog input ports value
Posted by: admin - 04-20-2025, 06:34 AM - Forum: KC868-A8v3 - No Replies

Code:
/*
* Made by KinCony IoT: https://www.kincony.com
*
* Description:
* This Arduino program reads analog values from four analog input pins (A1, A2)
* and prints the values to the Serial Monitor. The analog inputs are defined with specific
* GPIO pins and the program reads the voltage levels from these pins every 2 seconds.
*
* Pin Definitions:
* - A1: GPIO 7
* - A2: GPIO 6

*/

#define ANALOG_A1   7   // Define GPIO pin for analog input A1
#define ANALOG_A2   6   // Define GPIO pin for analog input A2


void setup()
{
    Serial.begin(115200); // Initialize serial communication at 115200 baud rate
    delay(500); // Short delay to allow serial communication to start

    pinMode(ANALOG_A1, INPUT); // Set GPIO 5 as an input for analog signal A1
    pinMode(ANALOG_A2, INPUT); // Set GPIO 7 as an input for analog signal A2

}

void loop()
{
    // Read and print analog values from the defined pins
    Serial.print("A1=");
    Serial.println(analogRead(ANALOG_A1)); // Read and print the value from A1
    Serial.print("A2=");
    Serial.println(analogRead(ANALOG_A2)); // Read and print the value from A2   
    delay(2000); // Wait for 2 seconds before the next reading
}
arduino ino file download:

.zip   3-analog-input.zip (Size: 698 bytes / Downloads: 679)
BIN file (you can use esp32 download tool download to ESP32-S3 with address 0x0 then directly to use) download:

.zip   3-analog-input.ino.merged.zip (Size: 184.59 KB / Downloads: 664)

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  [arduino code examples for A8v3]-02 Read digital input ports state
Posted by: admin - 04-20-2025, 06:32 AM - Forum: KC868-A8v3 - No Replies

Code:
/*
* Made by KinCony IoT: https://www.kincony.com
*
* Description:
* This Arduino program reads the state of a 16-channel PCF8575 I/O expander
* and prints the state of all input pins to the Serial Monitor. The state of
* each pin is represented as a bit in a 16-bit value, where each bit corresponds
* to an input pin. The program prints the input state in binary format.
*
* Pin Definitions:
* - SDA: GPIO 8
* - SCL: GPIO 18
* - PCF8575 I2C Address: 0x22
*/

#include "Arduino.h"
#include "PCF8575.h"

// Define I2C pins
#define I2C_SDA 8  // Define SDA pin
#define I2C_SCL 18  // Define SCL pin

// Set I2C address
PCF8575 pcf8575_IN1(0x22); // The I2C address of the PCF8575

void setup() {
    Serial.begin(115200);

    // Initialize I2C communication
    Wire.begin(I2C_SDA, I2C_SCL); // Initialize I2C with defined SDA and SCL pins

    pcf8575_IN1.begin(); // Initialize the PCF8575

    Serial.println("KinCony B8M 8 channel input state 0:ON  1:OFF");
}

void loop() {
    uint16_t state = 0;

    // Read the state of each pin (assuming 16 pins)
    for (int pin = 8; pin < 16; pin++) {
        if (pcf8575_IN1.read(pin)) {
            state |= (1 << pin); // Set the bit for the active pin
        }
    }

    Serial.print("Input state: ");
    Serial.println(state, BIN); // Print the state of inputs in binary

    delay(500); // Delay 500ms
}
arduino ino file download:

.zip   2-digital-input.zip (Size: 839 bytes / Downloads: 762)
BIN file (you can use esp32 download tool download to ESP32-S3 with address 0x0 then directly to use) download:

.zip   2-digital-input.ino.merged.zip (Size: 189.5 KB / Downloads: 677)

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  [arduino code examples for A8v3]-01 Turn ON/OFF relay
Posted by: admin - 04-20-2025, 06:18 AM - Forum: KC868-A8v3 - No Replies

Code:
/*
* Made by KinCony IoT: https://www.kincony.com
*
* This program controls a 16-channel relay board via a PCF8575 I/O expander.
* It sequentially turns on each relay and then turns them off in a loop.
*
* Pin Definitions:
* - SDA: GPIO 8
* - SCL: GPIO 18
*
* Delay Time:
* - 200 milliseconds between switching relays
*/

#include <Wire.h>        // Include the Wire library for I2C communication
#include <PCF8575.h>     // Include the PCF8575 library to control the I/O expander

#define SDA 8           // Define the SDA pin
#define SCL 18          // Define the SCL pin
#define DELAY_TIME 200   // Define the delay time in milliseconds

// Set I2C address of the PCF8575 module
#define I2C_ADDRESS 0x22 // I2C address of the PCF8575 module

PCF8575 pcf8575_R1(I2C_ADDRESS); // Create a PCF8575 object with the specified I2C address

void setup() {
  // Initialize I2C communication
  Wire.begin(SDA, SCL); // SDA on GPIO 8, SCL on GPIO 18 (according to your board's configuration)
 
  // Initialize serial communication for debugging (optional)
  Serial.begin(115200);
  Serial.println("PCF8575 Relay Control: Starting...");

  // Initialize the PCF8575 module
  pcf8575_R1.begin();

  // Turn off all relays initially (set all pins HIGH)
  for (int i = 0; i < 8; i++) {
    pcf8575_R1.write(i, HIGH); // Set all relays to OFF (assuming HIGH means OFF for relays)
  }
}

void loop() {
  // Sequentially turn on each relay
  for (int i = 0; i < 8; i++) {
    pcf8575_R1.write(i, LOW);   // Turn on the relay at pin i (LOW means ON for the relay)
    delay(DELAY_TIME);          // Wait for DELAY_TIME milliseconds
  }

  // Sequentially turn off each relay
  for (int i = 0; i < 8; i++) {
    pcf8575_R1.write(i, HIGH);  // Turn off the relay at pin i (HIGH means OFF for the relay)
    delay(DELAY_TIME);          // Wait for DELAY_TIME milliseconds
  }
}
arduino ino file download:

.zip   1-output.zip (Size: 925 bytes / Downloads: 699)
BIN file (you can use esp32 download tool download to ESP32-S3 with address 0x0 then directly to use) download:

.zip   1-output.ino.merged.zip (Size: 189.23 KB / Downloads: 709)

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  KC868-A8v3 ESPHome yaml for home assistant
Posted by: admin - 04-20-2025, 06:15 AM - Forum: KC868-A8v3 - No Replies

   

Code:
esphome:
  name: a8v3
  friendly_name: a8v3
  platformio_options:
    board_build.extra_flags:
      # WIFI_CONTROL_SELF_MODE = 0
      # WIFI_CONTROL_SELF_MODE = 1
      - "-DWIFI_CONTROL_SELF_MODE=1"
esp32:
  board: esp32-s3-devkitc-1
  framework:
    type: arduino

external_components:
  - source:
      type: git
      url: https://github.com/hzkincony/esphome-tuya-wifi-mcu
      ref: v1.1.0

# Enable logging
# logger:
#   hardware_uart: USB_SERIAL_JTAG
# Enable Home Assistant API
api:
  encryption:
    key: "WeVOuL5oNhjXcfzXtTirlOwvtWvCD5yqIxd3oV4es1k="

ethernet:
  type: W5500
  clk_pin: GPIO1
  mosi_pin: GPIO2
  miso_pin: GPIO41
  cs_pin: GPIO42
  interrupt_pin: GPIO43
  reset_pin: GPIO44

i2c:
   - id: bus_a
     sda: 8
     scl: 18
     scan: true
     frequency: 400kHz

pcf8574:
  - id: 'pcf8574_hub_out_1'  # for output channel 0-7| input channel 8-15   
    i2c_id: bus_a
    address: 0x22
    pcf8575: true

uart:
  - id: uart_1    #RS485
    baud_rate: 9600
    debug:
      direction: BOTH
      dummy_receiver: true
      after:
        timeout: 10ms
    tx_pin: 39
    rx_pin: 38

  - id: tuya_mcu_uart
    tx_pin: GPIO16
    rx_pin: GPIO17
    baud_rate: 9600

tuya_wifi_mcu:
  # tuya mcu product id
  product_id: qlvsreramxcldwek
  uart_id: tuya_mcu_uart
  wifi_reset_pin: 28
  wifi_led_pin: 16

switch:
  - platform: uart
    uart_id: uart_1
    name: "RS485 Button"
    data: [0x11, 0x22, 0x33, 0x44, 0x55]

  - platform: gpio
    name: "a8v3-output01"
    id: "a8v3_output01"
    pin:
      pcf8574: pcf8574_hub_out_1
      number: 0
      mode: OUTPUT
      inverted: true
  - platform: tuya_wifi_mcu
    name: a8v3-output1-tuya
    dp_id: 1
    # hide from homeassistant ui
    internal: true
    # bind other switch, sync state
    bind_switch_id: "a8v3_output01"

  - platform: gpio
    name: "a8v3-output02"
    id: "a8v3_output02"
    pin:
      pcf8574: pcf8574_hub_out_1
      number: 1
      mode: OUTPUT
      inverted: true
  - platform: tuya_wifi_mcu
    name: a8v3-output2-tuya
    dp_id: 2
    # hide from homeassistant ui
    internal: true
    # bind other switch, sync state
    bind_switch_id: "a8v3_output02"

  - platform: gpio
    name: "a8v3-output03"
    id: "a8v3_output03"
    pin:
      pcf8574: pcf8574_hub_out_1
      number: 2
      mode: OUTPUT
      inverted: true
  - platform: tuya_wifi_mcu
    name: a8v3-output3-tuya
    dp_id: 3
    # hide from homeassistant ui
    internal: true
    # bind other switch, sync state
    bind_switch_id: "a8v3_output03"

  - platform: gpio
    name: "a8v3-output04"
    id: "a8v3_output04"
    pin:
      pcf8574: pcf8574_hub_out_1
      number: 3
      mode: OUTPUT
      inverted: true
  - platform: tuya_wifi_mcu
    name: a8v3-output4-tuya
    dp_id: 4
    # hide from homeassistant ui
    internal: true
    # bind other switch, sync state
    bind_switch_id: "a8v3_output04"

  - platform: gpio
    name: "a8v3-output05"
    id: "a8v3_output05"
    pin:
      pcf8574: pcf8574_hub_out_1
      number: 4
      mode: OUTPUT
      inverted: true
  - platform: tuya_wifi_mcu
    name: a8v3-output5-tuya
    dp_id: 5
    # hide from homeassistant ui
    internal: true
    # bind other switch, sync state
    bind_switch_id: "a8v3_output05"

  - platform: gpio
    name: "a8v3-output06"
    id: "a8v3_output06"
    pin:
      pcf8574: pcf8574_hub_out_1
      number: 5
      mode: OUTPUT
      inverted: true
  - platform: tuya_wifi_mcu
    name: a8v3-output6-tuya
    dp_id: 6
    # hide from homeassistant ui
    internal: true
    # bind other switch, sync state
    bind_switch_id: "a8v3_output06"

  - platform: gpio
    name: "a8v3-output07"
    id: "a8v3_output07"
    pin:
      pcf8574: pcf8574_hub_out_1
      number: 6
      mode: OUTPUT
      inverted: true
  - platform: tuya_wifi_mcu
    name: a8v3-output7-tuya
    dp_id: 101
    # hide from homeassistant ui
    internal: true
    # bind other switch, sync state
    bind_switch_id: "a8v3_output07"

  - platform: gpio
    name: "a8v3-output08"
    id: "a8v3_output08"
    pin:
      pcf8574: pcf8574_hub_out_1
      number: 7
      mode: OUTPUT
      inverted: true
  - platform: tuya_wifi_mcu
    name: a8v3-output8-tuya
    dp_id: 102
    # hide from homeassistant ui
    internal: true
    # bind other switch, sync state
    bind_switch_id: "a8v3_output08"

binary_sensor:
  - platform: gpio
    name: "a8v3-input01"
    id: "a8v3_input01"
    pin:
      pcf8574: pcf8574_hub_out_1
      number: 8
      mode: INPUT
      inverted: true
  - platform: tuya_wifi_mcu
    name: a8v3-input1-tuya
    dp_id: 111
    bind_binary_sensor_id: a8v3_input01
    internal: true

  - platform: gpio
    name: "a8v3-input02"
    id: "a8v3_input02"
    pin:
      pcf8574: pcf8574_hub_out_1
      number: 9
      mode: INPUT
      inverted: true
  - platform: tuya_wifi_mcu
    name: a8v3-input2-tuya
    dp_id: 112
    bind_binary_sensor_id: a8v3_input02
    internal: true

  - platform: gpio
    name: "a8v3-input03"
    id: "a8v3_input03"
    pin:
      pcf8574: pcf8574_hub_out_1
      number: 10
      mode: INPUT
      inverted: true
  - platform: tuya_wifi_mcu
    name: a8v3-input3-tuya
    dp_id: 113
    bind_binary_sensor_id: a8v3_input03
    internal: true

  - platform: gpio
    name: "a8v3-input04"
    id: "a8v3_input04"
    pin:
      pcf8574: pcf8574_hub_out_1
      number: 11
      mode: INPUT
      inverted: true
  - platform: tuya_wifi_mcu
    name: a8v3-input4-tuya
    dp_id: 114
    bind_binary_sensor_id: a8v3_input04
    internal: true

  - platform: gpio
    name: "a8v3-input05"
    id: "a8v3_input05"
    pin:
      pcf8574: pcf8574_hub_out_1
      number: 12
      mode: INPUT
      inverted: true
  - platform: tuya_wifi_mcu
    name: a8v3-input5-tuya
    dp_id: 115
    bind_binary_sensor_id: a8v3_input05
    internal: true

  - platform: gpio
    name: "a8v3-input06"
    id: "a8v3_input06"
    pin:
      pcf8574: pcf8574_hub_out_1
      number: 13
      mode: INPUT
      inverted: true
  - platform: tuya_wifi_mcu
    name: a8v3-input6-tuya
    dp_id: 116
    bind_binary_sensor_id: a8v3_input06
    internal: true

  - platform: gpio
    name: "a8v3-input07"
    id: "a8v3_input07"
    pin:
      pcf8574: pcf8574_hub_out_1
      number: 14
      mode: INPUT
      inverted: true
  - platform: tuya_wifi_mcu
    name: a8v3-input7-tuya
    dp_id: 117
    bind_binary_sensor_id: a8v3_input07
    internal: true

  - platform: gpio
    name: "a8v3-input08"
    id: "a8v3_input08"
    pin:
      pcf8574: pcf8574_hub_out_1
      number: 15
      mode: INPUT
      inverted: true
  - platform: tuya_wifi_mcu
    name: a8v3-input8-tuya
    dp_id: 118
    bind_binary_sensor_id: a8v3_input08
    internal: true

##pull-up resistance on PCB
  - platform: gpio
    name: "a8v3-W1-io13"
    pin:
      number: 13
      inverted: true

  - platform: gpio
    name: "a8v3-W1-io40"
    pin:
      number: 40
      inverted: true

  - platform: gpio
    name: "a8v3-W1-io14"
    pin:
      number: 14
      inverted: true

  - platform: gpio
    name: "a8v3-W1-io48"
    pin:
      number: 48
      inverted: true
## without resistance on PCB
  - platform: gpio
    name: "a8v3-5"
    pin:
      number: 5
      inverted:  false

  - platform: gpio
    name: "a8v3-0"
    pin:
      number: 0
      inverted:  false

sensor:
  - platform: adc
    pin: 7
    name: "A8v3 A1 Voltage"
    update_interval: 5s
    attenuation: 11db
    filters:
      - lambda:
          if (x >= 3.11) {
            return x * 1.60256;
          } else if (x <= 0.15) {
            return 0;
          } else {
            return x * 1.51;
          }
  - platform: adc
    pin: 6
    name: "A8v3 A2 Voltage"
    update_interval: 5s
    attenuation: 11db
    filters:
      # - multiply: 1.51515
      - lambda:
          if (x >= 3.11) {
            return x * 1.60256;
          } else if (x <= 0.15) {
            return 0;
          } else {
            return x * 1.51;
          }

web_server:
  port: 80

font:
  - file: "gfonts://Roboto"
    id: roboto
    size: 20

display:
  - platform: ssd1306_i2c
    i2c_id: bus_a
    model: "SSD1306 128x64"
    address: 0x3C
    lambda: |-
      it.printf(0, 0, id(roboto), "KinCony a8v3");
esphome yaml file download:

.txt   A8v3-HA.txt (Size: 8.41 KB / Downloads: 709)

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  KC868-A8v3 ESP32-S3 IO pins define
Posted by: admin - 04-20-2025, 06:13 AM - Forum: KC868-A8v3 - No Replies

IIC Bus:

SDA:GPIO8
SCL:GPIO18

PCF8575: i2c address:0x22

PCF8575->P0 (relay1)
PCF8575->P1 (relay2)
PCF8575->P2 (relay3)
PCF8575->P3 (relay4)
PCF8575->P4 (relay5)
PCF8575->P5 (relay6)
PCF8575->P6 (relay7)
PCF8575->P7 (relay8)

PCF8575->P8 (DI1)
PCF8575->P9 (DI2)
PCF8575->P10 (DI3)
PCF8575->P11 (DI4)
PCF8575->P12 (DI5)
PCF8575->P13 (DI6)
PCF8575->P14 (DI7)
PCF8575->P15 (DI8)

24C02 EPROM i2c address: 0x50
DS3231 RTC i2c address: 0x68
SSD1306 display: i2c address:0x3c


Analog input (A1: DC 0-5v): GPIO7
Analog input (A2: DC 0-5v): GPIO6

-----------------
1-wire GPIOs (with pull-up resistance on PCB):
S1:GPIO40
S2:GPIO13
S3:GPIO48
S4:GPIO14


-----------------

Ethernet (W5500) I/O define:

clk_pin: GPIO1
mosi_pin: GPIO2
miso_pin: GPIO41
cs_pin: GPIO42

interrupt_pin: GPIO43
reset_pin: GPIO44

--------------------
RS485:
RXD:GPIO38
TXD:GPIO39

Tuya module:
RXD:GPIO17
TXD:GPIO16

Tuya network button: Tuya module's P28
Tuya network LED: Tuya module's P16
--------------------
SD Card:
SPI-MOSI:GPIO10
SPI-SCK:GPIO11
SPI-MISO:GPIO12
SPI-CS:GPIO9
SPI-CD:GPIO47
--------------------
RF433M sender:GPIO4
RF433M receiver:GPIO5

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  [arduino code examples for A2v3]-11 Digital input trigger relay output
Posted by: admin - 04-20-2025, 06:07 AM - Forum: KC868-A2v3 - No Replies

Code:
/**
* @brief Example to control relays based on digital input states using ESP32
* @details This program reads the states of two digital inputs (GPIO16, GPIO17)
*          and controls two relays (GPIO40, GPIO39) accordingly.
*
* Made by KinCony IoT: https://www.kincony.com
*/

// Define the GPIO pins for digital inputs
#define INPUT1_PIN 16  // GPIO16 for Digital Input 1
#define INPUT2_PIN 17  // GPIO17 for Digital Input 2

// Define the GPIO pins for relays
#define RELAY1_PIN 40  // GPIO40 for Relay 1
#define RELAY2_PIN 39  // GPIO39 for Relay 2

void setup() {
    // Initialize the serial communication for debugging
    Serial.begin(115200);
    Serial.println("ESP32 Input-Controlled Relay Example");

    // Set the input pins as INPUT
    pinMode(INPUT1_PIN, INPUT);
    pinMode(INPUT2_PIN, INPUT);

    // Set the relay pins as OUTPUT
    pinMode(RELAY1_PIN, OUTPUT);
    pinMode(RELAY2_PIN, OUTPUT);

    // Turn off both relays at startup (assuming active LOW relays)
    digitalWrite(RELAY1_PIN, HIGH);
    digitalWrite(RELAY2_PIN, HIGH);
}

void loop() {
    // Read the state of the digital inputs
    int state1 = digitalRead(INPUT1_PIN);
    int state2 = digitalRead(INPUT2_PIN);

    // Control the relays based on input states
    digitalWrite(RELAY1_PIN, state1 == HIGH ? LOW : HIGH); // Activate relay if input is HIGH
    digitalWrite(RELAY2_PIN, state2 == HIGH ? LOW : HIGH); // Activate relay if input is HIGH

    // Print the states to the Serial Monitor
    Serial.print("Digital Input 1 State: ");
    Serial.println(state1);
    Serial.print("Digital Input 2 State: ");
    Serial.println(state2);

    // Wait for 100 milliseconds before reading again
    delay(100);
}
arduino ino file download:

.zip   11-input-trigger-output.zip (Size: 866 bytes / Downloads: 758)
BIN file (you can use esp32 download tool download to ESP32-S3 with address 0x0 then directly to use) download:

.zip   11-input-trigger-output.ino.merged.zip (Size: 179.47 KB / Downloads: 729)

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