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[arduino code examples for B4]-02 Read digital input ports state

Posted by: admin - 01-14-2026, 03:52 AM - Forum: B4 - No Replies

Code:
/*

 * Made by KinCony IoT: https://www.kincony.com

 *

 * Description:

 * This Arduino program reads the state of a 16-channel PCF8574 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 8-bit value, where each bit corresponds 

 * to an input pin. The program prints the input state in binary format.

 *

 * Pin Definitions:

 * - SDA: GPIO 21

 * - SCL: GPIO 22

 * - PCF8575 I2C Address: 0x24

 */

#include "Arduino.h"

#include "PCF8574.h"

// Define I2C pins

#define I2C_SDA 8  // Define SDA pin

#define I2C_SCL 18  // Define SCL pin

// Set I2C address

PCF8574 pcf8574_IN1(0x24); // 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

    pcf8574_IN1.pinMode(P0, INPUT);

    pcf8574_IN1.pinMode(P1, INPUT);

    pcf8574_IN1.pinMode(P2, INPUT);

    pcf8574_IN1.pinMode(P3, INPUT);

    pcf8574_IN1.begin(); // Initialize the PCF8575

    Serial.println("KinCony F4 4 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 = 0; pin < 4; pin++) {

        if (pcf8574_IN1.digitalRead(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: 879 bytes / Downloads: 84)
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: 199.52 KB / Downloads: 90)

[arduino code examples for B4M]-02 Read digital input ports state

Posted by: admin - 01-14-2026, 03:52 AM - Forum: B4M - No Replies

Code:
/*

 * Made by KinCony IoT: https://www.kincony.com

 *

 * Description:

 * This Arduino program reads the state of a 16-channel PCF8574 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 8-bit value, where each bit corresponds 

 * to an input pin. The program prints the input state in binary format.

 *

 * Pin Definitions:

 * - SDA: GPIO 21

 * - SCL: GPIO 22

 * - PCF8575 I2C Address: 0x24

 */

#include "Arduino.h"

#include "PCF8574.h"

// Define I2C pins

#define I2C_SDA 8  // Define SDA pin

#define I2C_SCL 18  // Define SCL pin

// Set I2C address

PCF8574 pcf8574_IN1(0x24); // 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

    pcf8574_IN1.pinMode(P0, INPUT);

    pcf8574_IN1.pinMode(P1, INPUT);

    pcf8574_IN1.pinMode(P2, INPUT);

    pcf8574_IN1.pinMode(P3, INPUT);

    pcf8574_IN1.begin(); // Initialize the PCF8575

    Serial.println("KinCony F4 4 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 = 0; pin < 4; pin++) {

        if (pcf8574_IN1.digitalRead(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: 879 bytes / Downloads: 101)
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: 199.52 KB / Downloads: 106)

[arduino code examples for B4]-01 Turn ON/OFF OUTPUT

Posted by: admin - 01-14-2026, 03:49 AM - Forum: B4 - No Replies

Code:
/*

 * Made by KinCony IoT: https://www.kincony.com

 *

 * This program controls a 8-channel relay board via a PCF8574 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 <PCF8574.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 0x24 // I2C address of the PCF8575 module

PCF8574 pcf8574_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...");

    pcf8574_R1.pinMode(P4, OUTPUT);

  pcf8574_R1.pinMode(P5, OUTPUT);

  pcf8574_R1.pinMode(P6, OUTPUT);

  pcf8574_R1.pinMode(P7, OUTPUT);

  // Initialize the PCF8575 module

  pcf8574_R1.begin();

  // Turn off all relays initially (set all pins HIGH)

  for (int i = 4; i < 8; i++) {

    pcf8574_R1.digitalWrite(i, HIGH); // Set all relays to OFF (assuming HIGH means OFF for relays)

  }

}

void loop() {

  // Sequentially turn on each relay

  for (int i = 4; i < 8; i++) {

    pcf8574_R1.digitalWrite(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 = 4; i < 8; i++) {

    pcf8574_R1.digitalWrite(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-relay.zip (Size: 964 bytes / Downloads: 90)
BIN file (you can use esp32 download tool download to ESP32-S3 with address 0x0 then directly to use) download:

.zip

1-relay.ino.merged.zip (Size: 199.39 KB / Downloads: 74)

[arduino code examples for B4M]-01 Turn ON/OFF OUTPUT

Posted by: admin - 01-14-2026, 03:49 AM - Forum: B4M - No Replies

Code:
/*

 * Made by KinCony IoT: https://www.kincony.com

 *

 * This program controls a 8-channel relay board via a PCF8574 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 <PCF8574.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 0x24 // I2C address of the PCF8575 module

PCF8574 pcf8574_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...");

    pcf8574_R1.pinMode(P4, OUTPUT);

  pcf8574_R1.pinMode(P5, OUTPUT);

  pcf8574_R1.pinMode(P6, OUTPUT);

  pcf8574_R1.pinMode(P7, OUTPUT);

  // Initialize the PCF8575 module

  pcf8574_R1.begin();

  // Turn off all relays initially (set all pins HIGH)

  for (int i = 4; i < 8; i++) {

    pcf8574_R1.digitalWrite(i, HIGH); // Set all relays to OFF (assuming HIGH means OFF for relays)

  }

}

void loop() {

  // Sequentially turn on each relay

  for (int i = 4; i < 8; i++) {

    pcf8574_R1.digitalWrite(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 = 4; i < 8; i++) {

    pcf8574_R1.digitalWrite(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-relay.zip (Size: 964 bytes / Downloads: 90)
BIN file (you can use esp32 download tool download to ESP32-S3 with address 0x0 then directly to use) download:

.zip

1-relay.ino.merged.zip (Size: 199.39 KB / Downloads: 89)

B4 ESPHome yaml for home assistant with tuya

Posted by: admin - 01-14-2026, 03:46 AM - Forum: B4 - No Replies

Code:
esphome:

  name: b4

  friendly_name: b4

  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: v1.3.0

# Enable logging

# logger: 

#   hardware_uart: USB_SERIAL_JTAG

# Enable Home Assistant API

api:

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: 0x24

uart:

  - id: uart_1    #RS485

    baud_rate: 9600

    debug:

      direction: BOTH

      dummy_receiver: true

      after:

        timeout: 10ms

    tx_pin: 38

    rx_pin: 39

  - id: tuya_mcu_uart

    tx_pin: GPIO15

    rx_pin: GPIO16

    baud_rate: 9600

tuya_wifi_mcu:

  # tuya mcu product id

  product_id: fotgrf8rowhk1nm3

  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: "b4-output01"

    id: "b4_output01"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 4

      mode: OUTPUT

      inverted: true

  - platform: tuya_wifi_mcu

    name: b4-output1-tuya

    dp_id: 1

    # hide from homeassistant ui

    internal: true

    # bind other switch, sync state

    bind_switch_id: "b4_output01"

  - platform: gpio

    name: "b4-output02"

    id: "b4_output02"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 5

      mode: OUTPUT

      inverted: true

  - platform: tuya_wifi_mcu

    name: b4-output2-tuya

    dp_id: 2

    # hide from homeassistant ui

    internal: true

    # bind other switch, sync state

    bind_switch_id: "b4_output02"

  - platform: gpio

    name: "b4-output03"

    id: "b4_output03"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 6

      mode: OUTPUT

      inverted: true

  - platform: tuya_wifi_mcu

    name: b4-output3-tuya

    dp_id: 3

    # hide from homeassistant ui

    internal: true

    # bind other switch, sync state

    bind_switch_id: "b4_output03"

  - platform: gpio

    name: "b4-output04"

    id: "b4_output04"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 7

      mode: OUTPUT

      inverted: true

  - platform: tuya_wifi_mcu

    name: b4-output4-tuya

    dp_id: 4

    # hide from homeassistant ui

    internal: true

    # bind other switch, sync state

    bind_switch_id: "b4_output04"

binary_sensor:

  - platform: gpio

    name: "b4-input01"

    id: "b4_input01"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 0

      mode: INPUT

      inverted: true

  - platform: tuya_wifi_mcu

    name: b4-input1-tuya

    dp_id: 111

    bind_binary_sensor_id: b4_input01

    internal: true

  - platform: gpio

    name: "b4-input02"

    id: "b4_input02"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 1

      mode: INPUT

      inverted: true

  - platform: tuya_wifi_mcu

    name: b4-input2-tuya

    dp_id: 112

    bind_binary_sensor_id: b4_input02

    internal: true

  - platform: gpio

    name: "b4-input03"

    id: "b4_input03"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 2

      mode: INPUT

      inverted: true

  - platform: tuya_wifi_mcu

    name: b4-input3-tuya

    dp_id: 113

    bind_binary_sensor_id: b4_input03

    internal: true

  - platform: gpio

    name: "b4-input04"

    id: "b4_input04"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 3

      mode: INPUT

      inverted: true

  - platform: tuya_wifi_mcu

    name: b4-input4-tuya

    dp_id: 114

    bind_binary_sensor_id: b4_input04

    internal: true

##pull-up resistance on PCB

  - platform: gpio

    name: "b8-W1-io47"

    pin: 

      number: 47

      inverted: true

  - platform: gpio

    name: "b8-W1-io48"

    pin: 

      number: 48

      inverted: true

  - platform: gpio

    name: "b8-W1-io17"

    pin: 

      number: 17

      inverted: true

  - platform: gpio

    name: "b8-W1-io40"

    pin: 

      number: 40

      inverted: true

## without resistance on PCB

  - platform: gpio

    name: "b8-13"

    pin: 

      number: 13

      inverted:  false

  - platform: gpio

    name: "b8-14"

    pin: 

      number: 14

      inverted:  false

  - platform: gpio

    name: "b8-21"

    pin: 

      number: 21

      inverted:  false

  - platform: gpio

    name: "b8-0"

    pin: 

      number: 0

      inverted:  false

ads1115:

  - address: 0x48

sensor:

  - platform: ads1115

    multiplexer: 'A0_GND'

    gain: 6.144

    resolution: 16_BITS

    name: "ADS1115 Channel A0-GND"

    update_interval: 5s

  - platform: ads1115

    multiplexer: 'A1_GND'

    gain: 6.144

    name: "ADS1115 Channel A1-GND"

    update_interval: 5s

  - platform: ads1115

    multiplexer: 'A2_GND'

    gain: 6.144

    name: "ADS1115 Channel A2-GND"

    update_interval: 5s

  - platform: ads1115

    multiplexer: 'A3_GND'

    gain: 6.144

    name: "ADS1115 Channel A3-GND"

    update_interval: 5s

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 B4");

download yaml file:

.txt

B4-HA-Tuya.txt (Size: 5.63 KB / Downloads: 72)

B4M ESPHome yaml for home assistant with tuya

Posted by: admin - 01-14-2026, 03:46 AM - Forum: B4M - No Replies

Code:
esphome:

  name: b4

  friendly_name: b4

  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: v1.3.0

# Enable logging

# logger: 

#   hardware_uart: USB_SERIAL_JTAG

# Enable Home Assistant API

api:

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: 0x24

uart:

  - id: uart_1    #RS485

    baud_rate: 9600

    debug:

      direction: BOTH

      dummy_receiver: true

      after:

        timeout: 10ms

    tx_pin: 38

    rx_pin: 39

  - id: tuya_mcu_uart

    tx_pin: GPIO15

    rx_pin: GPIO16

    baud_rate: 9600

tuya_wifi_mcu:

  # tuya mcu product id

  product_id: fotgrf8rowhk1nm3

  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: "b4-output01"

    id: "b4_output01"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 4

      mode: OUTPUT

      inverted: true

  - platform: tuya_wifi_mcu

    name: b4-output1-tuya

    dp_id: 1

    # hide from homeassistant ui

    internal: true

    # bind other switch, sync state

    bind_switch_id: "b4_output01"

  - platform: gpio

    name: "b4-output02"

    id: "b4_output02"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 5

      mode: OUTPUT

      inverted: true

  - platform: tuya_wifi_mcu

    name: b4-output2-tuya

    dp_id: 2

    # hide from homeassistant ui

    internal: true

    # bind other switch, sync state

    bind_switch_id: "b4_output02"

  - platform: gpio

    name: "b4-output03"

    id: "b4_output03"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 6

      mode: OUTPUT

      inverted: true

  - platform: tuya_wifi_mcu

    name: b4-output3-tuya

    dp_id: 3

    # hide from homeassistant ui

    internal: true

    # bind other switch, sync state

    bind_switch_id: "b4_output03"

  - platform: gpio

    name: "b4-output04"

    id: "b4_output04"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 7

      mode: OUTPUT

      inverted: true

  - platform: tuya_wifi_mcu

    name: b4-output4-tuya

    dp_id: 4

    # hide from homeassistant ui

    internal: true

    # bind other switch, sync state

    bind_switch_id: "b4_output04"

binary_sensor:

  - platform: gpio

    name: "b4-input01"

    id: "b4_input01"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 0

      mode: INPUT

      inverted: true

  - platform: tuya_wifi_mcu

    name: b4-input1-tuya

    dp_id: 111

    bind_binary_sensor_id: b4_input01

    internal: true

  - platform: gpio

    name: "b4-input02"

    id: "b4_input02"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 1

      mode: INPUT

      inverted: true

  - platform: tuya_wifi_mcu

    name: b4-input2-tuya

    dp_id: 112

    bind_binary_sensor_id: b4_input02

    internal: true

  - platform: gpio

    name: "b4-input03"

    id: "b4_input03"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 2

      mode: INPUT

      inverted: true

  - platform: tuya_wifi_mcu

    name: b4-input3-tuya

    dp_id: 113

    bind_binary_sensor_id: b4_input03

    internal: true

  - platform: gpio

    name: "b4-input04"

    id: "b4_input04"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 3

      mode: INPUT

      inverted: true

  - platform: tuya_wifi_mcu

    name: b4-input4-tuya

    dp_id: 114

    bind_binary_sensor_id: b4_input04

    internal: true

##pull-up resistance on PCB

  - platform: gpio

    name: "b8-W1-io47"

    pin: 

      number: 47

      inverted: true

  - platform: gpio

    name: "b8-W1-io48"

    pin: 

      number: 48

      inverted: true

  - platform: gpio

    name: "b8-W1-io17"

    pin: 

      number: 17

      inverted: true

  - platform: gpio

    name: "b8-W1-io40"

    pin: 

      number: 40

      inverted: true

## without resistance on PCB

  - platform: gpio

    name: "b8-13"

    pin: 

      number: 13

      inverted:  false

  - platform: gpio

    name: "b8-14"

    pin: 

      number: 14

      inverted:  false

  - platform: gpio

    name: "b8-21"

    pin: 

      number: 21

      inverted:  false

  - platform: gpio

    name: "b8-0"

    pin: 

      number: 0

      inverted:  false

ads1115:

  - address: 0x48

sensor:

  - platform: ads1115

    multiplexer: 'A0_GND'

    gain: 6.144

    resolution: 16_BITS

    name: "ADS1115 Channel A0-GND"

    update_interval: 5s

  - platform: ads1115

    multiplexer: 'A1_GND'

    gain: 6.144

    name: "ADS1115 Channel A1-GND"

    update_interval: 5s

  - platform: ads1115

    multiplexer: 'A2_GND'

    gain: 6.144

    name: "ADS1115 Channel A2-GND"

    update_interval: 5s

  - platform: ads1115

    multiplexer: 'A3_GND'

    gain: 6.144

    name: "ADS1115 Channel A3-GND"

    update_interval: 5s

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 B4");

download yaml file:

.txt

B4-HA-Tuya.txt (Size: 5.63 KB / Downloads: 74)

B4 ESPHome yaml for home assistant without tuya

Posted by: admin - 01-14-2026, 03:45 AM - Forum: B4 - No Replies

Code:
esphome:

  name: b4

  friendly_name: b4

esp32:

  board: esp32-s3-devkitc-1

  framework:

    type: arduino

# Enable logging

logger: 

   hardware_uart: USB_SERIAL_JTAG

# Enable Home Assistant API

api:

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: 0x24

uart:

  - id: uart_1    #RS485

    baud_rate: 9600

    debug:

      direction: BOTH

      dummy_receiver: true

      after:

        timeout: 10ms

    tx_pin: 38

    rx_pin: 39

switch:

  - platform: uart

    uart_id: uart_1

    name: "RS485 Button"

    data: [0x11, 0x22, 0x33, 0x44, 0x55]

  - platform: gpio

    name: "b4-output01"

    id: "b4_output01"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 4

      mode: OUTPUT

      inverted: true

  - platform: gpio

    name: "b4-output02"

    id: "b4_output02"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 5

      mode: OUTPUT

      inverted: true

  - platform: gpio

    name: "b4-output03"

    id: "b4_output03"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 6

      mode: OUTPUT

      inverted: true

  - platform: gpio

    name: "b4-output04"

    id: "b4_output04"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 7

      mode: OUTPUT

      inverted: true

binary_sensor:

  - platform: gpio

    name: "b4-input01"

    id: "b4_input01"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 0

      mode: INPUT

      inverted: true

  - platform: gpio

    name: "b4-input02"

    id: "b4_input02"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 1

      mode: INPUT

      inverted: true

  - platform: gpio

    name: "b4-input03"

    id: "b4_input03"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 2

      mode: INPUT

      inverted: true

  - platform: gpio

    name: "b4-input04"

    id: "b4_input04"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 3

      mode: INPUT

      inverted: true

##pull-up resistance on PCB

  - platform: gpio

    name: "b8-W1-io47"

    pin: 

      number: 47

      inverted: true

  - platform: gpio

    name: "b8-W1-io48"

    pin: 

      number: 48

      inverted: true

  - platform: gpio

    name: "b8-W1-io17"

    pin: 

      number: 17

      inverted: true

  - platform: gpio

    name: "b8-W1-io40"

    pin: 

      number: 40

      inverted: true

## without resistance on PCB

  - platform: gpio

    name: "b8-13"

    pin: 

      number: 13

      inverted:  false

  - platform: gpio

    name: "b8-14"

    pin: 

      number: 14

      inverted:  false

  - platform: gpio

    name: "b8-21"

    pin: 

      number: 21

      inverted:  false

  - platform: gpio

    name: "b8-0"

    pin: 

      number: 0

      inverted:  false

ads1115:

  - address: 0x48

sensor:

  - platform: ads1115

    multiplexer: 'A0_GND'

    gain: 6.144

    resolution: 16_BITS

    name: "ADS1115 Channel A0-GND"

    update_interval: 5s

  - platform: ads1115

    multiplexer: 'A1_GND'

    gain: 6.144

    name: "ADS1115 Channel A1-GND"

    update_interval: 5s

  - platform: ads1115

    multiplexer: 'A2_GND'

    gain: 6.144

    name: "ADS1115 Channel A2-GND"

    update_interval: 5s

  - platform: ads1115

    multiplexer: 'A3_GND'

    gain: 6.144

    name: "ADS1115 Channel A3-GND"

    update_interval: 5s

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 B4");

download yaml file:

.txt

B4-HA-Without-Tuya.txt (Size: 3.87 KB / Downloads: 64)

B4M ESPHome yaml for home assistant without tuya

Posted by: admin - 01-14-2026, 03:45 AM - Forum: B4M - No Replies

Code:
esphome:

  name: b4

  friendly_name: b4

esp32:

  board: esp32-s3-devkitc-1

  framework:

    type: arduino

# Enable logging

logger: 

   hardware_uart: USB_SERIAL_JTAG

# Enable Home Assistant API

api:

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: 0x24

uart:

  - id: uart_1    #RS485

    baud_rate: 9600

    debug:

      direction: BOTH

      dummy_receiver: true

      after:

        timeout: 10ms

    tx_pin: 38

    rx_pin: 39

switch:

  - platform: uart

    uart_id: uart_1

    name: "RS485 Button"

    data: [0x11, 0x22, 0x33, 0x44, 0x55]

  - platform: gpio

    name: "b4-output01"

    id: "b4_output01"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 4

      mode: OUTPUT

      inverted: true

  - platform: gpio

    name: "b4-output02"

    id: "b4_output02"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 5

      mode: OUTPUT

      inverted: true

  - platform: gpio

    name: "b4-output03"

    id: "b4_output03"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 6

      mode: OUTPUT

      inverted: true

  - platform: gpio

    name: "b4-output04"

    id: "b4_output04"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 7

      mode: OUTPUT

      inverted: true

binary_sensor:

  - platform: gpio

    name: "b4-input01"

    id: "b4_input01"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 0

      mode: INPUT

      inverted: true

  - platform: gpio

    name: "b4-input02"

    id: "b4_input02"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 1

      mode: INPUT

      inverted: true

  - platform: gpio

    name: "b4-input03"

    id: "b4_input03"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 2

      mode: INPUT

      inverted: true

  - platform: gpio

    name: "b4-input04"

    id: "b4_input04"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 3

      mode: INPUT

      inverted: true

##pull-up resistance on PCB

  - platform: gpio

    name: "b8-W1-io47"

    pin: 

      number: 47

      inverted: true

  - platform: gpio

    name: "b8-W1-io48"

    pin: 

      number: 48

      inverted: true

  - platform: gpio

    name: "b8-W1-io17"

    pin: 

      number: 17

      inverted: true

  - platform: gpio

    name: "b8-W1-io40"

    pin: 

      number: 40

      inverted: true

## without resistance on PCB

  - platform: gpio

    name: "b8-13"

    pin: 

      number: 13

      inverted:  false

  - platform: gpio

    name: "b8-14"

    pin: 

      number: 14

      inverted:  false

  - platform: gpio

    name: "b8-21"

    pin: 

      number: 21

      inverted:  false

  - platform: gpio

    name: "b8-0"

    pin: 

      number: 0

      inverted:  false

ads1115:

  - address: 0x48

sensor:

  - platform: ads1115

    multiplexer: 'A0_GND'

    gain: 6.144

    resolution: 16_BITS

    name: "ADS1115 Channel A0-GND"

    update_interval: 5s

  - platform: ads1115

    multiplexer: 'A1_GND'

    gain: 6.144

    name: "ADS1115 Channel A1-GND"

    update_interval: 5s

  - platform: ads1115

    multiplexer: 'A2_GND'

    gain: 6.144

    name: "ADS1115 Channel A2-GND"

    update_interval: 5s

  - platform: ads1115

    multiplexer: 'A3_GND'

    gain: 6.144

    name: "ADS1115 Channel A3-GND"

    update_interval: 5s

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 B4");

download yaml file:

.txt

B4-HA-Without-Tuya.txt (Size: 3.87 KB / Downloads: 66)

B4 ESP32-S3 IO pins define

Posted by: admin - 01-14-2026, 03:43 AM - Forum: B4 - No Replies

IIC Bus:

SDA:GPIO8
SCL:GPIO18

PCF8574: i2c address:0x24

PCF8574->P0 (digital input-1)
PCF8574->P1 (digital input-2)
PCF8574->P2 (digital input-3)
PCF8574->P3 (digital input-4)

PCF8574->P4 (relay1)
PCF8574->P5 (relay2)
PCF8574->P6 (relay3)
PCF8574->P7 (relay4)

24C02 EPROM i2c address: 0x50
DS3231 RTC i2c address: 0x68
SSD1306 display: i2c address:0x3c
ADS1115 (4CH ADC): i2c address:0x48

Analog input (A1: DC 0-5v)
Analog input (A2: DC 0-5v)
Analog input (A3: DC 4-20mA)
Analog input (A4: DC 4-20mA)

-----------------
1-wire GPIOs (with pull-up resistance on PCB):
1-wire-1:GPIO47
1-wire-2:GPIO48
1-wire-3:GPIO17
1-wire-4:GPIO40
-----------------
free GPIOs (without pull-up resistance on PCB):
GPIO13
GPIO14
GPIO21
-----------------

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:GPIO39
TXD:GPIO38

Tuya module:
RXD:GPIO16
TXD:GPIO15

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:GPIO5

B4M ESP32-S3 IO pins define

Posted by: admin - 01-14-2026, 03:42 AM - Forum: B4M - No Replies

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