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[arduino code examples for B8]-03 Read ADS1115 analog input ports value

Posted by: admin - 06-23-2025, 04:40 AM - Forum: B8 - No Replies

Code:
/*

 * This program reads voltage values from the ADS1115 analog-to-digital converter

 * on all four channels (A0, A1, A2, A3) and prints the results through the serial port.

 * The ADS1115 communicates via the I2C protocol. This version of the code includes 

 * the capability to specify custom SDA and SCL pins for I2C communication.

 *

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

 *

 */

#include <Wire.h>                // Library for I2C communication

#include <DFRobot_ADS1115.h>     // Library for ADS1115 ADC module

// Define the I2C SDA and SCL pins for communication with ADS1115

#define SDA_PIN 8  

#define SCL_PIN 18  

// Initialize ADS1115 instance using the Wire library

DFRobot_ADS1115 ads(&Wire);

void setup(void) 

{

    // Begin serial communication at a baud rate of 115200

    Serial.begin(115200);

    // Initialize the I2C bus using the defined SDA and SCL pins

    Wire.begin(SDA_PIN, SCL_PIN);

    // Set the I2C address for the ADS1115 (default: 0x49)

    ads.setAddr_ADS1115(ADS1115_IIC_ADDRESS0);   // Address is 0x49

    // Set the gain for the ADS1115 (2/3x gain allows for a maximum input voltage of 6.144V)

    ads.setGain(eGAIN_TWOTHIRDS);

    // Set the ADS1115 to operate in single-shot mode (each reading is a single conversion)

    ads.setMode(eMODE_SINGLE);

    // Set the sample rate to 128 samples per second (SPS)

    ads.setRate(eRATE_128);

    // Set the operational status mode to single-conversion start

    ads.setOSMode(eOSMODE_SINGLE);

    // Initialize the ADS1115 module

    ads.init();

}

void loop(void) 

{

    // Check if the ADS1115 is properly connected and functioning

    if (ads.checkADS1115())

    {

        // Variables to store the voltage readings for each channel

        int16_t adc0, adc1, adc2, adc3;

        // Read the voltage from channel A0 and print the value

        adc0 = ads.readVoltage(0);

        Serial.print("A0:");

        Serial.print(adc0);

        Serial.print("mV,  ");    // Print the value in millivolts

        // Read the voltage from channel A1 and print the value

        adc1 = ads.readVoltage(1);

        Serial.print("A1:");

        Serial.print(adc1);

        Serial.print("mV,  ");    // Print the value in millivolts

        // Read the voltage from channel A2 and print the value

        adc2 = ads.readVoltage(2);

        Serial.print("A2:");

        Serial.print(adc2);

        Serial.print("mV,  ");    // Print the value in millivolts

        // Read the voltage from channel A3 and print the value

        adc3 = ads.readVoltage(3);

        Serial.print("A3:");

        Serial.print(adc3);

        Serial.println("mV");     // Print the value in millivolts and end the line

    }

    else

    {

        // If ADS1115 is not connected, print a message indicating disconnection

        Serial.println("ADS1115 Disconnected!");

    }

    // Wait for 1 second before the next loop iteration

    delay(1000);

}

arduino ino file download:

.zip

3-ads1115_adc.zip (Size: 1.2 KB / Downloads: 263)
BIN file (you can use esp32 download tool download to ESP32-S3 with address 0x0 then directly to use) download:

.zip

3-ads1115_adc.ino.merged.zip (Size: 192.69 KB / Downloads: 300)

[arduino code examples for B8]-02 Read digital input ports state

Posted by: admin - 06-23-2025, 04:36 AM - Forum: B8 - 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 = 0; pin < 8; 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: 837 bytes / Downloads: 277)
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: 192.29 KB / Downloads: 313)

[arduino code examples for B8]-01 Turn ON/OFF OUTPUT

Posted by: admin - 06-23-2025, 04:31 AM - Forum: B8 - 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 = 8; i < 16; 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 = 8; i < 16; 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 = 8; i < 16; 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: 927 bytes / Downloads: 282)
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: 192.06 KB / Downloads: 278)

B8 ESPHome yaml for home assistant with tuya

Posted by: admin - 06-23-2025, 04:28 AM - Forum: B8 - No Replies

Code:
esphome:

  name: b8

  friendly_name: b8

  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: tugmdoiviinh13kv

  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: "b8-output01"

    id: "b8_output01"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 8

      mode: OUTPUT

      inverted: true

  - platform: tuya_wifi_mcu

    name: b8-output1-tuya

    dp_id: 1

    # hide from homeassistant ui

    internal: true

    # bind other switch, sync state

    bind_switch_id: "b8_output01"

  - platform: gpio

    name: "b8-output02"

    id: "b8_output02"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 9

      mode: OUTPUT

      inverted: true

  - platform: tuya_wifi_mcu

    name: b8-output2-tuya

    dp_id: 2

    # hide from homeassistant ui

    internal: true

    # bind other switch, sync state

    bind_switch_id: "b8_output02"

  - platform: gpio

    name: "b8-output03"

    id: "b8_output03"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 10

      mode: OUTPUT

      inverted: true

  - platform: tuya_wifi_mcu

    name: b8-output3-tuya

    dp_id: 3

    # hide from homeassistant ui

    internal: true

    # bind other switch, sync state

    bind_switch_id: "b8_output03"

  - platform: gpio

    name: "b8-output04"

    id: "b8_output04"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 11

      mode: OUTPUT

      inverted: true

  - platform: tuya_wifi_mcu

    name: b8-output4-tuya

    dp_id: 4

    # hide from homeassistant ui

    internal: true

    # bind other switch, sync state

    bind_switch_id: "b8_output04"

  - platform: gpio

    name: "b8-output05"

    id: "b8_output05"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 12

      mode: OUTPUT

      inverted: true

  - platform: tuya_wifi_mcu

    name: b8-output5-tuya

    dp_id: 5

    # hide from homeassistant ui

    internal: true

    # bind other switch, sync state

    bind_switch_id: "b8_output05"

  - platform: gpio

    name: "b8-output06"

    id: "b8_output06"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 13

      mode: OUTPUT

      inverted: true

  - platform: tuya_wifi_mcu

    name: b8-output6-tuya

    dp_id: 6

    # hide from homeassistant ui

    internal: true

    # bind other switch, sync state

    bind_switch_id: "b8_output06"

  - platform: gpio

    name: "b8-output07"

    id: "b8_output07"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 14

      mode: OUTPUT

      inverted: true

  - platform: tuya_wifi_mcu

    name: b8-output7-tuya

    dp_id: 101

    # hide from homeassistant ui

    internal: true

    # bind other switch, sync state

    bind_switch_id: "b8_output07"

  - platform: gpio

    name: "b8-output08"

    id: "b8_output08"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 15

      mode: OUTPUT

      inverted: true

  - platform: tuya_wifi_mcu

    name: b8-output8-tuya

    dp_id: 102

    # hide from homeassistant ui

    internal: true

    # bind other switch, sync state

    bind_switch_id: "b8_output08"

binary_sensor:

  - platform: gpio

    name: "b8-input01"

    id: "b8_input01"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 0

      mode: INPUT

      inverted: true

  - platform: tuya_wifi_mcu

    name: b8-input1-tuya

    dp_id: 111

    bind_binary_sensor_id: b8_input01

    internal: true

  - platform: gpio

    name: "b8-input02"

    id: "b8_input02"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 1

      mode: INPUT

      inverted: true

  - platform: tuya_wifi_mcu

    name: b8-input2-tuya

    dp_id: 112

    bind_binary_sensor_id: b8_input02

    internal: true

  - platform: gpio

    name: "b8-input03"

    id: "b8_input03"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 2

      mode: INPUT

      inverted: true

  - platform: tuya_wifi_mcu

    name: b8-input3-tuya

    dp_id: 113

    bind_binary_sensor_id: b8_input03

    internal: true

  - platform: gpio

    name: "b8-input04"

    id: "b8_input04"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 3

      mode: INPUT

      inverted: true

  - platform: tuya_wifi_mcu

    name: b8-input4-tuya

    dp_id: 114

    bind_binary_sensor_id: b8_input04

    internal: true

  - platform: gpio

    name: "b8-input05"

    id: "b8_input05"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 4

      mode: INPUT

      inverted: true

  - platform: tuya_wifi_mcu

    name: b8-input5-tuya

    dp_id: 115

    bind_binary_sensor_id: b8_input05

    internal: true

  - platform: gpio

    name: "b8-input06"

    id: "b8_input06"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 5

      mode: INPUT

      inverted: true

  - platform: tuya_wifi_mcu

    name: b8-input6-tuya

    dp_id: 116

    bind_binary_sensor_id: b8_input06

    internal: true

  - platform: gpio

    name: "b8-input07"

    id: "b8_input07"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 6

      mode: INPUT

      inverted: true

  - platform: tuya_wifi_mcu

    name: b8-input7-tuya

    dp_id: 117

    bind_binary_sensor_id: b8_input07

    internal: true

  - platform: gpio

    name: "b8-input08"

    id: "b8_input08"

    pin:

      pcf8574: pcf8574_hub_out_1

      number: 7

      mode: INPUT

      inverted: true

  - platform: tuya_wifi_mcu

    name: b8-input8-tuya

    dp_id: 118

    bind_binary_sensor_id: b8_input08

    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-io7"

    pin: 

      number: 7

      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 b8");

download yaml file:

.txt

B8-HA.txt (Size: 8.35 KB / Downloads: 173)

B8 ESP32-S3 IO pins define

Posted by: admin - 06-23-2025, 04:19 AM - Forum: B8 - No Replies

IIC Bus:

SDA:GPIO8
SCL:GPIO18

PCF8575: i2c address:0x22

PCF8575->P0 (digital input-1)
PCF8575->P1 (digital input-2)
PCF8575->P2 (digital input-3)
PCF8575->P3 (digital input-4)
PCF8575->P4 (digital input-5)
PCF8575->P5 (digital input-6)
PCF8575->P6 (digital input-7)
PCF8575->P7 (digital input-8)

PCF8575->P8 (relay1)
PCF8575->P9 (relay2)
PCF8575->P10 (relay3)
PCF8575->P11 (relay4)
PCF8575->P12 (relay5)
PCF8575->P13 (relay6)
PCF8575->P14 (relay7)
PCF8575->P15 (relay8)

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:GPIO7
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: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:GPIO5

IFTTT DI OnDelay

Posted by: job-systems - 06-22-2025, 01:41 AM - Forum: "KCS" v2 firmware system - Replies (2)

Hi, hope you are all fine.

Is it possible to have a Digital In (DI) to be true or ON for a fix number of seconds on the IF section before going to the THEN section and enabling a Digital Out (DO).

Example: I have laser barrier that flying insects pass by and activate it, I would like to not have false positives, and for example, ensure the DI is ON for 3 seconds fixed before activating the DO.

Thank you.

Attached Files Thumbnail(s)

KC868-A2 watchdog

Posted by: apps4check - 06-21-2025, 05:11 PM - Forum: KC868-A2 - Replies (1)

	Hello. Does KC868-A2 (with "KCS" firmware) have a hardware or software watchdog?

KinCony B8M ESP32-S3 Smart Controller released

Posted by: admin - 06-21-2025, 04:07 AM - Forum: News - No Replies

KinCony B8M ESP32 smart controller based on ESP32-S3-WROOM-1U (N16R8) wifi chip. Support 8 channel MOSFET output, 4 channel 1-wire GPIOs, 3 free GPIOs, 4 channel ADS1115 16bit analog input ports. One SD card using SPI bus. B8M include DS3231 high precision RTC clock chip. LCD display will show wifi and ethernet IP address and Tuya connection state. B8M have I2C bus extender and RS485 port. You can write any code by Arduino IDE / MicroPython / ESP-IDF development tool to ESP32 module. We will supply Arduino / ESP-IDF demo code for different samples. Everyone can modify and change the code for your own smart home automation system project. it support use by ESPHome for home assistant or tasmota firmware for smart home automation DIY. B8M use KCS v3 firmware, it support home assistant auto discovery function by MQTT, so without write any config code (zero code) for home assistant. B8M support Apple HomeKit, easy to use directly. Support save state LOG to SD Card. It use by local RTC clock, use timer work without internet. B8M support to use KinCony cloud server service, so that you can remote control and monitor your device by internet using mobile phone or computer web browser. note: (buy from KinCony Official Shop have KinCony cloud server 2 years free)
[Image: B8M_1.jpg]
Model No. KinCony B8M
Description: KinCony 8 Channel ESP32-S3 Smart Controller – B8M
Power supply: 12-24V DC
Processor: ESP32-S3-WROOM-1U (N16R8)
Size:
interfaces: Ethernet(RJ45)-LAN 100Mbps IPv4/IPv6,WiFi,RS485,Bluetooth,USB-C,LCD,I2C,Tuya Module
RTC: DS3231 high precision chip (battery socket on PCB)
SD Card: SPI bus
Installation method: DIN RAIL
LCD: SSD1306 I2C display
Outputs:
8CH MOSFET Outputs, every channel use MAX 10A driver IC
Inputs:
ADS1115 16bit ADC: 2CH analog input DC0-5V (A1,A2) 2CH analog input 4-20mA (A3,A4)
8CH dry contact inputs (optocoupler isolation, long distance circuit for MAX 500 meters cable)
3 buttons: 1:ESP32 Reset 2:ESP32 Download 3:Tuya config
1-Wire GPIO: 4CH (with pull-up resistance on PCB)
free GPIO: 3CH (without pull-up resistance on PCB, connect with ESP32 pin directly)
[Image: B8M_6.jpg]

[arduino code examples for B8M]-11 digital INPUT trigger OUTPUT directly

Posted by: admin - 06-21-2025, 04:03 AM - Forum: B8M - No Replies

Code:
/*

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

 *

 * This program reads 16 input states from a PCF8575 I/O expander and 

 * controls a corresponding 16-channel relay module. When an input pin 

 * is LOW, the corresponding relay is turned ON (LOW means ON for the relay).

 * When the input pin is HIGH, the corresponding relay is turned OFF.

 *

 * Pin Definitions:

 * - SDA: GPIO 38

 * - SCL: GPIO 39

 * - Input I2C Address: 0x24

 * - Relay I2C Address: 0x25

 */

#include <Wire.h>        // I2C communication

#include <PCF8575.h>     // Library to control the PCF8575 I/O expander

// Define I2C pins

#define SDA 8           // SDA pin

#define SCL 18           // SCL pin

// I2C addresses

#define RELAY_I2C_ADDRESS 0x22   // I2C address for the relay PCF8575 module

PCF8575 pcf8575_RL(RELAY_I2C_ADDRESS);    // Create an object for the relay PCF8575

void setup() {

  // Initialize I2C communication

  Wire.begin(SDA, SCL);

  // Initialize serial communication

  Serial.begin(115200);

  // Initialize input and relay modules

  pcf8575_RL.begin();

  // Turn off all relays at the start

  for (int i = 0; i < 8; i++) {

    pcf8575_RL.write(i, LOW);  // Assuming relays are LOW when OFF, setting all relays to OFF initially

  }

  Serial.println("System started: Input state controlling 8 relays");

}

void loop() {

  uint16_t inputState = 0;

  // Read the state of 16 inputs

  for (int i = 8; i < 16; i++) {

    if (pcf8575_RL.read(i)) {

      inputState |= (1 << i);  // If input is HIGH, set the corresponding bit

    } else {

      inputState &= ~(1 << i); // Otherwise, clear the corresponding bit

    }

  }

  // Control the relays based on the input state

  for (int i = 0; i < 8; i++) {

    if (inputState & (1 << i+8)) {

      pcf8575_RL.write(i, HIGH);  // If input is HIGH, turn the relay OFF

    } else {

      pcf8575_RL.write(i, LOW);   // If input is LOW, turn the relay ON

    }

  }

  // Delay for 500 milliseconds

  delay(500);

}

arduino ino file download:

.zip

11-input-trigger-output.zip (Size: 1,018 bytes / Downloads: 333)
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: 189.37 KB / Downloads: 306)

[arduino code examples for B8M]-10 Print TEXT on SSD1306 OLED displayer

Posted by: admin - 06-21-2025, 04:01 AM - Forum: B8M - No Replies

Code:
/*

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

 * 

 * This Arduino program demonstrates how to display text on an SSD1306 128x64 OLED display using the U8g2 library.

 * The program draws two lines of text on the display:

 * - The first line is "KINCONY" in a larger font.

 * - The second line is "www.kincony.com" in a smaller font.

 * 

 * The display is connected via I2C (software implementation) with:

 * - SCL (clock) on pin IO18

 * - SDA (data) on pin IO8

 * 

 * The display's I2C address is set to 0x3C.

 */

#include <U8g2lib.h>  // Include the U8g2 library for controlling the OLED display

#include <Wire.h>     // Include the Wire library for I2C communication

// Initialize the display using the software I2C method (SCL = IO18, SDA = IO8)

U8G2_SSD1306_128X64_NONAME_F_SW_I2C u8g2(U8G2_R0,  18, 8, U8X8_PIN_NONE);  // Screen rotation: U8G2_R0

// Function to display page 1 content

void page1() {

  // Set font size 18 for the larger "KINCONY" text

  u8g2.setFont(u8g2_font_timR18_tf);  // Use the Times Roman font, size 18

  u8g2.setFontPosTop();               // Set the text position at the top of the display

  u8g2.setCursor(5, 0);               // Position the cursor at coordinates (5, 0)

  u8g2.print("KINCONY");              // Display the text "KINCONY" on the screen

  // Set font size 12 for the smaller "www.kincony.com" text

  u8g2.setFont(u8g2_font_timR12_tf);  // Use the Times Roman font, size 12

  u8g2.setCursor(0, 40);              // Position the cursor at coordinates (0, 40)

  u8g2.print("www.kincony.com");      // Display the text "www.kincony.com"

}

// Setup function, runs once when the program starts

void setup() {

  // Set the I2C address for the display to 0x3C

  u8g2.setI2CAddress(0x3C*2);  // I2C address shift for 8-bit format

  // Initialize the display

  u8g2.begin();

  // Enable UTF-8 character printing for the display

  u8g2.enableUTF8Print();  // Allow UTF-8 encoded text to be printed

}

// Main loop function, continuously runs after setup()

void loop() {

  // Begin the display drawing process

  u8g2.firstPage();  // Prepare the first page for drawing

  do {

    // Call the page1() function to draw content on the display

    page1();

  } while (u8g2.nextPage());  // Continue to the next page until all pages are drawn

}

arduino ino file download:

.zip

10-oled-ssd1306.zip (Size: 1.11 KB / Downloads: 300)
BIN file (you can use esp32 download tool download to ESP32-S3 with address 0x0 then directly to use) download:

.zip

10-oled-ssd1306.ino.merged.zip (Size: 201.24 KB / Downloads: 311)

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