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+-- Forum: Technical Support (https://www.kincony.com/forum/forumdisplay.php?fid=20)
+--- Forum: KC868-A16 (https://www.kincony.com/forum/forumdisplay.php?fid=25)
+--- Thread: [Arduino IDE demo source code for KC868-A16]--#08-PCF8574-DO (/showthread.php?tid=1620)
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RE: [Arduino IDE demo source code for KC868-A16]--#08-PCF8574-DO - admin - 11-07-2024
work well now?
RE: [Arduino IDE demo source code for KC868-A16]--#08-PCF8574-DO - Bart81 - 12-07-2024
Hello, I have a KC868-A16 board, which I am new to. I want to use Arduino IDE because I know it. When connecting the KC868 board by USB-C to my PC (board powered or not powered with an external 12V power supply, is the same), nothing happens; I cannot see any Colm port with my Arduino IDE. So, please tell me how to connect the board and which board I should choose for my Arduino IDE. Thank you.
RE: [Arduino IDE demo source code for KC868-A16]--#08-PCF8574-DO - admin - 12-07-2024
take a photo how you wire of your KC868-A16.
in arduino IDE chose "NodeMCU-32S"
RE: [Arduino IDE demo source code for KC868-A16]--#08-PCF8574-DO - TurSolution - 01-08-2025
Hi
I have similar problem
I can not turn on or off the relay.
my code :
I use platform IO and framework arduino
#include "PCF8574.h"
#include <Wire.h>
#define Input_IIC_address 0x21
#define Input_IIC_address 0x22
#define Relay_IIC_address 0x24
#define Relay_IIC_address 0x25
GPIO_I2C gpioI2C;
// Set i2c address
PCF8574 pcf8574_input_1(Input_IIC_address,4,5);
PCF8574 pcf8574_input_2(Input_IIC_address,4,5);
PCF8574 pcf8574_relay_1(Relay_IIC_address,4,5);
PCF8574 pcf8574_relay_2(Relay_IIC_address,4,5);
void GPIO_I2C::Init()
{
#if ( PROFILE_COMPILE & GPIO_I2C_MODULE)
PRINT_LOG_API_PrintDebug("Init()..", MODULE_NAME, __LINE__);
byte count = 0;
Wire.begin(4, 5);
for (byte i = 8; i < 120; i++)
{
Wire.beginTransmission (i); // Begin I2C transmission Address (i)
if (Wire.endTransmission () == 0) // Receive 0 = success (ACK response)
{
Serial.print ("Found address: ");
Serial.print (i, DEC);
Serial.print (" (0x");
Serial.print (i, HEX); // PCF8574 7 bit address
Serial.println (")");
break;
}
}
//Wire.begin(); // Initialize I2C communication
// Wire.setClock(100000); // Set I2C clock to 100kHz (default is 400kHz)
pcf8574_relay_1.pinMode(P0, OUTPUT);
pcf8574_relay_1.pinMode(P1, OUTPUT);
pcf8574_relay_1.pinMode(P2, OUTPUT);
pcf8574_relay_1.pinMode(P3, OUTPUT);
pcf8574_relay_1.pinMode(P4, OUTPUT);
pcf8574_relay_1.pinMode(P5, OUTPUT);
pcf8574_relay_1.pinMode(P6, OUTPUT);
pcf8574_relay_1.pinMode(P7, OUTPUT);
pcf8574_relay_2.pinMode(P0, OUTPUT);
pcf8574_relay_2.pinMode(P1, OUTPUT);
pcf8574_relay_2.pinMode(P2, OUTPUT);
pcf8574_relay_2.pinMode(P3, OUTPUT);
pcf8574_relay_2.pinMode(P4, OUTPUT);
pcf8574_relay_2.pinMode(P5, OUTPUT);
pcf8574_relay_2.pinMode(P6, OUTPUT);
pcf8574_relay_2.pinMode(P7, OUTPUT);
pcf8574_input_1.pinMode(P0, INPUT);
pcf8574_input_1.pinMode(P1, INPUT);
pcf8574_input_1.pinMode(P2, INPUT);
pcf8574_input_1.pinMode(P3, INPUT);
pcf8574_input_1.pinMode(P4, INPUT);
pcf8574_input_1.pinMode(P5, INPUT);
pcf8574_input_1.pinMode(P6, INPUT);
pcf8574_input_1.pinMode(P7, INPUT);
pcf8574_input_2.pinMode(P0, INPUT);
pcf8574_input_2.pinMode(P1, INPUT);
pcf8574_input_2.pinMode(P2, INPUT);
pcf8574_input_2.pinMode(P3, INPUT);
pcf8574_input_2.pinMode(P4, INPUT);
pcf8574_input_2.pinMode(P5, INPUT);
pcf8574_input_2.pinMode(P6, INPUT);
pcf8574_input_2.pinMode(P7, INPUT);
if (pcf8574_relay_1.begin())
{
Serial.println("pcf8574_relay_1 OK");
}
else
{
Serial.println("pcf8574_relay_1 not OK");
}
Serial.print("Init pcf8574_2...");
if (pcf8574_relay_2.begin())
{
Serial.println("pcf8574_relay_2 OK");
}
else
{
Serial.println("pcf8574_relay_2 NOT OK");
}
}
void setup()
{
gpioI2C.Init();
}
void loop()
{
gpioI2C.TestOutputP1();
}
Please help me to active these lines
RE: [Arduino IDE demo source code for KC868-A16]--#08-PCF8574-DO - admin - 01-08-2025
because you have wrong wire. do you have the 9 bit green terminal, there are two point label "12V", you should connect with your power supply terminal.
RE: [Arduino IDE demo source code for KC868-A16]--#08-PCF8574-DO - TurSolution - 01-09-2025
(01-08-2025, 12:30 PM)admin Wrote: because you have wrong wire. do you have the 9 bit green terminal, there are two point label "12V", you should connect with your power supply terminal.
can you take my image and edit it due to your answer ? I don't understand your answer
RE: [Arduino IDE demo source code for KC868-A16]--#08-PCF8574-DO - TurSolution - 01-17-2025
let me know where t o connect wire
RE: [Arduino IDE demo source code for KC868-A16]--#08-PCF8574-DO - admin - 01-17-2025
see photo