Smart Home Automation Forum - [Arduino demo source code for KC868-A4]-11 how to create wifi connection

Code:
#include <WiFi.h>

void setup(){

  WiFi.begin("SSID", "PASSWORD");

  // SSID and password is the router you want to connect

  while (WiFi.status() != WL_CONNECTED) {

    delay(500);

    Serial.print(".");

  }

  Serial.begin(9600);

}

void loop(){

  Serial.println("Local IP:");

  Serial.println(WiFi.localIP());

  delay(1000);

}

[attachment=786][attachment=787]

Hello,I have a problem.....wrecked my A4 board with this code.....

I uploaded this code (while I forgot to change the SSID / Password) and the code was uploaded fine by COM10.Then suddenly COM10 disconnected.

Its stays disconnected. Windows does not show COM10 anymore.
I press Reset...voila...com10 connects...
BUT if I release the Reset button, COM disconnects.

I rebooted windows...no difference :-)
IDE only detects board, while I press reset button (but during this I cannot reflash code)
If I release reset...board is gone

Huh

(07-05-2022, 09:05 PM)masoos Wrote: [ -> ]Hello,I have a problem.....wrecked my A4 board with this code.....

I uploaded this code (while I forgot to change the SSID / Password) and the code was uploaded fine by COM10.Then suddenly COM10 disconnected.

Its stays disconnected. Windows does not show COM10 anymore.
I press Reset...voila...com10 connects...
BUT if I release the Reset button, COM disconnects.

I rebooted windows...no difference :-)
IDE only detects board, while I press reset button (but during this I cannot reflash code)
If I release reset...board is gone

I found solution.

open other code and flash again....in the "connecting ........." info wait till 80% progress is made and then release reset button. If you are happy with the timing, the new code starts flashing before windows is closing COM Port

if you are using KC868-A4 , actually you not need to use "download" button, it can auto download. just make sure your have stable dc12v for the board.

(07-05-2022, 10:32 PM)admin Wrote: [ -> ]if you are using KC868-A4 , actually you not need to use "download" button, it can auto download. just make sure your have stable dc12v for the board.

Hello,

I still encounter the problem, that the board is only recognozed by my USB when I hold the reset button. when I release reset, I hear windows sound and the USB disconnects. I searched for this problem and I found that other encountered similar problems with other boards. https://forum.arduino.cc/t/arduinos-only...sed/305602....

I think this has something to do with the RTS signal. There I see a difference with or without reset

Any idea how I can fix this?

I have latest USB drivers
The board shows a stable 5V and 3,3V signal on the oscilloscope.

Thanks,
M

can you change a USB cable for a test.

(08-15-2022, 03:24 AM)admin Wrote: [ -> ]can you change a USB cable for a test.

did, no effect

(08-15-2022, 10:25 AM)masoos Wrote: [ -> ]
(08-15-2022, 03:24 AM)admin Wrote: [ -> ]can you change a USB cable for a test.
did, no effect

It only works, if I connect Pin 14 on the CH340 (RTS) to GND....the USB is connected.
What is nomal level on RTS without Reset? Is it Low or high?. I have a high (3,16V)

Thanks

tomorrow we check.

(08-15-2022, 11:15 AM)admin Wrote: [ -> ]tomorrow we check.

I'm sorry, Problem was fault power supply. now with more stable source it works! Thanks

ok, i have told you , use a stable DC12v power supply.