Erratic behaviour MKR Wifi 1010 with relays

[Barriete]

Hi all,
I'm experiencing several problems with a personal project. The project consist of a MKR Wifi 1010 and 2 relays boards to control persians with using buttons and a web server.

Everything works fine at startup but as time goes by the webserver turns to by unreachable and some days after the buttons doesn't work and I have to reset manually the board. I have tries some strategies without getting a finding.

Has anybody experienced similar problems? I attach the connection diagram hoping someone in the forum could give some idea to follow.

Many thanks in advance.
Alberto
ArduinoPersians.pdf (125.6 KB)

[Juraj]

do you use String in the sketch?

[intstarep]

You have a overflow in mind, right? My question to Juraj and maybe that helps to find out:
I use

// free mem?

Serial.print("freeMemory: ");
Serial.println(freeMemory());

#ifdef __arm__
// should use uinstd.h to define sbrk but Due causes a conflict
extern "C" char *sbrk(int incr);
#else  // __ARM__
extern char *__brkval;
#endif // __arm__

int freeMemory()
{
  char top;
#ifdef __arm__
  return &top - reinterpret_cast<char *>(sbrk(0));
#elif defined(CORE_TEENSY) || (ARDUINO > 103 && ARDUINO != 151)
  return &top - __brkval;
#else  // __arm__
  return __brkval ? &top - __brkval : &top - __malloc_heap_start;
#endif // __arm__
}

I am right that when the free memory stays constant the same i have no overflow or can i also have a crash in the heap with stable values?

[Barriete]

Thanks for your quick reply.

I'm using string variables.
I tried this piece of code to monitor the available memory. Even I upload this amount to the cloud but at certain moment the board is not longer sending this information (I guess, the board losses the internet connection). I analyzed the uploaded data but I didn't see any changes. Free memory kept at the same level.

The code
PersianasDobleCloudNTPEuropa.ino (27.4 KB)

[Barriete]

Hi all,

after several test, I've implemented a second power supply following the post of A34F] in [SOLVED] Wiring of a dual channel relay: HL-52S question - #3 by Aeherst

The behaviour is more consistent now but there are some problems that I've unable to solve.
First: If I reset the router, the board is not able to reconnect again to the WLAN. Anybody has suffer this problem? and How did you solve it?

Thanks in advance,
Alberto
ArduinoPersians_v2.pdf (166.8 KB)