Wemos D1 mini go offline

Need Help With My Project
1

Hello,
I need a little help with a code.

It is an command depending on the light intensity of an 12V motor for a retractable awning.

If it is sunny, the motor starts in the open direction. If shaded, the motor start reverse.
For the stop I have ends limiters.

At the moment, it’s almost ok, I found the value for LDR for “sun” / “shadow” but the problem for which I ask for help, is when the lighting is around the value set in the code, the motot receives open / closed commands without reaching the ends. I don’t know how to explain now, a kind of “oscilating” …

For commands I use Blink slider (1=automatic - LDR value 1023 / 2= closed / 3=open)

I use a Wemos D1 mini module and a module with two relays for motor control (windshield at 12V)

Code: (there are a few more nonsense lines, I also wanted to order a cooling fan with a sensor, but I use a dedicated module :slightly_smiling_face:)

#define BLYNK_PRINT Serial

#include <ESP8266WiFi.h>
#include <ESP8266mDNS.h>
#include <WiFiUdp.h>
#include <ArduinoOTA.h>
#include <BlynkSimpleEsp8266.h>
#include <DHT.h>

// Blynk
char auth[] = "...";
char ssid[] = "...";
char pass[] = "..."; 

// OTA
#ifndef STASSID
#define STASSID "..."
#define STAPSK  "..."
#endif

int ldrValue = 0; // LDR initializare la 0
int sliderValue = 0; // Blynk slider: 1-automat(soare); 2-inchis; 3-deschis;

// OTA
const char* ssid1 = STASSID;
const char* password = STAPSK;

BLYNK_WRITE(V1)
{
  sliderValue = param.asInt(); // assigning incoming value from pin V1 to a variable
}

void setup() {
  Serial.begin(115200);

  //OTA
  Serial.println("Booting");
  WiFi.mode(WIFI_STA);
  WiFi.begin(ssid1, password);
  while (WiFi.waitForConnectResult() != WL_CONNECTED) {
Serial.println("Connection Failed! Rebooting...");
delay(5000);
ESP.restart();
  }
  ArduinoOTA.onStart([]() {
String type;
if (ArduinoOTA.getCommand() == U_FLASH) {
  type = "sketch";
} else { // U_FS
  type = "filesystem";
}

Serial.println("Start updating " + type);
  });
  ArduinoOTA.onEnd([]() {
Serial.println("\nEnd");
  });
  ArduinoOTA.onProgress([](unsigned int progress, unsigned int total) {
Serial.printf("Progress: %u%%\r", (progress / (total / 100)));
  });
  ArduinoOTA.onError([](ota_error_t error) {
Serial.printf("Error[%u]: ", error);
if (error == OTA_AUTH_ERROR) {
  Serial.println("Auth Failed");
} else if (error == OTA_BEGIN_ERROR) {
  Serial.println("Begin Failed");
} else if (error == OTA_CONNECT_ERROR) {
  Serial.println("Connect Failed");
} else if (error == OTA_RECEIVE_ERROR) {
  Serial.println("Receive Failed");
} else if (error == OTA_END_ERROR) {
  Serial.println("End Failed");
}
  });
  ArduinoOTA.begin();
  Serial.println("Ready");
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());
  //************************
  
  //pentru STOP?
  pinMode(LED_BUILTIN, OUTPUT);

  pinMode(5, OUTPUT); // releu sens deschidere wemos D1
  pinMode(4, OUTPUT); // releu sens inchidere wemos D2
  
  digitalWrite(5, HIGH); 
  digitalWrite(4, HIGH); 
  digitalWrite(LED_BUILTIN, HIGH);

  Blynk.begin(auth, ssid, pass);  
}
  
void loop(){
  ArduinoOTA.handle();
  Blynk.run();
  
  if(sliderValue == 1)
  {
ldrValue = analogRead(A0);
if(ldrValue >= 1023)
{
  digitalWrite(5, HIGH); //deschidere D1
  digitalWrite(4, LOW); 
  digitalWrite(LED_BUILTIN, HIGH);
  Serial.print("V1 Slider value is: ");
  Serial.println(sliderValue);
  Serial.println("deschidere marchiza");
}
else 
if(ldrValue < 1023){
  digitalWrite(5, LOW); //retragere
  digitalWrite(4, HIGH);
  digitalWrite(LED_BUILTIN, HIGH); 
  Serial.print("V1 Slider value is: ");
  Serial.println(sliderValue);
  Serial.println("retragere marchiza");
}
  }

  if(sliderValue == 2)
  {
digitalWrite(5, LOW); //retragere
digitalWrite(4, HIGH);
digitalWrite(LED_BUILTIN, HIGH); 
Serial.print("V1 Slider value is: ");
Serial.println(sliderValue);
Serial.println("retragere marchiza");
  }

  if(sliderValue == 3)
  {
digitalWrite(5, HIGH); //deschidere D1
digitalWrite(4, LOW); 
digitalWrite(LED_BUILTIN, HIGH);
Serial.print("V1 Slider value is: ");
Serial.println(sliderValue);
Serial.println("deschidere marchiza");
  }
}

Problem apear when, in the code above, the line with ( ```
else
if(ldrValue < 1023)… )
if I changed the value 1023 into 800 (for histerezis between 1023 sunny / 800 shaded). Now after the first command, the module disconnects. It appears is “offline” and must be reset.

Any ideas ???

2

Your void loop is your problem.
Read this:

Pete.

3

Thanks!
I will read and learn :slight_smile:

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