Digital Pin D5 and D6 don't work

Need Help With My Project
1

Hello Blynk Community,

while i was trying to control my DC motor with a L9110s my digital Pins D5 and D6 suddenly stopped working. I loaded an (empty) new sketch on my board to see if there is a mistake in my code, but the pins still didn’t react.
When i am measuring the outputs the digital pin D5 always shows 3,3V. The pin D6 always shows 1,6V. Even if i try to change the status in the code, the pins always remain in output 3,3V and 1,6V.

I tried a lot to control them or change their status, but they never seem to react. I don’t get it. Do I need to define a certain pinMode in the code? Or are the pins just destroyed?

PS: It is just with these two pins. All the other ones work.

Best regards
Timo

2

What specific ESP8266 device are you using?
billd

3

Hey Bill
i am using is a NodeMCU Lua Amica Modul V2 ESP8266 ESP-12F WIFI Wifi Development Board.

4

If you are using actual code for pin control, AKA digitalWrite() etc, then YES you need the appropriate pinMode() for each pin used.

5

Post your sketch, we can have a look.
billd

6 
#define BLYNK_PRINT Serial  
#include <ESP8266WebServer.h> 
#include <SimpleTimer.h>
#include <ESP8266WiFi.h> 
#include <BlynkSimpleEsp8266.h>


const int A1A = D5; // WarmwasserkugelhahnA
const int A1B = D6; // WarmwasserkugelhahnA
const int B1A = D4; // KaltwasserkugelhahnB
const int B1B = D7; // KaltwasserkugelhahnB


// temperature sensor
int Thermistorstatus;
int ThermistorPin = 0;
int Vo;
float R1 = 10000;
float logR2, R2, T;
float c1 = 1.009249522e-03, c2 = 2.378405444e-04, c3 = 2.019202697e-07;


// starting loop from simple timer
SimpleTimer timer;


void WarmwasserKugelhahn(){
  WarmwasserKugelhahnA ('R');// Turn motor A to RIGHT
  delay(3000);
  WarmwasserKugelhahnA ('0');
  Serial.println("Stopp");
  delay(3000);
}


void KaltwasserKugelhahn(){
  KaltwasserKugelhahnB ('L');// Turn motor B to RIGHT
  delay(3000);
  KaltwasserKugelhahnB ('0');
  Serial.println("Stopp");
  delay(3000);
}


// loop for temperature sensor
void Temperaturmesser(){
 
  Vo = analogRead(ThermistorPin); // ESP8266 is reading the temperature on analog Pin Number AD0 and declarates it to integer "Vo".
  R2 = R1 * (1023.0 / (float)Vo - 1.0);  //following is the calculation for the temperature.
  logR2 = log(R2);
  T = (1.0 / (c1 + c2*logR2 + c3*logR2*logR2*logR2));
  T = T - 273.15;
  T = (T * 9.0)/ 5.0 + 32.0; 
  T = (T - 32)* 5/9;
  Serial.print("Temperature: "); // printing to serial monitor. 
  Serial.print(T);
  Serial.println(" °C"); 
  delay(500); // repeating the process every 1/2 seconds.
}


void WarmwasserKugelhahnA(char d){
  if(d =='R'){
    digitalWrite(A1A,LOW);
    digitalWrite(A1B,HIGH); 
  }else if (d =='L'){
    digitalWrite(A1A,HIGH);
    digitalWrite(A1B,LOW);    
  }else{
    digitalWrite(A1A,LOW);
    digitalWrite(A1B,LOW);    
  }
}


void KaltwasserKugelhahnB(char d){
    if(d =='R'){
      digitalWrite(B1A,LOW);
      digitalWrite(B1B,HIGH); 
    }else if(d =='L'){
      digitalWrite(B1A,HIGH);
      digitalWrite(B1B,LOW);    
    }else{     
      digitalWrite(B1A,LOW);
      digitalWrite(B1B,LOW);     
    }
}


void setup() {
  Serial.begin(115200);
  pinMode(A1A,OUTPUT);
  pinMode(A1B,OUTPUT);
  pinMode(B1A,OUTPUT);
  pinMode(B1B,OUTPUT);    
  delay(3000);
  timer.setInterval(1000L, WarmwasserKugelhahn);
  timer.setInterval(1000L, KaltwasserKugelhahn);
  timer.setInterval(1000L, Temperaturmesser);
  }


void loop() {
  timer.run(); // runs the simple Timer library   
}
7

They could be floating. Did you try a simple non blynk sketch that

digitalWrite(D5,LOW);

Then test the voltage…