BlynkSimpleWifi.h and Blynkrun() overwrite values of analog sensors

[BrunoMisseeuw]

REQUEST: Could someone with an Arduino (UNO) + WiFiShield and an analog sensor please test the following script, I have believe you’ll have the same problem as I do which is that as soon as Blynkrun() is run … the values returned by the analog sensor will be overwritten and be set to 1023. See also my post in the Issues and Errors forum.

Blynk.run of BlynkSImpleWifi.h sets analog pin values to 1023

Setup: I’m using an Arduino UNO with a WiFi shield and LCD Crystal Display. As a result I have no Digital Pins left for use and I’m using the Analog pins for both Digital Inputs and Analog Inputs. Problem: Now that I’m using Blynk I have noticed that my analog sensors are returning a 1023 value as soon as my code has run Blynk.Run for the first time. I’ve now seen the symptom with both a Sunfounder Analog Temperature Sensor and PhotoCell Light Sensor. I’ve tried with different analog pins the…

I would like to verify/prove my point that there’s a problem with BlynkSimpleWifi.h by having other people perform the same test. I’ve already done so myself with another Arduino (same issue) and switching from WiFi to Ethernet (problem resolved)… so I believe it’s a specific issue with the BlynkSimpleWifi.h library.

Sketch :

#define BLYNK_DEBUG
#define BLYNK_PRINT Serial
#include <BlynkSimpleWifi.h>
#include <SimpleTimer.h>

char auth[] = "your authentication code";
char ssid[] = "your SID";     // Network SSID (name)
char pass[] = "your password";     // Network password

int sensor_output = 0;

SimpleTimer timer_Sensor;
SimpleTimer timer_Blynk;

void setup()
{
  Serial.begin(9600); 
  Blynk.begin(auth, ssid, pass); 
  timer_Sensor.setInterval(1000L, SensorGet);
  timer_Blynk.setInterval(15000L, BlynkTalk);
}

void SensorGet()
{
  sensor_output = analogRead(A0);
  Serial.print("Analog Sensor: ");
  Serial.println(sensor_output);
}

void BlynkTalk()
{
  Serial.println("Blynk.run() now ");
  Blynk.run();
}

void loop()
{
 timer_Sensor.run();
 timer_Blynk.run();
}

Output:
[0] Connecting to Misseeuw…
[15001] My IP: 192.168.2.7
[15002] Blynk v0.3.1
Analog Sensor: 439
Analog Sensor: 438
Analog Sensor: 434
Analog Sensor: 434
Analog Sensor: 434
Analog Sensor: 435
Analog Sensor: 437
Analog Sensor: 437
Analog Sensor: 438
Analog Sensor: 438
Analog Sensor: 438
Analog Sensor: 436
Analog Sensor: 436
Analog Sensor: 435
Blynk.run() now
[30002] Connecting to cloud.blynk.cc:8442
[31099] <msg 2,1,32
<1a06fbd9fb65460888ec0af956aadb85
�nalog Sensor: 436
�nalog Sensor: 1023
�nalog Sensor: 1023
�nalog Sensor: 1023
�nalog Sensor: 1023
�nalog Sensor: 1023
�nalog Sensor: 1023
…
…