Hang Blynk app

7

@romanF could you please show us code?

8

Have you enabled KEEP THE SCREEN ON option in project’s settings? If not - could you try with it?

9

Link on this type of sensor http://www.sciencedirect.com/science/article/pii/0924424792801937.
I using Blynk cloud now not the local server. I am send 10 values per 1 second, the sensor measures the oscillation frequency of 5-12 Hz.The Blynk app some minutes shows values well, then graphics element don’t paint new data, it stops and then paints some data and stops.
My code is simple

#define BLYNK_PRINT Serial   
#include <SPI.h>
#include <SimpleTimer.h>
#include <ESP8266_Lib.h>
#include <BlynkSimpleShieldEsp8266.h>
#define ESP8266_BAUD 9600
#define EspSerial Serial1
char auth[] = "78b3236e62704b888aadc5180e265bad";
char ssid[] = "Atmega16F";
char pass[] = "";
ESP8266 wifi(&EspSerial);
SimpleTimer timer;
void myTimerEvent()
{
  Blynk.virtualWrite(V5,(analogRead(A0)));
}
void setup()
{
  analogReference(INTERNAL1V1 );
  Serial.begin(9600); // See the connection status in Serial Monitor
  EspSerial.begin(ESP8266_BAUD);
  Blynk.begin(auth, wifi, ssid, pass);
  // Setup a function to be called every second
  timer.setInterval(100L, myTimerEvent);
}
void loop()
{
  Blynk.run(); // Initiates Blynk
  timer.run(); // Initiates SimpleTimer
}
1 Like
10

@romanF edit your last post so we can read the sketch, use </> button.

11

Yes, I set the option KEEP THE SCREEN ON

12

@romanF maybe this is ESP issue? Could you please add some output on hardware side so we could be sure?

P. S. My Blynk project handles 50 req/sec with no issues.

13

I think ESP work normally and the blue led blinks.

Can you explain what I must do?

I don’t try to use the local server.

14

Well, you have to make some serial output in order to say that for sure.

Me too =)

15

What serial speed chooses for 50 req/sec ? 9600 or higher

16

Do you do your tests with an ESP and WiFi or Arduino and Ethernet?

@romanF

For debugging purposes you can add the following as the first line of your sketch but remove as soon as testing is done.

#define BLYNK_DEBUG

With standalone ESP’s a baud of 115200 is fine but generally not as a shield.
You might need to consider a decent ESP (not 01) without Arduino.
How big is each packet that you receive?

17

Arduino mostly. I have no esp =(.

18

No ESP’s!!!
My Pro’s arrived today :slight_smile:

3 Likes
19

I connect the Blynk app to Arduino using local server, but the problem with the Blynk app remaining. Send 10 values per 1 sec using esp8266 esp-01
This url for video http://files.d-lan.dp.ua/download?file=0612b83aa5a73ae989429b0543035a4e

20

@romanF did you try adding debug on hardware side? Some prints? We need to be 100% it is not your hardware problem.

I was not able to reproduce. Does everything works with another widget, like value display?

21

@romanF ignore my last message. Reproduced. As workaround for now you may use label display, terminal or table widgets.

22

I used the label, it works well, don’t hang. But I need real-time plotting(. I change time and set up 200 ms, but the situation with graph don’t change.

23

@Costas Mini PRO? How are they?

24

@zeeko posted a quick review for you at WeMos D1 Mini Pro

25

@romanF fixed. Please check with latest Blynk app.

26

Thanks but I attempt new version some later because I found another solution.