Hi, (This is going to be a long post)
I have wemosD1 mini running blynk example (a bit edited) terminal sketch, and i am experiencing some strange behaviours on it. For example:
I have on pin D5 LED strip via transistor.
On the phone i control pin D5 with slider.
Now, everythhing works fine, until i do this:
- Boot up WeMos
- connect to server
- slide slider to any higher value
- play with it little bit // or not, because up to this point everything behaves normal.
- Then, when i set slider all the way to zero value - led goes completly off - ok
- NOW - IF i set slider to any higher value, everything behaves ok, BUT IF i set slider only little bit higher say to value 10 within 0-1023 range, WeMos get frozen, and after couple of seconds reboot-self.
or another one (latest):
i have on the same wemos onnected RGB LED, and using widget zeRGBa in app. now, if i am changing color slowly - one at a time - not too fast switching between colors, everything is ok, but when i am changing colors faster (or have “send on release >off” - 100ms and pulling between colors) wemos freezes for under a second, and then reconects to server - in serial monitor is:
[19420] <[14|1E]b[00|07]dw[00]16[00]0
[22151] Cmd error
[22151] Connecting to 80.211.207.110
[22170] <[02|00|01|00] ac355a6476e44a059a4828663a47f7c6
[22196] >[00|00|01|00|C8]
[22196] Ready (ping: 8ms).
[22196] Free RAM: 41640
[22197] >[14|00|01|00]5
[22197] >pm[00]5[00]out[00]13[00]out[00]16[00]in[00]17[00]in[00]4[00]in[00]15[00]out[00]12[00]out[00]14[00]out
[22263] <[11|00|02|00]Hver[00]0.5.2[00]h-beat[00]10[00]buff-in[00]1024[00]dev[00]Arduino[00]build[00]May 7 2018 08:04:03[00]
[22286] >[00|00|02|00|C8]
[25351] >[14|1E]b[00|05]
[25351] >dr[00]16
yup, it is that “cmd error” ( i do not have log from serial mon in dimming LED strip case, because, as i reflashed wemos with code with “#define BLYNK_DEBUG” line, the issue magically dissapeared, and did not come back untill now)
Also another thing besides less blynk related, i have “ArduinoOTA.h” library in code, and when uploading code to wemos some pins is turning on and off pretty fast - maybe 4 times per second (every 250 ms). By the way, few days ago, when i finally get working OTA for the first time, when i was very first time uploading my code via OTA, it was about 1:00 AM and LED strip above me (wich i trying to control via that wemos) started switching between full brightness and zero brightness (off) every 250ms and it was a bit spooky and i was like: "Oh, someone does not like, that i get it to work after that few hours or whatever 
", interestingly, that pins wich is switching during OTA is some time the same, and then - IDK how and why… - it is doing another pins, and that what is was doing before is now simply at low//0
so… yes that is the whole problem. Also i remember, that similar things happened on arduino uno (i do not have more of that boards at this time).
I almost forget - the code:
#define BLYNK_PRINT Serial
#define BLYNK_DEBUG
#include <ESP8266WiFi.h>
#include <ESP8266mDNS.h>
#include <WiFiUdp.h>
#include <ArduinoOTA.h>
#include <BlynkSimpleEsp8266.h>
// You should get Auth Token in the Blynk App.
// Go to the Project Settings (nut icon).
char auth[] = "trust me, this is valid and working.";
// Your WiFi credentials.
// Set password to "" for open networks.
char ssid[] = "does this really matter?";
char pass[] = "i do not think so...";
const char* ssidota = "also nothing";
const char* password = "to see";
// Attach virtual serial terminal to Virtual Pin V1
WidgetTerminal terminal(V1);
// You can send commands from Terminal to your hardware. Just use
// the same Virtual Pin as your Terminal Widget
BLYNK_WRITE(V1)
{
if (String("restart") == param.asStr()) {
terminal.println("Command for reboot receieved.") ;
terminal.println("issuing restart!") ;
terminal.flush();
ESP.restart();
}
if (String("reset") == param.asStr()) {
terminal.println("Command for reboot receieved.") ;
terminal.println("issuing reset!") ;
terminal.flush();
ESP.reset();
} else {
terminal.print("write restart to restart");
terminal.print("write reset to reset");
terminal.println();
}
// Ensure everything is sent
terminal.flush();
}
void setup()
{
// Debug console
Serial.begin(74880);
WiFi.mode(WIFI_STA);
WiFi.begin(ssidota, password);
while (WiFi.waitForConnectResult() != WL_CONNECTED) {
Serial.println("Connection Failed! Rebooting...");
delay(5000);
ESP.restart();
}
ArduinoOTA.onStart([]() {
Serial.println("Start");
terminal.println("OTA Start");
terminal.flush();
});
ArduinoOTA.onEnd([]() {
Serial.println("End");
terminal.println("OTA End");
terminal.flush();
});
ArduinoOTA.setHostname("WeMos Blynk LED");
ArduinoOTA.onProgress([](unsigned int progress, unsigned int total) {
Serial.printf("Progress: %u%%\n", (progress / (total / 100)));
terminal.println("Progress: %u%%\n");
terminal.flush();
});
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();
Blynk.begin(auth, ssid, pass, IPAddress(this os ok too), 8080);
terminal.println(F(" "));
terminal.println(F("Blynk v" BLYNK_VERSION ": Device started"));
terminal.println(F("-------------"));
terminal.println(F("WeMos D1 mini controlling LED strip"));
terminal.println(F("write restart to restart"));
terminal.println(F("write reset to reset"));
terminal.flush();
}
void loop()
{
Blynk.run();
ArduinoOTA.handle();
}