ESP-12E WeMos D1 UNO R3 CH340

Using Arduino Microcontrollers
1

Hai
I'm a new user. I bough a Wemos clone. On the Wemos I got the led on the board blinking and also I could read the status of a pin changing it with a button.
So it seems all is working well.
But I will not succeed in getting a pin high.
I use the following simple code:

// put your setup code here, to run once:
void setup() {
pinMode(11, OUTPUT);
}
// put your main code here, to run repeatedly:
void loop() {
digitalWrite(11, HIGH);
delay(1000);

digitalWrite(11,LOW);
delay(1000);
}
Nothing happens and measering the pin is constant 0 V.
Does someone know what is going wrong here?
Thanks
Ptrzet

2

there are many Wemos clones can you send us a link to the actual board?
which physical pin did you connect too ?
pin 11 is GPIO11 which on my NodeMCU ESP-12E is connected to SC
when you upload code use code tags </>
as GPIO11 is one of the SPI pins I suggest you use a different pin, e.g. try GPIO16 which is D0

3

I saw about the code tags but did not understand how to do
Here is the link:
ESP 12E Wemos D1 Uno R3 CH340 CH340G Wifi Development Board Gebaseerd ESP8266 Shield Smart Elektronische Pcb Voor Arduino Compatibel Ide|shield for arduino|shield esp8266shield uno - AliExpress

4

using a WeMos D1 R1 UNO compatible board and in the IDE selecting board LOLIN (WeMos) D1 R1 this blinks pin D11/MISI

// WeMos D1 R1 board blinking D11 GPIO13  

#define pin D11  // is GPIO 13

void setup() {
  Serial.begin(115200);
  delay(500);
  Serial.println();
  Serial.print("WeMos D1 R1 blink pin D11 = GPIO");
  Serial.println(pin);
  pinMode(pin, OUTPUT);
}
// put your main code here, to run repeatedly:
void loop() {
  Serial.print("*");
  digitalWrite(pin, HIGH);
  delay(1000);
  digitalWrite(pin,LOW);
   delay(1000);
}

for pin details see wemos-d1-esp8266-based-board

5

Hai Horace
During compiling there was a short message I had to update some files.
I searched were to update but did not find.
The third compiling Iwas in time and: the 8266 file with Wemos wanted to update!
After that all was working fine.

By the way: can you tell me how I can update manually?
Thanks for all your help.

6

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