ESP8266 Community Forum

- Thu Sep 17, 2020 3:34 pm #88815 Hi All,

My ESP9266 D1 mini was working fine until I flashed new code in it.
Now the serial port is not showing up in Arduino IDE (Win10) anymore.
The Builtin_LED flashes once during power up and than stays on.

What I Checked/tried:
Cable/flashing/code is working fine with on other devices
5V & 3.3 are present on pins
Connect D3 (GPIO 0) to GND, to set to flash mode without succes.
Also no port shows up in ESP8266Flasher.exe

Any suggestions on how I can bring the device back to life?

For what it is worth, this is the code I flashed:

Code: Select all#include "AHT10.h"
#include <Wire.h>
AHT10 myAHT10(AHT10_ADDRESS_0X38);

void setup()
{ Serial.begin(115200);
Wire.begin(D5,D6);
if (myAHT10.begin() == true) Serial.println("AHT10 OK"); else Serial.println("AHT10 problem");
}

void loop()
{ String(myAHT10.readTemperature()) + " °C");
Serial.println();
delay(10000);
}

- Fri Sep 18, 2020 11:10 am #88819 Are there any peripherals attached to the data pins of your WeMos D1 Mini?

Assumption is the mother of all f*ckups. At least: that's what I'm assuming.

- Fri Sep 18, 2020 11:38 am #88820 No, everything is removed, only the standalone board.
Thanks for your response!

- Fri Sep 18, 2020 1:59 pm #88822 Thanks for your response.
Everything is disconnected, it I sjust the board.