ESP8266 Community Forum

- Mon Jul 04, 2016 10:11 am #50167 Hi, guys
I have a problem with my D1 mini i bought it from aliexpres. When is connected to PC over USB cable its not shown in Arduino IDE or ESPlorer. If i open "devices and printers" i can see its as "unknown device", but my all Arduinos are detected and i can use them normally.

I tried on windows 7 and i get same results, and i install chg340 drivers for device multiple times. I tried ubuntu too but is nothing showed when i type "lsusb" but if i connect my Arduino is shown. And another strange thing is that when i connect this D1 mini to USB it create Aacces Point (AI_THINKER-somenumbers) on which i can connect but when i go to IP like 192.168.4.1/edit, /settings...i just get error that device refused my connection. I browse almost entire internet and tried everything but no results...i bought this board too but like with D1 mini i cant connect to it and i cannot flash it or do anything with it (this board create AP too)..im out of ideas.
Best regards benny

- Mon Jul 04, 2016 11:57 am #50173 I have win10 pro and have had no problem with the Arduino IDE 1.6.9 stable 2.3 esp8266 on a Wemos D1 . To flash the esp8266 make sure you have installed the board Wemos D1 r2 & mini chosen the correct port (ex com9) and picked a baud rate ex 921600. There are really good instructions on the github for esp8266 arduino. Wemos is just another board so it should work fine as it did for me. The esp8266 is serial ( rs232 ) programmable. The ch340 is a usb to rs232 interface making it more of a com device to a pc than an ordinary usb device.

- Mon Jul 04, 2016 12:58 pm #50181 hey, thanks for quick reply
In my case is problem that arduino IDE doesnt detect COM port of wemos or nodemcu device in this case D1 mini. I can only see device in my "printers and devices" but its not recognized like u can see on image which i posted. So i cant even start flashing or programing because computer doesn't detect COM port of D1 mini.

- Tue Jul 05, 2016 8:38 am #50238 Hard to say what it might be. Is there a caution flag in device manager for the ch340 after it is plugged in? When plugging in the wemos d1 the PC should automatically install the device or show an error as to why it didn't.