ESP8266 Community Forum

- Thu Aug 20, 2015 6:43 am #26556 Hi there,

I connected the esp8266 module to the computer via usb to rs232 cable.
I also gave a supply of 3.3V and connected the chip with the right connections (tx --> rx, rx---> tx, gnd --> gnd, vcc & gpio0 -->vcc)
I tried to send AT commands through putty (at 9600 baud rate) but I see a blank screen (I cant communicate with it).
I see red and blue led turning on constantly. What can be the problem ? the wiring is OK (checked it 10000 times)

thanks

- Thu Sep 03, 2015 8:26 am #27711 Hi,
I have similar problem with my ESP-01. However I could flash new firmware - so it works, but after flashing I can't get Ready for AT commands.
I have tried several baud variations, 2 stop bits, CR/LS combinations.
Any glue?

- Fri Sep 04, 2015 10:22 am #27811 Maybe you should flash an AT firmware first. Take note that the connection when flashing and in working connection is different.