ESP8266 Community Forum

- Thu Jan 15, 2015 10:40 pm #7409 Hi,
I got hold of a couple of ESP8266 recently and I've set up a basic circuit with my Arduino Uno as a serial monitor.
I'm using the code and set up described here: http://allaboutee.com/2014/12/27/esp8266-arduino-code-and-circuit/

The boot up is fine and using NL/CR at 9600baud, AT+GMR responds with:

Code: Select allready
AT+GMR

00100002-AI03

OK


wrong syntax

ERROR


I'm looking to update the firmware, but I'm not sure what pin configuration I need for the Arduino & ESP8266 to use esptool.py
I spent a good few hours last night trying to flash the firmware (on both Mac & Windows computers) however I'm getting a "cannot connect" error message.
I have ensured that no other monitor is using the dev/cu.usbmodem641 port and that GPIO0 is connected to GND.

Any thoughts on how to best update the firmware?

- Fri Jan 16, 2015 4:53 am #7421 You can't upload firmware with arduino. You need standalone USB serial or ftdi. But if you have arduino UNO, you can remove atmega328 on board and you can use arduino boards USB serial adapter.

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- Sat Jan 17, 2015 1:40 am #7486 Thank you alonewolfx2.
I'll get hold of a usb/serial converter