ESP8266 Community Forum

Hi,
i am trying to flash a ESP12 but its fails every time.

Its connected like shown in http://www.instructables.com/id/Getting ... 66-ESP-12/ Step 3.

I am using different flashing tools for windows but all fail. I tried two FTDI usb -> ser converters.

At the console i get the following text with baudrate 74880:



When i try to flash with esptool.exe is looks like



Any idea? i believe my ESP12 is an defective item

BR

mode

> 3500 views and no answer.
That means i do not make a obvious mistake?!
I ordered a few more ESP to test with...

No, it means that 3,500 people asked about the same before you. By the way, it is a completely foolish idea to connect the input / output pins to ground or Vcc.

> 3500 views and no answer.
That means i do not make a obvious mistake?!

No. It means that I am tired of saying the same thing over and over and am too busy to do it again.

The only pins that should be connected to 3.3v or ground is Vcc on the chip and gnd. All others should use pull up or pull down resistors to achieve the correct level. Max resistor value of 10K.

The power supply is critical for proper operation. It has to be a stable 3.3 volts. Power supply must have the capability to supply 500mA. Do not use long wires. Regulation must be at the module, not a foot away. Bypass capacitors at the module. No long wires.

Just because you found information on the internet does not make it good information. Too many people do not know what they are doing but are able to post information. How you execute the wiring is very important. Having all the connections wired is only part of the solution. How things are wired matters.