I've initially gotten myself an Adafruit Feather Huzzah for an IOT project, however, since I really like the ESP I don't want to deploy Feathers and keep buying new ones because they are expensive.
So I bought little ESP12F modules and a CP2104 flasher (the same one is used on the Feather), but I can't get it to flash.
I'm using ArduinoIDE 1.8.1 or esptool 1.2 on Ubuntu 16.04.
I've rebuild the circuit multiple times according to various tutorials and sadly did not picture them, at first I got the generic error message:
warning: espcomm_sync failed
error: espcomm_open failed
error: espcomm_upload_mem failed
error: espcomm_upload_mem failed
And the Receive LED of the CP2104 wasn't flashing, but I've gotten a step further today and the ESP answers (Receive LED flashing now).
But the answer seems wrong:
warning: espcomm_send_command: wrong direction/command: 0x00 0x08, expected 0x01 0x08
warning: espcomm_send_command: wrong direction/command: 0x00 0x08, expected 0x01 0x08
warning: espcomm_send_command: wrong direction/command: 0x00 0x08, expected 0x01 0x08
warning: espcomm_send_command: wrong direction/command: 0x00 0x08, expected 0x01 0x08
warning: espcomm_send_command: wrong direction/command: 0x00 0x08, expected 0x01 0x08
warning: espcomm_send_command: wrong direction/command: 0x00 0x08, expected 0x01 0x08
warning: espcomm_send_command: wrong direction/command: 0x00 0x08, expected 0x01 0x08
warning: espcomm_send_command: wrong direction/command: 0x00 0x08, expected 0x01 0x08
warning: espcomm_send_command: wrong direction/command: 0x00 0x08, expected 0x01 0x08
warning: espcomm_sync failed
error: espcomm_open failed
error: espcomm_upload_mem failed
error: espcomm_upload_mem failed
Or on esptool (visually the same flashing):
A fatal error occurred: Failed to connect to ESP8266
Now on this issue I couldn't find (useful) help on google anymore and I'm desperate....
Do I still have a wrong connection?
GND - GND (If i connect the CP2104s GND to GND as well I don't receive feedback anymore)
GPIO15 - GND
GPIO0 - GND
TXD0 - RXD of the CP2104
RXD0 - TXD of the CP2104
RST - GND (according to this topic)
EN - 3.3V
VCC - 3.3V
Thanks in advance for your input!
Greetings
Kunterbunt