- Sat Sep 23, 2017 5:21 am
#70244
I have 4 new SONOFF's.
I've had them about a year but just got round to opening them up and flashing custom firmware.
Each sonoff module also has the 433.92MHz radio for a hand held remote.
Other than that they are just the basic module.
I'm having problems loading *any* sketch onto these modules.
I have soldered headers onto the 3v3, RX,TX and GND for each of the modules, so I can be certain that I have as good a connection to the FTDI USB programer as I can get.
I'm using 3.3v not 5v.
I have 3 different FTDI's and have tried each one with most of the modules; no luck.
I have also tried using the serial chip on the Arduino Uno as a programer by connecting Reset to ground on the Arduino and then connecting the 3V3, GND, TX and RX pins to the SONOFF. This didn't work either.
I make sure to ground GPIO0 before connecting 3V3 each time, so that the ESP8266 goes into programing mode.
I've tried switching TX and RX round. Didn't work.
I can always see the FTDI (or Arduino Uno) programmer port in the Adruino IDE under
menu -> Tools -> Port
Settings I am using are "Generic ESP8266" and others as shown in image attachment.
I can't even get the sketch to begin uploading.
Sketch compiles just fine.
Error I see every time, regardless of which SONOFF module I try to program, or settings selected is
Sketch uses 248967 bytes (25%) of program storage space. Maximum is 958448 bytes.
Global variables use 35620 bytes (43%) of dynamic memory, leaving 46300 bytes for local variables. Maximum is 81920 bytes.
warning: espcomm_sync failed
error: espcomm_open failed
error: espcomm_upload_mem failed
error: espcomm_upload_mem failed
Done loads of googling and nothing obvious.
Ideas?
ps I'm able to upload the sketch I'm using onto a stand alone ESP8266-01 with no trouble at all.
I've had them about a year but just got round to opening them up and flashing custom firmware.
Each sonoff module also has the 433.92MHz radio for a hand held remote.
Other than that they are just the basic module.
I'm having problems loading *any* sketch onto these modules.
I have soldered headers onto the 3v3, RX,TX and GND for each of the modules, so I can be certain that I have as good a connection to the FTDI USB programer as I can get.
I'm using 3.3v not 5v.
I have 3 different FTDI's and have tried each one with most of the modules; no luck.
I have also tried using the serial chip on the Arduino Uno as a programer by connecting Reset to ground on the Arduino and then connecting the 3V3, GND, TX and RX pins to the SONOFF. This didn't work either.
I make sure to ground GPIO0 before connecting 3V3 each time, so that the ESP8266 goes into programing mode.
I've tried switching TX and RX round. Didn't work.
I can always see the FTDI (or Arduino Uno) programmer port in the Adruino IDE under
menu -> Tools -> Port
Settings I am using are "Generic ESP8266" and others as shown in image attachment.
I can't even get the sketch to begin uploading.
Sketch compiles just fine.
Error I see every time, regardless of which SONOFF module I try to program, or settings selected is
Sketch uses 248967 bytes (25%) of program storage space. Maximum is 958448 bytes.
Global variables use 35620 bytes (43%) of dynamic memory, leaving 46300 bytes for local variables. Maximum is 81920 bytes.
warning: espcomm_sync failed
error: espcomm_open failed
error: espcomm_upload_mem failed
error: espcomm_upload_mem failed
Done loads of googling and nothing obvious.
Ideas?
ps I'm able to upload the sketch I'm using onto a stand alone ESP8266-01 with no trouble at all.
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