- Sat Oct 28, 2017 3:58 am
#71296
Phil, thanks for your suggestions! Much appreciated!
I have been working on this for last few hours. I ripped out the ESP-12 from my circuit and all the 1.5 in / 5cm connecting cables and replaced them with a ESP-12 prototyping board http://hobbycomponents.com/esp8266/838-prototyping-adapter-for-esp-07-esp-08-esp-12 that thankfully fit on my existing stripboard. Soldered on a previously used ESP-12F (unfortunately building up a collection of unsuccessfully used ESP-12F...). *** This did get rid of the clock signal on GPIO0. ***
So, I had shortened the connections from stripboard to ESP by using the prototype board and I had changed the ESP-12F module and with that, got rid of the clock signal.
But, despite all the correct voltages and no clock, the ESP-12F was not receiving program when uploading. So I suspected that I had used a bricked / fried ESP-12F. So I tried unsoldering the ESP-12 from the prototyping board, but ruined the tracks on the prototyping board....
So then I removed the prototyping board and replaced it with a 2nd prototyping board and a new ESP-12F.
Power on, follow the procedure for getting into program mode, and... clock signal is back.
I have spent a few months trying to get these modules to work reliably and I'm now searching for alternative modules because they just seem too delicate to use in practice. But I will keep this thread open and will keep my circuit and will gladly test any suggestions to fix this issue.
philbowles wrote:
Unfortunately, me too. First to admit my code/electronics skills ratio is 85/15 . There do seem to be a lot of folk out there who have a similar issue, even to the point of stating the 26MHz is "normal" or "default output mode" for that pin, but I don't really understand what that means.
To me, if it were "normal" you upload would start flashing...got to be another (probably a slap-the-head doh!) answer somewhere. I'll be fascinated when you find it. Do let us all know.
Phil, thanks for your suggestions! Much appreciated!
I have been working on this for last few hours. I ripped out the ESP-12 from my circuit and all the 1.5 in / 5cm connecting cables and replaced them with a ESP-12 prototyping board http://hobbycomponents.com/esp8266/838-prototyping-adapter-for-esp-07-esp-08-esp-12 that thankfully fit on my existing stripboard. Soldered on a previously used ESP-12F (unfortunately building up a collection of unsuccessfully used ESP-12F...). *** This did get rid of the clock signal on GPIO0. ***
So, I had shortened the connections from stripboard to ESP by using the prototype board and I had changed the ESP-12F module and with that, got rid of the clock signal.
But, despite all the correct voltages and no clock, the ESP-12F was not receiving program when uploading. So I suspected that I had used a bricked / fried ESP-12F. So I tried unsoldering the ESP-12 from the prototyping board, but ruined the tracks on the prototyping board....
So then I removed the prototyping board and replaced it with a 2nd prototyping board and a new ESP-12F.Power on, follow the procedure for getting into program mode, and... clock signal is back.
I have spent a few months trying to get these modules to work reliably and I'm now searching for alternative modules because they just seem too delicate to use in practice. But I will keep this thread open and will keep my circuit and will gladly test any suggestions to fix this issue.
