I have to ESP8266EX, one answers OK to AT+CIOBAUD=9600 and the other answers ERROR to the same command.
The dialog with the later (not working) is as follows:
AT version:184.108.40.206(Apr 13 2018 11:10:59)
compile time:Jun 7 2018 19:34:27
Bin version(Wroom 02):1.6.2
The dialog with the former (working) is as folows:
AT version:220.127.116.11(Jul 1 2016 20:04:45)
Ai-Thinker Technology Co. Ltd.
Nov 7 2017 16:43:45
I see that the versions are more recent for the later than for the former, but beyond this I am lost , is anyone having a track to follow ?
thank you for any hint !