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If you have nice usb-to-serial you can use this guide: to setup automated programming. Are you sure you are entering the programming mode? If it doesn’t output AT commands anymore it could be broken.I always order a couple ESP’s because one out of ten seems to be not ok. The above guide is basically the only one I use by the way, it’s really good. The espcomsync failed is definitly not a coding issue. It is 99% sure something with your hardware.Have you tried another ESP since all other functions like Arduino and USB to serial seem to work fine?
Blink LED with NodeMCU. Description: Node-MCU is an open source IoT platform. It includes firmware which runs on the ESP8266 WiFi -SoC from Express if, and hardware which is based on the ESP-12 module. The term “Node-MCU” by default refers to the firmware rather than the dev kits. The firmware ESP8266 uses the c/c/Lua scripting language.
![Nodemcu amica flash button Nodemcu amica flash button](/uploads/1/2/4/1/124163297/539982423.jpg)
I have never actually had an esp12 fail on me yet, and have about 30 units here and there. I always start by putting surface mount pullups and a pulldown on the back.10 or 12K pullups on Reset, En, 00, and a pulldown on 15.(required). Some already have these in place but I just do it for peace of mind. A 0.1 cap between vcc and gnd.I stick with Arduino 1.6.5 because it works, and does not give my any issues, unlike updates. Maybe a bit anal, but I get fed up trying to sort other issues rather than the stuff I am working on.I use manual switches for reset and programming, so I know the esp is in prog mode before any write attempts are made.The AT command type output will not appear after re flashing, only a stream of gibberish due to the lower baud rate.I’ve had failed attempts at the point of opening the port, but usually because the port has got locked at some point. I just close the serial monitor, and unplug the FDTI usb. Plug back in and upload.Flashing is at 115K, so maybe best to double check that the port is set for that.What do you see on the serial monitor when you do a reset?
(not in prog mode). Output will be at around 76K from memory, (76800?) on some modules 9600 on others. That might let you know if it’s dead or still alive.Maybe something in the above that helps?