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By AlexanderMason
#87613 Hello, I've experienced a problem with NodeMCU board. I have several esp8266 modules and a NodeMCU which I found more convenient for fast prototyping. I made a simple sketch which creates soft AP, webserver and handles a simple html page with couple of forms. After data is submitted into forms server esp8266 forwards acquired data through rs232 to regular arduino uno.
Its pointless to post code because I've tried many variations and ended up with same results.

Whenever I flash esp8266 module everything works flawlessly. When I upload same sketch into NodeMCU AP goes very glitchy, e.g. it drops connection, wont allow me to connect and whenever I manage to finally connect it sends cropped data to browser. I choose correct board type,. however I tried different boards and settings but nothing helps. I tried to power up it from separate lab PSU = same problems.
Probably there's something needs to be done which Im missing? Or its simply a faulty chip?
Thanks in advance!
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By DIRR70
#87712 Hi Alexander,

It really seems that your NodeMCU is fried. There's no difference for the code between a 'single" ESP8266 and the NodeMCU. In case the code really works on one board, it should work on the other, too. To be entirely sure, you may want to use the code sample for AP with WEB server shipped with arduino (or platformIO, whatever you use). The power supply on the NodeMCU is perfectly fine to serve the board for AP purposes. You can't do very much to change the behaviour, maybe except trying different variants of the lwIP. But if the other board works with your code and board settings, I would definitely test a new NodeMCU...