Moderator: igrr
They were caused by the Arduino upload not clearing all flash memory on the ESP.
I could always solve the problems by flashing the file blank512k.bin to the ESP. After this uploading an Arduino sketch was OK again.
Maybe this helps.
make sure you select the good card AND the program loader AND the good com port
What are the pro's using lua over normal arduino code? Faster?
(I would like to send data to website very fast , maybe you can refer me to a sample?)