What's wrong here/ Tried using resistor 10K to pull up the GPIO2 and GPIO0. Same issue.
One blink often means the ESP is in the boot mode where it is expecting a new program to be uploaded. Google for "esp8266 boot mode selection" to see what pins need to be HIGH/LOW to get the ESP into normal/run program mode.
They won't work if you have those 220R and opto-isolators pulling the pins to ground.
Can you re-wire so that the 220R and opto-isolators pull the pins up? Then you don't need the 10K pull-ups. To switch on your triacs, you would make the ESP pins output LOW.
Well, R4 and R5 will dissipate about 0.5W when power is on, so I hope you're using 2W resistors and provide ample space for convection cooling. Regular 0.5W resistors will not be adequate here.
What's with the button connected between tx and Rx? Is anything actually connected there?
ESP are 3.3V devices. If you power them with 5V they won't live long.
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