ESP-12F-DAT

https://docs.ai-thinker.com/_media/esp8266/docs/esp-12f_product_specification_en.pdf

https://www.elecrow.com/download/ESP-12F.pdf

left right func
RST external pull-up, with cap TXD    
ADC   RXD    
EN external pull-up IO5    
IO16   IO4    
IO14   IO0 external pull-up mode select
IO12   IO2 external pull-up  
IO13   IO15 external pull-down  
VCC   GND    
  • on module LED IO2: low to on