I just finish the board base on opensprinkler hardware on github. I run into an issue that the esp8266 not bootup. Every time power on the blue led one flash and nothing happen. I flash and test the esp8266 before solder to the board. I had 3.3vdc on Reset pin, 3.3vdc CH_PD, 3.3vdc GPIO16,0 vdc GPIO15 and 3.3vdc GPIO0. Can some one help me out or let me what is the issue it will great help? Thanks.