[Pete] was building a hot tub controller, using a WEMOS board based on the venerable ESP8266. After assembly, the board was plugged into USB and [Pete] hit the flash button. No dice. Investigation … ...

Use a couple of ESP8266 GPIO to control and load the 74HC595. Report comment. Reply. birdmun says: May 31, 2015 at 10:20 am You are half right.