ESP8266-01 locks up power-up when GPIO-2 connected 2 relay

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Re: ESP8266-01 locks up power-up when GPIO-2 connected 2 rel

By Sum~guy
- Mon Apr 29, 2019 8:10 pm #82077 I managed to connect I/O 4 in place of I/O 2 on the 8-pin header. But then I discovered that the LED on my board (I have just 1 blue LED) for WIFI connection must be controlled by I/O 4. When I make I/0 4 low, the led comes on, but it goes out when I make I/O 4 high. During power-up, the voltage on I/O 4 is about .9 to 1.0 volts. I might move this to I/O 5 now.
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