ESP8266 Community Forum

Hi to all, im trying to use the tx pin as gpio output. To do this I've removed the blue led and resistor of the module. The problem is when I try to connect this pin to an external board in wich case the esp01 module stop working. I have this pin connected to the base of an NPN transistor through a 1k resistor. Im also using the rx pin as gpio output and has the same connections and has not problems.
Gaston
PS1: Move this post to the correct forum