- Sat Feb 23, 2019 8:35 pm
#80771
Hi to all, i'm using the esp-01 black module. Im trying to use the tx pin as gpio output (connected to external board). To do this I've remove the blue led and the resistor of the module. My problem begin when I try to connect the tx pin (gpio 1) to the external board because the esp-01 module stop working. I dont have this problem using the Rx pin (used as gpio and connected to external board as well).
I searched for an schematic of this black module (referenced as esp8266-01s) but cant find one to able to check the connection between the blue led and the esp8266.
The tx pin is connected to a NPN transistor base through 1k resistor. The Rx pin has the same connections and has not problem. Why the tx?
Regards
Gaston
I searched for an schematic of this black module (referenced as esp8266-01s) but cant find one to able to check the connection between the blue led and the esp8266.
The tx pin is connected to a NPN transistor base through 1k resistor. The Rx pin has the same connections and has not problem. Why the tx?
Regards
Gaston
