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By nickesp8266
#34525 Hi,

I have an ESP8266-12E Devkit 1.0 running NodeMCU that I want to trigger to send a HTTP GET request to an external site when something happen. The ESP8266 D6 pin is connected to PIN 13 of Arduino UNO as INTERRUPT, so if any event happens in Arduino UNO it will trigger a HIGH signal to ESP8266 which will indicate to the lua script that it need to send the request.

My question is : Is there a way to wite ESP8266-12E with Arduino UNO so I can communicate with text/string instead of only voltage high/low ? something like SPI or UART ? is this possible to program in Lua ?

Thanks for the help