Open the serial monitor change the boud rate to 115200 and coose NL and CR (new line and carrage return).Type AT on the serial monitor you will see an OK response. Once WiFi is enabled I lose chars from the input stream. The code to read the port works just fine if WiFi is not enabled. I'm trying to use an ESP8266 (Wemos D1 mini) to read from a 19.2K serial port and report the results over WiFi.
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Install the same controller on residential and light commercial sites - the more stations you add, the more you save, providing you and your customers with more value for the money.
At present, users must set up a toolchain in the development environment before starting software development.
Exists more expensive FT232RL or FT232 module, but a CH340G or CH340. To connect, naturally, you must use a USB to TTL converter, you can find it at 1$. This pins can be used at to transmit core debug information or like a classic serial named Serial2. With the help of this library we can allow multiple serial port on arduino.