I need something to display data from two ports in one window. But what about software? Of course, I can use two serial terminals at the same time, but then I can’t see the correlation between both streams. With help of one resistor, I can use the same serial port of Arduino Pro Mini to program it from PC and communicate (with spying) with ESP8266. To have more flexibility, I made special cable with switch to change modes between spy (two receivers) and communication (Rx and Tx connected to one converter). The hardware is simple too - I connected both serial lines to Rx pins of two serial-USB converters. I want to the spy serial communication at both lines at the same time. It’s a serial terminal, but not the classic one - it connects to two serial ports at the same time. I’d like to share a little tool that I made while debugging communication between Arduino and ESP8266.
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