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Hi Yanny,Thank you for the nice tutorial. I recently purchased two Spyder-UART modules and connected them as instructed. I'm using two MCUs (one MCU is programmed to send data at 9600bps and the other one is programmed to receive data at 9600bps and turn on/off leds based on the data received). The two MCUs when connected directly to each other are able to communicate properly, however, interfacing them with Spyder UART module as instructed does not work. Do I need to set something to get the communication started?ThanksMayank