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Just received my Tennsy 3.5 and I connected my 5 serial sensors on Uart2 to Uart6. Started the basic Serial to Serial test, as in the example, and I could not read data on Uart 4 - 5 - 6.... After some probing, I realized that RX4-TX4 RX5-TX5 RX6-TX6 pins are inverted on the picture card...