I need to send the text data over the serial port using Arduino UART. In my simple project, I would like send a text data over the tx line and then receive the same data on the other end using RX pin.
I was trying to do this using one Arduino Uno board which has one hardware UART. But it seems that this UART is shared with USB. So I can not really use this Hardware uart supported on pins 0 and 1. Due to this limitation, I started looking at using software serial port. For basic testing, I was planning on looping the tx to rx. But I learnt that software serial port can not simulataneously transmit and receive the data.
So at this point it seems that I can not use one Arduinno UNO. At minimum I need two Arduino UNO. Still with this, I have to use it in software serial mode. I can not use it the hardware serial mode as it is shared with USB.
Since I need to purchase second Arduiino, I would like to know which Arduinio, I should purchase. It seems Arduino, Megas has more then one serial port. Will it be better to buy Arduino mega?
Your feedback will be very help please