![]() You don't write the string to the display anymore but you wait for characters from the Serial Monitor. ![]() The below code works well but no display of data in TFT screen even I have checked with constant values to be displayed: #define _AVR_ Why do you think that the Display uses TX0 and RX0? I cannot find a link to the hardware in that post. Please find the details in link - Arduino Mega 2560 And 2.8 ITDB02 Shield - Displays - Arduino Forum Well in all other words "How can I use 3 different Serial I/Os individually at same time without disturbing any other I/O?" I found that ITEAD shield is sending or rather using RX0/TX0 pins very frequently - some data is going thru. The value is incorrect I am pretty sure, what wrong am I doing? Serial Monitor Output- non printable junk character. Now while running the below program I am getting junk output both in my TFT display as well as serila monitor: #define _AVR_ Though I have not written the code for GSM modem. Note the ITEAD TFT shield consumes TX0, RX0 pins - so I cannot make use of RX0 and TX0 pins. Note I am supplying 12 V to RFID via a adapter. I have connected the TX,GND of RFID reader to RX3 pin 15 / GND (pin) of Arduino. The board contains 54 digital input/output pins, 16 analog inputs, 4 UARTs (hardware serial ports), a USB connection, a power jack, an ICSP header, and a reset button. The RFID reader has RS-232 port as well as GND,TX and 5V pins. If the upload still fails, or if no new port appeared after you plugged the Arduino board into your computer, add a reply here to let us know and we'll investigate the problem further.Something like same above along with ITEAD TFT shield & GSM Modem. Select that port from the menu and try uploading again. If a new port is listed in the menu, that is the port of your Arduino board.
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