Hello Forum I am currently working on a project where I have to send out a SMS when a specific RFID tag is scanned. I have my ID-20LA and my SIM900 shield hooked up to my Arduino Uno, and both of them working fine on their own. Both the RFID reader and the GSM shield communicates with my Uno via th…

How to: get ID-20LA RFID and SIM900 to communicate with UNO (software serials)

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