Hi,
I need to create a system that logs users who scan keycards on a RC-522 RFID module. The users would be logged on the Arduino, but I then need a way to see who scanned their card, so I thought to add a bluetooth module (HC-05). I've used this bluetooth module in the past to send data from a phone to the arduino, but is the reverse also possible? Note that I don't need live updates, I just need to connect to the HC-05 via app on an Android phone and then request for the data via app and have that data be sent from the HC-05 to the phone.
Thank you.
you can write an app on your android phone to do this. MIT App Inventor makes it not to difficult to get going
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Yes, data can be sent to the smartphone.
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Perfect, thank you both
About any Bluetooth terminal app can be used to do this. You don't need to re-invent the wheel with App Inventor.
That was assuming you want a dedicated UI to get the list and process the returned info in some way (other than copy paste).
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Yeah, I need a simple UI that people can use without trying to figure out Bluetooth terminal apps
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