Can i ask something ?
I got a Card-Reader Module (Mini 125khz RFID Module- External) - SKU113990043
so I wanna get a manual and some document of the Protocol about this model.
pls send me them.
and I have some problem when I was testing this model.
- There was no problem receiving data using the Arduino.
but I almost received a data that only “Null” when I was testing without the Arduino.
and then I could receive the right data once in a while.
What is the problem? any diffrence?
- If I compile SeeedRFID.H Codes on Arduino(included a Photo),
how does it affect to RFID Module ?
I didn’t understand this codes so pls explain the impacts of the RFID Module.