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RFID RS232 to PIC18
Posted:
Tue Apr 03, 2012 7:17 pmby neohimura
Hi, Since this RFID reader is using RS232, do i need a MAX232 chip to communicate with a microprocessor (PIC18F4550)? I saw your example project connection (PR8-B) but i was wondering if i can substitute it with MAX232. Thanx
Re: RFID RS232 to PIC18
Posted:
Tue Apr 03, 2012 9:29 pmby shahrul
You can add MAX232 between PIC and RFID Reader. Ex here,
RFID Reader.
Schematic on Cytron use different method, since because PIC never send signal to the RFID Reader.
Re: RFID RS232 to PIC18
Posted:
Wed Apr 04, 2012 1:47 pmby neohimura
Alright. Thanx Shahrul.
Re: RFID RS232 to PIC18
Posted:
Sun Apr 22, 2012 10:17 pmby yasotha padmanathan
hi, im wondering like how if i dint cut the rs232 part from the wire and would like to connect to PIC. can i do it? or still i muz cut like how cytron have done it?
Re: RFID RS232 to PIC18
Posted:
Sun Apr 22, 2012 11:01 pmby Idris
Hi yasotha padmanathan,
You can connect to PIC without cutting the wire, but you need the
DB9 connector.
Re: RFID RS232 to PIC18
Posted:
Mon Apr 23, 2012 12:12 pmby yasotha padmanathan
ok i tried connecting with db9 male connector. but still no output. Let me tell u how i connect it. from db9 male i connect pin 2 and pin 5 using the ribbon wire to the board. RX pin i didnt connect since im not transmitting anythn back to the reader. is it pin 5 still needed since the usb already has the grnd...
Re: RFID RS232 to PIC18
Posted:
Wed Apr 25, 2012 10:30 amby Idris
Do you connect with MAX232 chip?