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8051 SM630 fingerprint Module is not responding

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satishnigude

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Hi,

I am using SM630 Module and I have made circuit diagram as shown. I am receiving any data if I send any command. Do I need to use 10k pullup at Tx pin? I am using 57600 bps baud rate and 89c51 microcontroller. Please reply

---------- Post added at 11:49 ---------- Previous post was at 11:48 ----------

not receiving any response form SM 630
 

do you use this to configure the module... you need ull up 10k resistor for every port pin.. check the cable.. connect to pc and test it once....

how are you generating 57600 baud rate in 89c51????????????

if the baud rate is not same then controller will not receive anything

---------- Post added at 13:10 ---------- Previous post was at 13:09 ----------

https://www.robokits.co.in/datasheets/SM-630.pdf
 
89c51 baud rate generation; PCON = 0x80;
TH1 = 0xFF;
 

i am sending
code unsigned char SEARCHLOC[11] = {0x4D,0x58,0x10,0x05,0x44,0x00,0x00,0x00,0xFE,0xFC};

to search the entry from 0x0000 to 0x00FE locations.
 

do you have GUI to test the module alone.... if yes then test it and use a serial port analyser to see the commands passed for every operation and create a look up table..
 

Can I connect RX and Tx of SM630 to computers Tx and Rx pins DIRECTLY wihtout MAX232?
 

Yes you can connect as you said to mcu and for pc you need max 232 /233 level converters
 
Last edited:

Thanks all. Its working properly now. I have connected the SM630 to 8051 microcontroller with baudrate 57600 bps.
 

I have some problems like U;
I want drive it with atmega16 ; but I dont recive any data;I used 8data; 1stop; no parity;
UCSRA=0x00;UCSRB=0x18;UCSRC=0x86;UBRRH=0x00;UBRRL=0x0B;
I see the data that avr send ; in pc; but sm630 doesnt reply ;
please help me :(
 

satishnigude said:
Hi,

I am using SM630 Module and I have made circuit diagram as shown. I am receiving any data if I send any command. Do I need to use 10k pullup at Tx pin? I am using 57600 bps baud rate and 89c51 microcontroller. Please reply

---------- Post added at 11:49 ---------- Previous post was at 11:48 ----------

not receiving any response form SM 630
Click to expand...


PLEASE PLEASE send me the code you used! smcc1755 AT gmail DOT com

Did you use any external crystal?
 

hi
the pull up resister doesnt so important ; but the most important thing is external crystal and value of it; Your external crystal must be 11.0595MHz
 

workinh on sm630

If I add any fingerprint then how can I differentiate ack for different finger
 

have you completed your project ....
can u plz help regarding fingerprint based security system...
how to interface
 

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