Forum Replies Created
December 20, 2012 at 12:03 pm in reply to: Finger print scanner and using it to lock and unlock PC #8860
Which fingerprint scanner are you using. First study its mannual. Its very easy.December 20, 2012 at 11:46 am in reply to: GSM SIM 900 module #8859
Good . Congrats… You are on right track…
Your problem solved or not.December 18, 2012 at 9:59 am in reply to: how to connect the PIC16F877A to biometrics finger print scanner #8851
Firstly study the Fingerprint scanner mannual. Try to figer out how it will communicate with PIC16FxxxA or PIC18Fxxx.December 18, 2012 at 9:53 am in reply to: help interfacing two lm35 pic16f877a and lcd #8850
Use TRIS registor for direction. Not PORTD.
Firstly isolate both circuits i mean analog and Microconreoller and check the output of 741 . is it going high and low on the basis of your sensor. if not then check your circuit. or if yes then
Which pic microcontroller you are using. Are you using anlog pins for input. if yes then make them D/I .
Put pull up resistance on that pin.
HemrajDecember 18, 2012 at 9:35 am in reply to: fingerprint based attendance system #8848
If you provide some link or picture then i can help you. But it will be nice if you try it yourself and then if some problem come then share it on forum so some one help you. Try to represent your problem in graphical manner.December 18, 2012 at 9:24 am in reply to: glcd interfacing #8847
pratiik, Most probababaly you have done some hardware mistake. Bcoz i checked code and used code from here. You can refer datasheet of graphical LCD and Connect variable resistance at VEE pin.December 18, 2012 at 9:15 am in reply to: Wireless data trasmision. #8846
Aneesh, can you tell in which format you are getting signals from sensor. I mean it is in voltage or PWM or Serial data. Then i can help you.December 18, 2012 at 9:04 am in reply to: Sending message from AVR atmega32 using sim900D #8845
If your code is not working then you can do one modification in function:
void gsm_cmd(char *cmd)