Many of you must have heard about the fingerprint sensor which a nice way to provide security. Here i have given the interfacing of the R30X fingerprint sensor module with ARM LPC2148 board but the basics remain the same for all the micro-controllers. The first thing for interfacing the sensor with the controller is the handshaking, in which the controller first sends a signal or hex codes to the sensor and it acknowledges. After handshaking, only the controller can talk to the sensor. unsigned char Message[16] = {0XEF,0X01,0XFF,0XFF,0XFF,0XFF,0X01,0X00,0X07,0X13,0X00,0X00,0X00,0X00,0X00,0X1B}; This line…
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