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UART Fingerprint Sensor (C)       
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UART Fingerprint Sensor (C) 
User Manual 
 
CONTENT 
Overview .............................................................................................................................................. 2 
Features ........................................................................................................................................ 2 
Specification ................................................................................................................................. 2 
Hardware ............................................................................................................................................. 4 
Dimension..................................................................................................................................... 4 
Interface ....................................................................................................................................... 4 
Commands ........................................................................................................................................... 5 
Commands format ........................................................................................................................ 5 
Commands Types: ......................................................................................................................... 6 
Communication process .............................................................................................................. 13 
Add fingerprint .................................................................................................................... 13 
Delete user .......................................................................................................................... 14 
Delete all users .................................................................................................................... 14 
Acquire image and upload eigenvalue ................................................................................. 15 
User guides ......................................................................................................................................... 16 
Connect to PC ............................................................................................................................. 16 
Hardware connection .......................................................................................................... 16 
Testing ................................................................................................................................ 17 
Connect to XNUCLEO-F103RB ..................................................................................................... 18 
Connect to Raspberry Pi .............................................................................................................. 18 
 
   

Summary of content (18 pages)

PAGE 1
UART Fingerprint Sensor (C) UART Fingerprint Sensor (C) User Manual CONTENT Overview .............................................................................................................................................. 2 Features ........................................................................................................................................ 2 Specification .......................................................................................................................
PAGE 2
UART Fingerprint Sensor (C) OVERVIEW This is a highly integrated round-shaped all-in-one capacitive fingerprint sensor module, which is nearly as small as a nail plate. The module is controlled via UART commands, easy to use. Its advantages includes 360° omni-directional verification, fast verification, high stability, and low power consumption, etc.
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UART Fingerprint Sensor (C) ⚫ Baudrate: 19200 bps ⚫ Operating environment: ⚫ ⚫ V1.0 ◼ Temperature: -20°C~70°C ◼ Humidity: 40%RH~85%RH (no condensation) Storage environment: ◼ Temperature: -40°C~85°C ◼ Humidity: <85%RH (no condensation) Life: 1 million times www.waveshare.
PAGE 4
UART Fingerprint Sensor (C) HARDWARE DIMENSION INTERFACE Note: The color of actual wires may be different with the image. According to the PIN when connecting but not the color. ⚫ VIN: 3.3V ⚫ GND: Ground ⚫ RX: Serial data input (TTL) ⚫ TX: Serial data output (TTL) ⚫ RST: Power enable/disable Pin ⚫ ◼ HIGH: Power enable ◼ LOW: Power disable (Sleep Mode) WAKE: Wake up pin. When module is in sleep mode, WKAE pin is HIGH when touch sensor with finger. V1.0 www.waveshare.
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UART Fingerprint Sensor (C) COMMANDS COMMANDS FORMAT This module works as slaver device, and you should control Master device to send commands to control it. Communicating interface is UART: 19200 8N1.
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UART Fingerprint Sensor (C) Len: numbers of Data bytes CHK: Checksum, it is XOR result of bytes from Byte 2 to Byte Len+1 data packet following data head. COMMAND TYPES: 1. Modify SN number of module（CMD/ACK both 8 Byte） Byte 1 2 3 CMD 0xF5 0x08 ACK 0xF5 0x08 4 5 New SN New SN New (Bit 23-16) (Bit 15-8) SN(Bit 7-0) old SN old SN old SN (Bit 23-16) (Bit 15-8) (Bit 7-0) 6 7 8 0 CHK 0xF5 0 CHK 0xF5 Notes: SN numbers is 24 bits constant. 2. 3. 4.
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UART Fingerprint Sensor (C) ACK_FULL ACK_USER_OCCUPIED ACK_FINGER_OCCUPIED ACK_TIMEOUT Notes： User ID: 1~0xFFF; User Permission: 1,2,3，(you can define the permission yourself) b) Second Byte 1 2 CMD 0xF5 0x02 3 4 5 User ID User ID Permission (High 8Bit ) (Low 8Bit ) （1/2/3） 6 7 8 0 CHK 0xF5 0 CHK 0xF5 6 7 8 0 CHK 0xF5 0 CHK 0xF5 ACK_SUCCESS ACK 0xF5 0x02 0 0 ACK_FAIL ACK_TIMEOUT c) third Byte 1 2 CMD 0xF5 0x03 3 4 5 User ID User ID Permission (High 8Bit
PAGE 8
UART Fingerprint Sensor (C) Notes： Length of Eigenvalues(Len-) is 193Byte Data packet is sent when fifth byte of ACK data is ACK_SUCCESS 7. Delete user（CMD/ACK both 8 Byte） Byte 1 2 3 4 User ID CMD 0xF5 0x04 User ID (High (Low 8Bit ) 8Bit ) ACK 8.
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UART Fingerprint Sensor (C) Byte 1 2 3 4 CMD 0xF5 0x0A ID(High User 8Bit ) User ID(Low8Bit ) 5 6 7 8 0 0 CHK 0xF5 0 CHK 0xF5 6 7 8 0 CHK 0xF5 0 CHK 0xF5 Permission ACK 0xF5 0x0A 0 0 (1/2/3) ACK_NOUSER 13.
PAGE 10
UART Fingerprint Sensor (C) Byte 1 2 3 4 5 ACK 0xF5 0x23 Hi(Len) Low(Len) 6 7 8 0 CHK 0xF5 ACK_SUCCUSS ACK_FAIL ACK_TIMEOUT 2）Data packet Byte 1 2 3 4 5---Len+1 Len+2 Len+3 ACK 0xF5 0 0 0 Eigenvalues CHK 0xF5 Notes： Length of Eigenvalues (Len -3) is 193 bytes. 16.
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UART Fingerprint Sensor (C) 2）Data packet Byte 1 2 3 4 5---Len+1 Len+2 Len+2 ACK 0xF5 0 0 0 Eigenvalues CHK 0xF5 Notes：Length of Eigenvalues (Len -3) is 193 bytes. ACK Format： Byte ACK 1 2 0xF5 0x43 3 4 5 User ID User ID (High 8 Bit) (Low 8 Bit ) 6 7 8 0 CHK 0xF5 Permission （1/2/3） ACK_NOUSER 19.
PAGE 12
UART Fingerprint Sensor (C) Byte 1 2 3 4 5 6 7 8 CMD 0xF5 0x2B 0 0 0 0 CHK 0xF5 ACK Format： 1）Data head： Byte 1 2 3 4 5 ACK 0xF5 0x2B Hi(Len) Low(Len) ACK_SUCCUSS ACK_FAIL 6 7 8 0 CHK 0xF5 2）Data packet Byte 1 ACK 0xF5 2 3 4---Len+1 User ID User ID User information (User (High 8 Bit) (Low 8 Bit) ID and permission） Len+2 Len+3 CHK 0xF5 Notes： Data length of Data packet (Len) is ”3*User ID+2” User information Format： Byte Data 4 5 6 User ID1 User ID1
PAGE 13
UART Fingerprint Sensor (C) COMMUNICATION PROCESS ADD FINGERPRINT Begin Send CMD=0x01 command No Response Q3=ACK_FULL If database is full？ Yes Acquire fingerprint timeout, response Q3=ACK_TIMEOUT Process image eigenvalue is less , response Q3=ACK_FAIL Response Q3=ACK_SUCCESS Send CMD=0x02 command Acquire fingerprint timeout, response Q3=ACK_TIMEOUT Process image eigenvalue is less , response Q3=ACK_FAIL Response Q3=ACK_SUCCESS Send CMD=0x03 command Acquire fingerprint timeout, response Q3=
PAGE 14
UART Fingerprint Sensor (C) DELETE USER Begin Send CMD=0x04 Delete user whose ID is P1/P2 Delete failed, response Q3=ACL_FAIL Response Q3=ACK_SUCCESS End DELETE ALL USERS Begin Send CMD=0x05 Delete all users Delete failed, response Q3=ACL_FAIL Response Q3=ACK_SUCCESS End V1.0 www.waveshare.
PAGE 15
UART Fingerprint Sensor (C) ACQUIRE IMAGE AND UPLOAD EIGENVALUE Begin Send CMD=0x23 Acquire fingerprint Timeout, response Q3=ACK_TIMEOUT Process image Eigenvalue is less, response Q3=ACK_FAIL Return eigenvalue data packet , End response Q3=ACK_SUCCESS V1.0 www.waveshare.
PAGE 16
UART Fingerprint Sensor (C) USER GUIDES If you want to connect the fingerprint module to PC, you need to buy one UART to USB module. We recommend you use Waveshare FT232 USB UART Board (micro) module. If you want to connect the fingerprint module to development board like Raspberry Pi, if the working level of your board is 3.3V, you can directly connect it to UART and GPIO pins of your board. If it is 5V, please add level convert module/circuity.
PAGE 17
UART Fingerprint Sensor (C) TESTING ⚫ Download UART Fingerprint Sensor test software from wiki ⚫ Open software and choose the correct COM port.(The software can only support COM1~COM8, if the COM port in your PC is out of this range, please modify it) ⚫ Testing There are several functions provided in Testing interface 1. Query Count Choose Count, then click Send. The count of users is returned and display in Information Response interface 2.
PAGE 18
UART Fingerprint Sensor (C) CONNECT TO XNUCLEO-F103RB We provide a demo codes for XNCULEO-F103RB, you can download from wiki UART Fingerprint Sensor (C) XNUCLEO-F103RB Vcc 3.3V GND GND RX PA9 TX PA10 RST PB5 WAKE PB3 Note: About the pins, please refer to Interface above 1. Connect UART Fingerprint Sensor (C) to XNUCLEO_F103RB, and connect programmer 2. Open project (demo code) by keil5 software 3. Check if programmer and device are recognized normally 4. Compile and download 5.