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UART Fingerprint Sensor (C)
User Manual
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Waveshare UART Fingerprint Sensor (C) User Manual

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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
User guides ......................................................................................................................................... 16
Connect to PC ............................................................................................................................. 16
Connect to XNUCLEO-F103RB ..................................................................................................... 18
Connect to Raspberry Pi .............................................................................................................. 18
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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.
Based on a high-performance Cortex processor, combined with high-security commercial fingerprinting algorithm, the UART Fingerprint Sensor (C) features functionalities like fingerprint enrolling, image acquisition, feature finding, template generating and storing, fingerprint matching, and so on. Without any knowledge about the complicate fingerprinting algorithm, all you need to do is just sending some UART commands, to quickly integrate it into fingerprint verification applications which require small size and high precision.
FEATURES ⚫ Easy to use by some simple commands, you don't have to know any fingerprint technology, or
the module inter structure ⚫ Commercial fingerprinting algorithm, stable performance, fast verification, supports fingerprint
enrolling, fingerprint matching, collect fingerprint image, and upload fingerprint feature, etc.
⚫ Capacitive sensitive detection, just touch the collecting window lightly for fast verification ⚫ Hardware highly integrated, processor and sensor in one small chip, suit for small size
applications
⚫ Narrow stainless-steel rim, large touching area, supports 360° omni-directional verification ⚫ Embedded human sensor, the processor will enter sleep automatically, and wake up when
touching, lower power consumption ⚫ Onboard UART connector, easy to connect with hardware platforms like STM32 and Raspberry Pi
SPECIFICATION
⚫ Sensor type: capacitive touching ⚫ Resolution: 508DPI ⚫ Image pixels: 192×192 ⚫ Image grey scale: 8 ⚫ Sensor size: R15.5mm ⚫ Fingerprint capacity: 500 ⚫ Matching time: <500ms (1:N, and N≤100) ⚫ False acceptance rate: <0.001% ⚫ False rejection rate: <0.1% ⚫ Operating voltage: 2.7~3.3V ⚫ Operating current: <50mA ⚫ Sleep current: <16uA ⚫ Anti-electrostatic: contact discharge 8KV / aerial discharge 15KV ⚫ Interface: UART
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⚫ Baudrate: 19200 bps ⚫ Operating environment:
◼ 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
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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.
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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. The format commands and responses should be:
1) =8 bytes
Byte
1 2 3 4 5 6 7 8 CMD
0xF5
CMD
P1
P2
P3 0 CHK
0xF5
ACK
0xF5
CMD
Q1
Q2
Q3 0 CHK
0xF5
Notes: CMD: Type of command/response P1, P2, P3: Parameters of command Q1, Q2, Q3: Parameters of response
Q3: Generally Q3 is valid/invalid information of the operation, it should be:
#define ACK_SUCCESS 0x00 //操作成功
#define ACK_FAIL 0x01 //操作失败
#define ACK_FULL 0x04 //指纹数据库已满 #define ACK_NOUSER 0x05 //无此用户 #define ACK_USER_OCCUPIED 0x06 //用户已存在 #define ACK_FINGER_OCCUPIED 0x07 //指纹已存在 #define ACK_TIMEOUT 0x08 //采集超时
CHK: Checksum, it is XOR result of bytes from Byte 1 to Byte 6
2) >8 bytes. This data contains two parts: data head and data packet data head:
Byte
1 2 3 4 5 6 7 8 CMD
0xF5
CMD
Hi(Len)
Low(Len)
0 0 CHK
0xF5
ACK
0xF5
CMD
Hi(Len)
Low(Len)
Q3 0 CHK
0xF5
Note: CMD, Q3: same as 1) Len: Length of valid data in data packet, 16bits (two bytes) Hi(Len): High 8 bits of Len Low(Len): Low 8 bits of Len
CHK: Checksum, it is XOR result of bytes from Byte 1 to Byte 6 data packet:
Byte
1
2…Len+1
Len+2
Len+3
CMD
0xF5
Data
CHK
0xF5
ACK
0xF5
Data
CHK
0xF5
Note:
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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.
COMMANDS TYPES:
1. Modify SN number of module（CMD/ACK both 8 Byte）
Byte 1 2 3 4 5 6 7 8
CMD
0xF5
0x08
New SN
(Bit 23-16)
New SN
(Bit 15-8)
New
SN(Bit 7-0)
0
CHK
0xF5
ACK
0xF5
0x08
old SN
(Bit 23-16)
old SN
(Bit 15-8)
old SN
(Bit 7-0)
0
CHK
0xF5
Notes: SN numbers is 24 bits constant.
2. Query Model SN（CMD/ACK both 8 Byte）
Byte 1 2 3 4 5 6 7 8
CMD
0xF5
0x2A 0 0 0 0
CHK
0xF5
ACK
0xF5
0x2A
SN
(Bit 23-16)
SN
(Bit 15-8)
SN
(Bit 7-0)
0
CHK
0xF5
3. Sleep Mode（CMD/ACK both 8 Byte）
Byte 1 2 3 4 5 6 7 8
CMD
0xF5
0x2C 0 0 0 0
CHK
0xF5
ACK
0xF5
0x2C 0 0 0 0
CHK
0xF5
4. Set/Read fingerprint adding mode（CMD/ACK both 8 Byte） There are two mode: enable duplication mode and disable duplication mode. When module is in disable duplication mod: same fingerprint could only added as one ID. If you want to add another ID with the same fingerprint, DSP response failed information. Module is in disable mode after powering on.
Byte 1 2 3 4
5
6 7 8
CMD
0xF5
0x2D
0
Byte5=0: 0:Enable
1:Disbale
Byte5=1：0
0: new mode
1：read
current mode
0
CHK
0xF5
ACK
0xF5
0x2D
0
Current mode
ACK_SUCCUSS
ACK_FAIL
0
CHK
0xF5
5. Add fingerprint（CMD/ACK both 8 Byte） Master device should send commands triple times to module and add fingerprint triple times, make sure the fingerprint added is valid.
a) First
Byte 1 2 3 4
5
6 7 8
CMD
0xF5 0x01 User ID
(High 8Bit )
User ID
(Low 8Bit )
Permission（1/2/3）
0
CHK
0xF5
ACK
0xF5 0x0
1
0
0
ACK_SUCCESS
ACK_FAIL
0
CHK
0xF5
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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 3 4
5
6 7 8
CMD
0xF5
0x02
User ID
(High 8Bit )
User ID
(Low 8Bit )
Permission （1/2/3）
0
CHK
0xF5
ACK
0xF5
0x02 0 0
ACK_SUCCESS
ACK_FAIL
ACK_TIMEOUT
0
CHK
0xF5
c) third
Byte 1 2 3 4
5
6 7 8
CMD
0xF5
0x03
User ID
(High 8Bit )
User ID
(Low 8Bit )
Permission
（1/2/3）
0
CHK
0xF5
ACK
0xF5
0x03 0 0
ACK_SUCCESS
ACK_FAIL
ACK_TIMEOUT
0
CHK
0xF5
Notes： User ID and Permission in three commands.
6. Add users and upload eigenvalues（CMD =8Byte/ACK > 8 Byte） This commands are similar to “5. add fingerprint”, you should add triple times as well.
a) First
Same as the First of ”5. add fingerprint”
b) Second
Same as the Second of ”5. add fingerprint”
c) Third CMD Format：
Byte 1 2 3 4 5 6 7 8
CMD
0xF5
0x06 0 0 0 0
CHK
0xF5
ACK Format： 1）Data head：
Byte 1 2 3 4 5 6 7 8
ACK
0xF5
0x06
Hi(Len)
Low(Len)
ACK_SUCCESS
ACK_FAIL
ACK_TIMEOUT
0
CHK
0xF5
2）Data packet：
Byte 1 2 3 4
5---Len+1
Len+2
Len+3
ACK
0xF5 0 0 0 Eigenvalues
CHK
0xF5
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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 5 6 7 8
CMD
0xF5
0x04
User ID
(High 8Bit )
User ID
(Low 8Bit )
0
0
CHK
0xF5
ACK
0xF5
0x04 0 0
ACK_SUCCESS
ACK_FAIL
0
CHK
0xF5
8. Delete all users（CMD/ACK both 8 Byte）
Byte 1 2 3 4 5 6 7 8
CMD
0xF5
0x05 0 0
0：Delete all users
1/2/3: delete users
whose permission is
1/2/3
0
CHK
0xF5
ACK
0xF5
0x05 0 0
ACK_SUCCESS
ACK_FAIL
0
CHK
0xF5
9. Query count of users（CMD/ACK both 8 Byte）
Byte 1 2 3 4 5 6 7 8
CMD
0xF5
0x09 0 0
0：Query Count
0xFF：Query
Amount
0
CHK
0xF5
ACK
0xF5
0x09
Count
/Amount
(High 8Bit )
Count
/Amount
(Low
8Bit )
ACK_SUCCESS
ACK_FAIL
0xFF(CMD=0xFF)
0
CHK
0xF5
10. 比对 1:1（CMD/ACK both 8Byte）
Byte 1 2 3 4
5
6 7 8
CMD
0xF5
0x0B
User ID
(High 8 Bit )
User ID
(Low 8 Bit)
0
0
CHK
0xF5
ACK
0xF5
0x0B 0 0
ACK_SUCCESS
ACK_FAIL
ACK_TIMEOUT
0
CHK
0xF5
11. Comparison 1：N（CMD/ACK both 8 Byte）
Byte 1 2 3 4
5
6 7 8
CMD
0xF5
0x0C 0 0
0
0
CHK
0xF5
ACK
0xF5
0x0C
User ID
(High 8 Bit )
User ID
(Low 8 Bit )
Permission
(1/2/3)
ACK_NOUSER
ACK_TIMEOUT
0
CHK
0xF5
12. Query Permission（CMD/ACK both 8 Byte）
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Byte 1 2 3 4
5
6 7 8
CMD
0xF5
0x0A
User
ID(High
8Bit )
User
ID(Low8Bit )
0
0
CHK
0xF5
ACK
0xF5
0x0A 0 0
Permission
(1/2/3)
ACK_NOUSER
0
CHK
0xF5
13. Set/Query comparison level（CMD/ACK both 8 Byte）
Byte 1 2
3
4
5
6 7 8
CMD
0xF5
0x28
0
Byte5=0: New Level
Byte5=1: 0
0：Set Level
1：Query Level
0
CHK
0xF5
ACK
0xF5
0x28 0 Current Level
ACK_SUCCUSS
ACK_FAIL
0
CHK
0xF5
Notes：Comparison level can be 0~9, larger the value, stricter the comparison. Default 5
14. Acquire image and upload（CMD=8 Byte/ACK >8 Byte） CMD Format：
Byte 1 2 3 4 5 6 7 8
CMD
0xF5
0x24 0 0 0 0
CHK
0xF5
ACK Format： 1）Data head：
Byte 1 2 3 4 5 6 7 8
ACK
0xF5
0x24
Hi(Len)
Low(Len)
ACK_SUCCUSS
ACK_FAIL
ACK_TIMEOUT
0
CHK
0xF5
2）Data packet
Byte
1
2---Len+1
Len+2
Len+3
ACK
0xF5
Image data
CHK
0xF5
Notes：
In DSP module, the pixels of fingerprint image are 280*280, every pixel is represented by 8 bits. When uploading, DSP is skip pixels sampling in horizontal/vertical direction to reduce data size, so that the image became 140*140, and just take the high 4 bits of pixel. each two pixels composited into one byte for transferring (previous pixel high 4-bit, last pixel low 4-pixe).
Transmission starts line by line from the first line, each line starts from the first pixel, totally transfer 140* 140/ 2 bytes of data.
Data length of image is fixed of 9800 bytes.
15. Acquire image and upload eigenvalues（CMD=8 Byte/ACK > 8Byte）
CMD Format：
Byte 1 2 3 4
5
6 7 8
CMD
0xF5
0x23 0 0
0
0
CHK
0xF5
ACK Format： 1）Data head：
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Byte 1 2 3 4
5
6 7 8
ACK
0xF5
0x23
Hi(Len)
Low(Len)
ACK_SUCCUSS
ACK_FAIL
ACK_TIMEOUT
0
CHK
0xF5
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. Download eigenvalues and compare with fingerprint acquired（CMD >8 Byte/ACK=8 Byte）
CMD Format： 1）Data head：
Byte 1 2 3 4 5 6 7 8
CMD
0xF5
0x44
Hi(Len)
Low(Len)
0 0 CHK
0xF5
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. ACK Format：
Byte 1 2 3 4 5 6 7 8
ACK
0xF5
0x44 0 0
ACK_SUCCUSS
ACK_FAIL
ACK_TIMEOUT
0
CHK
0xF5
17. Download eigenvalues and comparison 1:1（CMD >8 Byte/ACK=8 Byte）
CMD Format： 1）Data head：
Byte 1 2 3 4 5 6 7 8
CMD
0xF5
0x42
Hi(Len)
Low(Len)
0 0 CHK
0xF5
2）Data packet
Byte 1 2
3 4 5---Len+1
Len+2
Len+2
ACK
0xF5
User ID
(High 8 Bit)
User ID
(Low 8 Bit)
0 Eigenvalues
CHK
0xF5
Notes： Length of Eigenvalues (Len -3) is 193 bytes. ACK Format：
Byte 1 2 3 4 5 6 7 8
ACK
0xF5
0x43 0 0
ACK_SUCCUSS
ACK_FAIL
0
CHK
0xF5
18. Download eigenvalues and comparison 1:N（CMD >8 Byte/ACK=8 Byte）
CMD Format： 1）Data head：
Byte 1 2 3 4 5 6 7 8
CMD
0xF5
0x43
Hi(Len)
Low(Len)
0 0 CHK
0xF5
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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 1 2 3 4
5
6 7 8
ACK
0xF5
0x43
User ID
(High 8 Bit)
User ID
(Low 8 Bit )
Permission
（1/2/3）
ACK_NOUSER
0
CHK
0xF5
19. Upload eigenvalues from DSP model CMD=8 Byte/ACK >8 Byte）
CMD Format：
Byte 1 2 3 4 5 6 7 8
CMD
0xF5
0x31
User ID
(High 8 Bit )
User ID
(Low 8 Bit )
0 0 CHK
0xF5
ACK Format： 1）Data head：
Byte 1 2 3 4
5
6 7 8
ACK
0xF5
0x31
Hi(Len)
Low(Len)
ACK_SUCCUSS
ACK_FAIL
ACK_NOUSER
0
CHK
0xF5
2）Data packet
Byte 1 2 3 4
5---Len+1
Len+2
Len+3
ACK
0xF5
User ID
(High 8 Bit )
User ID(Low
8 Bit )
Permission
（1/2/3）
Eigenvalues
CHK
0xF5
Notes： Length of Eigenvalues (Len -3) is 193 bytes.
20. Download eigenvalues and save as User ID to DSP（CMD>8 Byte/ACK =8 Byte）
CMD Format： 1）Data head：
Byte 1 2 3 4 5 6 7 8
CMD
0xF5
0x41
Hi(Len)
Low(Len)
0 0 CHK
0xF5
2）Data packet
Byte 1 2 3 4
5---Len+1
Len+2
Len+3
ACK
0xF5
User ID
(High 8 Bit)
User ID
(Low8 Bit)
Permission
（1/2/3）
Eigenvalues
CHK
0xF5
Notes：Length of Eigenvalues (Len -3) is 193 bytes. ACK Format：
Byte 1 2 3 4 5 6 7 8
ACK
0xF5
0x41
User ID
(High 8 Bit )
User ID
(Low 8 Bit)
ACK_SUCCESS
ACK_FAIL
0
CHK
0xF5
21. Query information (ID and permission) of all users added（CMD=8 Byte/ACK >8Byte）
CMD Format：
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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
6 7 8
ACK
0xF5
0x2B
Hi(Len)
Low(Len)
ACK_SUCCUSS
ACK_FAIL
0
CHK
0xF5
2）Data packet
Byte 1 2 3 4---Len+1
Len+2
Len+3
ACK
0xF5
User ID
(High 8 Bit)
User ID
(Low 8 Bit)
User information (User
ID and permission）
CHK
0xF5
Notes： Data length of Data packet (Len) is ”3*User ID+2” User information Format：
Byte 4 5 6 7 8 9
…
Data
User ID1
(High 8 Bit )
User ID1
(Low 8 Bit )
User 1
Permission
(1/2/3)
User ID2
(High 8 Bit )
User ID2
(Low 8 Bit )
User 2
Permission
(1/2/3)
…
22. Set/Query fingerprint capture timeout（CMD/ACK both 8 Byte）
Byte 1 2 3 4
5
6 7 8
CMD
0xF5
0x2E
0
Byte5=0: timeout
Byte5=1: 0
0：Set timeout
1：query timeout
0
CHK
0xF5
ACK
0xF5
0x2E 0 timeout
ACK_SUCCUSS
ACK_FAIL
0
CHK
0xF5
Notes： Range of fingerprint waiting timeout (tout) value is 0-255. If the value is 0, the fingerprint acquisition process will keep continue if no fingerprints press on; If the value is not 0, the system will exist for reason of timeout if no fingerprints press on in time tout * T0.
Note: T0 is the time required for collecting/processing an image, usually 0.2- 0.3 s.
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COMMUNICATION PROCESS
ADD FINGERPRINT
Begin
Send CMD=0x01 command
If database is full？
Acquire fingerprint
Process image
Response Q3=ACK_SUCCESS
Send CMD=0x02 command
Acquire fingerprint
Process image
Judge uniqueness（Only do in disable duplication
mode）
Add fingerprint to database
Response Q3=ACK_SUCCESS
End
Fingerprint has existed, response
Q3=ACK_USER_EXIST
eigenvalue is less , response Q3=ACK_FAIL
timeout, response Q3=ACK_TIMEOUT
Response Q3=ACK_FULL
Send CMD=0x03 command
Response Q3=ACK_SUCCESS
Acquire fingerprint
Process image
eigenvalue is less , response Q3=ACK_FAIL
timeout, response Q3=ACK_TIMEOUT
eigenvalue is less , response
timeout, response Q3=ACK_TIMEOUT
Yes No
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DELETE USER
DELETE ALL USERS
Begin
Send CMD=0x04
Delete user whose ID is P1/P2
Response Q3=ACK_SUCCESS
Delete failed, response Q3=ACL_FAIL
End
Begin
Send CMD=0x05
Delete all users
Response Q3=ACK_SUCCESS
Delete failed, response Q3=ACL_FAIL
End
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ACQUIRE IMAGE AND UPLOAD EIGENVALUE
Begin
End
Send CMD=0x23
Acquire fingerprint
Process image
Return eigenvalue data packet ,
response Q3=ACK_SUCCESS
Eigenvalue is less, response Q3=ACK_FAIL
Timeout, response Q3=ACK_TIMEOUT
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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.
CONNECT TO PC
HARDWARE CONNECTION
You need:
⚫ UART Fingerprint Sensor (C)*1 ⚫ FT232 USB UART Board *1 ⚫ micro USB cable *1
Connect the fingerprint module and FT232 USB UART Board to PC
UART Fingerprint Sensor (C)
FT232 USB UART Board
Vcc
Vcc
GND
GND
RX
TX
TX
RX
RST
NC
WAKE
NC
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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. Add User
Choose Add User, check Acquire Twice and Auto ID+1, type the ID (P1 and P2) and permission (P3), then click Send. Finally, touch sensor to acquire fingerprint.
3. Delete user
Choose Delete User, type the ID (P1 and P2) and permission (P3), then click Send.
4. Delete All Users
Choose Delete All Users, then click Send
5. Comparison 1:1
Choose 1:1 Comparison, type the ID (P1 and P2) and permission (P3), then click Send.
6. Comparison 1:N
Choose 1:N Comparison, then click Send.
… For more function, please test it. (Some of the functions are unavailable for this module)
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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. Connect XNUCELO-F103RB to PC by USB cable, open Serial assistance software, set COM port:
115200, 8N1
Type commands to test module according to information returned.
CONNECT TO RASPBERRY PI We provide python example for Raspberry Pi, you can download it from wiki
Before you use the example, you should enable serial port of Raspberry Pi first: Input command on Terminal: sudo raspi-config Choose: Interfacing Options -> Serial -> No -> Yes Then reboot.
UART Fingerprint Sensor (C)
Raspberry Pi
Vcc
3.3V
GND
GND
RX
14 (BCM) – PIN 8 (Board)
TX
15 (BCM) – PIN 10 (Board)
RST
24 (BCM) – PIN 18 (Board)
WAKE
23 (BCM) – PIN 16 (Board)
1. Connect fingerprint module to Raspberry Pi
2. Download demo code to Raspberry Pi:
wget https://www.waveshare.com/w/upload/9/9d/UART-Fignerprint-RaspberryPi.tar.gz
3. unzip it
tar zxvf UART-Fignerprint-RaspberryPi.tar.gz
4. Run the example
cd UART-Fignerprint-RaspberryPi/ sudo python main.py
5. Following guides to test the module.
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