Optical Fingerprint Sensor (UART, 1000 Fingerprints)
Optical fingerprint module stores up to 1000 fingerprints and communicates via UART. Compatible with Arduino and similar microcontrollers for access control and security applications.
Optical fingerprint module stores up to 1000 fingerprints and communicates via UART. Compatible with Arduino and similar microcontrollers for access control and security applications.
Signal ground, documented by DFRobot SEN0188 pinout as cable position 1, black wire.
UART receive/data input, TTL logical level, documented as cable position 2, white wire.
UART transmit/data output, TTL logical level, documented as cable position 3, green wire.
Power input, documented as cable position 4, red wire.
Induction signal output, documented as cable position 5, yellow wire.
Touch induction power input, documented as cable position 6, blue wire.
| Pin | Position | Type | Function | Voltage |
|---|---|---|---|---|
| GND | 1 | Ground | Signal ground, documented by DFRobot SEN0188 pinout as cable position 1, black wire. | |
| RD | 2 | Signal | UART receive/data input, TTL logical level, documented as cable position 2, white wire. | TTL logical level |
| TD | 3 | Signal | UART transmit/data output, TTL logical level, documented as cable position 3, green wire. | TTL logical level |
| VIN | 4 | Power | Power input, documented as cable position 4, red wire. | |
| SOUT | 5 | Signal | Induction signal output, documented as cable position 5, yellow wire. | |
| VTOUCH | 6 | Power | Touch induction power input, documented as cable position 6, blue wire. |
Signal ground, documented by DFRobot SEN0188 pinout as cable position 1, black wire.
UART receive/data input, TTL logical level, documented as cable position 2, white wire.
UART transmit/data output, TTL logical level, documented as cable position 3, green wire.
Power input, documented as cable position 4, red wire.
Induction signal output, documented as cable position 5, yellow wire.
Touch induction power input, documented as cable position 6, blue wire.
UART · I2C · Analog · 3.3 – 5 V · Breakout
Verify supply voltage and logic levels before powering up.
Module pins: VIN, VTOUCH, GND, RD, TD, SOUT. Schematik maps them to your board in the app.
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