# Smart Face Recognition Door Lock

## Description

Production\-intent 70 × 48 mm ESP32\-S3 controller for a face\-recognition door lock, with 12 V input, biometric and mmWave interfaces, protected lock actuation, native USB, and 5 V/3\.3 V power rails\.

## Project Details

- **Owner:** python1977
- **Created:** 9/20/2026
- **Last Updated:** 9/20/2026
- **Visibility:** Public

## Key Components

### BZ1 — [CMI\-9705\-0580\-SMT\-TR](https://flux.ai/adrian95/cmi-9705-0580-smt-tr~3md.md)

- Manufacturer Part Number: CMI\-9705\-0580\-SMT\-TR
- Package or Case Code: CMI97050580SMTTR
- Role: Audio Indicator
- Functional Group: Buzzer
- Datasheet URL: https://www\.cuidevices\.com/product/resource/cmi\-9705\-0580\-smt\-tr\.pdf
- Manufacturer Name: Same Sky \(Formerly CUI Devices\)
- Part Type: Buzzer
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role Details: 5V internally driven 9\.7mm magnetic active buzzer

**Pins:**
- \- [pin 2]
- \+ [pin 1]

### D1 — [STPS5L60S](https://flux.ai/lcsc/stps5l60s~foiv.md)

- Functional Group: Input Protection and 5V Power
- Manufacturer Name: ST\(意法半导体\)
- LCSC Part Number: C140620
- JLCPCB Part Class: Extended Part
- Manufacturer Part Number: STPS5L60S
- Role: Source ORing
- Package or Case Code: SMC\_L6\.9\-W5\.9\-LS7\.9\-RD
- Role Details: 5A Schottky prevents screw\-terminal source backfeeding barrel source
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2409302301\_STMicroelectronics\-STPS5L60S\_C140620\.pdf
- Part Type: Schottky Barrier Diodes \(SBD\)
- Product Info Url: https://lcsc\.com/product\-detail/Schottky\-Barrier\-Diodes\-SBD\_STMicroelectronics\_STPS5L60S\_STPS5L60S\_C140620\.html

**Pins:**
- A [pin 2]
- C [pin 1]

### D2 — [STPS5L60S](https://flux.ai/lcsc/stps5l60s~foiv.md)

- Manufacturer Name: ST\(意法半导体\)
- Role Details: 5A Schottky prevents barrel source backfeeding screw\-terminal source
- LCSC Part Number: C140620
- JLCPCB Part Class: Extended Part
- Manufacturer Part Number: STPS5L60S
- Package or Case Code: SMC\_L6\.9\-W5\.9\-LS7\.9\-RD
- Functional Group: Input Protection and 5V Power
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2409302301\_STMicroelectronics\-STPS5L60S\_C140620\.pdf
- Part Type: Schottky Barrier Diodes \(SBD\)
- Role: Source ORing
- Product Info Url: https://lcsc\.com/product\-detail/Schottky\-Barrier\-Diodes\-SBD\_STMicroelectronics\_STPS5L60S\_STPS5L60S\_C140620\.html

**Pins:**
- A [pin 2]
- C [pin 1]

### D3 — [SMBJ18A\-13\-F](https://flux.ai/lcsc/smbj18a-13-f~uiys.md)

- Part Type: TVS
- Product Info Url: https://lcsc\.com/product\-detail/TVS\_DIODES\_SMBJ18A\-13\-F\_SMBJ18A\-13\-F\_C135055\.html
- LCSC Part Number: C135055
- Package or Case Code: SMB\_L4\.6\-W3\.6\-LS5\.3\-RD
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/lcsc/2304140030\_Diodes\-Incorporated\-SMBJ18A\-13\-F\_C135055\.pdf
- Role: Surge Protection
- Manufacturer Part Number: SMBJ18A\-13\-F
- JLCPCB Part Class: Extended Part
- Manufacturer Name: DIODES\(美台\)
- Role Details: 18V standoff 600W TVS on protected 12V rail
- Functional Group: Input Protection and 5V Power

**Pins:**
- A [pin 2]
- K [pin 1]

### D4 — [USBLC6\-2SC6](https://flux.ai/vasy_skral/usblc6-2sc6~g1b.md)

- Manufacturer Part Number: USBLC6\-2SC6
- Symbol Style: parametric\-v1
- License: https://creativecommons\.org/licenses/by/4\.0/
- Part Type: Protection
- Manufacturer Name: STMicroelectronics
- Datasheet URL: https://www\.st\.com/content/ccc/resource/technical/document/datasheet/06/1d/48/9c/6c/20/4a/b2/CD00050750\.pdf/files/CD00050750\.pdf/jcr:content/translations/en\.CD00050750\.pdf
- Functional Group: MCU and USB
- LCSC Part Number: C7519
- Role: ESD Protection
- Role Details: Low\-capacitance two\-line USB D\+/D\- ESD array

**Pins:**
- GND [pin 2]
- I/O1 [pin 6]
- I/O1 [pin 1]
- I/O2 [pin 3]
- I/O2 [pin 4]
- VBUS [pin 5]

### D5 — [ESD5341N](https://flux.ai/lcsc/esd5341n~k8iz.md)

- Forward Voltage: 0\.7V at 1AV
- Datasheet URL: https://www\.lcsc\.com/datasheet/C3021106\.pdf?spm=wm\.sxq\.inf\.ggs&lcsc\_vid=FlkNBAIDRQULVABfFAVZBgZVFVZYBgZSQ1NeBVIFQlExVlNeR1VbVVxRR1JXUTsOAxUeFF5JWBYZEEoKFBINSQcJGk4dAgUUFAk%3D
- Manufacturer Name: TECH PUBLIC\(台舟\)
- Diode Type: TVS Diode
- JLCPCB Part Class: Extended Part
- LCSC Part Number: C3021106
- Manufacturer Part Number: ESD5341N
- Role Details: USB VBUS 5V ESD clamp; VBUS is sense\-only and isolated from system 5V
- Package or Case Code: DFN1006\-2L\-RD
- Role: ESD Protection
- Part Type: TVS
- License: https://creativecommons\.org/licenses/by/4\.0/
- Functional Group: MCU and USB
- Max Reverse Voltage: 5V

**Pins:**
- 1 [pin 1]
- 2 [pin 2]

### D6 — [SS14](https://flux.ai/cherepanyadima/ss14~5b.md)

- Manufacturer Name: Slkor\(SLKORMICRO Elec\.\)
- Functional Group: Lock Driver
- Datasheet URL: https://datasheet\.lcsc\.com/lcsc/1912111437\_Slkor\-SLKORMICRO\-Elec\-\-SS14\_C444721\.pdf
- Part Type: Diode
- Role: Coil Flyback
- Manufacturer Part Number: SS14
- Role Details: Relay coil flyback diode, cathode to 5V
- License: https://creativecommons\.org/licenses/by/4\.0/

**Pins:**
- Anode [pin A]
- Cathode [pin C]

### D7 — [SS34\-E3/57T](https://flux.ai/adrian95/ss34-e357t~rn2.md)

- Role Details: 3A 40V lock suppression at J2, cathode to switched \+12V
- Manufacturer Part Number: SS34\-E3/57T
- Datasheet URL: https://www\.vishay\.com/docs/88751/ss32\.pdf
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role: Load Flyback
- Part Type: Diode
- Functional Group: Lock Driver
- Manufacturer Name: Vishay General Semiconductor \- Diodes Division

**Pins:**
- A [pin 2]
- K [pin 1]

### D8 — [SS14](https://flux.ai/cherepanyadima/ss14~5b.md)

- Role Details: Active magnetic buzzer suppression, cathode to 5V
- Manufacturer Name: Slkor\(SLKORMICRO Elec\.\)
- Datasheet URL: https://datasheet\.lcsc\.com/lcsc/1912111437\_Slkor\-SLKORMICRO\-Elec\-\-SS14\_C444721\.pdf
- Part Type: Diode
- Functional Group: Buzzer
- Role: Load Flyback
- Manufacturer Part Number: SS14
- License: https://creativecommons\.org/licenses/by/4\.0/

**Pins:**
- Anode [pin A]
- Cathode [pin C]

### F1 — [0451004\.MRL](https://flux.ai/adrian95/0451004pmrl~edp.md)

- Role: Fuse
- Part Type: Fuse
- Manufacturer Part Number: 0451004\.MRL
- Manufacturer Name: Littelfuse Inc\.
- Role Details: 4A input fuse sized for 2A lock plus reflected electronics peak and margin
- Functional Group: Input Protection and 5V Power
- Datasheet URL: https://www\.littelfuse\.com/assetdocs/littelfuse\-fuse\-451\-453\-datasheet?assetguid=533cd5cc\-956c\-4243\-867f\-6ab5a62f6ba1
- Current Rating: 4A
- License: https://creativecommons\.org/licenses/by/4\.0/

**Pins:**
- P1 [pin 1]
- P2 [pin 2]

### H1 — [M3 Mounting Hole](https://flux.ai/vasyl/m3-mounting-hole~kc3.md)

- Product Info Url: https://www\.mcmaster\.com/screws/drive\-style\~torx/rounded\-head\-style\~pan/material\~steel/specifications\-met\~iso\-7045/thread\-size\~m3/finish\~zinc\-plated/
- Role: Protection
- Functional Group: Mechanical
- Role Details: Mechanical M3 3\.2mm mounting hole, intentionally non\-electrical

**Pins:**
- terminal

### H2 — [M3 Mounting Hole](https://flux.ai/vasyl/m3-mounting-hole~kc3.md)

- Product Info Url: https://www\.mcmaster\.com/screws/drive\-style\~torx/rounded\-head\-style\~pan/material\~steel/specifications\-met\~iso\-7045/thread\-size\~m3/finish\~zinc\-plated/
- Role Details: Mechanical M3 3\.2mm mounting hole, intentionally non\-electrical
- Functional Group: Mechanical
- Role: Protection

**Pins:**
- terminal

### H3 — [M3 Mounting Hole](https://flux.ai/vasyl/m3-mounting-hole~kc3.md)

- Role Details: Mechanical M3 3\.2mm mounting hole, intentionally non\-electrical
- Product Info Url: https://www\.mcmaster\.com/screws/drive\-style\~torx/rounded\-head\-style\~pan/material\~steel/specifications\-met\~iso\-7045/thread\-size\~m3/finish\~zinc\-plated/
- Role: Protection
- Functional Group: Mechanical

**Pins:**
- terminal

### H4 — [M3 Mounting Hole](https://flux.ai/vasyl/m3-mounting-hole~kc3.md)

- Product Info Url: https://www\.mcmaster\.com/screws/drive\-style\~torx/rounded\-head\-style\~pan/material\~steel/specifications\-met\~iso\-7045/thread\-size\~m3/finish\~zinc\-plated/
- Role Details: Mechanical M3 3\.2mm mounting hole, intentionally non\-electrical
- Role: Protection
- Functional Group: Mechanical

**Pins:**
- terminal

### J1 — [1729128](https://flux.ai/adrian95/1729128~gmm.md)

- Package or Case Code: 1729128
- Role Details: 12V screw\-terminal source, 17\.5A rated
- Manufacturer Name: Phoenix Contact
- Part Type: Connector
- Datasheet URL: http://www\.phoenixcontact\.net/product/1729128
- Role: Input Connector
- License: https://creativecommons\.org/licenses/by/4\.0/
- Functional Group: Input Protection and 5V Power
- Manufacturer Part Number: 1729128

**Pins:**
- 1 [pin 1]
- 2 [pin 2]

### J2 — [1729128](https://flux.ai/adrian95/1729128~gmm.md)

- Role Details: Switched 12V lock output, 17\.5A rated
- Package or Case Code: 1729128
- Functional Group: Lock Driver
- Manufacturer Name: Phoenix Contact
- Part Type: Connector
- Role: Output Connector
- Datasheet URL: http://www\.phoenixcontact\.net/product/1729128
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Part Number: 1729128

**Pins:**
- 1 [pin 1]
- 2 [pin 2]

### J3 — [DC\-005](https://flux.ai/cherepanyadima/dc-005.md)

- Symbol Style: parametric\-v1
- Role Details: 12V center\-positive 5\.5x2\.1mm barrel source, 5A class
- Manufacturer Name: Best Inc
- Datasheet URL: https://www\.snapeda\.com/parts/DC\-005/Best%20Inc\./datasheet/
- Functional Group: Input Protection and 5V Power
- Role: Input Connector
- Manufacturer Part Number: DC\-005
- Part Type: Connectors

**Pins:**
- 2 [pin 2]
- 3 [pin 3]
- 4 [pin 4]

### J4 — [B4B\-XH\-A](https://flux.ai/vasyl/b4b-xh-a~rni.md)

- Datasheet URL: https://www\.snapeda\.com/parts/B4B\-XH\-A\(LF\)\(SN\)/JST%20Sales/datasheet/
- Manufacturer Name: JST
- Manufacturer Part Number: B4B\-XH\-A
- Part Type: Connector
- Functional Group: Biometric Camera
- Role: Biometric Connector
- Role Details: JST\-XH 4\-pin: 5V\_CAM, GND, module TX, module RX

**Pins:**
- 1
- 2
- 3
- 4

### J5 — [Pin Header 01x05 2\.54mm Vertical](https://flux.ai/adrian95/pin-header-01x05-254mm-vertical~cas.md)

- License: https://creativecommons\.org/licenses/by/4\.0/
- Role: Radar Connector
- Part Type: Connector
- Role Details: HLK\-LD2410C 5\-pin 2\.54mm interface: 5V, GND, OUT, TX, RX
- Functional Group: Radar

**Pins:**
- 1 [pin 1]
- 2 [pin 2]
- 3 [pin 3]
- 4 [pin 4]
- 5 [pin 5]

### J6 — [USB4105\-GF\-A](https://flux.ai/adrian95/usb4105-gf-a~im9.md)

- Role: USB Connector
- Part Type: USB C
- Role Details: USB\-C USB 2\.0 device/programming connector
- License: https://creativecommons\.org/licenses/by/4\.0/
- Functional Group: MCU and USB
- Symbol Style: parametric\-v1
- Manufacturer Name: GCT
- Manufacturer Name: GCT
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/c2c7fba82d64960d510c5688ccda39e92973a3ef64f0758ccd8dce8a07cbda76\.pdf
- Manufacturer Part Number: USB4105\-GF\-A

**Pins:**
- CC1 [pin A5]
- CC2 [pin B5]
- DN1 [pin A7]
- DN2 [pin B7]
- DP1 [pin A6]
- DP2 [pin B6]
- GND [pin A1\_B12]
- GND\_\_1 [pin B1\_A12]
- SBU1 [pin A8]
- SBU2 [pin B8]
- SHELL\_GND [pin SH1]
- SHELL\_GND\_\_1 [pin SH2]
- SHELL\_GND\_\_2 [pin SH3]
- SHELL\_GND\_\_3 [pin SH4]
- VBUS [pin A4\_B9]
- VBUS\_\_1 [pin B4\_A9]

### K1 — [G5Q\-1A4 DC5](https://flux.ai/adrian95/g5q-1a4-dc5~oqk.md)

- Role: Relay
- Role Details: 5V coil SPST\-NO; contacts sized with margin above 2A DC lock load
- Datasheet URL: https://components\.omron\.com/us\-en/sites/components\.omron\.com\.us/files/datasheet\_pdf/J155\-E1\.pdf
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Part Number: G5Q\-1A4 DC5
- Functional Group: Lock Driver
- Part Type: Relay
- Manufacturer Name: Omron Electronics Inc\-EMC Div

**Pins:**
- 1 [pin 1]
- 2 [pin 2]
- 3 [pin 3]
- 5 [pin 4]

### Q1 — [AO3400A](https://flux.ai/adrian95/ao3400a~ug9.md)

- Datasheet URL: https://media\.digikey\.com/pdf/Data%20Sheets/Alpha%20&%20Omega/AO3400A\_ds\.pdf
- Functional Group: Lock Driver
- Manufacturer Part Number: AO3400A
- Manufacturer Name: Alpha & Omega Semiconductor Inc\.
- Role Details: 3\.3V logic NMOS relay\-coil driver
- Role: Low\-Side Driver
- License: https://creativecommons\.org/licenses/by/4\.0/
- Part Type: Transistor

**Pins:**
- D [pin 3]
- G [pin 1]
- S [pin 2]

### Q2 — [AO3400A](https://flux.ai/adrian95/ao3400a~ug9.md)

- Datasheet URL: https://media\.digikey\.com/pdf/Data%20Sheets/Alpha%20&%20Omega/AO3400A\_ds\.pdf
- Role Details: 3\.3V logic NMOS active\-buzzer driver
- Manufacturer Part Number: AO3400A
- Manufacturer Name: Alpha & Omega Semiconductor Inc\.
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role: Low\-Side Driver
- Part Type: Transistor
- Functional Group: Buzzer

**Pins:**
- D [pin 3]
- G [pin 1]
- S [pin 2]

### Q3 — [MMBT3904LT1G](https://flux.ai/openpartlist/mmbt3904lt1g~s5.md)

- Manufacturer Part Number: MMBT3904LT1G
- Role: VBUS Sense
- Datasheet URL: https://www\.onsemi\.com/pdf/datasheet/mmbt3904lt1\-d\.pdf
- Manufacturer Name: onsemi
- Part Type: Transistor
- Functional Group: MCU and USB
- Role Details: NPN level\-isolated USB VBUS detector prevents USB back\-power into 3\.3V domain
- License: https://creativecommons\.org/licenses/by/4\.0/

**Pins:**
- B [pin 1]
- C [pin 3]
- E [pin 2]

### SW1 — [B3FS\-1002P](https://flux.ai/adrian95/b3fs-1002p.md)

- Functional Group: MCU and USB
- Datasheet URL: https://omronfs\.omron\.com/en\_US/ecb/products/pdf/en\-b3fs\.pdf
- Part Type: Electromechanical Components
- Manufacturer Name: Omron Electronics Inc\-EMC Div
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role: Reset Switch
- Manufacturer Part Number: B3FS\-1002P
- Role Details: Manual EN\-to\-GND reset button

**Pins:**
- 1 [pin 1]
- 2 [pin 2]
- 3 [pin 3]
- 4 [pin 4]

### SW2 — [B3FS\-1002P](https://flux.ai/adrian95/b3fs-1002p.md)

- Datasheet URL: https://omronfs\.omron\.com/en\_US/ecb/products/pdf/en\-b3fs\.pdf
- Role: Boot Switch
- Functional Group: MCU and USB
- Part Type: Electromechanical Components
- Manufacturer Name: Omron Electronics Inc\-EMC Div
- License: https://creativecommons\.org/licenses/by/4\.0/
- Role Details: Manual GPIO0\-to\-GND boot button
- Manufacturer Part Number: B3FS\-1002P

**Pins:**
- 1 [pin 1]
- 2 [pin 2]
- 3 [pin 3]
- 4 [pin 4]

### U1 — [ESP32\-S3\-WROOM\-1\-N16R8](https://flux.ai/adrian95/esp32-s3-wroom-1-n16r8~fs1.md)

- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/bcd526f54b8de686cec4db67219e36ea7ace50cddb0c92f3dfdac49cf99ffd2e\.pdf
- Functional Group: MCU and USB
- Symbol Style: parametric\-v1
- Role: Controller
- License: https://creativecommons\.org/licenses/by/4\.0/
- Manufacturer Part Number: ESP32\-S3\-WROOM\-1\-N16R8
- Part Type: Module
- Role Details: ESP32\-S3 compute, wireless, USB and I/O controller
- Manufacturer Name: Espressif Systems

**Pins:**
- 3V3 [pin 2]
- EN [pin 3]
- GND\_1 [pin 1]
- GND\_10 [pin 48]
- GND\_11 [pin 49]
- GND\_2 [pin 40]
- GND\_3 [pin 41]
- GND\_4 [pin 42]
- GND\_5 [pin 43]
- GND\_6 [pin 44]
- GND\_7 [pin 45]
- GND\_8 [pin 46]
- GND\_9 [pin 47]
- IO0 [pin 27]
- IO1 [pin 39]
- IO10 [pin 18]
- IO11 [pin 19]
- IO12 [pin 20]
- IO13 [pin 21]
- IO14 [pin 22]
- IO15 [pin 8]
- IO16 [pin 9]
- IO17 [pin 10]
- IO18 [pin 11]
- IO19 [pin 13]
- IO2 [pin 38]
- IO20 [pin 14]
- IO21 [pin 23]
- IO3 [pin 15]
- IO35 [pin 28]
- IO36 [pin 29]
- IO37 [pin 30]
- IO38 [pin 31]
- IO39 [pin 32]
- IO4 [pin 4]
- IO40 [pin 33]
- IO41 [pin 34]
- IO42 [pin 35]
- IO45 [pin 26]
- IO46 [pin 16]
- IO47 [pin 24]
- IO48 [pin 25]
- IO5 [pin 5]
- IO6 [pin 6]
- IO7 [pin 7]
- IO8 [pin 12]
- IO9 [pin 17]
- RXD0 [pin 36]
- TXD0 [pin 37]

### U2 — [AP63301WU\-7](https://flux.ai/adrian95/ap63301wu-7~kez.md)

- License: https://creativecommons\.org/licenses/by/4\.0/
- Role: Buck Regulator
- Manufacturer Name: Diodes Incorporated
- Manufacturer Part Number: AP63301WU\-7
- Part Type: Integrated Circuit
- Functional Group: Input Protection and 5V Power
- Role Details: 12V protected input to 5V, 3A peak system rail
- Datasheet URL: https://www\.diodes\.com/assets/Datasheets/AP63300\-AP63301\.pdf

**Pins:**
- BST [pin 6]
- EN [pin 2]
- FB [pin 1]
- GND [pin 4]
- SW [pin 5]
- VIN [pin 3]

### U3 — [AP63203WU\-7](https://flux.ai/adrian95/ap63203wu-7~o8a.md)

- Role: Buck Regulator
- Manufacturer Part Number: AP63203WU\-7
- Manufacturer Name: Diodes Incorporated
- Functional Group: 3\.3V Power
- Datasheet URL: https://www\.diodes\.com/assets/Datasheets/AP63200\-AP63201\-AP63203\-AP63205\.pdf
- Part Type: Integrated Circuit
- Role Details: 5V to fixed 3\.3V, 2A rail for ESP32 transient load
- Symbol Style: parametric\-v1
- License: https://creativecommons\.org/licenses/by/4\.0/

**Pins:**
- BST [pin 6]
- EN [pin 2]
- FB [pin 1]
- GND [pin 4]
- SW [pin 5]
- VIN [pin 3]

### U4 — [TPS22919DCKR](https://flux.ai/adrian95/tps22919dckr~ztz.md)

- Manufacturer Name: Texas Instruments
- Manufacturer Part Number: TPS22919DCKR
- Package or Case Code: SOT65P210X110\-6N
- License: https://creativecommons\.org/licenses/by/4\.0/
- Datasheet URL: http://www\.ti\.com/lit/ds/symlink/tps22919\.pdf
- Functional Group: Biometric Camera
- Role Details: Default\-off 5V camera power gate controlled by GPIO14
- Role: Load Switch
- Part Type: Integrated Circuit

**Pins:**
- GND [pin 2]
- IN [pin 1]
- N/C [pin 4]
- ON [pin 3]
- OUT [pin 6]
- QOD [pin 5]

### U5 — [TXU0202DTTR](https://flux.ai/adrian95/txu0202dttr.md)

- Role Details: Dual unidirectional camera UART translation between 3\.3V MCU and 5V module domain
- Role: Level Translator
- Symbol Style: parametric\-v1
- Datasheet URL: https://storage\.googleapis\.com/graviton\-electric\-symbols/document\_assets/user\-uploaded/de71e599f2d1e5de5c36c01794cf1b1ce9aeb04b274fe5794edf663c8217f41b\.pdf
- Manufacturer Name: Texas Instruments
- Functional Group: Biometric Camera
- Part Type: Integrated Circuit
- Manufacturer Part Number: TXU0202DTTR

**Pins:**
- A1 [pin 5]
- A2Y [pin 4]
- B1Y [pin 8]
- B2 [pin 1]
- GND [pin 2]
- OE [pin 6]
- VCCA [pin 3]
- VCCB [pin 7]

*The full schematic, PCB layout, bill of materials, and interactive design are available at [https://flux\.ai/python1977/smart\-face\-recognition\-door\-lock\~nl](https://flux.ai/python1977/smart-face-recognition-door-lock~nl).*

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*Generated from [https://flux\.ai/python1977/smart\-face\-recognition\-door\-lock\~nl](https://flux.ai/python1977/smart-face-recognition-door-lock~nl)*