ESP32-Based Wi-Fi Controlled Fingerprint Access System with Servo Lock
Circuit Documentation
Summary
This document provides a detailed overview of a circuit that includes an ESP32 Wroom Dev Kit, an R307 Fingerprint Sensor, a Servo motor, and power supply components. The ESP32 microcontroller serves as the central control unit, interfacing with the fingerprint sensor and the servo motor. The circuit is powered by a Vcc source and grounded appropriately.
Component List
ESP32 Wroom Dev Kit
- Description: A powerful microcontroller with Wi-Fi and Bluetooth capabilities.
- Pins: 3V3, EN, VP, VN, GPIO 34, GPIO 35, GPIO 32, GPIO 33, GPIO 25, GPIO 26, GPIO 27, GPIO 14, GND, GPIO 13, SD2, SD3, CMD, V5, GPIO 23, GPIO 22, TXD, RXD, GPIO 21, GPIO 19, GPIO 18, GPIO 5, GPIO 17, GPIO 16, GPIO 4, GPIO 0, GPIO 2, GPIO 15, SD1, SD0, CLK
Vcc
- Description: Power supply providing voltage to the circuit.
- Pins: Vcc
R307 Fingerprint Sensor
- Description: A biometric sensor used for fingerprint recognition.
- Pins: VCC, GND, TX, RX, Touch, 3.3V
Servo
- Description: A motor used for precise control of angular position.
- Pins: gnd, vcc, pulse
GND
- Description: Ground connection for the circuit.
- Pins: GND
Wiring Details
ESP32 Wroom Dev Kit
- 3V3 is connected to VCC of the R307 Fingerprint Sensor.
- GND is connected to:
- GND of the GND component.
- gnd of the Servo.
- GND of the R307 Fingerprint Sensor.
- GPIO 18 is connected to pulse of the Servo.
- GPIO 17 is connected to RX of the R307 Fingerprint Sensor.
- GPIO 16 is connected to TX of the R307 Fingerprint Sensor.
Vcc
- Vcc is connected to vcc of the Servo.
R307 Fingerprint Sensor
- VCC is connected to 3V3 of the ESP32 Wroom Dev Kit.
- GND is connected to GND of the ESP32 Wroom Dev Kit.
- TX is connected to GPIO 16 of the ESP32 Wroom Dev Kit.
- RX is connected to GPIO 17 of the ESP32 Wroom Dev Kit.
Servo
- gnd is connected to GND of the ESP32 Wroom Dev Kit.
- vcc is connected to Vcc of the Vcc component.
- pulse is connected to GPIO 18 of the ESP32 Wroom Dev Kit.
GND
- GND is connected to GND of the ESP32 Wroom Dev Kit.
Code
There is no code provided for the microcontrollers in this circuit.
This document provides a comprehensive overview of the circuit, including a summary, component list, wiring details, and code documentation. The ESP32 Wroom Dev Kit serves as the central control unit, interfacing with the R307 Fingerprint Sensor and the Servo motor, with appropriate power and ground connections.