This is a sensor-driven ESP32 system that measures distance, reads GPS location, triggers a camera only when a pothole-like depth event is detected, sends the payload over WiFi, and displays the result on a backend/dashboard flow.

• US1 is used to measure distance/depth.
• The main controller U1 sends a trigger pulse on GPIO14 to US1.
• US1 returns an ECHO pulse whose width represents the measured distance.
• Because the sensor echo is a 5 V signal and the ESP32 input is 3.3 V logic, the echo line is reduced through the divider made by R5 and R6 before going into GPIO13 of U1.

• U2 provides latitude and longitude.
• Its UART TX goes to GPIO16 of U1, so the ESP32 receives NMEA GPS data.
• Its UART RX is connected to GPIO17 of U1, allowing optional commands/configuration.

• U3 acts as the image capture subsystem.
• U1 uses GPIO4 as the camera trigger output.
• That trigger is wired to IO13 of U3.
• Serial image/control communication is shared through the UART0 pair:
  • Main ESP32 TX -> camera RX
  • Main ESP32 RX package data -> send over WiFi**

1. The backend validates the payload format.
2. The image is processed by the detection pipeline.
3. Severity is determined by combining image inference and measured depth.
4. The processed result is emitted to the dashboard in real time.

• checking whether the uploaded data is valid
• analyzing the image
• combining image result with depth result
• pushing the final event to the frontend

• the pothole location on the map
• the captured/annotated image
• the severity result
• live updates as new events arrive

• US1
• U3
• input of the regulator U5

• U1
• U2
• logic side of U4

• R1 and R2 are the CC pull-down resistors for the USB-C power input setup.
• This allows the connector to behave as a power sink and receive 5 V from USB-C.

• U4 provides USB-to-UART conversion.
• Its TX/RX lines are connected to the UART0 lines of U1.
• SW1 and SW2 support manual EN/reset and BOOT control.
• R3 and R4 hold EN and BOOT in their default states.

• programming
• serial debug
• boot/reset control

1. USB-C power enters through J1.
2. U5 creates 3.3 V for the controller side.
3. U1 runs the loop.
4. It triggers US1 on GPIO14.
5. Echo returns through divider R5 and R6 into GPIO13.
6. U1 reads GPS UART data from U2 on GPIO16/17.
7. If depth crosses the event threshold, U1 sends a trigger on GPIO4 to U3.
8. U3 returns image data over the UART link.
9. U1 bundles:
   • depth
   • GPS coordinates
   • image
10. The packet is sent over WiFi to the backend.
11. Backend validates, analyzes, classifies, and publishes the result.
12. Dashboard displays pothole location, image, and severity.

• a block diagram
• a presentation-ready explanation
• or a pin-by-pin working table.