This week, I focused on developing the physical structure of my final project, the Smart Trap, as it directly affects how the various components integrate and function together. To recap, my project is a Smart Trap that captures images and counts the number of pests caught on a sticky tape. After a certain period, the trap automatically replaces the tape to maintain effectiveness.
Systems diagram
PCBs
For the project, I will use a total of three PCBs. The first PCB will house the Xiao microcontroller and provide connections for the DHT11 sensor, motor driver, and control buttons. Additionally, this board will be connected to an LED to ensure consistent lighting for image capture.
Motor bridge
the motor bridge controls the motor responsible for advancing or replacing the sticky tape. Both components are connected to the main PCB, ensuring coordinated functionality within the system.
Button board
The button board is used to manually control the tape mechanism—rolling the tape when a new roll is installed in the system and unrolling it when the tape is fully used, allowing for easy removal and replacement. Aside from manual operation, the tape is also rolled forward automatically on a weekly schedule.
The MCU board will serve as both the server and the main controller for the camera trap sensor, handling some data processing and communication.
In the server it will have connections to:
- a button board,
- an oled screen
- and a SD card
In the camera trap, the system will be connected to the following components:
- DHT11 sensor
- Motor bridge
- Button board and a
- Led for lightning
Communications
In the past, I encountered significant communication issues between the Xiaos. To resolve this, I integrated antennas, ensuring they are properly connected to the MCUs for better performance.
Energy source
The Smart Trap will be powered by a battery, which will drive the motors. To reduce the voltage for the Xiao, a step-down converter, the DM0014X8, will be used.
Cases
The cases for both the server and the camera trap will be 3D printed.
Camera Trap Roof
[to come]
Camera Trap body
In progress..
This is the side view from left.
This is the side view from right.
Gears and all of that.. The roll is to be inserted through the upper left side, secured with a removable lid for easy access.
And finally here is some of the electronics
Schedule
Link to development page
Have you?
- implemented methods of packaging?
- designed your final project to look like a finished product?
- documented system integration of your final project?
- linked to your system integration documentation from your final project page?