Week 16
This is my 16 week at FabAcademy. This week we needed to work on the integration of our final project. The assignment of the week is as follows:
- Design and document the system integration for your final project
Final design and fabrication of the PCB
In order to start with the system integration of my final project, I started working on the redesign of my PCB. Previously I worked in serveral designs but my PCB had the inconvinient that it was designed for having servos fed by 3.3V, whereas due to the relatively heavy task they need to deliver (opening closing methacrylate gates) it is necessary to fed them by 5V. As usual I worked in KiCad and here you can see a summry of the resulting PCB with refined design:
- Schematic of the PCB:
- Design of the PCB:
- Gimp edition prior to machining:
- VCarve programming for machining:
- Resulting PCB:
Summary of the system components
Microcontrtoller: one XIAO ESP32C3 microcontroller.
Inputs: 2 DHT11 moisture and temperature sensors for reading air moisture and temperature within the air layer of the wall element. BH1750 light sensor for dectecting natural sunlight and therefore, deciding energy source (solar or battery)
Outputs: 2 Servos XXXXXXXXXXXX for the opening/closing of the gates, 1 Oled Screen XXXXXXX for monitoring temperature and energy consumption.
Energy supply: 1 solar cell XXXXXXX for, 1 battery XXXXXX, 1 diode XXXXX
Electronics integration: 1 printed box parametrized for electronics integration.
Material necessary for the construction of the fassade element: 2 methacrylate plates of XXX x XXX mm, four 2400x400x28 mm pine (Pinus sylvestris) boards, common wood adhesive.
Integration of all components in the system
Micr
Files for download and replication
Here you can download the files of my final PCB design, including all relevant files (Kicad Schematic, PCB editor and project, Gimp edition and VCarve file): Final_PCB_Design.