During the last sprint it should be all about making your product as exciting as possible. Making sure it looks the best it can with all the bells and whistles. Add final touches, optimise performance, and create a smooth, professional experience. Focus on engagement, consistency, and user satisfaction.
You will need to show evidence of your process. You can do this a variety of ways:
A overview each week
After completing a task in your project management
Key moments
Use bullet points, screen captures, gifs, images, written info to show this evidence.
*** We do not need every single detail - just key points and a quick summary. ***
Get into Trello (or whatever planning tool you are using) and break this sprint down to easy manageable tasks. You should have some sort of functional outcome that looks pretty reasonable so this focus is on making it awesome.
At the end of 4 weeks you should have something that can be trialled with end users and is pretty much ready to be launched. This is the final trial and feedback session and hopefully there will be only minor tweaks if nothing.
Below are some examples to help you get started.
Production of the "Golden Unit" (Final functional pre-production prototype).
Finalized manufacturing data packages (Gerbers, BOMs) and firmware documentation.
Implementation of final EMC protection, thermal management, and component obsolescence checks.
Generate 3D PCBA visualizations and verify mechanical fit within the enclosure (ECAD/MCAD integration).
Create technical diagrams (System Block Diagrams, exploded assembly views, wiring harnesses).
Review for regulatory compliance (CE/FCC), RoHS standards, and power efficiency.
Standardize schematics, comment firmware code, and finalize the Bill of Materials (BOM).
Conduct final "Bring-up" testing and validation with intended loads/inputs.
Manufacturability: Ensuring components are sourceable and pick-and-place ready.
Design Justification: Clearly defining component choices (e.g., why a specific MCU or Sensor was chosen).
Data Integrity: Clean signal paths, legible silkscreen layers, and organized version control.
Hardware and Firmware integration is stable and bug-free.
Manufacturing output files (Gerbers, Drill files, Pick & Place) are generated and verified.
Power budget and thermal dissipation requirements are met.
Documentation clearly defines Input/Output (I/O) specifications and assembly procedures.
Design Rule Check (DRC) and Electrical Rule Check (ERC) errors are resolved.
Congratulations!
You have successfully engineered a functional prototype that you can be proud of. The final validation and technical documentation are the last critical parts of your assessment. Below are a few ideas for professional presentation. Why not upload your 3D assembly or PCB design to a web viewer (like an interactive BOM or CAD share link)? Or create a demonstration video proving the device works under load (e.g., showing actuator movement or sensor response)? Or how about a high-fidelity ECAD render of the bare circuit board to include in your Engineering Notebook?
Complete the "Project Finished" section of your development log now.