Challenges

• Try creating a block diagram for a different robot, thinking about inputs, outputs, and controllers. Consider what chassis, power, and parts it needs. Use online vendors to find suitable parts.
• Are the Raspberry Pi 4B and 3A+ still the most recent versions? Would you use another model, and what would be the trade-offs?
• For your alternative robot, consider whether there is a suitable combination of Raspberry Pi HATs that fits your design. Use resources such as https://pinout.xyz to check that their pin usage is compatible.
• What power systems might be suitable for the Raspberry Pi and the output devices in your new design?
• Consider how the new robot parts will fit together, Make a test-fitting sketch for your new robot parts, checking that they fit using part dimensions.