1. Never disassemble a working robot.
2. If it works the first time, you’re testing it wrong.
3. When in doubt, lubricate.
4. Never underestimate the estimation problem.
5. If specs for a part are listed differently in two places, they’re both wrong.
6. Glue, tape, and zip-ties are not engineering solutions (though they might work in a pinch).
7. Do not leave lithium polymer batteries charging unattended.
8. Always have a complete CAD model, including screws and fasteners, before constructing your robot.
9. Avoid using slip rings if at all possible.
10. Always check polarity before plugging a component into a power source.