# YYYY-MM-DD — Challenge title
- Date and session:
- Challenge and measurable success criterion:
- Hypothesis and predicted result:
- Design sketch and alternatives:
- Equipment, firmware, code commit and units:
- Method and controlled variables:
- Raw measurements: link CSV; retain every trial
- Plots: axes, units, captions and data source
- Observations: what was measured or seen
- Interpretation: what you think it means
- Error and uncertainty: resolution, bias, variation, limitations
- Conclusion: supported, contradicted or inconclusive
- Next steps: one testable change
- Sources and AI assistance: what was used and verified