FIRST WHEELED ROBOT — BUILD AND TEST LOG
Yenra | 2026-09-07 | https://yenra.com/how-to-build-a-robot/

Purpose: verify a short, supervised motion project one subsystem at a time.
Platform: Pololu 3pi+ 32U4 Turtle Edition. Use the matching official manual:
https://www.pololu.com/docs/0J83/all
Program: https://yenra.com/how-to-build-a-robot/FirstRobot.ino
Other robots require their own hardware and software checks.

SETUP RECORD
Date / observer:
Exact kit and display edition:
Assembly completed or factory assembled:
IDE / board package / library versions:
Battery type and condition:
Firmware file and changes from FirstRobot.ino:
Motor direction corrections, if any:

ACCEPTANCE CHECKS (record Pass / Fail / Not tested and evidence)
1. Mechanical assembly and polarity checked against the manual:
2. Wheels and bumper flaps clear and free of binding:
3. Changed Blink timing uploaded successfully:
4. Supported chassis, wheels clear: remains stopped at startup:
5. A press-and-release starts both wheels in the forward direction:
6. Run ends at three seconds; remains stopped afterward:
7. Another A press-and-release stops a run early:
8. Left bumper ends a supported run:
9. Right bumper ends a supported run:
10. Releasing a bumper leaves the robot stopped:

FLOOR TEST
Use a supervised clear level floor away from edges. Disconnect USB.
Keep wheels clear of hands, hair and loose items. Know the power switch.
The example has no cliff detection, obstacle avoidance or safety-rated stop.
Resolve failed supported tests before a floor run.

Trial | Surface | Duration (s) | Distance (cm) | Stop reason | Notes
1     |         |              |               |             |
2     |         |              |               |             |
3     |         |              |               |             |
4     |         |              |               |             |
5     |         |              |               |             |

Calculation: mean distance = sum of distances / number of valid trials.
For equal-duration runs: mean speed = mean distance / run duration.
Report the observed minimum and maximum too. Keep failed runs in the log;
explain any exclusion from a numerical average.
Illustrative data only: 28, 31, 29, 30, 32 cm in 3 s => mean 30 cm,
range 28-32 cm, mean speed 10 cm/s. This is not measured product performance.

What changed before the next five runs:
Prediction:
Observed result:
Unresolved issue and next check:

Code was compile-checked, not physically tested on robot hardware by Yenra.