November 7, 2025
Embedded Calibration Rig for Actuator QA
Built a compact embedded calibration rig that reduced actuator setup time by 42% and standardized pass/fail logging across revisions.
EmbeddedAutomation/DataTesting/V&VRobotics/Actuation
Quick Specs
- Role
- Systems Integration Lead
- Tools
- Arduino, Python, Load Cell, CSV Telemetry, Fusion 360
- Reading time
- 1 min read
Key metrics
Setup Time
-42%
Throughput
+28%
Repeatability
±1.8%
Context
The team needed a repeatable way to calibrate actuator output before integration. Manual checks were slow and inconsistent between operators.
Requirements & Constraints
- Verify torque output and response consistency in under 3 minutes per unit
- Record pass/fail criteria with machine-readable logs
- Keep hardware compact enough for bench-side use
- Support quick fixture swaps between actuator variants
Approach
The rig pairs a load cell fixture with an embedded controller and a Python logging layer. The controller performs deterministic command sequences while the host app computes summary metrics and flags out-of-range behavior.
Cycle Duration
2m 35s
Per actuator validation sequence
Operator Steps
6 -> 3
Reduced setup interactions
Signal Drift
< 0.7%
Across 30-minute test windows
Testing & Validation
- Repeated 30 calibration runs across three hardware revisions
- Cross-checked load-cell output against reference bench instrument
- Validated logging integrity with checksum and timestamp audits
