Unit Testing:
- Gantry moved up and down 5 times without faults
- Z-axis limit switch homed the gantry reliably
- Pin board stability: spot-checked ~1/3 of pins. All moved freely and stayed seated
- Reset button triggered linear actuators to retract and clear all pins
- Quick user test via Google Form
- Software unit tests: matplotlib visualization
- Not yet tested: rack-and-pinion row (all-retract, all-extend, mixed depths)
Findings:
User Findings:
- Heart: 100% of respondents identified correctly
- House: 100% of respondents identified correctly
- Abraham Lincoln:
– 91% of respondents identified correctly
– Skull, face, or Abraham Lincoln were considered correct answers
– Respondents were asked on a scale of 1 to 10 how similar the images on the right were- Mean: 6.85
- Median: 7
Gantry:
Smooth travel on rails, stop within 1 second of limit switch trigger, flips direction on button press.