Developing and checking the remote control code.

Description of the picture:
We focused on programming the control system so the remote could properly communicate with the robot. After uploading revisions, we tested responses and monitored the hardware closely to confirm that none of our components were damaged. Through repeated trials, we verified that the parts were functioning and that the updated instructions produced the expected behavior.

PLTW Design Process Step:
Evaluate Solution. We were running the system, observing performance, and confirming that both the programming and electronics operated correctly.

Connecting the controller and debugging the system.

Description of the picture:
We worked on pairing the remote with the robot so the controls would communicate correctly. During the process, we discovered that several wires were not functioning as expected, so we carefully traced connections, fixed problem areas, and tested them again. We also made small adjustments to the program to improve how the robot responded to commands.

PLTW Design Process Step:
Test and Evaluate (Troubleshooting). This stage fits because we were checking whether the build and the code worked in real conditions, identifying failures, and improving performance through corrections and retesting.

Rebuilding the chassis and repairing the carrier.

Description of the picture:
We disassembled the two chassis sections and inspected every wire and connection to find hidden issues. After reseating loose plugs, correcting polarity problems, and securing the wiring so nothing could shift during movement, the remote system began responding properly. While examining the structure, we also realized the dog carrier was dirty and the door hinge failed to swing smoothly. I cleaned out debris, realigned the hinge, tightened the mounting points, and reinforced the joint so the door could open and close reliably.

PLTW Design Process Step:

Evaluate Solution. This work focused on determining whether the robot functioned as intended after repairs by running trials, observing results, and confirming reliable operation. 

Rewiring and diagnosing sensor failure.

Description of the picture:
We rewired the robot again in an attempt to make the replacement sensor operate consistently with the rest of the system. After reinstalling both sensors and rerunning the program, one functioned normally while the other began to overheat. To prevent damage, we powered the unit down and documented that a fault still exists in the overheating component.

PLTW Design Process Step:
Evaluate Solution. We tested the updated setup, compared how each sensor performed, and identified that one device still failed under real operating conditions.