Risk Analysis

The Risk Analysis is here.

	Description	Prob	Imp	PxI	Response A	Response B
RI1	Communication problem: delay in sending camera images to the student.	2	4	8	Decreased resolution of the uploaded image. Only sends the camera image useful for the task.	Sending a video at the end of the execution instead of the image in real time.
RI2	Pincers not strong enough	2	4	8	include wheels in the boxes.	Redo the task so that it is possible to complete without holding the box, remove the related tasks.
RI3	Pincers fail to grab item	1	4	4	Use a different, simpler pincer format.
RI4	Robot ESP32 is overloaded	3	2	6	Reduce robot camera capture frequency and resolution.	Move baterry level processing to Arduino
RI5	Too low visibility for the RGB LEDs	3	2	6	Multiple LEDs with surface lighting.	Use the student monitor to signal colors. Send arena color to robot using wifi connection
RI6	Buttons fail to press	3	2	6	Use infrared sensor to simulate a button	Use distance sensor to simulate a button
RI7	Robot needs more space for maneuver in the maze	2	3	6	Increase the spacing between maze walls, redesign and reduce the complexity of the maze.
RI8	The PVC camera support doesn't work	3	2	6	Use tripod with PVC pipe extender	Fix the cameras in the ceiling
RI9	Not having enough space for the color sensor on the underside of the robot	2	2	4	Use a 3d printed platform	replace with an infrared and use black and white detection only
RI10	Battery duration too short.	2	2	4	Extra batteries. Set a maximum time for tasks.	Set a minimum time between the execution of two tasks
RI11	Induction charger not charging enough	2	2	4	Make a physical contact charging connector using magnets for alignment	Remove the automatic charger
RI12	Not aligning the robot correctly with the charger	2	2	4	Include floor markings to read with the color sensor
RI13	Problems in not separating the power supply between motors and controllers	2	2	4	split the supplies, only charge motors supply
RI14	DC motors insufficient power	2	2	4	Uppower the motors, rework power supply
RI15	Problems aligning with the grid	2	2	4	Use a PID control	Use steep motor to control the robot
RI16	Someone steps on the arena and breaks something	2	2	4	Warnings around the arena, fix it
RI17	Robot Arduino processing overload	1	3	3	Use a second arduino, or substitute the Arduino for a RPi	Move processing to the arena PC
RI18	Problem with coordination, communication, or other problems with multiple robot processors	2	3	6	Use a single RPi on the robot
RI19	Problems to movement the box	1	3	3	include a servo motor to lift the claw
RI20	Robot detection error	1	3	3	use a bigger tag or a different tag model
RI21	Box detection error	1	3	3	Include a structure uses a structure on top of the box to use a larger tag. Use color detection.	Removes task accomplished detection in boxes tasks
RI22	Robot escapes bounds	3	1	3	include a margin between the camera boundary and the walls. Send a stop signal to the robot if it is in a wrong position.	Someone has to manually put the robot back in the starting position and fix any damaged walls.
RI23	Battery measurement inaccuracy	1	2	2	Use an INA219 to read the level	use runtime to define charging need
RI24	ESP32-cam and arduino communicantio problems	2	1	2	Use i2c protocol
RI25	The polystyrene walls fails	2	1	2	Draw maze in the arena's floor, use walls only in colored ends.
RI26	Local pc unable to handle all server requests	1	2	2	Use a scalable cloud based serve (Azure or AWS)
RI27	Misaligned center of mass	2	1	2	move components
RI28	Electronic Compoponent failure	2	2	4	Preventive: Buy spares for the ones whith long delivieries. Check the sale in stores close to UTFPR.	Buy a new componnent.
RI29	Loss of a team member permanently	2	3	6	remove the tasks with box, the robot's claw and related requirements. Soft-FR10 Robot-FR03, 3.1, 3.2, 3.3 Arena-FR07, 07.1, 07.1
RI30	Loss of two team member permanently	2	4	8	Same as RI29, the robot charger and completeness review. Robot-FR07, 07.1, 07.2, 07.3, 07.4, 07.5, 07.6 Arena-FR08
RI31	Loss of three team member permanently	2	5	10	Same as RI30 and the teacher webapp. Soft-FR02, 02.1, 02.2, 02.3, 02.4
RI32	Temporary single team member unavailable	1	3	3	Redistribute on going tasks between the other members
RI33	Temporary multiple team members unavailable	3	3	9	Redistribute on going tasks between the other members
RI34	Blocks created for the block programming language not being enought to complete the proposed tasks	4	1	4	Create more Blocks, so the user can solve all tasks