![\"\"](\"https:\/\/courses.ideate.cmu.edu\/60-223\/f2021\/work\/wp-content\/uploads\/2021\/12\/Xnip2021-12-10_15-26-23.jpg\")
Testing half-built table<\/p><\/div>\n
![\"\"](\"https:\/\/courses.ideate.cmu.edu\/60-223\/f2021\/work\/wp-content\/uploads\/2021\/12\/Screenshot-2021-12-10-154901.png\")
<\/p>\n
Our actual schedule was much more compressed. Immediately our material order was delayed because we had some trouble reaching our client for his oven heights, which would determine the actuators we needed. Following this trend many other dates were compressed because of our lack of access the woodshop during the thanksgiving break. Our design, electrical, and printing stayed to schedule. Our Assembly took longer than expected, but our very generous timeframe made it work.<\/p>\n
Conclusion<\/strong><\/p>\nThe final critique allowed us to perceive our project from outside our many hours with it. An objective and critical eye gave us several new insights and even inspirations for the concept. The range of advice was broad, from changing the openness of the latching hook, to adding remote movement to the table. <\/span>The most inspiring comment was simply \u201cThe structure can have many other purposes,…\u201d This was representative of several comments which focused on the versatility of a motorized and mobile work surface. The comments inspired us to consider the optimizations possible to expand the reach of the device like range increases or wheelchair connection points.\u00a0<\/span><\/p>\nOther comments helped us to improve the main focus of the device, use with an oven. One party suggested it \u201cMay need \u2018ramp\u2019 to help sliding pan.\u201d This suggestion was a very do-able way to greatly reduce the force required to overcome the bump of the servo hook when sliding a dish in. Another piece of feedback addressed the polish of the table, it simply cited \u201cCable management.\u201d This was a very fair critique and a component that can be fixed with better sleeving and more attachment points and ultimately deliver a safer product, an essential feature for a person with limited mobility.\u00a0<\/span>Two final pieces of critique coincided, and present a great finishing addition to the table. An observer noted that \u201cThe wood may be a fire hazard.\u201d and \u201cCleaning issue. Maybe sealing it would help.\u201d Dave also noted that he appreciated the wood surface as he liked to stain his wood furniture the same tones. Though we made sure the wood could safely withstand oven temperatures, as a final step, sealing and staining the table Dave\u2019s preferred tone would make it extra safe and special for him.<\/span><\/p>\nOur project workflow was fragmented into in-person and remote work\/interview sessions. The experience was unique in that we could both conveniently contact each other and still meet up\u00a0 to more accurately share ideas and unite components, especially physical components. The team had flexible schedules for independent and group work which allowed us to put the work in whenever we needed it. The connection with our client was not so concrete and did create some disconnects. The remote interview with our client, Dave, allowed us to view the environment the device was meant for and gave us insights that meetings at Ideate could never have. However, by not sharing the same space we did miss one of Dave\u2019s main hurdles and objectives with this project until he visited in person to see our prototype, namely the need for conveying dishes from rack height to counter height. In retrospect, sharing a list of fundamental functions live with Dave may have helped us catch the divide between his needs and our ideas earlier.<\/span><\/p>\nThe experience with Dave was an opportunity to re-analyze our built environments in detail. By considering his needs in our product design we dove into his challenges and focused on ideas that are not often highlighted. An example of these new insights came from his description of dealing with pneumatic doors. The need to operate doors that required significant force to operate shows that poorly designed force thresholds on everyday devices can be very damaging hurdles for some people. We quickly noticed how this extended to our own experiences with one very stiff door at the entrance of Hunt. A better built environment, for example, by way of a door with adaptive closing force, is essential for many individuals and generally a more person focused design. A flaw in our approach was the gap of understanding we had around Dave\u2019s abilities. Though not always the most comfortable topic, it is an essential one when building a supporting device. Next time, I think one of the central focuses of the initial interview should be building a meaningful understanding of the relevant disability.<\/span><\/p>\nThroughout this project we expanded our experience with many subjects. Each member exercised their skill with design, physical fabrication, product sourcing, communication, electronics, debugging, and many more subjects. The most surprising of these was the exercise in empathy, to make useful and fitting devices for the people that need them. We learned about the practical limits of armature level manufacturing and how to develop ideas that are people-centric. The second time around we would not rush into the prototyping stage so brashly in order to assure our efforts were well spent, and we would make team hats.<\/span><\/p>\nTechnical Details<\/strong><\/p>\n\n- Schematic and Block Diagram<\/li>\n<\/ul>\n
![\"\"](\"https:\/\/courses.ideate.cmu.edu\/60-223\/f2021\/work\/wp-content\/uploads\/2021\/12\/Untitled-Diagram.jpg\")
<\/p>\n
\n- Code<\/li>\n<\/ul>\n
\/*\r\n * Project Title: Oven Assit Device\r\n * Team Kiwi Pies\r\n * Bella, Emily, Noel\r\n * \r\n * Description:\r\n * The Arduino takes in the value of four buttons\r\n * Two buttons for open\/close hook\r\n * Two buttons for raise\/lower table\r\n * And functions accordingly\r\n * \r\n * Pin Mapping\r\n * \r\n * A0 OUTPUT servo pin\r\n * A1 INPUT button for raise table\r\n * A2 INPUT button for lower table\r\n * A4 INPUT button for open servo\r\n * A5 INPUT button for close servo\r\n * \r\n * 4 OUTPUT IN_A pin for motor driver 1\r\n * 5 OUTPUT IN_B pin for motor driver 1\r\n * 3 OUTPUT PWM pin for motor driver 1\r\n * \r\n * 9 OUTPUT IN_A pin for motor driver 2\r\n * 10 OUTPUT IN_B pin for motor dirver 2\r\n * 11 OUTPUT PWM pin for motor driver 2\r\n * \r\n *\/\r\n\r\n#include <Servo.h>\r\nServo servo1;\r\n\r\nconst int motorA = 4;\r\nconst int motorB = 5;\r\nconst int motorP = 3;\r\n\r\nconst int motorA_2 = 9;\r\nconst int motorB_2 = 10;\r\nconst int motorP_2 = 11;\r\n\r\nbool motorAvalue = HIGH;\r\nbool motorBvalue = LOW;\r\n\r\nconst int b1 = A1;\r\nconst int b2 = A2;\r\n\r\nbool button1 = LOW;\r\nbool button2 = LOW;\r\n\r\nconst int SERVOPIN = A0;\r\nconst int OPENPIN = A4;\r\nconst int CLOSEPIN = A5;\r\n\r\nvoid setup() {\r\n pinMode(motorA, OUTPUT);\r\n pinMode(motorB, OUTPUT);\r\n pinMode(motorP, OUTPUT);\r\n \r\n pinMode(motorA_2, OUTPUT);\r\n pinMode(motorB_2, OUTPUT);\r\n pinMode(motorP_2, OUTPUT);\r\n \r\n pinMode(b1,INPUT);\r\n pinMode(b2,INPUT);\r\n\r\n pinMode(OPENPIN, INPUT);\r\n pinMode(CLOSEPIN, INPUT);\r\n pinMode(SERVOPIN, OUTPUT);\r\n \r\n servo1.attach(SERVOPIN);\r\n servo1.write(140); \/\/ servo reset to neutral position\r\n}\r\n\r\nvoid loop() {\r\n button1 = digitalRead(b1);\r\n button2 = digitalRead(b2);\r\n \r\n motorAvalue = button1;\r\n motorBvalue = button2;\r\n\r\n if (button1 == HIGH || button2 == HIGH){\r\n analogWrite(motorP, 120);\r\n analogWrite(motorP_2, 120);\r\n } else {\r\n analogWrite(motorP, 0);\r\n analogWrite(motorP_2, 0);\r\n }\r\n \r\n digitalWrite(motorA, motorAvalue);\r\n digitalWrite(motorB, motorBvalue);\r\n\r\n digitalWrite(motorA_2, motorAvalue);\r\n digitalWrite(motorB_2, motorBvalue);\r\n \r\n int hookOpen = digitalRead(OPENPIN);\r\n int hookClose = digitalRead(CLOSEPIN);\r\n\r\n if (hookOpen == HIGH) {\r\n servo1.write(60);\r\n }\r\n\r\n if (hookClose == HIGH) {\r\n servo1.write(140);\r\n }\r\n \r\n}<\/pre>\n\n- Design Files<\/li>\n<\/ul>\n
![\"\"](\"https:\/\/courses.ideate.cmu.edu\/60-223\/f2021\/work\/wp-content\/uploads\/2021\/12\/ControlerDesigns.jpg\")
Design files for the controls<\/p><\/div>\n
![\"\"](\"https:\/\/courses.ideate.cmu.edu\/60-223\/f2021\/work\/wp-content\/uploads\/2021\/12\/Screenshot-2021-12-10-160428.png\")
3D model of tabletop attachment piece<\/p><\/div>\n
![\"\"](\"https:\/\/courses.ideate.cmu.edu\/60-223\/f2021\/work\/wp-content\/uploads\/2021\/12\/34view.jpg\")
Design file for the overall product<\/p><\/div>\n
![\"\"](\"https:\/\/courses.ideate.cmu.edu\/60-223\/f2021\/work\/wp-content\/uploads\/2021\/12\/DSC0013-scaled.jpg\")
Kiwi Pies Squad pic<\/p><\/div>\n","protected":false},"excerpt":{"rendered":"
Throughout this course we develop physical and digital creation skills and put them to the test improving people’s quality of life. This team project is an assistive device…<\/p>\n","protected":false},"author":200,"featured_media":14710,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[100,159],"tags":[],"_links":{"self":[{"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/f2021\/work\/wp-json\/wp\/v2\/posts\/14691"}],"collection":[{"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/f2021\/work\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/f2021\/work\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/f2021\/work\/wp-json\/wp\/v2\/users\/200"}],"replies":[{"embeddable":true,"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/f2021\/work\/wp-json\/wp\/v2\/comments?post=14691"}],"version-history":[{"count":28,"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/f2021\/work\/wp-json\/wp\/v2\/posts\/14691\/revisions"}],"predecessor-version":[{"id":14878,"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/f2021\/work\/wp-json\/wp\/v2\/posts\/14691\/revisions\/14878"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/f2021\/work\/wp-json\/wp\/v2\/media\/14710"}],"wp:attachment":[{"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/f2021\/work\/wp-json\/wp\/v2\/media?parent=14691"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/f2021\/work\/wp-json\/wp\/v2\/categories?post=14691"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/courses.ideate.cmu.edu\/60-223\/f2021\/work\/wp-json\/wp\/v2\/tags?post=14691"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
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\n