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Team Status Report for 3/8/25

What are the most significant risks that could jeopardize the success of the project? How are these risks being managed? What contingency plans are ready? 

The most significant risks as of now are getting the manufacturing and assembly of the enclosure finished by this week. Our manufacturing timeline had to get pushed back by one week, since we had some road bumps relating to material sourcing and selection last week, so we will put most of our effort this week into laser cutting and assembling everything to get back on track with the original deadline by next week. On the software + electrical sides, we were able to bootload the RPi and get it up and working, and in an effort to support the mechanical side of things more this week, we were able to finish the general layout of our GUI ahead of schedule. We had also originally dedicated some effort to submitting purchasing requests this week, but since we were also able to get that done earlier, we’re able to consolidate more efforts towards manufacturing as well.

Were any changes made to the existing design of the system (requirements, block diagram, system spec, etc)? Why was this change necessary, what costs does the change incur, and how will these costs be mitigated going forward? 

Nothing significant was changed in our design; however, there were some small size changes made to our CAD enclosure – namely, making the dimensions a little smaller in an effort to reduce unused space.

Provide an updated schedule if changes have occurred. This is also the place to put some photos of your progress or to brag about a component you got working. 

A was written by Ashira, B was written by David, and C was written by Anna.

Please write a paragraph or two describing how the product solution you are designing will meet a specified need…

Part A: … with consideration of global factors. Global factors are world-wide contexts and factors, rather than only local ones. They do not necessarily represent geographic concerns. Global factors do not need to concern every single person in the entire world. Rather, these factors affect people outside of Pittsburgh, or those who are not in an academic environment, or those who are not technologically savvy, etc.

Our vending machine’s design considers global factors in supporting user interface that is easy to understand and interact with. Our machine’s UI will be mounted will using a touch screen display, which will allow users to make selections and interact with the machine with steps and effort, an aspect that could be important for users who are not the most tech savvy. We also intend to include symbols and images during the timer & snack selection process in our GUI’s design, which would be important in cases where language or literacy barriers might arise. In addition, our vending machine’s notification system will include features which communicate a finished state through both visual notifications and sound as well, which is something that could be important for users who might be hard of hearing.

Part B: … with consideration of cultural factors. Cultural factors are encompass the set of beliefs, moral values, traditions, language, and laws (or rules of behavior) held in common by a nation, a community, or other defined group of people.

Our vending machine project considers cultural factors by ensuring accessibility, inclusivity, and user-friendly design. We use a touchscreen interface with simple language options to accommodate different users. The machine provides both visual and audio notifications, making it easier for people from different linguistic backgrounds to use. Additionally, we follow safety standards and design rules to meet different community expectations. If placed in a specific location, we can adjust product choices based on cultural preferences or dietary restrictions. By considering these factors, this is a vending machine that respects and serves a diverse group of people.

Part C: … with consideration of environmental factors. Environmental factors are concerned with the environment as it relates to living organisms and natural resources.

VendiBaddie takes environmental factors into account by considering the materials used in its construction, potentially reducing waste. The enclosure has been designed to be made of affordable wood panels which tend to be sturdier and more durable, ensuring longevity and minimizing the need for frequent replacements. Additionally, the machine utilizes a touchscreen interface which will effectively help with reducing the need for physical buttons or extra hardware by making the user interaction more flexible and thus lowering electronic waste in future iterations. While our current design does not prioritize energy efficiency, future improvements could explore the use of recyclable or sustainable materials, as well as energy-efficient components or alternative power sources to enhance sustainability and reduce environmental impact.

 

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Ashira’s Status Report for 3/8/25

What did you personally accomplish this week on the project? Give files or photos that demonstrate your progress. Prove to the reader that you put sufficient effort into the project over the course of the week (12+ hours).

This week, I focused on finalizing all the dimensions of the enclosure in CAD, since there were some spatial changes we wanted to make to the original design – namely, making it more compact & getting rid of unused space. I also spent time reviewing how the laser cutters work and generating all of the .dxf files for our parts to use on the laser cutter, so that hopefully the manufacturing process can go smoothly once we receive our materials. I had initially intended on finishing all the manufacturing this week, since I had planned to source all the enclosure materials from Techspark. However, we realized that the size of the materials they had in stock was not large enough for the design we planned in CAD, so we ended up having to source our materials from McMaster-Carr instead, which pushed back our manufacturing timeline by a week.  Apart from the mechanical things, I also spent a significant amount of time completing the design report; more specifically, I focused mainly on converting the design and use case requirements into a more cohesive description, as well as other aspects from our slides. I also assisted Anna with booting up the RPi.

Is your progress on schedule or behind? If you are behind, what actions will be taken to catch up to the project schedule? 

My progress has fallen behind schedule by a week, since we weren’t able to get our materials and begin manufacturing on time. This week, I was supposed to focus solely on assembly, but because of the pushback, I will be focusing on splitting my time between finishing manufacturing and assembly. I anticipate that more of the time will be spent on manufacturing the components, since that manufacturing seems like it will be more error-prone, so I will focus on that part more during the week and then hopefully make a push towards the end of the week/weekend to assemble everything by Sunday next week.

What deliverables do you hope to complete in the next week?

This next week, my main focuses will be manufacturing (laser cutting) and assembling the entire enclosure.

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David’s status report for 3/9/2025

What did you personally accomplish this week on the project? Give files or photos that demonstrate your progress. Prove to the reader that you put sufficient effort into the project over the course of the week (12+ hours).

This week, I worked on assembling the circuitry on the breadboard for the motor control schematic. Unfortunately, I believe I fried a few of the motor drivers due to not adjusting potentiometers correctly. At first, I wasn’t aware that the voltage regulator and motor drivers had potentiometers so that was a big mistake of mine. I also wrote the code for the motor control. I am currently running into an issue where the motor turns as expected when the program is running, but it also rotates when there is no program running. I am trying to debug that.

Additionally, I also helped out with researching ways to setup the SSH system for Raspberry Pi and the touchscreen with Anna and Ashira (this was the week prior to spring break).

Is your progress on schedule or behind? If you are behind, what actions will be taken to catch up to the project schedule? 

I think my progress is slightly ahead of schedule, due to the fact that I was able to dedicate more time to work on the project over spring break since I had no other commitments. I am running into debugging issues (which should be expected for embedded systems related work) so I need to be able to fix those in order to remain on schedule.

What deliverables do you hope to complete in the next week?

This next week, my main focus is debugging the motor issue mentioned above where it moves as soon as power is turned on and no program is controlling it. I also plan to add more than 1 motor to the breadboard (hopefully all 6 required for our vending machine). Additionally, we as a team plan on manufacturing the structure of the vending machine (laser cutting the material).

 

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Anna’s Status Report for 3/8/25

What did you personally accomplish this week on the project? Give files or photos that demonstrate your progress. Prove to the reader that you put sufficient effort into the project over the course of the week (12+ hours).

This week, I dedicated a significant amount of time to writing our Design Review Report, as this was our primary objective. Additionally, I began researching the installation process for the OS Imager on our RPi. I spent my time watching tutorials, and working to enable SSH to streamline our development process since none of us have had prior experience with it. I installed the OS on the micro SD card, edited the service settings (for SSH) of the RPi, found its MAC address so as to register to CMU-DEVICE, registered the device, and configured WEP file and SSH onto the RPi. Although it took longer than expected because I didn’t realize that a monitor was needed, we were able to successfully log into the RPi via SSH. Besides this, I also finalized the coding for the general layout of our GUI touchscreen, including its corresponding functionality. You can find the completed work here.

Is your progress on schedule or behind? If you are behind, what actions will be taken to catch up to the project schedule? 

My progress is well ahead of schedule. However, we have fallen behind on the laser cutting of the enclosure because the material we initially wanted was unavailable at TechSpark, so we had to order it last week. Unfortunately, it did not arrive before spring break, causing a delay. To help catch up, I finished my main task for the project, prioritizing laser cutting as soon as the material arrives.

What deliverables do you hope to complete in the next week?

After spring break, I plan to meet with my team to laser cut the enclosure and begin testing the components to ensure everything functions as expected.

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Ashira’s Status Report for 2/22/25

What did you personally accomplish this week on the project? Give files or photos that demonstrate your progress. Prove to the reader that you put sufficient effort into the project over the course of the week (12+ hours).

This week, I focused on finishing up the design review slides and preparing for the design review presentation, since I was the designated presenter for our group this week. I helped out mostly on restructuring the use case and design requirements to make sure they were more tightly coupled and working on my presentation skills. I also helped out with finalizing our BOM and submitting purchase orders, since getting all our purchase orders in was our group’s main goal for this week. I also worked on finishing up the CAD for the enclosure, which mainly included finalizing all the dimensions and spacings so that we’re hopefully able to start and finish manufacturing everything next week.

Is your progress on schedule or behind? If you are behind, what actions will be taken to catch up to the project schedule? 

I’d say that my progress is on schedule with our original Gantt chart we made. According to that schedule, I was supposed to finish up the CAD this week and manufacture everything next week, and these tasks line up with what I did last week and what I’m planning to do this upcoming week. 

What deliverables do you hope to complete in the next week?

This next week, my main focuses will be manufacturing (laser cutting) and assembling the entire enclosure, as well as working on completing the design review report.

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David’s Status Report For 2/23/2025

What did you personally accomplish this week on the project? Give files or photos that demonstrate your progress. Prove to the reader that you put sufficient effort into the project over the course of the week (12+ hours).

This week, we as a team finalized the Design Review slideshow for the presentation. We also got together to finalize our Bill Of Materials and send out our requests. This week, I also worked on verifying some of the circuit schematics that I came up with by looking online for similar projects or projects with the same components. It was important that I try to ensure there are no obvious mistakes in what I did since most components were too expensive to order backups. I also looked into writing and coming up with code for the motor control part of the system for the Raspberry Pi. I read up on how to use the GPIO pins in the Raspberry Pi since I’m not that familiar with it.

Is your progress on schedule or behind? If you are behind, what actions will be taken to catch up to the project schedule? 

I think my progress is a little ahead of schedule since I had planned out the speaker connections and proximity sensor connections the week before, so I was more focused on trying to rethink and improve my schematic ideas. 

What deliverables do you hope to complete in the next week?

For this coming week, we hope to complete our design report. Also, I would like to help out Ashira with the manufacturing/laser cutting aspect of the structure. For my own personal tasks, I’d like to have more complete code for the motor control.

 

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Anna’s Status Report for 2/22/25

What did you personally accomplish this week on the project? Give files or photos that demonstrate your progress. Prove to the reader that you put sufficient effort into the project over the course of the week (12+ hours).

This week, I finalized the design review slides and integrated feedback we received from the team. Additionally, I assisted in finalizing our Bill of Materials and submitting purchase orders, which was one of our group’s primary objectives for the week. I also began the Design Review Report, extracting the template from Canvas, making some changes to it, and sharing it with Ashira and David via Overleaf Editor. On the development side, I worked on the screens, specifically implementing and enhancing the timer screen, improving its design, and adding the necessary functionality. Project repository: Vendibaddie GitHub.

Is your progress on schedule or behind? If you are behind, what actions will be taken to catch up to the project schedule? 

I’d say that my progress is on schedule with the Gantt chart we made.

What deliverables do you hope to complete in the next week?

Next week, I plan to complete the design review report and implement the study session ended/item dispensed screen (frontend) as well as help Ashira with the laser cutting for the enclosure.

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Team’s Status Report for 2/22/25

What are the most significant risks that could jeopardize the success of the project? How are these risks being managed? What contingency plans are ready? 

Currently, there are no major risks, as components are arriving on schedule. However, with spring break approaching and our schedules becoming busier, we are hoping to stay in progress. We will be trying to get as much done as we can during class time as it is ensured everyone is available.

Were any changes made to the existing design of the system (requirements, block diagram, system spec, etc)? Why was this change necessary, what costs does the change incur, and how will these costs be mitigated going forward? 

Since the last status report, no changes have been made to the system design.

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David’s Status Report for 2/15/2025

What did you personally accomplish this week on the project? Give files or photos that demonstrate your progress. Prove to the reader that you put sufficient
effort into the project over the course of the week (12+ hours).

This week, I mainly researched how to interface all the peripherals with the Raspberry Pi. The peripherals include motors, LED, speaker, proximity sensor, and touchscreen. My focus was on the motors and how they are powered by a source and controlled by the Raspberry Pi. The motors will be powered separately from the Raspberry Pi source. Also, I worked on completing the motor control schematic. 

Additionally, we as a team researched and finalized our bill of materials. I helped with finding some of the exact items for the peripherals on external websites like Amazon and logged them on our spreadsheet

Is your progress on schedule or behind? If you are behind, what actions will be
taken to catch up to the project schedule?

I believe that my progress is a little ahead of schedule. I have a rough draft of my circuit diagram already with all the peripherals, I just need to do some more research to ensure there are no obvious shortcomings with it. 

What deliverables do you hope to complete in the next week?

I hope in the next week that I am able to research options for motor control code and make some progress with that. I also would like to look more into the I2S speaker bonnet that we plan to use, and make sure all of my signals are connected correctly. 

 

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Ashira’s Status Report for 2/15/25

What did you personally accomplish this week on the project? Give files or photos that demonstrate your progress. Prove to the reader that you put sufficient effort into the project over the course of the week (12+ hours). 

This week, I focused on helping generate our bill of materials, CAD up our entire design in Solidworks, and create our design presentation. 

We realized last week that it was in our best interest to finalize our design implementation and features earlier than later, so we made the goal of trying to compile our entire bill of materials by the end of this week. I helped out with picking components for the structural build, as well as speccing out the motors/motor drivers, speaker, proximity sensor, and power supplies, and deciding where to source them from. We have all our components picked out, but we need to figure out extra quantities + shipping costs and everything before we can start submitting purchase requests. 

I also focused on getting the CAD design for our vending machine enclosure finished. In the original Gantt chart, I had initially given myself two weeks to do this, but I felt that it would be safer if I finished a little earlier to give up more time with manufacturing + assembly in case something went wrong. I got Solidworks working and finalized most of the spacing + dimensions, as shown in the picture below, in a way that conformed to the requirements we had set (but also tweaked a little for the design review). I still have to add some small things like slits in the walls to help with joining pieces together during assembly. Depending on the feedback we get from the design review, I might also change some stuff, but overall, I have a fair amount of confidence that we might be able to start manufacturing next week. 

I also helped out with creating our design presentation this week. I spent some time redefining the use case and design requirements to reference each other a little better, since we got a lot of feedback on that from our proposal presentation. 

Is your progress on schedule or behind? If you are behind, what actions will be taken to catch up to the project schedule? 

My progress is pretty on task with the Gantt chart we created, if not a little ahead, since I was able to get most of the CAD finished earlier than I expected. 

What deliverables do you hope to complete in the next week?

During this week, I’m going to focus on finalizing all the CAD + structural dimensions and hopefully begin laser cutting everything, since we’re planning on sourcing most of our enclosure material from Techspark. I’m also going to plan on helping out with getting our BOM finalized and begin submitting our purchase orders. Hopefully both of these things will be finished by the end of this week. I might also spend some time focusing on practicing my presentation, since I will be presenting the design review.