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Author: zehongl

3/29 Team Progress week 7

3/29 Team Progress week 7

This week, we were able to meet a few times to discuss our progress and what we would need to work more on in the following weeks. Zeyi has been continuing to work on the website and creating that interactive portion of our project. A more detailed explanation can be found in Zeyi’s personal weekly update. Zehong has been focusing on creating the algorithm and user test cases to midigate exceptions to the program. A more detailed explanation can be found…

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3/29 Zehong Lin week 7 progress report

3/29 Zehong Lin week 7 progress report

As I briefly described during the Zoom call on This week I worked on Friday 3/27/2020, I worked on designing the algorithm this week. The following is a more detailed report: I first researched more about traveling salesman problem. After research, I feel like it might not be the most accurate representation of the problem at hand. One thing that TSP does not allow is visiting a node more than once, but my algorithm can visit any node any number…

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3/14 + 3/22 Zehong Lin progress report for week of spring break and week after spring break

3/14 + 3/22 Zehong Lin progress report for week of spring break and week after spring break

After consulting one of my MechE friend, we finalized on the idea of mounting a circular wooden platform over the Roomba. We arrived at this design because the top surface of the original Roomba is not smooth and it is hard to attach anything onto it. The wooden platform will be mounted on using 70mm threaded standoffs and serve as a platform for all other electronic components: the raspberry Pi 3, the range sensor, and the load sensor. Having the…

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3/14 + 3/22 Team Update Week 5 + Week 6

3/14 + 3/22 Team Update Week 5 + Week 6

3/14 The week of Spring break, our team mainly wanted to get the physical components ready and begin the initial phase of creating our physical portion of our project. This week would be the transition between the planning and initial setup. We communicated mainly virtually as most of us were not at the same location during spring break. We also began with setting up our sensor testing. We felt it was important to start working on the physical components of…

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3/1 Team Progress Report Week 3

3/1 Team Progress Report Week 3

This week we worked together on finalizing the design of our AutoCart. We first worked creating slides to convey our design during the presentation. After getting feedback, we worked on modifying our design and putting it down in words in a design document. During the process, we also delved deep into the sensor interfaces and Roomba api to make sure as much as possible that there are no compatibility issues.

2/23 Zehong Progress Update Week 2

2/23 Zehong Progress Update Week 2

Researched and understood how to connect the Raspberry Pi to the iRobot Create 2 in order to control the robot using Python API on raspberry Pi. Learned how to make a 5v to 3.3v stepper since the Create 2 Serial Port uses 5V logic-level asynchronous serial communication; but the Raspberry Pi is a 3.3V devices. Updated our Bill of Material to include all the necessary parts for both the connection between Raspberry Pi and iRobot and the stepper. Looked into…

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