Finish some basic functions of the User Interface. User can add or deduct the number of items from the first page, and click submit to save the data in the local database (which Zehong’s algorithm will read and calculate the optimal path). The second page is currently a dummy, to demo that the User Interface can jumps to the second page after clicking the submit button. The display of current & next item and the planned path will be implemented…
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…
Done with the basic layout of the first page of user interface with 6 items. It can now add or minus the number of items with the buttons. I will be working on adding an input box to enter the number of items and implement the Submit button’s function (save the item list in the database) for the next step.
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…
Looked into how the user interface would communicate with the Raspberry Pi. Studied the python interface web socket (https://websockets.readthedocs.io/en/stable/intro.html). Decided to keep the user interface local on the Raspberry Pi, and have it displayed to user through a touch screen (Pi Foundation Display – 7” touchscreen). Researched the rangefinder and load sensor. Decided on load cell amplifier hx711 and ultrasonic module hc-sr04 in the end. Looked into how the hardwares listed above could be connected to the Raspberry Pi. Added the…
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…
After speaking with Jiaqi (TA), we got a better understanding of how the Raspberry Pi would communicate with the User’s device. He told us to look into websocket (https://websockets.readthedocs.io/en/stable/intro.html). It can establish an asynchronous connection between the system that the webapp is on and the Raspberry Pi. It is easy to use with templates provided. He suggests that we can work towards an user interface with an lcd display (https://www.adafruit.com/product/2718) for MVP, which is easier to implement and does not…
We have found 2 separate iRobot Create API python wrappers that we want to test on the Roomba in order to verify that all of the listed functions work as intended. The first API that we found is: https://github.com/simondlevy/BreezyCreate2 . And the second is: https://bitbucket.org/lemoneer/irobot/src/default/ The second API claims to provide all of the functions from the original iRobot Create API (linked below) and is the one we will choose if it truly has all of the functions implemented. Otherwise,…