Skip to main content

Team Blog #23

By
SSST Blog 4/29/2020

 Progress for this week:

Guideway:

The guideway team has been focused on finishing the y-switch assemblies for the inner and outer loops. The y-switch assembly must be sturdy enough to hold the weight of the pod and easily assemble onto the guideway. The team received good feedback from Dr. Furman for adding a ramp feature to the third rail as shown in Figure 1 below.
Figure 1. Rounded entrance for the bearings attached to the bogie third rail.
Dr. Furman introduced a scenario of a person leaning on the track, the gap between the inner and outer track pieces will cave inward. Corner supports were designed and added to the corners opposite end of the y-switch assemblies as additional support for keeping the guideway rigid as shown in Figure 2. The corner supports will be made from 0.25 inch thick MDF, which can be cut using the laser cutter in the Makerspace.
Figure 2. Corner supports located on opposite end of y-switch. 
In addition, the team is working on simulations showing the bogie traversing the loops and the y-switch is functional. As well as FEA on critical track pieces that may experience excessive forces.

 Controls:
The controls team focused on syncing the iOS application with the Arduino. The iOS app ran into issues with using the keyboard to enter station values that resulted in using a different app to troubleshoot. The team plans to continue troubleshooting to find a solution before the project presentation.

Bogie:
The bogie team has been focused on assembly drawings and drawings of individual parts matching the GD&T standards. The final design for the y-switch has been completed as shown in Figure 3.
Figure 3. Bogie y-switch attached to the servo motor. 
The y-switch will be made out of PLA using the 3D printer at the Superway Design Center. The bearings will be securely fastened using 6-32 shoulder screws. The servo motor will need to rotate 69 degrees for the inner loop and 115 degrees for the outer loop.


 Plans for Next Week:
Next week the team will be rehearsing and preparing for the Senior Project Final Presentation on Friday.

 Written By:
Shane Fatehi

Comments

Post a Comment

Popular posts from this blog

Team Blog #15

By
Progress for this week: Controls Team: To become more familiar with the Pixy Cam several tests were conducted throuhgout the week. After the team decided to switch over to barcodes for the stations the team saw that this method was better. A sheet of the 10 barcodes was then printed out and the team tested how accurate the pixy cam was at ientifying the different codes. The team will is now working on trying to develop a test which will incorporate the arduino along with the other electrical componenets. Figure 1: Barcode recognition by Pixy2 Guideway Team: The guideway team made progress on determining how the track will be supported and what materials we will use to build it. The team setteled on using mdf wood with a thickness of .25". The laser cutter cuts the wood accurately and precisely at the maker space, however, the space is only available during the week days from 10am to 6pm. The supporting stands will use 3ft long zinc threaded rods with nots and washers to ...
Post a Comment
Read more

Team Blog #25

By
SSST Blog 5/13/20 Progress for the week: Since this is essentially the last blog for the 2019/2020 academic year, and the last major thing that was accomplished this week was submitting the report, there is not that much individual subteam work that was completed. Rather, everyone came together to work on the final report throughout the entirety of the last week. The remainder of this blog will be dedicated to showcasing the final results through images of each of the subteams and also of the Small-Scale as a whole. Controls Team  The final design of the controls team was two separate iOS apps, one allowing to connect and to send data to BLEs to activate the master Arduino code and another solely for a pleasant and informative UI experience. Although ultimately a keyboard was not able to be implemented successfully into the BLE testing app, a slider was added so that depending on its position, different 8-bit unsigned integer values (within a range specified in Xcode) can be ...
Post a Comment
Read more

Team Blog #19

By
SSST Blog 3/26/2020 Progress for this week: The Small Scale team met this week to discuss our plan moving forward with our project after the recent changes that are going on. The team decided to continue meeting online via Zoom or Google Hangout to discuss our progress. The meetings will be happening every week. This week we also met as a class with Dr. Furman. We explained our plan with him and explained our schedule that is shown below in figure 1. The schedule shows the main goals of our team for the rest of the semester. Plans for next week Next week is spring break, but the team is still planning to meet to encourage ourselves to meet the deadlines that we set. For controls, the Arduino code will implement the switching mechanism servos. By adding this, the Arduino code will be complete and ready to be used along with the iOS app. The next step for the iOS app is adding a text box that allows the user to type data that can be sent to the BLE. More thing is planned to...
Post a Comment
Read more