Overview of Status of Analysis, Design, Fabrication, Tests, etc.
Testing process of the actual sensors used in final design began
Discovered a method to use sensor data to calculate strike location
Established method to calibrate sensor used to calculate force of strike
All 3D printed parts are completed (CAD and drawings) and ready to be printed
Resin material for 3D printer arrived
First round of PCBs arrived and were tested with sensors to see if there could be any improvements
Analog PCB has some issues, including ground plane continuity and significant noise from amplifiers (could be due to ground plane discontinuity)
Accomplishments from Previous Week
Adhered sensor layout to acrylic plate with epoxy (Kaitlynn)
Calibrated force sensor with impulse hammer using 200 data points from oscilloscope (Kaitlynn)
Obtained data for 4 sensors at 5 different impact locations (Kaitlynn)
Finalized driver handle CAD (Reuben)
Received driver shaft (Reuben)
Ordered driver handle components (Reuben)
Updated CAD drawings in the report (Reuben)
Finalized potting mold CAD (Reuben)
Finalized receiver enclosure CAD (Michelle)
Finished receiver enclosure technical drawings (Michelle)
Established method to calculate location with sensors (Michelle)
Established method of connecting electronic components to the PCB (Chris/Michelle)
Sent all technical for Tom to review (Reuben/Michelle)
Soldered surface mount components to new PCB's (Chris)
Preliminary testing of Analog PCB done on oscilloscope, tested with one PVDF sensor input (Chris/Kaitlynn)
Code for individual digital components completed (Chris)
Preliminary testing of Digital PCB done by confirming continuity in connections (Chris)
Goals for Next Week (list names after each item). Use specific and measurable objectives.
Send STL files for printing (Reuben)
Begin handle assembly (Reuben/Chris)
Purchase Handle hardware (Reuben)
Print and post-process all 3D printed parts (Michelle)
Work on sending Arduino Mega data to MATLAB and MATLAB's display for users (Michelle)
Collect more data for sensor calibration and strike location analysis (Kaitlynn)
Test sensors on final circuitry (Kaitlynn)
Complete v2 of Analog PCB and send for production, changes include a more continuous ground plane, low pass filters to eliminate high frequency noise, differential resistor network with gain value greater than unity to prevent oscillations and maintain stability (unity gain stable op-amps, but resistor tolerances can make for instabilities), grid like power network as per IPC-2221a, Figure 6 on page 38 (Chris)
Create breadboard version of circuit with 16 inputs and hand off to Kaitlynn for testing (Chris) (May try and get access to ARMOR lab's 32 input National Instrument's DAQ)
Finish combining all individual codes to create one code that can perform all functions start to finish (Chris)
Assemble v2 Analog PCB (Chris)
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Take a lot of photos throughout the design process to show progress. Dr. Loh will want all files on a google drive after the project. (5/13 via Zoom)
From Dr. Loh's meeting with TaylorMade: Try to move the electronics as far back from the club face as possible, not only for shock reasons, but also for mass distribution within the club head. It's not a big deal for the purposes of this project, but it's more impressive to get it as realistic as possible. (5/13 via Zoom)
Is the PCB company mounting all the components? We will have to solder some parts ourselves. (5/13 via Zoom)
Will send ARMOR Lab logo file to add to our CAD. (5/13 via Zoom)
Will work on scheduling a call with TaylorMade for us to present, possibly during Week 10, in case the final schedule doesn't work for them. (5/13 via Zoom)
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Check out Digi-Key for inexpensive 0.1% tolerance resistors. (5/11 via Zoom)
Try talking to Steve and/or Greg about Matlab reading the whole Arduino serial monitor as opposed to line by line. (5/11 via Zoom)
Approved purchase order for 3D printing material. What kind of lead time? 3-4 days standard, but we did priority shipping. (5/11 via Zoom)
Are we trying to replicate a golf club? We will have a complete mock up with the driver head, shaft, and handle. The head and handle will be 3D printed. We purchased a TaylorMade shaft. The driver face is flat, not representative of an actual driver face, but this helped us downsize the force for testing. (5/11 via Zoom)
Still working on a plan for final presentations. Currently considering breakout rooms with presentations happening in parallel and distributing judges. We would be able to tell TaylorMade which room and time our presentation is. The Dean is looking into it, and we will be updated when a decision is made. (5/11 via Zoom)
Steve and Tom expressed concerns about the electronics not working after repeated impact inside the driver head. They suggest we try to test everything separately before putting the electronics under that much stress. If it works, we can put it in the head and encase with epoxy for the final product. We expedited the PCB shipping to be able to test it in multiple scenarios before potting. (5/11 via Zoom)
Comments from Other Students in the Class (indicate date of comments and if via email or in person)
N/A
Risks and Areas of Concern
Method for determining strike location
Collecting data for all 16 sensors at once
v2 of Analog PCB will not correct problems in v1 PCB
Resources or Information Required but not Available
N/A
Schedule
3D print all remaining components
Assemble final product
Finish testing and data analysis
Budget (list amount spent and amount remaining)
Amount Spent: $2,380.81
Amount Remaining: $519.19
Progress on Report and Webpage
Second draft of report and webpage due midnight Friday
Send to sponsor for review