Overview of Status of Analysis, Design, Fabrication, Tests, etc.
All components of the device are assembled.
Glass was picked up today and testing is going to occur tomorrow
Chemically strengthened glass
Explosive film
Glass was sealed today to one of the housing and is curing for 24 hours prior to IP 67 testing tomorrow.
Need to fix the problem with PCB.
Accomplishments from Previous Week
Finished machining 2 complete housings of the device (plastic and aluminum shell).
Created all 3D printed pieces needed for the inlay.
Finished the soldering of electronics on PCB.
Fixed the coil array, assembled all components and put together the entire device.
Finished the final report.
Goals for Next Week (list names after each item). Use specific and measurable objectives.
Test the strength of glass on Tuesday (ME - Anna & Seth)
Seal the glass to the device and conduct the IP 67 waterproof testing on Tuesday (ME - Anna & Seth)
Add the test results to final report on Tuesday (ME - Anna & Seth)
Finalize the poster and web page on Tuesday (ME - Anna & Seth)
Order new electronic components for the device, did that yesterday(EE - Joshua)
Fix the problems with PCB (EE - Rendale & Joshua)
Sponsor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
Suggest to work with electronic experts in IKA and fix the problems of PCB. (Mar 19 in person)
Instructor Comments from Last Meeting and Actions Taken to Address these Comments (indicate date of comments and if via email or in person)
We discussed the concern of soldering all of the electrical components and the likelihood of something going wrong (Mar 13 in person).
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
Problem with PCB not fixed by poster session
The electrical engineers have encountered a problem with the PCB as all the components are soldered, yet the coils are not powering on. All of the I/O components work, the microcontroller, led, etc, but the H-bridges and coil array do no work.
Extensive testing has been done on Friday and Saturday from the electrical side of things but they were still unsure where the problem is arising. It could be the soldered joints, it also could be from the PCB layout. They are supplying a 3Amp power supply to the layout, but for some reason the output reading is approximately 1.1V. The reasons are unknown why this is happening as they should be getting a much higher voltage reading.
We met with the sponsor today and he got our electrical team in contact with IKA's electrical engineers who troubleshoot PCBs often and the engineers gave Joshua and Rendale some next steps on troubleshooting the PCB.
The only issue for them is a lack of time they have available for the project. They have finals and they are not willing to sacrifice more time on the project until their finals are over.
It looks like the device is not going to be functioning in time for poster session.
However, the sponsor did not seem totally unpleased with this news. He mentioned how regular it is that PCB's don't work the first time. He also likes the mechanical side of things.
The electrical guys did order an additional set of all the electrical components and they have another PCB that has not been touched.
Resources or Information Required but not Available
N/A
Schedule
Pass IP 67 testing
Glass was picked up today/
Get the device to work maybe by the end of the quarter?
The electrical team may be spending another quarter as technical elective credit to fix this issue.
Budget (list amount spent and amount remaining)
Amount Spent: $1592.16 (more funds have and will be spent before the end of the quarer).
Amount Available: $2207.84
Progress on Report and Webpage
Final report finished and uploaded.
Will add testing results to the report and web page before Wednesday.