• Create the mobile companion app
• Establish communication with the device via Bluetooth
• Send frequency information from the device to the app & viseversa
• Allow for customization of tuning configuration(?)
• Build a prototype
• Have the device recording frequencies
• Work in progress: recordings not as accurate as desired
• Have the device spin the motor bidirectionally
• Still need to fine-tune the logic necessary to have the motor spin based on the frequency
• Update the prototype
• Allow for desired changes not addressed in the initial prototype
• Contain the hardware in one consistent unit
• Create a tuning knob-piece to attach to the motor
• Begin testing with a guitar

DEVELOPER'S LOG:

Fall 2018:

• Created the initial design of the device's functionality:
  
  
  
• Created the initial design of the device itself:
  
• Prototyping begins!
• Things accomplished
• Established communication with the Bluetooth controller + mobile app
• Able to detect different frequencies using the microphone
• Able to adjust the logic in order to turn the motor in specific directions


• Created initial mobile companion interface

23 January 2019:

• The official Guitar Auto Tuner website is born!
• Hosted on the CSE domain of UNR.
• Created different pages for the information neccessary
• Will be using placeholders for future additions (i.e. project video)

29 January 2019:

• Second demo occured with Devrin at 10AM in the MIKC, some of the things mentioned are:
• Need to meet more frequently, keep working on progress
• May need to upgrade the embedded system from an Arduino Uno to an Arduino Duo/Raspberry Pi
• May need to consider upgrading the torque of the motor when turning the actual peg
• Still need to clean up the accuracy of the frequency readings to match the frequencies being projected
• Need to clean up the mobile app, create a more robust user interface
• Need to create a single unit, hide the cabling
• May need to create a request on Innovations Day for a quieter space (VR Area?), maybe include sound compression padding

8 February 2019:

• Identified potential risks...
• Design Risks:
• Microphone interruption [HIGH]
• Lack of processing cores on Arduino Uno [MED-HIGH]
• Microphone location [MED]
• Containing parts in a single unit [MED-LOW]
• Adequeate motor torque [LOW]
• Bluetooth compatibility [LOW]
• Time Risks:
• Finishing main interface prior to next meeting [LOW]
• Budget Risks:
• Possible hardware swap of either embedded system OR microphone [MED-HIGH]

22 February 2019:

• Reiterated on resources used, use cases, and functional/nonfunctional requirements

8 March 2019:

• Changed Technology used for mobile application
• Xamarin-->Android Studio
• Lack of support for working with Bluetooth, one of our primary technologies
• User interface much more polished compared to previous iteration:

• Identified User Stories & Acceptance Criteria
• Mobile Application
• User Story 1: Easy app navigation
• Show necessary information in a concise format
• Minimize amount of menus for user to navigate through
• User Story 2: Reliable Connectivity Between Device & Smartphone
• Have smartphone automatically connect once a connection has been established
• Ensure stable connection throughout tuning process
• Guitar Auto Tuner Device
• User Story 1: Easy Attachment
• Ensure motor fits snug to tuning peg
• Minimize/eliminate any unneccesary exposed wires in the final product
• User Story 2: Damage Reduction
• Ensure proper motor torque, but not fast enough to break a string/damage the tuning knob
• Implement a safety system that detects that the string is getting too tight based on a high frequency for the string being tuned
• Identified Happy & Unhappy Path Workflow
• Happy Path
• Proper use & tuning
• Changing desired tuning
• User feedback
• Unhappy Path
• Incorrect frequency readings
• Prevent string damage
• Unable to establish collection with smartphone

13 March 2019:

• Presented our progress to Devrin Lee & Connor Scully-Allison
• Updated them on technology update
• Demonstrated latest iteration of the mobile app
• Demonstrated ability to send necessary information over Bluetooth from the phone to the device
• Demonstrated that the motor's torque was sufficient enough to turn the tuning knob

4 April 2019:

• Presented our project to the rest of the class
• Showed off general functionality of the project itself
• Showed off the hardware and technologies that we're using
• Demonstrated connectivity from the device to the smartphone

19 April 2019:

• Changed general design of the device, decided to use the smartphone's microphone over the extra microphone we were originally using
• The frequency readings were inaccurate prior to this change. This was due to the microphone being used being of low quality.
• We found the frequency readings from the microphone were much more precise compared to before.
• Currently finishing up fine-tuning the logic necessary to turn the tuning peg before Innovations Day
• Not as automatic as we'd like it to be, as it still requires much more user input than necessary.
• But the project is in a much better state than it was prior to presentation.
• Of course, this leaves us plenty of room for future development in delivering a more polished final product.

22 April 2019:

• After finishing up with the main functionality of the device itself, we decided not to solder the components together
• This was after assessing the amount of risk with our lack of soldering experience and the remaining time left before Innovations Day.
• Didn't want to risk destroying our breadboard and wait for another shipment before Innovations Day.
• Began filming the video that will be displayed on our website.
• We plan on going over the device's functionality, how it works with the mobile app, and a demonstration with narration throughout of how it's supposed to work.

30 April 2019:

• Demonstrated our project to Devrin Lee & Connor Scully-Allison
• Discussed our change in design, updates to user interface & design on the mobile app, and received feedback about our project
• UI and design Updates were well received, didn't really have to worry about anything else prior to Innovations Day

3 May 2019:

• Innovations Day has come...
• We plan on all being there throughout the time allotted to demonstrate our project.
• Needless to say, we demonstrated the general functionality of the device itself with passerbys
• It was very well-received, the smaller room helped with noise enough to tune treble strings but not as reliably as desired for bass strings
• Some visitors mentioned that the project was very cool and unique, and others pointed out some counterarguments for why they would want to use our device, their arguments were:
• Tuning by ear is something developed over time and some users may end up relying on the device
• The device is still not as fast as tuning by hand
• All-in-all though, the project was a success!
• Now we're just finalizing everything and uploading everything necessary for submission