After our characterization, design, construction, and programming we came to the ME552 design expo with a function haptic feedback device. You can see our final device in the following video and pictures.
Some of the important aspects of our device that may go unnoticed are the important applications. According to the percussionist in our group this device is really exciting because it can help "teach beginners and experts the feeling of how to roll and flam faster." Just by holding the stick at a specific position you can get a continuous feedback bounce from the pad. Although this is not desired because it is not what happens in a conventional drum it is an artifact of the device that can be used as a teaching advantage. Holding a drum stick at the correct position to allow balanced bounces is one important skills a drummer needs to learn. By having a device that only allows the user to obtain this continuous bouncing through correct handling is a way to teach this important skill. This device also has the capability of being switched over to another drumhead or component to allow for different haptic feedback. Although this was not implemented in this device the possibility is there as well as for the creation of other virtual drums (which would be more realistic to simulate a smaller transportable drumset).
During the expo we encountered another problem. The hall effect magnet was initially placed between a crevasse to eliminate damage. However, midway through the expo it crept its way out and was eventually hit so much one of the sensors leads broke. A quick substitution allowed us to continue our display. However, for a while there the device was acting finicky which was unfortunate. Overall we were pleased to provide a wireless drumstick that implemented haptic feedback based on initial characterization of a conventional snare drum.
Some of the important aspects of our device that may go unnoticed are the important applications. According to the percussionist in our group this device is really exciting because it can help "teach beginners and experts the feeling of how to roll and flam faster." Just by holding the stick at a specific position you can get a continuous feedback bounce from the pad. Although this is not desired because it is not what happens in a conventional drum it is an artifact of the device that can be used as a teaching advantage. Holding a drum stick at the correct position to allow balanced bounces is one important skills a drummer needs to learn. By having a device that only allows the user to obtain this continuous bouncing through correct handling is a way to teach this important skill. This device also has the capability of being switched over to another drumhead or component to allow for different haptic feedback. Although this was not implemented in this device the possibility is there as well as for the creation of other virtual drums (which would be more realistic to simulate a smaller transportable drumset).
During the expo we encountered another problem. The hall effect magnet was initially placed between a crevasse to eliminate damage. However, midway through the expo it crept its way out and was eventually hit so much one of the sensors leads broke. A quick substitution allowed us to continue our display. However, for a while there the device was acting finicky which was unfortunate. Overall we were pleased to provide a wireless drumstick that implemented haptic feedback based on initial characterization of a conventional snare drum.
I enjoyed all the pictures associated with the design, construction, and final product. It provided for an excellent understanding of the final product and the issues you guys dealt with in order to make it that far. Great work!
ReplyDeleteI like how you cover all aspects of the design including backround, experimentation, design, protoyping, and results. The transfer function generated in MatLab looks good as the simulated inpulse response fits the experimental data well. Great job overall!
ReplyDeleteGreat job. Did you guys worry about the response rate of the physical system at all? A drum stick moves pretty quickly over a short distance. Did you take that into account when choosing how to actuate the drum head?
ReplyDelete--Colin
I liked how this device can teach a person who never played drums before how to do a drum roll. The haptic feedback allowed me to feel what an actual drum roll should feel like. It was also looked nice.
ReplyDeleteWe are amazed by the meticulous effort put by the team on the CAD design, the overall experimental setup and the aesthetic look of the same. It was nice to notice the use of LAB 6 skills in the project.
ReplyDeleteHey Team,
ReplyDeleteA very well documented project. Seems a lot of hard work went into the physical construction of the drum. I don't think that many of us actually paid this much attention to CAD modelling and all.
I liked the response of your instrument to the strike of the drum stick, the motion was intuitive and the feedback control system worked awesome. I really appreciate the idea of it being used for teaching purposes.
--Amit Ranjan