18. Project Development

Product Description

BOOM CHIX is a set of drum sticks to be used with either a drum kit or drum pad to practice stick control and rudimentary drum exercises at the beginner and intermediate levels. BOOM CHIX will consist of a pair of wooden drum sticks made of oak, hickory, or maple that are equipped with a standard metronome module as well as a device to offer haptic feedback or vibration at the same rate as a metronome. Standard equipment during practice sessions consists of drumsticks, ear plugs, headphones, metronome, sheet music, etc. Most drummers and their instructors are concerned with protecting their hearing as long term exposure to the noise created in a musical performance setting can result in hearing loss in the long term. As result, drummers are encouraged to wear both ear plugs and headphones which makes the metronome difficult to hear. Current metronomes usually exist as a wholly separate device so this product will allow for the elimination of an extra piece of equipment while helping to protect the drummers ears. Furthermore, the haptic feedback module, will allow the drummer to feel a vibration in the hand for each BPM rather than have them listen for a click of the metronome. By combining the metronome feature and haptic feedback features the drummer will no longer have to carry a separate metronome and doesn't have to worry about hearing the metronome as they benefit from tactile training instead. They can then spend more time listening to the music and instrumentation while making the practice of the music tempo a tactile experience. With BOOM CHIX drummers won't just hear the music...they'll feel it too!

Solution to a Pesky Problem

It is quite common for beginner drummers to use removable silicon handles to have a better grip and to avoid dropping their sticks. I believe this can be used as a template for a 3D printed handle which can be made out of hard plastic and potentially house the electronics for the vibrating metronome to be built inside. I believe a larger version of this silicon handle can be created once we do the module on molds and casting to fit over the 3D printed handles.Digikey also has a very large inventory of multivibrators which is something I am currently researching in order to find the smallest version possible so that it can fit inside the housing of the drum stick handles. The metronome type electronics kit seem to be way too large for this project unless the machinery is housed a separate unit and wired to the sticks externally which was my initial idea. After some thought I believe it would be much more effective to have everything housed internally.

picture of ear plugs for drummers picture of headphones

Current Offerings for Metronomes

The current market offerings when it come to metronomes seem to fall into three categories: watches, in ear pieces, and classic block models. The classic block models are probably most used but also mean an additional piece of equipment to carry and cannot be heard well when a drummer is protecting their ears. The in-ear models are most problematic as they give you no way to protect your ears while practicing. Placing protective headsets on the head would be very uncomfortable if placed over an in-ear piece. The watch model is probably the closest to what I am trying to create however the vibration is at the wrist and I believe the vibration in the hand with haptic feedback will build on muscle memory in the hand.

picture of watch picture of classic metronome picture of in ear set

Sources Referenced


Parts to Be Made & Processes to be Used

Cover for ERM Motor - Designed on Fusion 360 and 3D Printed (additive manufacturing) using Prusa MK4

Controller Packaging - Designed on Fusion 360, Adobe Illustrator, and 3D Printed (additive manufacturing) using Prusa MK4

Development Board - Electronics designed using KiCad, Adobe Illustrator, MODS Project, and milled on Roland Desktop Mill; Xiao RP2040 Embedded

Programming - Written with Arduino IDE Development Environment

Soldering Connections - Soldering Iron and Hot Air nozzle for connecting cables and components to the product unit and development board

Drum Stick Hollowing -Using a digital caliper for measuring, drilling done with oscillating multitool for hollowing (subtractive manufacturing)


Questions to Be Answered

How long will set of Boom Chix last?

Will the sticks wear out first or will the sticks last through a lithium battery change?

Can the interface be used on other types of drum sticks (brushes, mallets, dowels)?


Evaluation

I believe the best method for evaluating the prototype will be to crowdsource feedback. That is the case for many type of innovation after version 1 of the prototype is completed. By gathering information from users and observing their interaction with the prototype lots of useful information can be collected and used in the next prototyping iteration that creates v.2 and so on. In my case the best place to crowdsource feedback will be at my local music school where there are several drummers, like myself, at the beginner and intermediate levels. A secondary segment to interview and observe would be drum instructors at that very same location.


Weekly Skills Incorporated

stylus tablet photo

Week 2: Computer-Aided Design

picture of wokwi

Week 4: Embedded Programming

picture of finger drum

Week 5: 3D Scanning & Printing

picture of pcb drawing

Week 6: Electronics Design

picture of milled board

Week 8: Electronics Production

picture board and sensor

Week 9: Input Devices

picture of mini vibrating motor

Week 10: Output Devices

picture of box project

Week 12: Mechanical Design

Final Materials List


Qty Description Link Price
1 7 Pairs Maple Sticks Promark Maple Drum Sticks Size 5A $16.95
1 Drumstick Grip Tape 6pk Drum Stick Grip Tape $13.48
1 17 pk Miniature Button Motor 17 pk Vibrating Mini Motor 3V $6.99
1 Expandable Wire Sleeving Wire Sleeving Blue and Black $8.99
1 Ada Fruit 4 Digit Display w/ Backpack Adafruit 4 Digit Blue LED display $11.95