# Title Team Members TA Documents Sponsor
65 Electric Paintbrush Cleaner
John Kriston
Luis Bibian
Yael Legaria
Madison Hedlund design_document3.pdf
Group Members :[Luis Bibian], [Yael Legaria]
Net IDs: [bibian2], [legaria2]

Problem: When painting, most people like to keep a cup/bucket of water around to clean their brushes in but, this can get very messy especially when you're cleaning the brushes with your fingers. Eventually, the water gets dirty, you get all wet, your paintbrushes aren't clean, and your masterpiece gets ruined. Now, what was supposed to be a relaxing hobby has become a stressful situation.

Solution Overview : An electric paintbrush cleaner that perfectly cleans your paintbrush every time. All you have to do is insert your brush. Think of it as an electric pencil sharpener but, instead of sharpening pencils that are inserted, it cleans paintbrushes.

Solution Components:

-Power System

Ideally we want to be able to plug the device into a wall so we will need to use an AC-DC converter with several available output voltages to power the system.

-A clean water tank with a small water pump to send water to the cleaning mechanism.

-A sensory system that senses when a paintbrush is inserted which tells the machine to start/stop operation.

In order to sense the motion of the paintbrush being inserted to begin the cleaning process, we can use a PIR sensor that will be placed inside of the device that will sense when the paintbrush is inserted. This signal would be processed by a microcontroller, and in order to avoid the PIR sensor continually triggering once the paintbrush has been inserted due to any additional movements, we can set a cleaning cycle duration where the PIR sensor data will be ignored until the cleaning cycle has officially ended.

-A cleaning mechanism such as spinning cleaning brushes that will work with the water to clean the brush.

The spinning brushes used to clean the paintbrush can be driven by a DC gear motor. The brush cleaners will need to spin parallel to the direction of the bristles in order to avoid damaging the paintbrush. In order to not interfere with the water coming from the clean water reservoir, we can have the motorized brush cleaning mechanism initially positioned further back within the device housing so that the paintbrush can first be rinsed by the water coming from the water pump. The brush cleaning mechanism can then move forward to position the cleaning brushes above the paintbrush, and for this we would have to build a belt drive system to move the cleaning mechanism back and forth.

-A drain and disposable tank to collect the dirty water used during the cleaning operation.

Criterion for Success: The main goal of this project will be to create an machine which is capable of sufficiently cleaning a paintbrush which has recently been used. This means that if you were to touch the brush to paper after the cleaning operation, you should see no color. This should all be done without harming the paintbrush, at least no differently then you would when cleaning it with your fingers. This should all be done automatically with the person only having to insert and hold his/her paintbrush.

Overall, the group will need to design an appropriate power distribution layout for the machine, create a working sensory system, waterproof the circuitry, design a harmless cleaning mechanism, properly set up a start/stop water pump system, and design the structure where all the components will be placed to be efficient and visually appealing for the user.

Drum Tutor Lite

Zhen Qin, Yuanheng Yan, Xun Yu

Drum Tutor Lite

Featured Project

Team: Yuanheng Yan, Zhen Qin, Xun Yu

Vision: Rhythm games such as guitar hero are much easier than playing the actual drums. We want to make a drum tutor that makes playing drums as easy as guitar hero. The player is not required to read a sheet music.

Description: We will build a drum add-on that will tutor people how to play the drums. We will make a panel for visual queue of the drum and beats in a form similar to guitar hero game. The panel can be a N*10 (N varying with the drum kit) led bar array. Each horizontal bar will be a beat and each horizontal line above the bottom line will represent the upcoming beats.

There will be sensors on each drum that will fire when the drum heads is hit. The drums will be affixed with ring of light that provides the timing and accuracy of the player according to the sensors.

Of course with a flip of a switch, the drum could be a simple light up drum: when the player hits the drum, that particular drum will light up giving cool effects.

The system will be on a microprocessor. Or for more versatile uses, it could be connected to the computer. And a app will be written for the tutor.

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